Status of the NICA project at JINR

Directory of Open Access Journals (Sweden)

Kekelidze Vladimir

2017-01-01

Full Text Available The NICA (Nuclotron-based Ion Collider fAcility project is now under active realization at the Joint Institute for Nuclear Research (JINR, Dubna. The main goal of the project is a study of hot and dense strongly interacting matter in heavy-ion (up to Au collisions at the center-of-mass energies up to 11 GeV per nucleon. Two modes of operation are foreseen, collider mode and extracted beams, with two detectors: MPD and BM@N. The both experiments are in preparation stage. An average luminosity in the collider mode is expected to be 1027 cm−2 s−1 for Au (79+. Extracted beams of various nuclei with maximum momenta of 13 GeV/c (for protons will be available. A study of spin physics with extracted and colliding beams of polarized deuterons and protons at energies up to 27 GeV (for protons is foreseen with the NICA facility. The proposed program allows one to search for possible signs of phase transitions and critical phenomena as well as to shed light on the problem of the nucleon spin structure.

Investigation of Neutron Spectra and Transmutation of ^{129}I, ^{237}Np and Other Nuclides with 1.5 GeV Protons from the Dubna Nuclotron Using the Electronuclear Setup "Energy plus Transmutation"

CERN Document Server

Krivopustov, M I; Balabekyan, A R; Batusov, Yu A; Bielewicz, M; Brandt, R; Chaloun, P; Chultem, D; Dwivedi, K K; Elishev, A F; Fragopoulou, M; Henzl, V; Henzlová, D; Kalinnikov, V G; Kievets, M K; Krása, A; Krizek, F; Kugler, A; Manolopoulou, Metaxia; Mariin, I I; Nourreddine, A; Odoj, R; Pavliouk, A V; Pronskikh, V S; Robotham, H; Siemon, K; Szuta, M; Stegailov, V I; Solnyshkin, A A; Sosnin, A N; Stoulos, S; Tsoupko-Sitnikov, V M; Tumendelger, T; Wojecehowski, A; Wagner, V; Wan, J S; Westmeier, W; Zamani-Valasiadou, M; Kumawat, H; Kumar, V; Zaverioukha, O S; Zhuk, I V

2004-01-01

Experiments which are part of the scientific program "Investigations of physical aspects of electronuclear method of energy production and transmutation for radioactive waste of atomic energetics using relativistic beams from the JINR Synchrophasotron/Nuclotron" (project "Energy plus Transmutation") are described. A large lead target surrounded by a four-section uranium blanket with total weight of 206.4 kg natural uranium was irradiated with 1.5 GeV protons from the new cryogenic accelerator Nuclotron. Radiochemical sensors were exposed to the secondary particle fluences inside and on top of the target assembly. Two long-lived radioactive waste of atomic energetics sensors ^{129}I and ^{237}Np (approximately 1 g weight each) and stable nuclides ^{27}Al, ^{59}Co, ^{127}I, ^{139}La, ^{197}Au and ^{209}Bi as well as natural and enriched uranium were used. In addition, various solid state nuclear track detectors and nuclear emulsions were exposed simultaneously. The experimental results confirm the theoretical e...

CMS computing support at JINR

International Nuclear Information System (INIS)

Golutvin, I.; Koren'kov, V.; Lavrent'ev, A.; Pose, R.; Tikhonenko, E.

1998-01-01

Participation of JINR specialists in the CMS experiment at LHC requires a wide use of computer resources. In the context of JINR activities in the CMS Project hardware and software resources have been provided for full participation of JINR specialists in the CMS experiment; the JINR computer infrastructure was made closer to the CERN one. JINR also provides the informational support for the CMS experiment (web-server http://sunct2.jinr.dubna.su). Plans for further CMS computing support at JINR are stated

NICA project at JINR: status and prospects

International Nuclear Information System (INIS)

Kekelidze, V.D.

2017-01-01

The project NICA (Nuclotron-based Ion Collider fAcility) is aimed to study hot and dense baryonic matter in heavy-ion collisions in the energy range up to 11.0 AGeV . The plan of NICA accelerator block development includes an upgrade of the existing superconducting (SC) synchrotron Nuclotron and construction of the new injection complex, SC Booster, and SC Collider with two interaction points (IP). The heavy-ion collision program will be performed with the fixed target experiment Baryonic Matter at Nuclotron (BM@N) at the beam extracted from the Nuclotron, and with Multi-Purpose Detector (MPD) at the first IP of NICA Collider. Investigation of nucleon spin structure and polarization phenomena is foreseen with the Spin Physics Detector (SPC) at the second IP of the Collider.

Status of the NICA project at JINR

Directory of Open Access Journals (Sweden)

Kekelidze V.

2016-01-01

Full Text Available The project NICA (Nuclotron-based Ion Collider fAcility is aimed to study hot and dense baryonic matter in heavy ion collisions in the energy range up to √sNN = 11 GeV, and to study nucleon spin structure in polarized proton and deuteron collisions in the energy range up to √s = 27 GeV. The heavy ion program will be performed at the Nuclotron extracted beams with the BM@N (Baryonic Matter at Nuclotron set-up and with the MPD (MultiPurpose Detector at the NICA collider with the average luminosity of L = 1027 cm−2s−1 (for 197Au79+. The spin physics will be studied with the SPD (Spin Physics Detector at the NICA collider.

Invenio @ JINR

CERN Multimedia

CERN. Geneva

2017-01-01

JDS collections include published articles, books, theses, conference proceedings, audio, video materials, etc. Various methods of ingesting of documents into JDS and updating its content are applied: submission by authors, harvesting, (automatic) uploading. Further development of JDS is connected with the project “JINR corporate information system” aimed as information support of scientific researches performed at JINR. Within the project we are creating a collection “Authority” which is intended to be a core of this system.

Nonlinear dynamics in Nuclotron

International Nuclear Information System (INIS)

Dinev, D.

1997-01-01

The paper represents an extensive study of the nonlinear beam dynamics in the Nuclotron. Chromatic effects, including the dependence of the betatron tunes on the amplitude, and chromatic perturbations have been investigated taking into account the measured field imperfections. Beam distortion, smear, dynamic aperture and nonlinear acceptance have been calculated for different particle energies and betatron tunes

Betatron tune correction schemes in nuclotron

International Nuclear Information System (INIS)

Shchepunov, V.A.

1992-01-01

Algorithms of the betatron tune corrections in Nuclotron with sextupolar and octupolar magnets are considered. Second order effects caused by chromaticity correctors are taken into account and sextupolar compensation schemes are proposed to suppress them. 6 refs.; 1 tab

A system for beams transport from synchrophasotron and nuclotron to experimental set-ups No. 205

International Nuclear Information System (INIS)

Barteneva, N.A.; Volobueva, T.I.; Kirillov, A.D.

1990-01-01

A scheme for accelerated particle beam trasnport from the MV-1 synchrophasotron and Nuclotron is presented. The positioning of the Nuclotron ring at 3.9 m level relatively to the lines of existing channels conditioned the development of beam vertical extraction system. Beam transport from the Nuclotron or the synchrophasotron to building 205 is ensured through a moving doublet of quadrupoles and magnet mounted on a rotating platform. 1 ref

JINR studies for a Tau-Charm Factory

International Nuclear Information System (INIS)

Chelkov, G.

1994-01-01

This paper touches on work being done a JINR relevant to a proposal for construction of a tau charm factory, and its attendant detector system. A workshop on such a device was held at JINR in 1992, and here the author touches on questions of what one wants to learn about tau particles from such a machine, the charge to the group looking at a detector design for such a facility, the general conclusions of the JINR study, and a status report of work on the JINR Tau Charm Factory project

JINR and Russia Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

The collaboration of JINR scientists and specialists with Russian colleagues, large institutes and industrial enterprises of the JINR host countries dates back its founding. These fruitful contacts cover virtually all research areas of JINR and largely determine new trends in scientific research. Geographically, JINR co-operation with scientific and educational centres and industry in Russia embraces over 150 organisations and over 40 Russian towns.

JINR rapid communications

International Nuclear Information System (INIS)

1999-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate records on additional conditions on eigenvectors in solving inverse problem for two-dimensional Schroedinger equation, on an absolute calibration of deuteron beam polarization at LHE, determination of the vector component of the polarization of the JINR synchrophasotron deuteron beam, wavelet-analysis: criterion of reliable signal selection, on asymptotics in inclusive production of antinuclei and nuclear fragments, use of neutron activation analysis at the IBR-2 reactor for atmospheric monitoring and impulse method for temperature measurement of silicon detectors

New co-operation agreement between CERN and JINR

CERN Multimedia

CERN Bulletin

2010-01-01

CERN Director-General Rolf Heuer (left) and JINR Director Alexei Sissakian (right). On Thursday 28 January, CERN Director-General Rolf Heuer and JINR Director Alexei Sissakian signed a new enlarged co-operation agreement to continue and enhance the scientific and technical co-operation of the two institutes in the field of high-energy physics. CERN and JINR have a long and successful history of collaboration extending back to the earliest days of their existence. The first informal meeting on international co-operation in the field of high-energy accelerators took place at CERN in 1959. It was attended by senior scientists from the United States, the USSR (including JINR) and CERN. Both JINR and CERN have played the role of a bridge between East and West for decades, contributing to the development of international scientific co-operation. In 1992 JINR signed a co-operation agreement with CERN that included an important number of protocols covering JINR’s participation in the construction of th...

MEXnICA, Mexican group in the MPD-NICA experiment at JINR

Science.gov (United States)

Rodríguez Cahuantzi, M.; MEXnICA Group

2017-10-01

The Nuclotron Ion Collider fAcility (NICA) accelerator complex is currently under construction at the Joint Institute for Nuclear Research (JINR) laboratory located in the city of Dubna in the Russian Federation. The main goal of NICA is to collide heavy ion nuclei to study the properties of the phase diagram of strongly interacting matter at high baryon density. In this accelerator complex, two big particle detectors are planned to be installed: Spin Physics Detector (SPD) and Multi-Purpose Detector (MPD). At the design luminosity, the event rate in the MPD interaction region is about 6 kHz; the total charged particle multiplicity would exceeds 1000 in the most central Au+Au collisions at \\sqrt{{sNN}} = 11 {{GeV}}. Since the middle of 2016 a group of researchers and students from Mexican institutions was formed (MEXnICA). The main goal of the MEXnICA group is to collaborate in the experimental efforts of MPD-NICA proposing a BEam-BEam counter detector which we called BEBE. In this written general aspects of MPD-NICA detector and BEBE are discussed. This material was shown in a contributed talk given at the XXXI Annual Meeting of the Mexican Division of Particles and Fields held in the Physics Department of CINVESTAV located in Mexico City during the last week of May 2017.

Statistical mechanics in JINR

International Nuclear Information System (INIS)

Tonchev, N.; Shumovskij, A.S.

1986-01-01

The history of investigations, conducted at the JINR in the field of statistical mechanics, beginning with the fundamental works by Bogolyubov N.N. on superconductivity microscopic theory is presented. Ideas, introduced in these works and methods developed in them, have largely determined the ways for developing statistical mechanics in the JINR and Hartree-Fock-Bogolyubov variational principle has become an important method of the modern nucleus theory. A brief review of the main achievements, connected with the development of statistical mechanics methods and their application in different fields of physical science is given

JINR: the initiator of future discoveries

Science.gov (United States)

Matveev, V. A.

2016-03-01

On 26 March 2016, the Joint Institute for Nuclear Research (JINR) will mark its 60th anniversary as an internationally known research center that is a unique example of how fundamental theoretical and experimental studies can be integrated with the development and application of cutting-edge technologies and with university education. JINR member states number 18, of which Hungary, Germany, Egypt, Italy, Serbia, and the Republic of South Africa are each under a government-level cooperation agreement with the institute. Three factors combine to form a solid foundation on which JINR bases its work: commitment to traditions of internationally renowned research schools; unique performance hardware capable of solving problems of current interest in various fields of modern physics; and status as a UN intergovernmental body. Ranked high within the world's scientific community, the institute has conducted a wide range of research and trained high quality research personnel for its member states over the 60-years period since its foundation. In accordance with its Charter, JINR is open to participation by all interested states and ensures equal and mutually beneficial cooperation among them.

User guide to JINR server of scientific publications JDS

International Nuclear Information System (INIS)

Filozova, I.A.; Zaikina, T.N.; Musul'manbekov, Zh.Zh.; Semenov, R.N.; Shestakova, G.V.

2011-01-01

In the framework of the international program OAI (Open Access Initiative) the digital open access archive-repository JINR Document Server (JDS) is built up. The main goal of the JDS is to collect at the JINR site all the publications of JINR researchers. The documents deposited in the repository are preprints, journal articles, books, conference papers, conference announcements, theses, annual reports, etc. Currently, the retrospective publications of JINR authors up to 1956 are deposited. The JDS, being an integrated digital library system, gives users an opportunity to deposit manuscripts in self-archiving mode, create personal catalogs, subscribe to alerts and RSS, send comments and arrange discussions on submitted papers

The fixed target experiment for studies of baryonic matter at the Nuclotron (BM rate at N)

Energy Technology Data Exchange (ETDEWEB)

Kapishin, Mikhail [Joint Institute for Nuclear Research, Dubna, Moscow region (Russian Federation)

2016-08-15

BM rate at N (Baryonic Matter at Nuclotron) is the first experiment to be realized at the accelerator complex of NICA-Nuclotron. The aim of the BM rate at N experiment is to study interactions of relativistic heavy-ion beams with fixed targets. The BM rate at N setup, results of Monte Carlo simulations and the BM rate at N experimental program are presented. (orig.)

First Results from BM@N Technical Run with Deuteron Beam

Science.gov (United States)

Baranov, D.; Kapishin, M.; Kulish, E.; Maksymchuk, A.; Mamontova, T.; Pokatashkin, G.; Rufanov, I.; Vasendina, V.; Zinchenko, A.

2018-03-01

BM@N (Baryonic Matter at Nuclotron) is the first experiment to be realized at the accelerator complex of NICA-Nuclotron at JINR (Dubna). The aim of the experiment is to study interactions of relativistic heavy ion beams with a kinetic energy from 1 to 4.5 AGeV with fixed targets. The BM@N set-up at the starting phase of the experiment is introduced. First results of the analysis of minimum bias experimental data collected in the technical run in interactions of the deuteron beam of 4 AGeV with different targets are presented. The spacial, momentum and primary vertex resolution of the GEM tracker are studied. The signal of Lambda-hyperon is reconstructed in the proton-pion invariant mass spectrum. The data results are described by Monte Carlo simulations. The investigation has been performed at the Laboratory of High Energy Physics, JINR.

ATLAS barrel hadron calorimeter. JINR - group activity (July - September 1995)

International Nuclear Information System (INIS)

Budagov, Yu.; Lebedev, A.; Kul'chitskij, Yu.

1995-01-01

Here we present a short report on the main results of the preparatory work for 0-module, to be manufactured at JINR. The reported period covers July - September 1995 JINR-group activity and includes the main topics considered by TILE-CAL community at September 1995 meeting at CERN. Many of JINR developed propositions have been included in 0-module production final technology. 2 refs., 1 tab

Heavy Ion Injection Into Synchrotrons, Based On Electron String Ion Sources

CERN Document Server

Donets, E E; Syresin, E M

2004-01-01

A possibility of heavy ions injection into synchrotrons is discussed on the base of two novel ion sources, which are under development JINR during last decade: 1) the electron string ion source (ESIS), which is a modified version of a conventional electron beam ion source (EBIS), working in a reflex mode of operation, and 2) the tubular electron string ion source (TESIS). The Electron String Ion Source "Krion-2" (VBLHE, JINR, Dubna) with an applied confining magnetic field of 3 T was used for injection into the superconducting JINR synchrotron - Nuclotron and during this runs the source provided a high pulse intensity of the highly charged ion beams: Ar16+

JINR and Belgium Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

Collaboration of JINR with research centres and universities in Belgium embraces various aspects of nuclear, elementary particle and solid-state physics. Involved in the co-operation with JINR scientists are Belgian colleagues from UIA (Antwerp), ISIPC, ULB, VUB (Brussels), IRMM (Geel) RUG (Gent), KUL (Leuven) IBAA (Louvain-la-Neuve) and the University of Mons.

Radioactivity of the JINR site environment

International Nuclear Information System (INIS)

Alenitskaya, S.I.; Bamblevskij, V.P.; Kargin, A.N.; Komochkov, M.M.

1977-01-01

The results of the study of the existing levels of enviromental radioactivity in the JINR region for 1971-1975; content of radioactive products in the grass and surface soil layer, levels of the total alpha - and beta-radioactivity of water of open reservoirs as well as the background of the gamma-radiation and charged particles are presented. The study testifies, that the operation of the JINR nuclear-physical installations does not significantly affect the radioactivity of the environment which is mainly conditioned by the products of the natural origin and the global fallouts

Cross-section studies of relativistic deuteron reactions obtained by activation method

CERN Document Server

Wagner, V; Svoboda, O; Vrzalová, J; Majerle, M; Krása, A; Chudoba, P; Honusek, M; Kugler, A; Adam, J; Baldin, A; Furman, W; Kadykov, M; Khushvaktov, J; Sol-nyskhin, A; Tsoupko-Sitnikov, V; Závorka, L; Tyutyunnikov, S; Vladimirova, N

2014-01-01

The cross-sections of relativistic deuteron reactions on natural copper were studied in detail by means of activation method. The copper foils were irradiated during experiments with the big Quinta uranium target at Joint Institute for Nuclear Research (JINR) in Dubna, Russia. The deuteron beams with energies ranging from 1 GeV up to 8 GeV were produced by JINR Nuclotron. Residual nuclides were identified by the gamma spectrometry. Lack of such experimental cross-section values prevents the usage of copper foils from beam integral monitoring.

Investigation of spatial distribution of fission-rate of natural uranium nuclei in the blanket of electronuclear setup 'Energy plus Transmutation' at Dubna Nuclotron proton beam at energy 1.5 GeV

International Nuclear Information System (INIS)

Hashemi-Nezhad, S.R.; Zhuk, I.V.; Kievets, M.; Krivopustov, M.I.; Sosnin, A.N.; Westmeier, W.; Brandt, R.

2008-01-01

The 'Energy plus Transmutation' experimental setup of the Veksler and Baldin Laboratory of High Energy Physics within the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, is a lead target (with a diameter of 8.4 cm and length of 45.6 cm) surrounded by a uranium blanket (weight 206.4 kg of natural uranium). A polyethylene plus cadmium shield is placed around the target-blanket assembly to modify the spallation and fission neutron spectra in the system. The setup was irradiated by a proton beam of energy 1.5 GeV using the Nuclotron accelerator. The spatial distribution of natural uranium fission-rate in the assembly and fission-rate in the blanket was determined experimentally and compared with Monte Carlo predictions using the MCNPX 2.6C code. Besides neutron-induced fission the calculations include the Nat U(p,f), Nat U(π,f) as well as Nat U(γ,f) reactions. Good agreement between the experimental and calculation results was obtained. The possible sources of errors in the experiment and calculations are discussed in detail

Computer graphics at VAX JINR

International Nuclear Information System (INIS)

Balashov, V.K.

1991-01-01

The structure of the software for computer graphics at VAX JINR is described. It consists of graphical packages GKS, WAND and a set graphicals packages for High Energy Physics application designed at CERN. 17 refs.; 1 tab

PC-based control of the internal target station at the Nuclotron

Energy Technology Data Exchange (ETDEWEB)

Kilman, J [and others

1996-12-31

A PC-based control system of the internal target at the Nuclotron is described. The system is based on CAMAC-control of the step motor of the station and screen representation of information about needed beam parameters and space-time position of targets relative to a beam. 6 refs.; 4 figs.

JINR supercomputer of the module type for event parallel analysis

International Nuclear Information System (INIS)

Kolpakov, I.F.; Senner, A.E.; Smirnov, V.A.

1987-01-01

A model of a supercomputer with 50 million of operations per second is suggested. Its realization allows one to solve JINR data analysis problems for large spectrometers (in particular DELPHY collaboration). The suggested module supercomputer is based on 32-bit commercial available microprocessor with a processing rate of about 1 MFLOPS. The processors are combined by means of VME standard busbars. MicroVAX-11 is a host computer organizing the operation of the system. Data input and output is realized via microVAX-11 computer periphery. Users' software is based on the FORTRAN-77. The supercomputer is connected with a JINR net port and all JINR users get an access to the suggested system

Study of depolarization of deuteron and proton beams in the Nuclotron ring

CERN Document Server

Golubeva, N Y; Kondratenko, A M; Kondratenko, A M; Mikhajlov, V A; Strokovsky, E A

2002-01-01

The scheme for acceleration of polarized deuterons at the Nuclotron accelerator facility includes a cryogenic polarized deuteron source 'Polaris', a 5 MeV/nucl. linac, a superconducting heavy ion synchrotron of a 6 GeV/nucl. energy with 10 s spill slow extraction, thin internal targets and wide net of external beam lines. This scheme also allows one to generate high energy polarized proton and neutron beams with well determined characteristics. There are two principal problems of polarized particle acceleration: to keep spin orientation during beam acceleration and to produce the high ion intensity sufficient for data taking in physics experiments. The first problem is discussed in this paper. The reasons of depolarization effects in the mentioned parts of the Nuclotron have been analysed and four methods of the polarization conserving have been suggested. They are the spin resonance strength compensation increasing of the resonance strength, the betatron tune jump and the spin tune jump. Among their number, ...

Congratulations and scientific papers to the 40th anniversary of JINR

International Nuclear Information System (INIS)

Biryukov, V.A.; Kiseleva, T.B.; Starchenko, B.M.; Ustenko, L.P.

1996-01-01

Congratulations and scientific papers devoted to the JINR forty-year anniversary are presented. The wide spectrum of scientific research studies, conducted at the JINR: high energy physics, nuclear physics and condensed matter physics, is noted. The main attention is paid to nucleon structure, coherent processes in nuclei and crystals and also to the heavy and superheavy nuclei stability

Computing for ongoing experiments on high energy physics in LPP, JINR

International Nuclear Information System (INIS)

Belosludtsev, D.A.; Zhil'tsov, V.E.; Zinchenko, A.I.; Kekelidze, V.D.; Madigozhin, D.T.; Potrebenikov, Yu.K.; Khabarov, S.V.; Shkarovskij, S.N.; Shchinov, B.G.

2004-01-01

The computer infrastructure made at the Laboratory of Particle Physics, JINR, purposed for active participation of JINR experts in ongoing experiments on particle and nuclear physics is presented. The principles of design and construction of the personal computer farm have been given and the used computer and informational services for effective application of distributed computer resources have been described

JINR rapid communications

International Nuclear Information System (INIS)

1996-01-01

The present collection of rapid communications from JINR, Dubna, contains five separate reports on analytic QCD running coupling with finite IR behaviour and universal α bar s (0) value, quark condensate in the interacting pion- nucleon medium at finite temperature and baryon number density, γ-π 0 discrimination with a shower maximum detector using neural networks for the solenoidal tracker at RHIC, off-specular neutron reflection from magnetic media with nondiagonal reflectivity matrices and molecular cytogenetics of radiation-induced gene mutations in Drosophila melanogaster. 21 fig., 1 tab

JINR rapid communications

International Nuclear Information System (INIS)

1995-01-01

The present collection of rapid communications from JINR, Dubna, contains six separate reports on Monte Carlo simulation of silicon detectors for the ALICE experiment at LHC, a study of single tagged multihadronic γγ* events at an average Q 2 of 90 GeV 2 , epithermal neutron activation analysis of moss, lichen and pine needles in atmospheric deposition monitoring, the theory of neutrino oscillation, coupled quadrupole and monopole vibrations of large amplitude and test of the Ellis-Jaffe sum rule using parametrization of the measured lepton-proton asymmetry. 21 figs., 18 tabs

Potentialities of the internal target station at the Nuclotron

Energy Technology Data Exchange (ETDEWEB)

Malakhov, A.I.; Afanasiev, S.V.; Anisimov, Yu.S.; Artiomov, A.S.; Bazilev, S.N.; Khrenov, A.N.; Kliman, J.; Krasnov, V.A.; Matousek, V.; Morhac, M. E-mail: fyzimiro@savba.sk; Starikov, A.Yu.; Shabunov, A.V.; Slepnev, V.M.; Turzo, I

2000-02-01

The potentialities of the internal target station used in physics experiments at the Nuclotron, as well as its construction, hardware and software configurations are described. The remote control of the station is performed by means of a PC and is based on operative presentation of the magnetic field cycle, the beam parameters and the target position on screen. Consequently, the space-time trajectory of motion of a chosen target can be determined in an interactive way by an operator. During the accelerator operation the motion is carried out by means of a stepper motor.

The status of computing and means of local and external networking at JINR

Energy Technology Data Exchange (ETDEWEB)

Dorokhin, A T; Shirikov, V P

1996-12-31

The goal of this report is to represent a view of the current state of computer support at JINR different physical researches. JINR network and its applications are considered. Trends of local networks and the connectivity with global networks are discussed. 3 refs.

JINR information retrieval system

International Nuclear Information System (INIS)

Arnaudov, D.D.; Govorun, N.N.

1975-01-01

The organization of the main files of the JINR Information Retrieval System is described. There are four main files in the System. They are as follows: MD file that consists of abstracts of documents; OMPOD file where the index records of documents are gathered; MZD file that consists of list heads, and OMD file- the file of descriptors. The last three files are considered in some detail. The System is realized in the COBOL language on the CDC computer

JINR rapid communications

International Nuclear Information System (INIS)

1998-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate records on decays of excited strange mesons in the extended NJL model, production of heavy evaporation residues in the reactions induced by an extracted 48 Ca beam on a 208 Pb target, scaling behaviour of tensor analyzing power (A yy ) in the inelastic scattering or relativistic deuterons,two-photon collisions at very low Q 2 from LEP2: forthcoming results, high magnetic field uniformity superconducting magnet for a movable polarized target, multichannel time-to-digital converter for drift detector and wavelet-analysis: application to Gaussian signals

JINR rapid communications

International Nuclear Information System (INIS)

1998-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate records on relativistic multiparticle processes in the central rapidity region at asymptotically high energies, a new experimental study of charged K→3π decays, pre-Cherenkov radiation as a phenomenon of 'light barrier', stable S=-2 H dibaryon found in Dubna, calculation of Green functions and gluon top in some unambiguous gauges, a method of a fast selection of inelastic nucleus-nucleus collisions for the CMS experiment and the manifestation of jet quenching in differential distributions of the total transverse energy in nucleus-nucleus collisions

JINR rapid communications

International Nuclear Information System (INIS)

1998-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate records on invisible Z-boson width and restrictions on next-to-minimal supersymmetric standard model, cosmic test of honeycomb drift chambers, fission of 209 Bi, 232 Th, 235 U, 238 U and 237 Np in a spallation neutron field, rapid screening of spontaneous and radiation-induced structural changes at the vestigial gene of Drosophila melanogaster by polymerase chain reaction, gamma-ray multiplicities in sub-barrier fission of 226 Th and the decay constants of the scalar and pseudoscalar mesons in the quark models with quasilocal interaction

JINR rapid communications

International Nuclear Information System (INIS)

1995-01-01

The present collection of rapid communications from JINR, Dubna, contains eight separate reports on the measurement of charge radii for Ti nuclei, spectroscopy of 13 Be, concentrations of hadrons and quark-gluon plasma in mixed phase, experimental results on one-spin pion asymmetry in the d↑ + A → π±(90 0 ) + X process, new results on cumulative pion and proton production in p-D collisions, investigation of charge exchange reactions, the study of the tensor analyzing power in cumulative particle production on a deuteron beam and an evidence for the excited states of the S = -2 stable light dibaryon. 32 figs., 6 tabs

JINR rapid communications

International Nuclear Information System (INIS)

1999-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate records on measurements of the total cross section difference Δσ L (np) at 1.59, 1.79, and 2.20 GeV, to the estimation of angular distributions of double charged spectator fragments in nucleus-nucleus interactions at superhigh energies, simulation dE/dx analysis results for silicon inner tracking system of ALICE set-up at LHC accelerator, high-multiplicity processes, triggering of high-multiplicity events using calorimetry, ORBIT-3.0 - a computer code for simulation and correction of the closed orbit and first turn in synchrotrons and determination of memory performance

Mathematical model of the electronuclear set-up on the beam of the JINR synchrotron

International Nuclear Information System (INIS)

Barashenkov, V.S.; Kumawat, H.; Lobanova, V.A.; Kumar, V.

2003-01-01

On the base of the Monte Carlo code CASCADE, developed at JINR, a mathematical model of the deep-subcritical set-up with uranium blanket used in experiments underway at JINR using a 0.6-4 GeV proton beam, is created. The neutron spectra, yields and energies of generated particles are calculated and compared for several modifications of the set-up. The influence of paraffin and graphite moderators on the characteristics of particles escaping lead target is studied. The modelled set-up can be considered as a first step to experiments with the designed at JINR U-Pu ADS SAD with heat power of several tens of kW

Mathematical Model of the Electronuclear Set-Up on the Beam of the JINR Synchrotron

CERN Document Server

Barashenkov, V S; Kumawat, H; Lobanova, V A

2004-01-01

On the base of the Monte Carlo code CASCADE, developed at JINR, a mathematical model of the deep-subcritical set-up with uranium blanket used in experiments underway at JINR using a 0.6-4 GeV proton beam, is created. The neutron spectra, yields and energies of generated particles are calculated and compared for several modifications of the set-up. The influence of paraffin and graphite moderators on the characteristics of particles escaping lead target is studied. The modelled set-up can be considered as a first step to experiments with the designed at JINR U-Pu ADS SAD with heat power of several tens of kW.

Dosimetry of medical proton beams at the JINR phasotron in Dubna

International Nuclear Information System (INIS)

Kovar, I.; Spurny, F.; Wagner, R.; Molokanov, A.G.; Mitsyn, G.V.; Zorin, V.P.

1993-01-01

The method for determination of the dose rate absorbed by tissue for JINR phasotron medical proton beams on a basis of clinical dosimeter calibration with the 60 Co γ-source, the main parameters of detectors used for measurements of spatial dose distributions, results of ion recombination correction factors in air thimble ionization chambers measurements are described. It is found that the error of JINR phasotron proton beams dosimetry is about 5%. This accuracy meets the international requirements for the therapeutic proton beams. 15 refs.; 4 figs

JINR CLOUD SERVICE FOR SCIENTIFIC AND ENGINEERING COMPUTATIONS

Directory of Open Access Journals (Sweden)

Nikita A. Balashov

2018-03-01

Full Text Available Pretty often small research scientific groups do not have access to powerful enough computational resources required for their research work to be productive. Global computational infrastructures used by large scientific collaborations can be challenging for small research teams because of bureaucracy overhead as well as usage complexity of underlying tools. Some researchers buy a set of powerful servers to cover their own needs in computational resources. A drawback of such approach is a necessity to take care about proper hosting environment for these hardware and maintenance which requires a certain level of expertise. Moreover a lot of time such resources may be underutilized because а researcher needs to spend a certain amount of time to prepare computations and to analyze results as well as he doesn’t always need all resources of modern multi-core CPUs servers. The JINR cloud team developed a service which provides an access for scientists of small research groups from JINR and its Member State organizations to computational resources via problem-oriented (i.e. application-specific web-interface. It allows a scientist to focus on his research domain by interacting with the service in a convenient way via browser and abstracting away from underlying infrastructure as well as its maintenance. A user just sets a required values for his job via web-interface and specify a location for uploading a result. The computational workloads are done on the virtual machines deployed in the JINR cloud infrastructure.

JINR rapid communications

International Nuclear Information System (INIS)

1996-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate reports on the identification of events with a secondary vertex in the experiment EXCHARM, the zero degree calorimeter for CERN WA-98 experiment, a new approach to increase the resource of installation elements for super-high energy physics, a method of the in-flight production of exotic systems in the charge-exchange reactions, the neutron activation analysis for monitoring northern terrestrial ecosystems, a search for 28 O and study of the neutron-rich nuclei near the neutron closure N=20, a search for new neutron-rich nuclei with a 70A MeV 48 Ca beam. 33 figs., 4 tabs

JINR rapid communications

International Nuclear Information System (INIS)

1999-01-01

The present collection of rapid communications from JINR, DUBNA, contains eight separate records on symmetry in modern physics (dedicated to the 100th anniversary of the birth of academician V.A.Fock), the double φ-meson production investigation on the Serpukhov accelerator, two-leptonic η-meson decays and SUSY without R parity, charge form factors and alpha-cluster internal structure of 12 C, increasing of muon-track reconstruction efficiency in ME1/1 Dubna prototype for the CMS/LHC, study of photon-structure function F 2 γ in the reaction e + e - → e + e - + hadrons at LEP2, jets reconstruction possibility in pAu and AuAu interactions at STAR RHIC and high-vacuum nondispersable gas absorber

JINR rapid communications

International Nuclear Information System (INIS)

1999-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate records on yields of the rare-earth neutron-deficient isotopes in the reactions of Mo isotopes with 40 Ca ions, observations of slow components of solitonic-type wave structure excited by e-beam in massive copper sample, development and investigation of low-mass multilayer drift chambers (MDC-2) for inner part of the HADES spectrometer, temperature measurement of the uranium sample irradiated with secondary neutrons, edge effects in multiwire proportional chambers, the influence of the dielectric frame, an object-oriented framework for the hadronic Monte-Carlo event generators and uranium-238 as a source for electronuclear power production. 32 figs., 3 tabs

JINR rapid communications

International Nuclear Information System (INIS)

1997-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate reports on observation of transversal handedness in the diffractive production of pion triples, a possible experiment on the research of dibaryon states, Cherenkov beam counter system of the CERES/NA45 spectrometer for investigation with 160 GeV/n. lead ions, a profile-based gaseous detector with capacitive pad readout as the prototype of the shower maximum detector for the end-cap electromagnetic calorimeter for the STAR experiment, what DELPHI can get with an upgraded position for the very small angle tagger, estimation of the radiation environment and the shielding aspect for the point 2 area of the LHC and the orthopositronium decay puzzle

JINR rapid communications

International Nuclear Information System (INIS)

1997-01-01

The present collection of rapid communications from JINR, Dubna, contains nine separate reports on effects arising from charged particles overcoming of the light velocity barrier, deformable templates for circle recognition, scintillation detectors for precise time measurements, atomic form factors and incoherent scattering functions of atoms and ions with the number of electrons N ≤ 10, experimental set-up ANOMALON for measurement of relativistic nuclear fragmentation cross sections, superconducting dipole magnet for ALICE dimuon arm spectrometer, analysis of transverse mass dependence of Bose-Einstein correlation radii using the DELPHI data, low-energy theorem in softly broken supersymmetry and study of the characteristics of particles in reactions π - , p, d, He, C + C with the total disintegration on carbon nucleus

The JINR Tier1 Site Simulation for Research and Development Purposes

Directory of Open Access Journals (Sweden)

Korenkov V.

2016-01-01

A system for grid and cloud services simulation is developed at LIT (JINR, Dubna. This simulation system is focused on improving the effciency of the grid/cloud structures development by using the work quality indicators of some real system. The development of such kind of software is very important for making a new grid/cloud infrastructure for such big scientific experiments like the JINR Tier1 site for WLCG. The simulation of some processes of the Tier1 site is considered as an example of our application approach.

Particles and nuclei, letters

International Nuclear Information System (INIS)

2004-01-01

The present collection of letters from JINR, Dubna, contains nine separate letters on nonlocal chiral quark model with confinement, perturbation of finite-lattice spectral levels by nearby nuclear resonances, on the application of 'Z 0 + jet' events for determining the gluon distribution in a proton at the LHC, account of light velocity constancy in the Galilean problem on the free movement of a particle and its fall onto the ground, first results of crystal deflector investigations at the Nuclotron external beams, decay parameters of K mesons, measured at proton synchrotron U-70 using 'Hyperon' set-up and modern world data, prototype of atomic-emission spectrometer on the basis of one-electrode impulse RF discharge for analytical measurements, polarimeter for Nuclotron internal beam and primordial bubbles of colour superconducting quark matter

Particles and Nuclei, Letters

International Nuclear Information System (INIS)

2004-01-01

The present collection of letters from JINR, Dubna, contains eight separate letters on analysis of experimental data on relativistic nuclear collisions in the Lobachevski space, relativistic contribution of the final-state interaction to deuteron photodisintegration, on the charge asymmetry of the like-sign lepton pairs induced by B - B bar - production asymmetry, limits on the ν e → ν e neutrino oscillation parameters from an experiment at the IHEP-JINR neutrino detector, excitation of high spin isomers in photonuclear reactions, study of product formation in proton-nuclear reactions on the 129 I target induced by 660-MeV protons, application of jet pumps in the cryogenic system of the Nuclotron - superconducting accelerator of relativistic particles and study of the silicon drift detector performance with inclined tracks

Creation of the precision magnetic spectrometer SCAN-3

Directory of Open Access Journals (Sweden)

Afanasiev S.V.

2017-01-01

Full Text Available The new JINR project [1] is aimed at studies of highly excited nuclear matter created in nuclei by a high-energy deuteron beam. The matter is studied through observation of its particular decay products - pairs of energetic particles with a wide opening angle, close to 180°. The new precision hybrid magnetic spectrometer SCAN-3 is to be built for detecting charged (π±, K±, p and neutral (n particles produced at the JINR Nuclotron internal target in dA collisions. One of the main and complex tasks is a study of low-energy ηA interaction and a search for η-bound states (η-mesic nuclei. Basic elements of the spectrometer and its characteristics are discussed in the article.

Creation of the precision magnetic spectrometer SCAN-3

Science.gov (United States)

Afanasiev, S. V.; Anisimov, Yu. S.; Baldin, A. A.; Berlev, A. I.; Dryablov, D. K.; Dubinchik, B. V.; Elishev, A. F.; Fateev, O. V.; Igamkulov, Z. A.; Krechetov, Yu. F.; Kudashkin, I. V.; Kuznechov, S. N.; Malakhov, A. I.; Smirnov, V. A.; Shimansky, S. S.; Kliman, J.; Matousek, V.; Gmutsa, S.; Turzo, I.; Cruceru, I.; Cruceru, M.; Constantin, F.; Niolescu, G.; Ciolacu, L.; Paraipan, M.; Vokál, S.; Vrláková, J.; Baskov, V. A.; Lebedev, A. I.; L'vov, A. I.; Pavlyuchenko, L. N.; Polyansky, V. V.; Rzhanov, E. V.; Sidorin, S. S.; Sokol, G. A.; Glavanakov, I. V.; Tabachenko, A. N.; Jomurodov, D. M.; Bekmirzaev, R. N.; Ibadov, R. M.; Sultanov, M. U.

2017-03-01

The new JINR project [1] is aimed at studies of highly excited nuclear matter created in nuclei by a high-energy deuteron beam. The matter is studied through observation of its particular decay products - pairs of energetic particles with a wide opening angle, close to 180°. The new precision hybrid magnetic spectrometer SCAN-3 is to be built for detecting charged (π±, K±, p) and neutral (n) particles produced at the JINR Nuclotron internal target in dA collisions. One of the main and complex tasks is a study of low-energy ηA interaction and a search for η-bound states (η-mesic nuclei). Basic elements of the spectrometer and its characteristics are discussed in the article.

Request language of the JINR information retrieval system

International Nuclear Information System (INIS)

Arnaudov, D.D.; Kozhenkova, Z.I.

1975-01-01

A classification of operating languages of information retreival systems (IRS) is given. A justification is made for the selection of the descriptor no-grammar language for coding documents and queries in the JINR IRS. A Boolean form query minimization algorithm is applied

JINR rapid communications

International Nuclear Information System (INIS)

1997-01-01

The present collection of rapid communications from JINR, Dubna, contains seven separate reports on investigation of the tensor analyzing power A yy in the reaction A(d polarized, p)X at large transverse momenta of proton, double-differential ionization cross section calculations for fast collisions of ions and atoms, a study of the two-photon interactions tagged at an average 2 > of 90 GeV 2 , cluster and single-particle distributions in nucleus-nucleus interactions, the Coulomb interaction of charged pions in CC-and CTa-collisions at 4.2 A GeV/c, influence of nitrogen and oxygen gas admixtures on the response of the DELPHI HCAL and MUS detectors and an automation of physics research on base of open standards

Control of the beam-internal target interaction at the nuclotron by means of light radiation

Energy Technology Data Exchange (ETDEWEB)

Artiomov, A.S. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation)]. E-mail: artiomov@moonhe.jinr.ru; Anisimov, Yu.S. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Afanasiev, S.V. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Bazilev, S.N. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Zolin, L.S. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Issinsky, I.B. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Kliman, J. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Institute of Physics, Slovak Academy of Sciences, Bratislava (Slovakia); Malakhov, A.I. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Matousek, V. [Institute of Physics, Slovak Academy of Sciences, Bratislava (Slovakia); Morhac, M. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Institute of Physics, Slovak Academy of Sciences, Bratislava (Slovakia); Nikitin, V.A. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Nikiforov, A.S. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Nomokonov, P.V. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Pilyar, A.V. [Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Turzo, I. [Institute of Physics, Slovak Academy of Sciences, Bratislava (Slovakia)

2005-02-11

The light radiation from various internal targets at the nuclotron can be utilized for the operative control and time optimization of the interaction intensity of the beam. The examples presented in the paper illustrate information about the space characteristics of the circulating beam during one cycle of the accelerator run at the stages of injection, acceleration and during the physical experiments, respectively.

The CERN-JINR Joint Physics Schools Exhibition Science Bringing Nations Together

CERN Multimedia

1997-01-01

Since 1970, CERN and JINR have been holding joint Schools of Physics attended by young scientists from many countries of the world. Here they not only learn the latest ideas in elementary particle physics but also become involved in a process that leads to better mutual understanding and rapprochement of people from different countries. Such schools may seem natural natural now, but long before the Berlin Wall and the Iron Curtain collapsed, they provided a unique opportunity for contact between young people from countries with different political systems. This long-standing co-operation between CERN and JINR helps to bridge the gap between East and West and stabilize the political situation.

The CERN-JINR Joint Physics Schools Exhibition Science Bringing Nations Together

CERN Multimedia

1999-01-01

Since 1970, CERN and JINR have been holding joint Schools of Physics attended by young scientists from many countries of the world. Here they not only learn the latest ideas in elementary particle physics but also become involved in a process that leads to better mutual understanding and rapprochement of people from different countries. Such schools may seem natural now, but long before the Berlin Wall and the Iron Curtain collapsed, they provided a unique opportunity for contact between young people from countries with different political systems. This long-standing co-operation between CERN and JINR helps to bridge the gap between East and West and stabilize the political situation.

Integrated cloud infrastructure of the LIT JINR, PE "NULITS" and INP's Astana branch

Science.gov (United States)

Mazhitova, Yelena; Balashov, Nikita; Baranov, Aleksandr; Kutovskiy, Nikolay; Semenov, Roman

2018-04-01

The article describes the distributed cloud infrastructure deployed on the basis of the resources of the Laboratory of Information Technologies of the Joint Institute for Nuclear Research (LIT JINR) and some JINR Member State organizations. It explains a motivation of that work, an approach it is based on, lists of its participants among which there are private entity "Nazarbayev University Library and IT services" (PE "NULITS") Autonomous Education Organization "Nazarbayev University" (AO NU) and The Institute of Nuclear Physics' (INP's) Astana branch.

Implementing of the nuclear materials accounting and control computerized system at JINR

International Nuclear Information System (INIS)

Dobryanskij, V.M.; Kalyakin, N.N.; Koltin, G.P.; Samojlov, V.N.; Cheker, A.V.; Shestakov, B.A.

2000-01-01

The results of the development of the computerized nuclear materials accounting system at the Joint Institute for Nuclear Research (JINR) are submitted. This work was carried out under Russian-American Nuclear Materials Protection, Control and Accounting (MPCandA) Program. The System was implemented at the Institute, it was attested to work with sensitive information. The computerized information nuclear materials accounting and control system, named MTIS (Materials Tracking Information System), is intended for the automated accounting of the nuclear materials used in JINR, tracking their moving, changes of their inventory amounts, preparation of the required documentation, and also for information support of the measures spent in the JINR on MPCandA program. MTIS can prepare reports for federal level and can also generate data to be reported for internal purposes. MTIS includes as one of the subsystems a program module to prepare reporting information to the Federal Information System (FIS). The system MTIS provides control of access to the database (DB), protection of the information against the non-authorized access, division of the data into the sensitive and non-sensitive data. (author)

Over 30 years of successful collaboration between JINR and INFN

International Nuclear Information System (INIS)

Piragino, G.; Pontecorvo, G.B.

2000-01-01

A short account of the successful 30-year long collaboration between the INFN section of Turin and the JINR Laboratory of Nuclear Problems is presented. Results obtained are discussed together with future plans

On the μSR activity at LNP JINR phasotron

International Nuclear Information System (INIS)

Gurevich, I.I.; Duginov, V.N.; Firsov, V.G.

1992-01-01

The current state of μSR activity at LNR JINR phasotron is presented, including short description of experimental facilities. The possible trends of μSR investigation for future work are outlined. The list of main publications (1987-1992) is included. 35 refs.; 1 fig

Diagnostics at JINR LHEP photogun bench

International Nuclear Information System (INIS)

Nozdrin, M.A.; Balalykin, N.I.; Minashkin, V.F.; Shirkov, G.D.

2016-01-01

The photoinjector electron beam quality dramatically depends on the laser driver beam quality. For laser beam diagnostics a 'virtual cathode' system was realized at the JINR LHEP photogun bench. The system allows one to image laser beam profile at the cathode. The AVINE software complex developed in DESY Zeuthen is being used for imaging. Equipment for emittance measurement using the slit method was installed. The original emittance calculation software EmCa was created and tested with the laser beam.

Low Energy Electron Cooler for NICA Booster

CERN Document Server

Denisov, A P

2017-01-01

BINP has developed an electron cooler to increase the ion accumulation efficiency in the NICA (Nuclotron-based Ion Collider fAcility) heavy ion booster (JINR, Dubna). Adjustment of the cooler magnetic system provides highly homogeneous magnetic field in the cooling section B trans/B long ≤ 4∙10-5 which is vital for efficient electron cooling. First experiments with an electron beam performed at BINP demonstrated the target DC current of 500 mA and electron energy 6 keV.

JINR rapid communications

International Nuclear Information System (INIS)

1998-01-01

The present collection of rapid communications from JINR, Dubna, contains six separate records on test of a threshold aerogel Cherenkov counter on cosmic particles, first results of study of transversal dimension of region of cumulative particles production in d + C and d + Cu reactions for energy 2 GeV/nucleon, the evidence of σ[0 + (0 ++ 0)] meson at a mass of M π + π - = 750 ± 5 MeV/c 2 observed in π + π - combinations from the reaction np → npπ + π - at an incident momentum of P n (5.20 ± 0.16 GeV/c, inclusive spectra of protons and π - mesons emitted in 4 HeC and 12 CC interactions with total disintegration of nuclei, heavy quark-antiquark pair production by double pomeron exchange in pp and AA collisions on the CMS and global features of nucleus-nucleus collisions in ultrarelativistic domain

1985 CERN-JINR school of physics

International Nuclear Information System (INIS)

1986-01-01

The CERN School of Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These Proceedings contain reports of lecture series on the following topics: introduction to gauge fields, perturbative QCD, proton-antiproton collider physics, lattice quantum field theories, experiments on weak decays of leptons and quarks, lepton-hadron interactions, supersymmetry, grand unified theories and cosmology. They also include reports of special lectures on sum rules and hadron properties in QCD, on quark distribution in nuclei, and on the scientific programme of JINR. (orig.)

Integrated cloud infrastructure of the LIT JINR, PE “NULITS” and INP's Astana branch

Directory of Open Access Journals (Sweden)

Mazhitova Yelena

2018-01-01

Full Text Available The article describes the distributed cloud infrastructure deployed on the basis of the resources of the Laboratory of Information Technologies of the Joint Institute for Nuclear Research (LIT JINR and some JINR Member State organizations. It explains a motivation of that work, an approach it is based on, lists of its participants among which there are private entity “Nazarbayev University Library and IT services” (PE “NULITS” Autonomous Education Organization “Nazarbayev University” (AO NU and The Institute of Nuclear Physics’ (INP's Astana branch.

Magnet sorting algorithms

International Nuclear Information System (INIS)

Dinev, D.

1996-01-01

Several new algorithms for sorting of dipole and/or quadrupole magnets in synchrotrons and storage rings are described. The algorithms make use of a combinatorial approach to the problem and belong to the class of random search algorithms. They use an appropriate metrization of the state space. The phase-space distortion (smear) is used as a goal function. Computational experiments for the case of the JINR-Dubna superconducting heavy ion synchrotron NUCLOTRON have shown a significant reduction of the phase-space distortion after the magnet sorting. (orig.)

Nucleon and meson beams of the JINR phasotron for fundamental and applied investigations

International Nuclear Information System (INIS)

Abazov, V.M.; Andreev, G.A.; Bragin, A.N.

1990-01-01

The paper throughly describes the medical beam lines and reports the results obtained in measurement of the physical and dosimetric characteristics of high energy neutron, meson and proton beams obtained at the JINR phasotron in the last three years. It is pointed out that for the present intensity of the extracted proton beam of the JINR phasotron 2.0-2.5 μA the meson beam intensities 10 3 s- 1 (π + -mesons) and 3x10 7 s -1 (π - -mesons) have been achieved with a wide-angle magnetic lens. These values correspond to the designed parameters of the facility 'F' meson beams for the extracted proton beam intensity planned to be 25 μA. Besides, a beam of so-called 'surface μ-muons (energy about 4 MeV) with the intensity 10 4 s -1 has been obtained. The achieved meason beam intensities make the possibilities of the JINR phasotron as high as those of small meson factories with the equivalent extracted proton beam current 20-25 μA and ensures progress both in meson physics studies and in fulfilment of some applied tasks. 20 refs.; 7 figs.; 8 tabs

Cryogenics of the new superconducting accelerator Nuclotron. The first year under operation

International Nuclear Information System (INIS)

Baldin, A.M.; Agapov, N.N.; Belushkin, V.A.; D'yachkov, E.I.; Khodzhibagiyan, G.G.; Kovalenko, A.D.; Kuznetsov, G.L.; Matyushevskij, E.A.; Smirnov, A.A.; Sukhanova, A.K.

1995-01-01

The 6 GeV superconducting synchrotron was commissioned in March 1993 at the Laboratory of High Energies of the Joint Institute for Nuclear Research in Dubna. Four runs of the total duration about 1000 hours were provided from March 1993 to March 1994. The cooling of the accelerator magnetic system of 250 meters long was performed by two helium refrigerators with a capacity of 1.6 kw at 4.5 K each. The magnets were refrigerated by a two-phase helium flow. All 160 magnets are connected in parallel to the supply and return helium headers. The description and operational characteristics of the Nuclotron cryogenic system are presented. 7 refs., 5 figs., 1 tab

Proceedings of the 2-nd workshop on JINR tau-charm factory

International Nuclear Information System (INIS)

Aleksandrov, V.S.; Perel'shtejn, E.A.

1993-01-01

Application of tau-charm factory for investigation of hadronic decay and charged leptonic weak interaction is considered. JINR tau-charm-factory design and magnetic and vacuum systems of the booster ring are described. New types of silicon microstrip detector sand BGO-counters developed for tau-charm-factory are proposed

High precision laser control of the ATLAS tile-calorimeter module mass production at JINR

International Nuclear Information System (INIS)

Batusov, V.; Budagov, Yu.; Flyagin, V.; Khubua, D.; Lomakin, Yu.; Lyablin, M.; Rusakovich, N.; Shabalin, D.; Topilin, N.; Nessi, M.

2001-01-01

We present a short description of our last few years experience in the quality control of the ATLAS hadron barrel tile-calorimeter module mass production at JINR. A Laser Measurement System (LMS) proposed and realized in Dubna guarantees a high-precision module assembly. The non-planarity of module size surfaces (1.9x5.6 m) controlled area is well within the required ±0.6 mm tolerance for each of JINR assembled modules. The module assembly technique achieved with the LMS system allows us to deliver to CERN one module every 2 weeks. This laser-based measurement system could be used in future for the control measurement of other large-scale units during the ATLAS assembly

PanDA for COMPASS at JINR

Science.gov (United States)

Petrosyan, A. Sh.

2016-09-01

PanDA (Production and Distributed Analysis System) is a workload management system, widely used for data processing at experiments on Large Hadron Collider and others. COMPASS is a high-energy physics experiment at the Super Proton Synchrotron. Data processing for COMPASS runs locally at CERN, on lxbatch, the data itself stored in CASTOR. In 2014 an idea to start running COMPASS production through PanDA arose. Such transformation in experiment's data processing will allow COMPASS community to use not only CERN resources, but also Grid resources worldwide. During the spring and summer of 2015 installation, validation and migration work is being performed at JINR. Details and results of this process are presented in this paper.

JINR rapid communications

International Nuclear Information System (INIS)

1995-01-01

The present collection of rapid communications from JINR, Dubna, contains twelve separate reports on an estimation of the possibility of fusion reactions in water molecules, an analysis of pion spectra of the charge-exchange reaction Mg(t, 3 He), the results of simulation of e + e - pair production and detection in the ALICE experiment, the data on the edge effects in multiwire proportional chambers, standard and nonstandard applications of wavelet analysis, the design and study of light readout system for scintillator shower maximum detector for the endcap electromagnetic calorimeter for the STAR experiment at RHIC, a study of multiparticle azimuthal correlations in high energy interactions, coherent multifragmentation of relativistic nuclei, superposition of neutrino eigenstates and neutrino oscillation, simulation results and suggestions for possible design of gaseous shower maximum detector for the endcap electromagnetic calorimeter for the STAR experiment at RHIC, determination of the sizes of the pion emission region in np-interactions at P n =(5.2±0.16)GeV/c using the interference correlation method for identical particles, inelasticity of nucleus-nucleus collisions in the CMS experiment. 65 figs., 19 tabs

The movable polarized target as a basic equipment for high energy spin physics experiments at the JINR-Dubna accelerator complex

Energy Technology Data Exchange (ETDEWEB)

Lehar, F.; Adiasevich, B.; Androsov, V.P.; Angelov, N.; Anischenko, N.; Antonenko, V.; Ball, J.; Baryshevsky, V.G.; Bazhanov, N.A.; Belyaev, A.A.; Benda, B.; Bodyagin, V.; Borisov, N.; Borzunov, Yu.; Bradamante, F.; Bunyatova, E.; Burinov, V.; Chernykh, E.; Combet, M.; Datskov, A.; Durand, G.; Dzyubak, A.P.; Fontaine, J.M.; Get`man, V.A.; Giorgi, M.; Golovanov, L.; Grebenyuk, V.; Grosnick, D.; Gurevich, G.; Hasegawa, T.; Hill, D.; Horikawa, N.; Igo, G.; Janout, Z.; Kalinnikov, V.A.; Karnaukhov, I.M.; Kasprzyk, T.; Khachaturov, B.A.; Kirillov, A.; Kisselev, Yu.; Kousmine, E.S.; Kovalenko, A.; Kovaljov, A.I.; Ladygin, V.P.; Lazarev, A.; Leconte, P.; Lesquen, A. de; Lukhanin, A.A.; Mango, S.; Martin, A.; Matafonov, V.N.; Matyushevsky, E.; Mironov, S.; Neganov, A.B.; Neganov, B.S.; Nomofilov, A.; Perelygin, V.; Plis, Yu.; Pilipenko, Yu.; Pisarev, I.L.; Piskunov, N.; Polunin, Yu.; Popkov, Yu.P.; Propov, A.A.; Prokofiev, A.N.; Rekalo, M.P.; Rukoyatkin, P.; Sans, J.L.; Sapozhnikov, M.G.; Sharov, V.; Shilov, S.; Shishov, Yu.; Sitnik, I.M.; Sorokin, P.V.; Spinka, H.; Sporov, E.A.; Strunov, L.N.; Svetov, A.; De Swart, J.J.; Telegin, Yu.P.; Tolmashov, I.; Trentalange, S.; Tsvinev, A.; Usov, Yu.A.; Vikhrov, V.V.; Whitten, C.A.; Zaporozhets, S.; Zarubin, A.; Zhdanov, A.A.; Zolin, L. [CEA Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. d`Astrophysique, de Physique des Particules, de Physique Nucleaire et de l`Instrumentation Associee]|[I.V. Kurchatov Inst. of Atomic Energy, Moscow (Russian Federation)]|[Kharkov Inst. of Physics and Technology (Russian Federation)]|[Lab. of Nuclear Problems, JINR, Dubna (Russian Federation)]|[Lab. of High Energy Physics, JINR, Dubna (Russian Federation)]|[Lab. National SATURNE, CNRS, 91 - Gif-sur-Yvette (France)]|[Inst. of Physics, Belarus Academy of Sciences, Minsk (Belarus)]|[Dept. of Physics, Petersburg Nuclear Physics Inst., Gatchina (Russian Federation)

1995-03-01

A movable polarized proton target is planned to be installed in polarized beams of the Synchrophasotron-Nuclotron complex in order to carry out a spin physics experimental program at Dubna. The project is described and the first proposed experiments are discussed. ((orig.))

The movable polarized target as a basic equipment for high energy spin physics experiments at the JINR-Dubna accelerator complex

International Nuclear Information System (INIS)

Lehar, F.; Adiasevich, B.; Androsov, V.P.; Angelov, N.; Anischenko, N.; Antonenko, V.; Ball, J.; Baryshevsky, V.G.; Bazhanov, N.A.; Belyaev, A.A.; Benda, B.; Bodyagin, V.; Borisov, N.; Borzunov, Yu.; Bradamante, F.; Bunyatova, E.; Burinov, V.; Chernykh, E.; Combet, M.; Datskov, A.; Durand, G.; Dzyubak, A.P.; Fontaine, J.M.; Get'man, V.A.; Giorgi, M.; Golovanov, L.; Grebenyuk, V.; Grosnick, D.; Gurevich, G.; Hasegawa, T.; Hill, D.; Horikawa, N.; Igo, G.; Janout, Z.; Kalinnikov, V.A.; Karnaukhov, I.M.; Kasprzyk, T.; Khachaturov, B.A.; Kirillov, A.; Kisselev, Yu.; Kousmine, E.S.; Kovalenko, A.; Kovaljov, A.I.; Ladygin, V.P.; Lazarev, A.; Leconte, P.; Lesquen, A. de; Lukhanin, A.A.; Mango, S.; Martin, A.; Matafonov, V.N.; Matyushevsky, E.; Mironov, S.; Neganov, A.B.; Neganov, B.S.; Nomofilov, A.; Perelygin, V.; Plis, Yu.; Pilipenko, Yu.; Pisarev, I.L.; Piskunov, N.; Polunin, Yu.; Popkov, Yu.P.; Propov, A.A.; Prokofiev, A.N.; Rekalo, M.P.; Rukoyatkin, P.; Sans, J.L.; Sapozhnikov, M.G.; Sharov, V.; Shilov, S.; Shishov, Yu.; Sitnik, I.M.; Sorokin, P.V.; Spinka, H.; Sporov, E.A.; Strunov, L.N.; Svetov, A.; De Swart, J.J.; Telegin, Yu.P.; Tolmashov, I.; Trentalange, S.; Tsvinev, A.; Usov, Yu.A.; Vikhrov, V.V.; Whitten, C.A.; Zaporozhets, S.; Zarubin, A.; Zhdanov, A.A.; Zolin, L.

1995-01-01

A movable polarized proton target is planned to be installed in polarized beams of the Synchrophasotron-Nuclotron complex in order to carry out a spin physics experimental program at Dubna. The project is described and the first proposed experiments are discussed. ((orig.))

Spallation Neutron Spectrum on a Massive Lead/Paraffin Target Irradiated with 1 GeV Protons

CERN Document Server

Adam, J; Barashenkov, V S; Brandt, R; Golovatiouk, V M; Kalinnikov, V G; Katovsky, K; Krivopustov, M I; Kumar, V; Kumawat, H; Odoj, R; Pronskikh, V S; Solnyshkin, A A; Stegailov, V I; Tsoupko-Sitnikov, V M; Westmeier, W

2004-01-01

The spectra of gamma-ray emitted by decaying residual nuclei, produced by spallation neutrons with (n, xn), (n,xnyp), (n,p), (n,gamma) reactions in activation threshold detectors - namely, ^{209}Bi, ^{197}Au, ^{59}Co, ^{115}In, ^{232}Th, were measured in the Laboratory of Nuclear Problems (LNP), JINR, Dubna, Russia. Spallation neutrons were generated by bombarding a 20 cm long cylindrical lead target, 8 cm in diameter, surrounded by a 6 cm thick layer of paraffin moderator, with a 1 GeV proton beam from the Nuclotron accelerator. Reaction rates and spallation neutron spectrum were measured and compared with CASCADE code calculations.

Eta-mesic nuclei formation in dA-collisions at the nuclotron (first results of the experimental study)

International Nuclear Information System (INIS)

Artemov, A.S.; Afanasiev, S.V.; Bekmirzaev, R.N.; Dryablov, D.K.; Igamkulov, Z.A.; Ivanov, V.I.; Isupov, A.Ju.; Malakhov, A.I.; Lebedev, A.I.; L'vov, A.I.; Pavlyuchenko, L.N.; Polyansky, V.V.; Sidorin, S.S.; Sokol, G.A.

2006-01-01

Full text: We present the first results on searching up of η -mesic nuclei obtained on an internal beam of Nuclotron. The reaction d + C→π+ p + was investigated for two energies of deuterons - 1.4 AGeV and 1.5 AGeV. For energy 1.5 AGeV in the spectrum of effective mass of proton-meson pairs the similarity of a resonance in region 1500 MeV is found. The analysis of the obtained data is given. (author)

Treatment of the uterus cervix cancer with the JINR phasotron proton beam

International Nuclear Information System (INIS)

Astrakhan, B.V.; Kiseleva, V.N.; Pojdenko, V.K.; Klochkov, I.I.; Molokanov, A.G.; Mitsin, G.V.; Savchenko, O.V.; Zorin, V.P.

1995-01-01

The methods of the uterus cervix cancer proton-and-gamma treatment for the first time were elaborated in the CRC RAMS and ITEP in Moscow and then developed for the JINR proton beam in Dubna. The results of the clinical probation of the methods for the uterus cervix cancer treatment have confirmed the advantage of the proton irradiation. The most important advantage of the proton beam treatment is absence of postradiation reactions and complications in the critical organs (bladder and rectum). Up to now 31 patients with the uterus cervix cancer have been treated at the JINR phasotron. 6 of them had proton-and-gamma treatment combined with surgical operation and 22 patients received a radical proton-and-gamma treatment (without surgery). The clinical results are in good agreement with the preceding results of the ITEP group. After receiving proton-and-gamma radiotherapy of the uterus cervix, 83% of the patients are alive without recurrences, metastases and complications. 10 refs., 4 figs., 2 tabs

X-ray detectors for structure investigations constructed at JINR

Energy Technology Data Exchange (ETDEWEB)

Chernenko, S P [LHE Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Cheremukhina, G A [LHE Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Fateev, O V [LHE Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Smykov, L P [LHE Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Vasiliev, S E [LHE Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Zanevsky, Yu V [LHE Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Kheiker, D M [Institute of Crystallography, Leninsky prosp. 59, 117333 Moscow (Russian Federation); Popov, A N [Institute of Crystallography, Leninsky prosp. 59, 117333 Moscow (Russian Federation)

1994-09-01

The performance characteristics of a few high resolution position-sensitive detectors constructed at JINR are presented. The detectors supplied with original software operate with an IBM PC/AT. One of these devices has been succesfully applied for protein molecule structure investigations and the other for studies of the structure-forming process during combustion. The preliminary parameters of the high count rate MWPC with parallel electronics and the testing results of the microstrip detector are given. ((orig.))

Local computer network of the JINR Neutron Physics Laboratory

International Nuclear Information System (INIS)

Alfimenkov, A.V.; Vagov, V.A.; Vajdkhadze, F.

1988-01-01

New high-speed local computer network, where intelligent network adapter (NA) is used as hardware base, is developed in the JINR Neutron Physics Laboratory to increase operation efficiency and data transfer rate. NA consists of computer bus interface, cable former, microcomputer segment designed for both program realization of channel-level protocol and organization of bidirectional transfer of information through direct access channel between monochannel and computer memory with or witout buffering in NA operation memory device

JINR tau-charm factory design study

International Nuclear Information System (INIS)

Perel'shtejn, E.; Aleksandrov, V.; Antropov, V.

1993-01-01

The review on tau-charm factory in JINR (Dubna) is presented. The structure scheme of tau-charm factory is described. The problems on injection complex are discussed: the composition, the working regime and parameters. The magnetic lattice of a booster is described. A versatile magnet lattice is used in tau-charm collider. It can realize both conventional flat beam scheme and monochromatization scheme. The results of chromaticity correction in high emittance lattice are presented. The list of parameters of tau-charm collider is given. The technical proposal of magnetic elements of booster and collider and their power supplies is made, as well as RF power supply in collider and vacuum system in its periodic cell. 12 refs.; 12 figs.; 3 tabs

Organization of the STAR experiment software framework at JINR. Results and experience from the first two years of work

International Nuclear Information System (INIS)

Arkhipkin, D.A.; Zul'karneeva, Yu.R.

2004-01-01

The organization of STAR experiment software framework at JINR is described. The approach being based on the distributed file system ASF was implemented at the NEOSTAR minicluster at LPP, JINR. An operation principle of the cluster as well as its work description and samples of the performed analysis are also given. The results of the NEOSTAR minicluster performance have demonstrated broad facilities of the distributed computing concept to be employed in experimental data analysis and high-energy physics modeling

Life sciences research at JINR, Dubna, Russia

International Nuclear Information System (INIS)

Frontasyeva, M.V.

2007-01-01

Within the broad spectrum of activities in the Life Sciences at JINR such as nuclear medicine and pharmacy, radiation biology, radioecology, radioisotope production radioanalytical investigations play a special role due to the long-term experience in multi-element instrumental neutron activation analysis (INAA) at the reactor IBR-2 of FLNP, JINR. INAA is presently being used in several projects on air pollution studies using bio monitors (moss, lichens, tree bark). The results for some selected areas of Central Russia, South Urals, and countries of Europe (Bulgaria, Poland, Romania, Bosnia and Herzegovina, Serbia and Montenegro, Macedonia, Slovakia, Western Ukraine) are reported to the European Atlas of Heavy Metal Atmospheric Deposition edited under the auspices of the Environmental Commission of the United Nations. Battering-ram studies using NAA were initiated also in Turkey, China and South Korea. Applied to the analysis of air filters, INAA is successfully used in assessing quality of London underground air, Sahara desert impact on the Greater Cairo Area. Epithermal activation analysis in combination with atomic absorption spectrometry and energy-disperse X-ray fluorescence allowed source evaluation of metals in soil from some industrial and metropolitan areas of Russia (South Urals, Cola Peninsula) and the USA (Minneapolis). The analytical possibilities of NAA are favorably used in biotechnology, (i) for investigation of bacterial leaching of metals, including uranium and thorium from low-grade ores, rocks and industrial wastes; (i i) in the development of new pharmaceuticals based on the blue-green alga Spirulina platensis. Occupational health studies are carried out at several fertilizer plants in Russia, Uzbekistan, Poland, Romania, Denmark and the Netherlands in the framework of the 5th Programme Copernicus. The quality of foodstuffs grown in some contaminated areas of Russia is investigated in the framework of IAEA Coordinated Research Programme. In

Respectives of heavy ion physics in JINR

International Nuclear Information System (INIS)

Flerov, G.N.

1983-01-01

Perspectives of heavy ion physics in JINR are discussed. The main attention is paid to directions that are connected with the application of intensive beams of U-400 cyclotron. Experiments into studying stability limits of heavy atomic nuclei are considered. The possibility of using beams of heavy ions in applied fields, particularly for the production of very thin nuclear filters is noted. Prospects of synthesis of superheavy elements (SHE) and SHE search in nature are also considered. The data on the events of spontaneous fission found in meteorite and hydrotherms and the data on lengths of tracks in olivines from meteorite prove the possibility of obtaining evidences of SHE existence in nature

2016 CERN-JINR European School of High-Energy Physics

CERN Multimedia

2016-01-01

The 2016 CERN-JINR European School of High-Energy Physics will take place in Skeikampen (near to Lillehammer), Norway, on 15-28 June 2016.   The School is targeted particularly at students in experimental HEP, who are in the final years of work towards their PhDs, although candidates at an earlier or later stage in their studies may be considered. ** The deadline for applications has been extended to 19 February 2016 ** Sponsorship may be available for a small number of students from developing countries. Further details are available here.

Relations with the Joint Institute for Nuclear Research (JINR) and draft agreement between UNESCO and that body. Executive Board 151. session. Item 9.11 of the provisional agenda

International Nuclear Information System (INIS)

Mayor, F.; Kadyshevsky, V.G.

1997-01-01

This document contains a proposal for the conclusion of an agreement between UNESCO and the Joint Institute for Nuclear Research (JINR) in Dubna (Russian Federation) in order to promote international co-operation for research on the fundamental properties of matter. The proposal made was initiated by JINR which is an international intergovernmental organization with 18 Member States. In accordance with Article XI.1 of UNESCO's Constitution, the Director-General requests the Executive Board's approval of the draft agreement with JINR

Relativistic polarized neutrons at the Laboratory of High Energy Physics, JINR

International Nuclear Information System (INIS)

Kirillov, A.; Komolov, L.; Kovalenko, A.; Matyushevskij, E.; Nomofilov, A.; Rukoyatkin, P.; Sharov, V.; Starikov, A.; Strunov, L.; Svetov, A.

1996-01-01

Using slowly extracted polarized deuterons, available at the accelerator facility of the Laboratory of High Energy Physics, JINR, polarized quasi-monochromatic neutrons with momenta from 1.1 to 4.5 GeV/c have been generated. Depending on momentum, from 10 4 to 10 6 polarized neutrons per accelerator cycle were produced. At present, the polarized neutrons are mainly intended for measuring the (n vec, p vec) total cross section differences. 6 refs., 2 figs

Particles and nuclei, letters

International Nuclear Information System (INIS)

2004-01-01

The present collection of letters from JINR, Dubna, contains nine separate letters on data on elastic (p,n) charge exchange: compilation, the potentialities of δ-electron control of luminosity in experiments with internal targets at the Nuclotron, pion broadening and low-mass dilepton production, fluctuation of electromagnetic cascade axis in dense amorphous segmented media, the forward detector of the ANKE spectrometer. Tracking system and its use in data analysis, quantum field theory with three-dimensional vector time, curvature decomposition and the Einstein-Yang-Mills equations, an integral equation for the spinor amplitude of a massive neutral Dirac particle in a curved space time with arbitrary geometry and surprising resonances in 147 Sm(nα) 144 Nd reaction

Particles and nuclei, letters

International Nuclear Information System (INIS)

2000-01-01

The present collection of letters from JINR, Dubna, contains nine separate records on the new results on simulation of the nuclotron beam extraction with a bent crystal, the Ehrenfest force in inhomogeneous magnetic field, the e/h ratio of the electromagnetic calorimeter, a new approach to develop hadronic event generators in HEP, an algebraic description of multilayer systems with resonances, a high-voltage module for photomultipliers, an estimation of the spin-flip contribution to the np→pn process from the charge exchange reaction on the deuteron, a measurement of the tensor analyzing powers in the dd→ 3 Hp reactions at RIKEN as well as on calibration of SPES4-π set-up in experiments on SATURNE-II

Neutron Production in Spallation Reactions of 0.9 and 1.5 GeV Protons on a Thick Lead Target. Comparison between Experimental Data and Monte-Carlo Simulations

CERN Document Server

Krasa, A; Bradnova, V; Caloun, P; Chultem, D; Henzl, V; Henzlová, D; Kalinnikov, V G; Krivopustov, M I; Krízek, F; Kugler, A; Majerle, M; Solnyshkin, A A; Stegailov, V I; Tsoupko-Sitnikov, V M; Tumendelger, T; Vasilev, S I; Wagner, V; Nuclear Physics Institute of Academy of Sciences of Czech Republic, Rez, Czech Republic

2005-01-01

This paper reports on two experiments performed at the Synchrophasotron/Nuclotron accelerator complex at JINR. Relativistic protons with energies 885 MeV and 1.5 GeV hit a massive cylindrical lead target. The spatial and energetic distributions of the neutron field produced by the spallation reactions were measured by the activation of Al, Au, Bi, Co, and Cu foils placed on the surface of the target and close to it. The yields of the radioactive nuclei produced by threshold reactions in these foils were determined by the analyses of their $\\gamma$ spectra. The comparison with Monte-Carlo based simulations was performed both with the LAHET+MCNP code and the MCNPX code.

Neutron production in spallation reactions of 0.9 and 1.5 GeV protons on a thick lead target. Comparison between experimental data and Monte-Carlo simulations

International Nuclear Information System (INIS)

Krasa, A.; Krizek, F.; Wagner, V.; Kugler, A.; Henzl, V.; Henzlova, D.; Majerle, M.; Adam, J.; Caloun, P.; Bradnova, V.; Chultem, D.; Kalinnikov, V.G.; Krivopustov, M.I.; Solnyshkin, A.A.; Stegajlov, V.I.; Tsupko-Sitnikov, V.M.; Tumehndehlgehr, Ts.; Vasil'ev, S.I.

2005-01-01

This paper reports on two experiments performed at the Synchrophasotron/Nuclotron accelerator complex at JINR. Relativistic protons with energies 885 MeV and 1.5 GeV hit a massive cylindrical lead target. The spatial and energetic distributions of the neutron field produced by the spallation reactions were measured by the activation of Al, Au, Bi, Co, and Cu foils placed on the surface of the target and close to it. The yields of the radioactive nuclei produced by threshold reactions in these foils were determined by the analyses of their γ spectra. The comparison with Monte-Carlo based simulations was performed both with the LAHET+MCNP code and the MCNPX code

Rated parameters of the JINR synchrotron radiation source for the electron energy 0.7 GeV

International Nuclear Information System (INIS)

Aksenov, V.L.; Belushkin, A.V.; Meshkov, I.N.; Syresin, E.M.; Tyutyunnikov, S.I.

1998-01-01

This paper gives the first estimates of the rated parameters of the JINR compact synchrotron radiation (SR) source for the electron energy 0.7 GeV. The realization of the JINR SR source which incorporates superconducting wigglers and an undulator will make it possible to construct few channels for hard X-rays with the energy up to 10 keV. The project for the construction of the SR source is motivated by the purposes of X-ray lithography and micromechanics, the so-called LIGA process. The energy spectrum of SR from the bending magnets in the source covers the energy range from infra-red to ultra-violet. This SR can be used at several stations for investigations in the field of condensed matter physics in the infra-red region, such as studies of impurities in semiconductors, measurements of the superconducting gap, radiometry in the vacuum ultra-violet region

Computer codes for shaping the magnetic field of the JINR phasotron

International Nuclear Information System (INIS)

Zaplatin, N.L.; Morozov, N.A.

1983-01-01

The computer codes providing for the shaping the magnetic field of the JINR high current phasotron are presented. Using these codes the control for the magnetic field mapping was realized in on- or off-line regimes. Then these field parameters were calculated and ferromagnetic correcting elements and trim coils setting were chosen. Some computer codes were realised for the magnetic field horizontal component measurements. The data are presented on some codes possibilities. The codes were used on the EC-1010 and the CDC-6500 computers

Current status of GALS setup in JINR

Energy Technology Data Exchange (ETDEWEB)

Zemlyanoy, S., E-mail: zemlya@jinr.ru; Avvakumov, K., E-mail: kavvakumov@jinr.ru [Joint Institute for Nuclear Research, Flerov Laboratory of Nuclear Reactions (Russian Federation); Fedosseev, V. [CERN (Switzerland); Bark, R. [Nat. Research Foundation, iThemba LABS (South Africa); Blazczak, Z. [A. Mickiewicz University, Faculty of Physics (Poland); Janas, Z. [University of Warsaw, Faculty of Physics (Poland)

2017-11-15

This is a brief report on the current status of the new GAs cell based Laser ionization Setup (GALS) at the Flerov Laboratory for Nuclear Reactions (FLNR) of the Joint Institute for Nuclear Research (JINR) in Dubna. GALS will exploit available beams from the U-400M cyclotron in low energy multi-nucleon transfer reactions to study exotic neutron-rich nuclei located in the “north-east” region of nuclear map. Products from 4.5 to 9 MeV/nucleon heavy-ion collisions, such as {sup 136}Xe on {sup 208}Pb, are thermalized and neutralized in a high pressure gas cell and subsequently selectively laser re-ionized. In order to choose the best scheme of ion extraction the results of computer simulations of two different systems are presented. The first off- and online experiment will be performed on osmium atoms that is regarded as a most convenient element for producing isotopes with neutron number in the vicinity of the magic N = 126.

Signal shape registration in the JINR synchrophasotron slowly extracted beam parameter control system

International Nuclear Information System (INIS)

Volkov, V.I.; Kulikov, I.I.; Romanov, S.V.

1982-01-01

Signal shape registration in the JINR synchrophasotron slowly estracted beam parameter control system on-line with the ES-1010 computer is described. 32 input signals can be connected to the registrator. The maximum measurement rate of signal shape registration is about 38 kHz. The registrator consists of 32-channel analog multiplexer, 10-bit analog-to-digital converter, 1024-word buffer memory and control circuits. For information representation the colour TV monitor is used

A new generation of fast cycling superconducting magnets for the accelerator system of FAIR - R and D process and present test status

Energy Technology Data Exchange (ETDEWEB)

Fischer, Egbert; Schnizer, Pierre [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Darmstadt (Germany); Mierau, Anna [Technische Universitaet Darmstadt (DE). Institut fuer Theorie Elektromagnetischer Felder (TEMF)

2010-07-01

The SIS100 is the core component of the FAIR accelerator complex. It will be the largest fast ramped synchrotron for heavy ion research using superconducting magnets. Starting from the design of its ancestor the Nuclotron in JINR Dubna we accomplished an intensive R and D process to develop magnets fulfilling the ambitious requirements for SIS100 operation concerning field quality, cycling frequency, cryogenic losses and reliability. In addition the beam pipe has to operate as a cryopump to reach extremely low vacuum pressures. We describe the different design modifications required to minimise the AC losses as well as to get a better field quality. We show the current vacuum chamber design and present the measurements result obtained for the first prototype dipole.

Exchange of equipment between CERN and JINR

CERN Multimedia

CERN Bulletin

2010-01-01

The drift chambers of the former NA48 experiment have recently left CERN to be installed in the MPD experiment at the future NICA accelerator in Dubna, Russia. As a counterpart, the JINR Laboratory will produce drift chambers for the new NA62 experiment. This operation is a fruitful exchange of technology that profits both laboratories and enhances their collaboration.   On 22 July, in the occasion of the departure of the chambers from CERN, Mikhail Itkis (centre), acting Director of the JIINR visited the NA62 experimental area accompanied by Rolf Heuer (left), CERN Director General and Ferdinand Hahn, NA62 technical Co-ordinator. The NA48 drift chambers were overhauled in 2000 and employed until 2008. With a total of 110 kilometres of wire soldered to a very high degree of precision, the four drift chambers were a crucial element of the experimental kaon programme at CERN. The chambers are now moving to a new challenge as they will be re-used by the Multi Purpose Detector (MPD) experiment, under...

DAQ system for high energy polarimeter at the LHE, JINR: implementation based on the qdpb (data processing with branchpoints) system

International Nuclear Information System (INIS)

Isupov, A.Yu.

2001-01-01

Online data acquisition (DAQ) system's implementation for the High Energy Polarimeter (HEP) at the LHE, JINR is described. HEP DAQ is based on the qdpb system. Software modules specific for such implementation (HEP data and hardware dependent) are discussed

Current experiments using polarized beams of the JINR LHE accelerator complex

International Nuclear Information System (INIS)

Lehar, F.

2001-01-01

The present review is devoted to the spin-dependent experiments carried out or prepared at the JINR LHE Synchrocyclotron. The acceleration of polarized deuterons, and experiments using the internal targets, the beam extraction and the polarimetry are briefly described. Then, representative experiments using either the extracted deuteron beam or secondary beams of polarized nucleons produced by polarized deuterons are treated. Three current experiments: 'DELTA-SIGMA', 'DELTA' and 'pp-SINGLET', require the polarized nucleon beams in conjunction with the Dubna polarized proton target. Already available Δσ L (np) results from the first experiment show unexpected energy dependence. Experiment 'DELTA' should investigate the nucleon strangeness. The aim of the third experiment is to study a possible resonant behavior of the spin-singlet pp scattering amplitude. For all other Dubna experiments unpolarized nucleon or nuclei targets are used. The polarized deuteron beam allows determining spin-dependent observable necessary for understanding the deuteron structure, as well as the nucleon substructure. One part of investigations concerns deuteron break-up reactions and deuteron proton backward elastic scattering. A considerable amount of data was obtained in this domain. Another part is dedicated to the measurements of the same spin-dependent observable in a 'cumulative' region. Interesting results were obtained for proton or pion productions in inclusive and semi-inclusive measurements. In the field of inelastic deuteron reactions, the analyzing power measurements were performed in the region covering Roper resonances. Many existing models are in disagreement with observed momentum dependences of different results. Finally, the proton-carbon analyzing power measurements extended the momentum region of rescattering observables. Some inclusive Dubna results are compared to exclusive Saclay data, and to lepton-deuteron measurements. Most of the JINR LHE experiments are

Superconducting racetrack booster for the ion complex of MEIC

Energy Technology Data Exchange (ETDEWEB)

Filatov, Yu [Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation); Moscow Inst. of Physics and Technology (MIPT), Moscow (Russian Federation); Kondratenko, A. M. [Science and Technique Laboratory ' Zaryad' , 630090, Novosibirsk, Russia; Kondratenko, M. A. [Science and Technique Laboratory ' Zaryad' , 630090, Novosibirsk, Russia; Kovalenko, A. [Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation); Derbenev, Yaroslav S. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Lin, Fanglei [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Morozov, Vasiliy S. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Zhang, Yuhong [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

2016-02-01

The current design of the Medium-energy Electron-Ion Collider (MEIC) project at Jefferson lab features a single 8 GeV/c figure-8 booster based on super-ferric magnets. Reducing the circumference of the booster by switching to a racetrack design may improve its performance by limiting the space charge effect and lower its cost. We consider problems of preserving proton and deuteron polarizations in a superconducting racetrack booster. We show that using magnets based on hollow high-current NbTi composite superconducting cable similar to those designed at JINR for the Nuclotron guarantees preservation of the ion polarization in a racetrack booster up to 8 GeV/c. The booster operation cycle would be a few seconds that would improve the operating efficiency of the MEIC ion complex.

Monte carlo simulations of Yttrium reaction rates in Quinta uranium target

Science.gov (United States)

Suchopár, M.; Wagner, V.; Svoboda, O.; Vrzalová, J.; Chudoba, P.; Tichý, P.; Kugler, A.; Adam, J.; Závorka, L.; Baldin, A.; Furman, W.; Kadykov, M.; Khushvaktov, J.; Solnyshkin, A.; Tsoupko-Sitnikov, V.; Tyutyunnikov, S.; Bielewicz, M.; Kilim, S.; Strugalska-Gola, E.; Szuta, M.

2017-03-01

The international collaboration Energy and Transmutation of Radioactive Waste (E&T RAW) performed intensive studies of several simple accelerator-driven system (ADS) setups consisting of lead, uranium and graphite which were irradiated by relativistic proton and deuteron beams in the past years at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. The most recent setup called Quinta, consisting of natural uranium target-blanket and lead shielding, was irradiated by deuteron beams in the energy range between 1 and 8 GeV in three accelerator runs at JINR Nuclotron in 2011 and 2012 with yttrium samples among others inserted inside the setup to measure the neutron flux in various places. Suitable activation detectors serve as one of possible tools for monitoring of proton and deuteron beams and for measurements of neutron field distribution in ADS studies. Yttrium is one of such suitable materials for monitoring of high energy neutrons. Various threshold reactions can be observed in yttrium samples. The yields of isotopes produced in the samples were determined using the activation method. Monte Carlo simulations of the reaction rates leading to production of different isotopes were performed in the MCNPX transport code and compared with the experimental results obtained from the yttrium samples.

Monte carlo simulations of Yttrium reaction rates in Quinta uranium target

Directory of Open Access Journals (Sweden)

Suchopár M.

2017-01-01

Full Text Available The international collaboration Energy and Transmutation of Radioactive Waste (E&T RAW performed intensive studies of several simple accelerator-driven system (ADS setups consisting of lead, uranium and graphite which were irradiated by relativistic proton and deuteron beams in the past years at the Joint Institute for Nuclear Research (JINR in Dubna, Russia. The most recent setup called Quinta, consisting of natural uranium target-blanket and lead shielding, was irradiated by deuteron beams in the energy range between 1 and 8 GeV in three accelerator runs at JINR Nuclotron in 2011 and 2012 with yttrium samples among others inserted inside the setup to measure the neutron flux in various places. Suitable activation detectors serve as one of possible tools for monitoring of proton and deuteron beams and for measurements of neutron field distribution in ADS studies. Yttrium is one of such suitable materials for monitoring of high energy neutrons. Various threshold reactions can be observed in yttrium samples. The yields of isotopes produced in the samples were determined using the activation method. Monte Carlo simulations of the reaction rates leading to production of different isotopes were performed in the MCNPX transport code and compared with the experimental results obtained from the yttrium samples.

Three stages of the NICA accelerator complex

Energy Technology Data Exchange (ETDEWEB)

Kekelidze, V.D.; Lednicky, R. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Matveev, V.A.; Sorin, A.S. [Joint Institute for Nuclear Research, Dubna (Russian Federation); National Research Nuclear University (MEPhI), Moscow (Russian Federation); Meshkov, I.N.; Trubnikov, G.V. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Sankt-Petersburg State University, Sankt-Petersburg (Russian Federation)

2016-08-15

The Nuclotron-based Ion Collider fAcility (NICA) project is under development at JINR (Dubna). The general goals of the project are to provide colliding beams for experimental studies of both hot and dense strongly interacting baryonic matter and spin physics (in collisions of polarized protons and deuterons). The first program will require the running of heavy-ion mode in the energy range of √(s{sub NN}) = 4-11 GeV at luminosities up to L = 1 . 10{sup 27} cm{sup -2} s{sup -1} for {sup 197}Au{sup 79} nuclei (see details in sect. 4). This stage of the project will be preceded by fixed target experiments with the heavy-ion beam to be extracted from the Nuclotron at kinetic energies up to 4.5 GeV/u. The polarized beam mode is proposed to be used in the energy range of √(s{sub NN}) = 12-27 GeV (protons) at luminosities up to 1 . 10{sup 32} cm{sup -2} s{sup -1}. This report contains a brief description of the facility scheme and characteristics in the heavy-ion operation mode, the description of the MultiPurpose Detector (MPD), and characteristics of the reactions of the colliding ions, which will allow us to detect the mixed phase formation. The plans and status of the project development are presented. (orig.)

Transmutation studies with GAMMA-2 setup using relativistic proton beams of the JINR Nuclotron

Czech Academy of Sciences Publication Activity Database

Adam, Jindřich; Balabekyan, AR.; Bradnova, V.; Brandt, R.; Golovatiouk, V. M.; Katovsky, K.; Krivopustov, M. I.; Kalinnikov, V. G.; Odoj, R.; Pronskikh, V. S.; Robotham, H.; Siemon, K.; Solnyshkin, A. A.; Stegailov, V. I.; Tsoupko-Sitnikov, V. M.; Vladimirova, NM.; Westmeier, W.

2006-01-01

Roč. 562, č. 2 (2006), s. 741-742 ISSN 0168-9002 R&D Projects: GA MŠk 1P04LA213 Institutional research plan: CEZ:AV0Z10480505 Keywords : spallation neutron source * transmutation * nuclear waste incineration Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders Impact factor: 1.185, year: 2006

Diphoton and dipion productions at the Nuclotron/NICA

Energy Technology Data Exchange (ETDEWEB)

Abraamyan, Kh.U. [VBLHEP JINR, Dubna, Moscow region (Russian Federation); International Center for Advanced Studies, YSU, Yerevan (Armenia); Anisimov, A.B.; Kozhin, M.A.; Reznikov, S.G. [VBLHEP JINR, Dubna, Moscow region (Russian Federation); Baznat, M.I.; Gudima, K.K. [Institute of Applied Physics, Kishinev (Moldova, Republic of); Kukulin, V.I. [Moscow State University, Institute of Nuclear Physics, Moscow (Russian Federation); Universitaet Tuebingen, Institut fuer Theoretische Physik, Tuebingen (Germany); Nazarenko, M.A. [Moscow State Institute of Radioengineering, Electronics and Automation, Moscow (Russian Federation); Sorin, A.S. [VBLHEP JINR, Dubna, Moscow region (Russian Federation); BLTP JINR, Dubna, Moscow region (Russian Federation)

2016-08-15

Along with π{sup 0} and η mesons, a resonance structure in the invariant-mass spectrum of two photons at M{sub γγ} = 360 ± 7 ± 9 MeV is observed in the reaction dC → γ+γ+X at momentum 2.75 GeV/c per nucleon. Estimates of its width and production cross section are Γ = 64 ± 18 MeV and σ{sub γγ} = 98 ± 24{sup +93}{sub -67} μb, respectively. The collected statistics amount to 2339 ± 340 events of 1.5 . 10{sup 6} triggered interactions of a total number ∝ 10{sup 12} of d+C interactions. This resonance structure is not observed in the γγ channel in ∝ 10{sup 11} p+C collisions at the beam momentum 5.5 GeV/c. The result obtained in the reaction d+C is confirmed by the second experiment carried out on the deuteron beam at momentum 3.83 GeV/c per nucleon with a copper target: M = 382 ± 13 MeV, Γ = 62 ± 37 MeV and σ = 273 ± 75 μb. Some results on the observation of the resonance in the invariant-mass spectra of two π{sup 0} mesons are presented: the data obtained in the d+C → γ+γ+X reaction is confirmed by the results for the d+C → π{sup 0} + π{sup 0} + X and p+C → π{sup 0} + π{sup 0} + X reactions; a preliminary estimate of the ratio Br(R → γγ)/Br(R → π{sup 0}π{sup 0}) is (1.8-3.7) . 10{sup -3}. Further studies of this resonance is assumed at the Nuclotron/NICA at higher setup acceptance, which will allow to elucidate the nature of this resonance by determination of the differential cross sections at different beam energies in the range 1-6 GeV/n and the mechanism of its formation. (orig.)

Production and study of therapeutic proton beams from modernized phasotron at the Laboratory of Nuclear Problems JINR

International Nuclear Information System (INIS)

Abazov, V.M.; Gustov, S.A.; Zorin, V.P.; Kutuzov, S.A.; Mirokhin, I.V.; Mitsyn, G.V.; Molokanov, A.G.; Savchenko, O.V.; Filimonov, A.V.

1986-01-01

The first results on shaping and transport of therapeutic proton beams of the JINR phasotron are presented. To provide the flat-topped depth-dose distributions with steep back slope, the method of shaping the beam with a necessary energy spectrum from a non-monoenergetic beam is used. Extension of the flat-top of the depth-dose distribution is 4.7 g/cm 2 for the 200 MeV beam energy

Status and prospects of new clinical methods of cancer diagnostics and treatment based on particle and ion beams available at JINR

International Nuclear Information System (INIS)

Savchenko, O.V.

1996-01-01

Brief history of radiation therapy is given. New radiation sources providing better distribution of the radiation doses in a patient's body are shown to increase the efficiency of the radiation therapy. Grounds for using heavy nuclear particles to treat malignant tumours and the first clinical tests of these particles at some physics research centres in different countries of the world are considered. A many-room complex of radiation treatment with JINR phasotron beams at the Laboratory of Nuclear Problems is described. The first results of treating cancer patients with proton beams in this complex are given. The prospects for radiation therapy and diagnosis with heavy nuclear beams from other basic facilities of JINR are presented. The necessity of building a radiological hospital and a regional treatment and diagnosis centre in Dubna is discussed, which will allow the fastest and most efficient application of new nuclear physics techniques and designs to medicine. 68 refs., 17 figs., 6 tabs

Research of the Mass Spectra of the Fission Products and Yields of (n, gamma) and (n, 2n) Reactions in a Model Subcritical Uranium Blanket of the Electronuclear System "Energy Plus Transmutation" on Proton Beam of the Dubna Synchrophasotron at 1.5 Ge

CERN Document Server

Chultem, D; Krivopustov, M I; Gerbish, S; Tumendemberel, B; Pavlyuk, A B; Zaveryukha, O S

2002-01-01

This paper is devoted to the research of the spatial distributions of the yields of (n, f), (n, gamma) and (n, 2n) reactions in a two-section model of the uranium blanket electronuclear installation constructed at the Laboratory of High Energies, JINR (Dubna) for experiments according to the program "Research of physical aspects of the electronuclear method of energy production and of radioactive waste transmutation in atomic power-engineering on beams of the synchrophasotron and nuclotron" - project "Energy plus Transmutation". The mass spectrum of the fission products and yields of above reactions in uranium activation detectors placed on the radii of the so-called detector plates is determined. The experimental results testify that the fission of nuclei in the uranium blanket is made by fast neutrons. This conclusion coincides with the result obtained with track integrators of uranium fission.

Preliminary results on neutron production from a Pb/U target irradiated by deuteron beam at 1.25 GeV/amu

International Nuclear Information System (INIS)

Fragopoulou, M.; Manolopoulou, M.; Jokic, S.; Zamani, M.; Krivopustov, M.; Sosnin, A.; Stoulos, S.

2008-01-01

A spallation neutron source consisted of a cylindrical Pb target and surrounded by uranium blanket was irradiated by deuteron beam 1.25 GeV/amu provided from the Nuclotron accelerator at High Energy Laboratory, JINR, Dubna. For radiation protection purpose a polyethylene shielding was placed around the spallation neutron source. Neutron distributions along the surface of the U-blanket were measured by using solid state nuclear track detectors (SSNTDs) as particle and fission detectors. The neutron distributions appear to be similar to those obtained by proton irradiations. Applying a fitting procedure to the experimental data the inelastic cross section of deuteron in Pb was estimated. The escaping neutron distribution from the polyethylene shielding and parallel to the target was also measured and presented to be two orders of magnitude less than that over the U-blanket surface

Proposal on the measurements of d-p elastic scattering analyzing powers at 0.3-2.0 GeV at internal target station of the Nuclotron

International Nuclear Information System (INIS)

Uesaka, T.; Ladygin, V.P.; Azhgirej, L.S.

2005-01-01

A new high-energy beam polarimeter is proposed for the Nuclotron using Internal Target Station. This polarimeter based on the measurement of the asymmetry for the d-p elastic scattering will allow one to measure both vector and tensor components of the deuteron beam polarization simultaneously. For that purpose the measurement of analyzing powers for the d-p elastic scattering at energies T d = 0.88-2 GeV is proposed. The precise measurements of the deuteron analyzing powers over energy range T d 300-2000 MeV can give an irreplaceable clue on the study of spin-dependence of three-nucleon forces

Recent development of radioanalytical method at IBR-2 pulsed fast reactor of the JINR

International Nuclear Information System (INIS)

Nazarov, V.M.; Pavlov, S.S.; Herrera, E.

1991-01-01

The experience of the use of radioanalytical methods, including NAA at IBR-2 pilsed fast reactor of the JINR, is discussed. Physical and technical parameters of the experimental installation designed for NAA and radiography are given. The detailed examples of the application of resonance neutrons to the control of the environment in the geology of oil, in multi-element analysis of food products and superpure materials as well as in nuclear physics are reviewed. The works on the application of the neutron isotopes sources for express determination of nitrogen content in original and synthetic materials are introduced. 7 refs.; 8 figs.; 3 tabs

Present status of FLNR (JINR) ECR ion sources

International Nuclear Information System (INIS)

Bogomolov, S.; Efremov, A.; Loginov, V.; Lebedev, A.; Yazvitsy, N.; Bekhterev, V.; Kostukhov, Y.; Gulbekian, G.; Gikal, B.; Drobin, V.; Seleznev, V.; Seleznev, V.

2012-01-01

Six ECR ion sources have been operated in the Flerov Laboratory of Nuclear Reactions (JINR). Two 14 GHz ECR ion sources (ECR4M and DECRIS-2) supply various ion species for the U400 and U400M cyclotrons correspondingly for experiments on the synthesis of heavy and exotic nuclei using ion beams of stable and radioactive isotopes. The 18 GHz DECRIS-SC ion source with superconducting magnet system produces ions from Ar up to W for solid state physics experiments and polymer membrane fabrication at the IC-100 cyclotron. The third 14 GHz ion source DECRIS-4 with 'flat' minimum of the axial magnetic field is used as a stand alone machine for test experiments and also for experiments on ion modification of materials. The other two compact ECR ion sources with all permanent magnet configuration have been developed for the production of single charged ions and are used at the DRIBs installation and at the MASHA mass-spectrometer. In this paper, present status of the ion sources, recent developments and plans for modernization are reported. The paper is followed by the slides of the presentation. (authors)

Radioanalytical investigations at FLNP JINR: State of the art

International Nuclear Information System (INIS)

Frontasyeva, M.

2006-01-01

In spite of competing non-nuclear analytical techniques (AAS, ICP-ES, ICP-MS, etc), reactor neutron activation analysis (NAA) continues to be the most powerful multi-element analytical technique used in geosciences, life sciences and material sciences. NAA, being a technique based on a physical principle different from those of other trace element techniques, should always be used, if feasible, when the need for better quantification of trace elements at ultra-low levels is desirable. In the certification of reference material, NAA as an accurate technique has played and is still playing a key role, even for elements where other techniques have replaced NAA in practical work. The radioanalytical complex REGATA at the IBR-2 reactor for more than 20 years of operation has become a source of analytical data for a considerable number of international projects carried out by specialists from the JINR member- and non-member states. Experience in applying conventional and epithermal neutron activation analysis for some challenging areas of studying the environment is reviewed. Special emphasis is made on collaborative projects with Turkish scientists

Production of highly charged ion beams Kr32+, Xe44+, Au54+ with Electron String Ion Source (ESIS) Krion-2 and corresponding basic and applied studies

Science.gov (United States)

Donets, D. E.; Donets, E. D.; Donets, E. E.; Salnikov, V. V.; Shutov, V. B.

2010-09-01

Electron String Ion Source (ESIS) Krion-2 (JINR, Dubna) was used for basic and applied research in various aspects of multiply charged heavy ions production. Energy recuperation mode in ESIS has been proofed first and used for production of highly charged ions 84Kr28+÷84Kr32+, 124Xe40÷124Xe44 and Au51+÷ Au54+. Krion-2 ESIS was mounted on high voltage (HV) platform of LU-20 Linac and used as an injector of highly charged ions during Nuclotron run N° 41. Krion-2 ESIS has produced 3.0.107 124Xe42+ ions per pulse of 7 μs duration. This ion beam was injected into LU-20 and Nuclotron, accelerated up to energy of 186 GeV and the extracted Xe beam was used for physics experiments. Electron String Ion Source Krion-2 demonstrated the high reliability and stability running during 30 days on HV platform. We believe that it is due to an extremely low electron beam power, provided by using the electron string mode of operation: 50 W pulse power and about 10 W average power. Other possible application of ESIS could be its use in injection complexes of synchrotrons and cyclotrons for cancer therapy. Slow and fast extraction of C4+ and C6+ beams from Krion-2 ESIS were preliminary studied towards ESIS optimization for medical accelerators requirements.

Project of the JINR heavy ion synchrotron on-line control system

International Nuclear Information System (INIS)

Glejbman, Eh.M.; Zhabitskij, V.M.; Ivanov, I.N.

1983-01-01

Description of the project of the JINR heavy ion synchrotron (HIS) on-line control system (OCS) which is a strong-focusing synchrotron designed for avarage energies, is given. Complete average stream of data from HIS constitutes approximately 500 byte/s, when operation cycle is 0.33 s. The structure of HIS OCS is a two-hierarchy system with the distributed processing and control, built using modular principle. The first, lower hierarchy level forms eight subsystems, each of them is oriented for automation of concrete functionally-technological system of the accelerator. The higher hierarchy is the central complex computer which is a multimicroprocessor computer. The hardware of HIS OCS is envisaged to be realized on the base of CAMAC moduls. HIS OCS software will be disigned as the SM computer specialized real-time system supplemented with applied programs and language interpreter for the accelerator control

The Unified Database for BM@N experiment data handling

Science.gov (United States)

Gertsenberger, Konstantin; Rogachevsky, Oleg

2018-04-01

The article describes the developed Unified Database designed as a comprehensive relational data storage for the BM@N experiment at the Joint Institute for Nuclear Research in Dubna. The BM@N experiment, which is one of the main elements of the first stage of the NICA project, is a fixed target experiment at extracted Nuclotron beams of the Laboratory of High Energy Physics (LHEP JINR). The structure and purposes of the BM@N setup are briefly presented. The article considers the scheme of the Unified Database, its attributes and implemented features in detail. The use of the developed BM@N database provides correct multi-user access to actual information of the experiment for data processing. It stores information on the experiment runs, detectors and their geometries, different configuration, calibration and algorithm parameters used in offline data processing. An important part of any database - user interfaces are presented.

Perspectives and possibilities for solid state physcis investigations at thhe pulsed reactor IBR-2 of the JINR Dubna

International Nuclear Information System (INIS)

Feldmann, K.; Frauenheim, T.; Lauckner, J.; Weniger, J.; Muehle, E.

1982-02-01

Three time-of-flight spectrometers (spectrometer of high resolution NSWR, spectrometer of inverted geometry KDSOG and spectrometer of polarized neutrons SPN-1) are presented, which will be working at the pulsed IBR-2 reactor of the JINR Dubna. Considering the parameters and the special methods of measurement of these spectrometers, the possibilities of their applications for the investigations of structural, magnetic and electronic properties of solids by means of elastic, inelastic and quasielastic neutron scattering are discussed. (author)

File structure and organization in the automation system for operative account of equipment and materials in JINR

International Nuclear Information System (INIS)

Gulyaeva, N.D.; Markova, N.F.; Nikitina, V.I.; Tentyukova, G.N.

1975-01-01

The structure and organization of files in the information bank for the first variant of a JINR material and technical supply subsystem are described. Automated system of equipment operative stock-taking on the base of the SDS-6200 computer is developed. Information is stored on magnetic discs. The arrangement of each file depends on its purpose and structure of data. Access to the files can be arbitrary or consecutive. The files are divided into groups: primary document files, long-term reference, information on items that may change as a result of administrative decision [ru

Measuring and control of some parameters of the JINR synchrotron on line with the ES1010 computer

International Nuclear Information System (INIS)

Volkov, V.I.; Kulikov, I.I.; Romanov, S.V.; Tsarenkov, A.P.

1983-01-01

JINR synchrophasotron operates in a wide range of beam intensities. The increase in variety of accelerated nuclei resulted in the necessity to measure low intensity nuclear beam using traditional method of signal electrodes. To solve the task apparatus of a high sensitivity and low level of intrinsic and rf noise for beam intensity measurement has been developed and manufactured. In the apparatus signal electrodes with a double electrostatic screening are used. The application of the considered apparatus and software in the synchrophasotron permitted to decrease the accelerator adjustment time and also to improve the quality of physical experiments

Some conceptions of developing the multidimensional measuring systems for JINR physical installation; Nekotorye kontseptsii razvitiya mnogomernykh izmeritel`nykh sistem na fizicheskikh ustanovkakh LNF OIYaI

Energy Technology Data Exchange (ETDEWEB)

Tishin, V G

1996-12-31

Paper discusses the main trends of development of multidimensional measuring systems to automate JINR nuclear-and-physical experiments. Paper describes measuring system for correlation measurements, spectrometric system for multi parametric measurements conducted using ROMASHKA facility and measuring system to conduct experiments in the field of nuclear physics. 7 refs.; 2 figs.

Automation of registration of sample weights for high-volume neutron activation analysis at the IBR-2 reactor of FLNP, JINR

International Nuclear Information System (INIS)

Dmitriev, A.Yu.; Dmitriev, F.A.

2015-01-01

The 'Weight' software tool was created at FLNP JINR to automate the reading of analytical balance readouts and saving these values in the NAA database. The analytical balance connected to the personal computer is used to measure weight values. The 'Weight' software tool controls the reading of weight values and the exchange of information with the NAA database. The weighing process of a large amount of samples is reliably provided during high-volume neutron activation analysis. [ru

Calculation of beam injection and modes of acceleration for the JINR phasotron

International Nuclear Information System (INIS)

Vorozhtsov, S.B.; Dmitrievsky, V.P.

1981-01-01

On the basis of computer simulation of particles motion from the injection region up to the final radius of the accelerated proton beam behaviour together with different modes of the JINR high current synchrocyclotron operation is investigated. The THOUR modified computer code is used for calculations. The calculations have been performed with allowance for particle radial-phase motion and particle axial motion and although with beam collective effects. Beam dynamics during first turns of particles has been considered by integrating equations of motion. Tolerances for magnetic field structure in the region of first phase oscillation are obtained. Verifications of time dependences of accelerated voltage amplitude are performed. Time dependences of beam intensity (with and without account for space charge effect) and of mean magnetic field disturbance and the dependence of the separatrice dimension on the orbit radius of the accelerated beam are given. The conclusion is drawn on the correctness of the earlier appreciation of beam intensity equaling 40-45 mkA

Test bench for measurements of NOvA scintillator properties at JINR

Science.gov (United States)

Velikanova, D. S.; Antoshkin, A. I.; Anfimov, N. V.; Samoylov, O. B.

2018-04-01

The NOvA experiment was built to study oscillation parameters, mass hierarchy, CP- violation phase in the lepton sector and θ23 octant, via vɛ appearance and vμ disappearance modes in both neutrino and antineutrino beams. These scientific goals require good knowledge about NOvA scintillator basic properties. The new test bench was constructed and upgraded at JINR. The main goal of this bench is to measure scintillator properties (for solid and liquid scintillators), namely α/β discrimination and Birk's coefficients for protons and other hadrons (quenching factors). This knowledge will be crucial for recovering the energy of the hadronic part of neutrino interactions with scintillator nuclei. α/β discrimination was performed on the first version of the bench for LAB-based and NOvA scintillators. It was performed again on the upgraded version of the bench with higher statistic and precision level. Preliminary result of quenching factors for protons was obtained. A technical description of both versions of the bench and current results of the measurements and analysis are presented in this work.

180 MW/180 KW pulse modulator for S-band klystron of LUE-200 linac of IREN installation of JINR

Science.gov (United States)

Su, Kim Dong; Sumbaev, A. P.; Shvetsov, V. N.

2014-09-01

The offer on working out of the pulse modulator with 180 MW pulse power and 180 kW average power for pulse S-band klystrons of LUE-200 linac of IREN installation at the Laboratory of neutron physics (FLNP) at JINR is formulated. Main requirements, key parameters and element base of the modulator are presented. The variant of the basic scheme on the basis of 14 (or 11) stage 2 parallel PFN with the thyratron switchboard (TGI2-10K/50) and six parallel high voltage power supplies (CCPS Power Supply) is considered.

Total cross section measurements for νμ, ν-barμ interactions in 3 - 30 GeV energy range with IHEP - JINR neutrino detector

International Nuclear Information System (INIS)

Anikeev, V.B.; Belikov, S.V.; Borisov, A.A.

1995-01-01

The results of total cross section measurements for the ν μ , ν-bar μ interactions with isoscalar target in the 3 - 30 GeV energy range have been presented. The data were obtained with the IHEP - JINR Neutrino Detector in the 'natural' neutrino beams of the U - 70 accelerator. The significant deviation from the linear dependence for σ tot versus neutrino energy is determined in the energy range less than 15 GeV. 46 refs., 10 figs., 5 tabs

Educational program on HPC technologies based on the heterogeneous cluster HybriLIT (LIT JINR

Directory of Open Access Journals (Sweden)

Vladimir V. Korenkov

2017-12-01

Full Text Available The article highlights the issues of training personnel for work with high-performance computing systems (HPC, as well as of support of the software and information environment which is necessary for the efficient use of heterogeneous computing resources and the development of parallel and hybrid applications. The heterogeneous computing cluster HybriLIT, which is one of the components of the Multifunctional Information and Computing Complex of JINR, is used as the main platform for training and re-training specialists, as well as for training students, graduate students and young scientists. The HybriLIT cluster is a dynamic, actively developing structure, incorporating the most advanced HPC computing architectures (graphics accelerators, Intel Xeon Phi coprocessors, and also it has a developed software and information environment, which in turn, makes it possible to build educational programs on the up-to-date level, and enables the learners to master both modern computing platforms and modern IT technologies.

Calculation of channels for forming and transport of medical proton beams at the JINR phasotron

International Nuclear Information System (INIS)

Kuz'min, E.S.; Mirokhin, I.V.; Molokanov, A.G.; Obukhov, Yu.L.; Savchenko, O.V.

1984-01-01

Results of numerical simulation of shaping and transporting processes of therapeutic proton beams with a modified Bragg curve at the JINR phasotron are presented. The mean energy of proton beams are about 100, 130 and 200 MeV. To provide the flat-topped depth-dose distributions with a steep back slope, the method of shaping with a necessary energy spectrum from a nonmonoenergetic beam is used. It is shown by the calculations that it is possible to choose such modes of the channel operation at which clinical-physical requirements to the parameters of medical proton beams are satisfied. Extensions of flat-tops of dose peaks are 1.3 g/cm 2 , 1.7 g/cm 2 and 3.5 g/cm 2 for the 100 MeV, 130 MeV and 200 MeV beam energies, respectively. Dose rate in the peaks of modified distributions are not less than 100 rad per minute

Description and Methods of the Automated Document Management System Usage in Scientific Organizational Activities of the Joint Institute for Nuclear Research (ADS SOA JINR)

CERN Document Server

Borisovsky, V F; Kekelidze, M G; Nikonov, E G; Senchenko, V A

2005-01-01

This paper presents the structure description and user guide for Information program system for automation of a document flow for support of scientific arrangement planning (ADS SOA) which can be used for planning and carrying out seminars, workshops, conferences and other arrangements of research management. This work is intended for automation of scientific research management in the Joint Institute for Nuclear Research. The complex of programs represents the CDS Agenda system used in the European Organization for Nuclear Research (CERN), which is adapted to the conditions of JINR.

Investigation of time-of-flight lifetime measurement methods of charged π mesons at the Phasotron of JINR

International Nuclear Information System (INIS)

Evtukhovich, P.G.; Kallies, W.; Kononenko, G.A.; Samojlov, V.N.; Sapogov, A.S.

2003-01-01

The methods of time-of-flight lifetime measurement of charged π mesons that have been realized at the Phasotron of the Laboratory of Nuclear Problems (LNP) of JINR are described. The distinguishing feature of the given methods consists in the use of the following technique: 1) time-of-flight investigation of particle beam composition for relatively long flight path (base); 2) an optimal choice (for the given base) of beam geometry under investigation; 3) monitoring of π-meson momentum along the whole explored trajectory; 4) the use of high resolution scintillation detectors. This technique together with correct mathematical calculations provided a possibility of controlling the influence of main systematic factors on the precision of the data obtained. These methods allow one to compute an amount of sampling that requisites a given precision based on preliminary evaluations of random and systematic errors of charged π-mesons measured lifetime

DUBNA: Spin effects

International Nuclear Information System (INIS)

Anon.

1995-01-01

Full text: Earlier this year, a collaboration of Russian, Ukrainian and French laboratories measured the difference between the polarized neutron and proton total reaction rate (total cross section difference) at slightly higher energies than previous experiments, providing an interesting hint of an effect predicted by theory. This was measured using a beam of longitudinally polarized neutrons and a longitudinally polarized proton target with parallel and antiparallel polarization directions. The polarized neutron beam, from the break-up of polarized deuterons, was accelerated by the Synchrophasotron at the Joint Institute for Nuclear Research (JINR) Laboratory of High Energies, Dubna (Russian Federation). The polarized target, 20 cm long and 3 cm in diameter, provided by DAPNIA (Saclay, France) and Argonne (USA), had also been used in 1989-1990 at Fermilab for the E704 experiment. Equipment from Saclay and Argonne was shipped to Dubna and work started in June 1994. The International Association for the Promotion of Cooperation with Scientists from the Independent States of the Former Soviet Union (INTAS) supported the construction and improvement of the target in a suitable transportable form. The target was mounted in the JINR Laboratory of Nuclear Problems (LNP) by experts from DAPNIA (Saclay), JINR Dubna (LNP, LHE and Laboratory of Particle Physics - LPP), Gatchina (Russia), RASMoscow and the Kharkov (Ukraine) laboratories. The Saturne National Laboratory (Saclay), helped with computer programmes for the NMR target polarization measurements. Apparatus was tested in early February. The beam of 2 x 109 polarized deuterons produced 106 polarized neutrons at 3.6 GeV. The neutron beam polarization was about 52%. The new superconducting Nuclotron accelerator should allow the beam intensity to be increased and beam quality improved after an upgrade of the injection system. Preliminary results for the polarized neutron-proton cross section difference at neutron kinetic

A history of the collaboration between the European Organisation for Nuclear Research (CERN) and the Joint Institute for Nuclear Research (JINR), and with Soviet research institutes in the USSR 1955-1970

International Nuclear Information System (INIS)

Lock, W.O.

1975-01-01

The report describes in some detail the origins and development up to 1970 of the collaboration which now exists between the European Organization for Nuclear Research (CERN) and its counterpart the Joint Institute for Nuclear Research (JINR) at Dubna, USSR and also with the Institute for High Energy Physics, Serpukhov, USSR. Part 1 deals with the relations between JINR and CERN, their beginnings and the subsequent development of exchange of scientists, joint Summer Schools, and the organization of Seminars to discuss perspectives in high energy physics. Part 2 describes first the steps which led up to the signing of an Agreement between CERN and the State Committee of the USSR for the Utilization of Atomic Energy, governing collaboration between CERN and the Institute for High Energy Physics at Serpukhov. A brief account is then given of the subsequent installation of equipment built at CERN for the Institute's 76-Gev proton accelerator and the carrying out of joint physics experiments by teams from Western Europe and from the Soviet Union. Part 3 summarizes the origins of collaborative agreements which have been made by CERN with a few other leading Institutes in the Soviet Union. A number of Annexes reproduce some of the relevant documents and letters. (author)

Two-processor automatized system to control fast measurements of the magnetic field index of the JINR 10 GeV proton synchrotron

International Nuclear Information System (INIS)

Chernykh, E.V.

1981-01-01

A two-processor system comprizing a hard-wired module and ES-1010 computer to control measurements of the magnetic field index of the JINR 10 GeV proton synchrotron is described. The system comprises the control module, a computer interface and a parallel branch driver residing in CAMAC system crate. The control module controls analogue multiplexer and analogue-to-digital converter through their front panels and writes down the information into a buffer memory module through the CAMAC highway. The computer controls the system, reads the information into core memory, writes down it on a magnetic tape, processes it and outputs n=f(r) plots on TV monitor and printer. The system provides the measurement up to 100 points during a magnetic field rise and minimal time of measurement 50 μs [ru

Event simulation based on three-fluid hydrodynamics for collisions at energies available at the Dubna Nuclotron-based Ion Collider Facility and at the Facility for Antiproton and Ion Research in Darmstadt

Science.gov (United States)

Batyuk, P.; Blaschke, D.; Bleicher, M.; Ivanov, Yu. B.; Karpenko, Iu.; Merts, S.; Nahrgang, M.; Petersen, H.; Rogachevsky, O.

2016-10-01

We present an event generator based on the three-fluid hydrodynamics approach for the early stage of the collision, followed by a particlization at the hydrodynamic decoupling surface to join to a microscopic transport model, ultrarelativistic quantum molecular dynamics, to account for hadronic final-state interactions. We present first results for nuclear collisions of the Facility for Antiproton and Ion Research-Nuclotron-based Ion Collider Facility energy scan program (Au+Au collisions, √{sN N}=4 -11 GeV ). We address the directed flow of protons and pions as well as the proton rapidity distribution for two model equations of state, one with a first-order phase transition and the other with a crossover-type softening at high densities. The new simulation program has the unique feature that it can describe a hadron-to-quark matter transition which proceeds in the baryon stopping regime that is not accessible to previous simulation programs designed for higher energies.

Design and study of new cables for superconducting accelerator magnets: Synchrotron SIS 100 at GSI and NICA collider at JINR*

International Nuclear Information System (INIS)

Khodzhibagiyan, H G; Drobin, V M; Kovalenko, A D; Vladimirova, N M; Fischer, E; Pantsyrny, V I; Potanina, L V; Shikov, A K

2010-01-01

Recent data from the design of new optimized options of NbTi composite wires and hollow cables for fast cycling synchrotron SIS100 at GSI and NICA collider at JINR are presented. The SIS100 new cable is proposed to be used for manufacturing of single-layer coil for dipole magnet with maximal amplitude of pulsed magnetic field up to 2 T. The cable should provide continues pulsed operation at the current amplitude of I = 13 kA and magnetic field ramp rate of dB/dt = 4 T/s. The results of experimental study of energy losses in the new wire and cable samples for SIS100 magnets are presented. The design cable parameters for the NICA 4 T dipole magnet are fixed at the level of I = 17 kA and dB/dt = 1 T/s. The status of the work is presented and discussed.

Spatial distribution of neutrons in paraffin moderator surrounding a lead target irradiated with protons at intermediate energies

International Nuclear Information System (INIS)

Adam, J.; Barabanov, M.Yu.; Bradnova, V.

2002-01-01

The distribution of neutrons emitted during the irradiation with 0.65, 1.0 and 1.5 GeV protons from a lead target (O / = 8 cm, l = 20 cm) and moderated by a surrounding paraffin moderator of 6 cm thick was studied with a radiochemical sensor along the beam axis on top of the moderator. Small 139 La-sensors of approximately 1 g were used to measure essentially the thermal neutron fluence at different depths near the surface: i.e., on top of the moderator, in 10 mm deep holes and in 20 mm deep holes. The reaction 139 La(n, γ) 140 La (τ 1/2 = 40.27 h) was studied using standard procedures of gamma spectroscopy and data analysis. The neutron induced activity of 140 La increases strongly with the depth of the hole inside the moderator, its activity distribution along the beam direction on top of the moderator has its maximum about 10 cm downstream the entrance of the protons into the lead and the induced activity increases about linearity with the proton energy. Some comparisons of the experimental results with model estimations based on the LAHET code are also presented. The experiments were carried out using the Nuclotron accelerator of the Laboratory of High Energies (JINR)

Transmutation of uranium and thorium in the particle field of the Quinta sub-critical assembly

Science.gov (United States)

Hashemi-Nezhad, S. R.; Asquith, N. L.; Voronko, V. A.; Sotnikov, V. V.; Zhadan, Alina; Zhuk, I. V.; Potapenko, A.; Husak, Krystsina; Chilap, V.; Adam, J.; Baldin, A.; Berlev, A.; Furman, W.; Kadykov, M.; Khushvaktov, J.; Kudashkin, I.; Mar'in, I.; Paraipan, M.; Pronskih, V.; Solnyshkin, A.; Tyutyunnikov, S.

2018-03-01

The fission rates of natural uranium and thorium were measured in the particle field of Quinta, a 512 kg natural uranium target-blanket sub-critical assembly. The Quinta assembly was irradiated with deuterons of energy 4 GeV from the Nuclotron accelerator of the Joint Institute for Nuclear Research (JINR), Dubna, Russia. Fission rates of uranium and thorium were measured using Gamma spectroscopy and fission track techniques. The production rate of 239Np was also measured. The obtained experimental results were compared with Monte Carlo predictions using the MCNPX 2.7 code employing the physics and fission-evaporation models of INCL4-ABLA, CEM03.03 and LAQGSM03.03. Some of the neutronic characteristics of the Quinta are compared with the "Energy plus Transmutation (EpT)" subcritical assembly, which is composed of a lead target and natU blanket. This comparison clearly demonstrates the importance of target material, neutron moderator and reflector types on the performance of a spallation neutron driven subcritical system. As the dimensions of the Quinta are very close to those of an optimal multi-rod-uranium target, the experimental and Monte Carlo calculation results presented in this paper provide insights on the particle field within a uranium target as well as in Accelerator Driven Systems in general.

Qualitative and quantitative analysis of arsenic and mercury in human remains of the XVI-XVII centuries from the Moscow Kremlin necropolises by neutron activation analysis at the IREN facility and the IBR-2 reactor of FLNP, JINR

International Nuclear Information System (INIS)

Panova, T.D.; Dmitriev, A.Yu.; Borzakov, S.B.; Khramko, K.

2017-01-01

The neutron activation analysis (NAA) of three samples of human remains of the XVI-XVII centuries from the necropolises of the Moscow Kremlin has been carried out at FLNP JINR. The samples were irradiated at two facilities: at the IREN source of resonance neutrons and at the IBR-2 reactor. Spectra of induced activity of the irradiated samples were measured by using the automatic measurement system developed at FLNP JINR. This system consists of a high-purity germanium detector with spectrometric electronics, a sample changer, and a control software. Mass fractions of arsenic, mercury and other elements were calculated by relative and absolute NAA methods. The obtained values confirmed the fact of an acute mercury poisoning of the first wife of Tsar Ivan Vasilievich the Terrible - Tsarina Anastasia Romanovna. Increased mercury content was detected in the bone remains of the son of Tsar Ivan the Terrible, Tsarevich Ivan Ivanovich, and Prince M. V. Skopin-Shuisky. The obtained results allow us to introduce into scientific circulation the exact values of mass fraction of mercury, arsenic and some other elements in the samples from the graves of Russian historical figures of the second half of XVI - early XVII centuries. [ru

Articles in this issue, v.1

CERN Document Server

Joint Institute for Nuclear Research. Dubna

1999-01-01

Content:At the Laboratories of JINR. A New Element Synthesized. NA48 Experiments: First Results. Stress Investigations by Neutron Fourier Diffractometry Method (by G.D.Bokuchava). Session of the JINR Scientific Council. Prizes. JINR Prizes for 1998. B.Pontecorvo Prize. Meetings of the JINR PACs. Scientific Cooperation. JINR Directorate's Information. P.L.Kapitsa Medal. Visits. Meeting with the Chairman of the State Duma. Russia's New Plenipotentiary to JINR. Jubilees. I.M.Frank Memorial Events. N.A.Chernikov's Jubilee. At JINR's UC. In Memory of a Colleague. Soloviev Vadim Georgievich. Nominations. New Publications. Schedule of JINR Meetings.

BM@N and MPD experiments at NICA

Directory of Open Access Journals (Sweden)

Kekelidze Vladimir

2018-01-01

Full Text Available The project NICA (Nuclotron-based Ion Collider fAcility aims to study hot and baryon rich QCD matter in heavy ion collisions in the energy range SNN = 4 − 11 GeV. The rich heavy-ion physics program will be performed at two experiments, BM@N (Baryonic Matter at Nuclotron at beams extracted from the Nuclotron, and at MPD (Multi-Purpose Detector at the NICA collider. This program covers a variety of phenomena in strongly interacting matter of the highest baryonic density, which includes study of collective effects, production of hyperon and hypernuclei, in-medium modification of meson properties, and event-by-event fluctuations.

Analysis of arsenic and mercury content in human remains of the 16th and 17th centuries from Moscow Kremlin necropolises by neutron activation analysis at the IREN facility and the IBR-2 reactor FLNP JINR

Science.gov (United States)

Panova, T. D.; Dmitriev, A. Yu.; Borzakov, S. B.; Hramco, C.

2018-01-01

A neutron activation analysis (NAA) of three samples of human remains of the 16th and 17th centuries from the necropolises of the Moscow Kremlin has been carried out at FLNP JINR. The samples were irradiated at two facilities: the IREN source of resonance neutrons and the IBR-2 reactor. Spectra of the induced activity of the irradiated samples were measured by using the automatic measurement system developed at the Frank Laboratory of Neutron Physics (FLNP) of the Joint Institute for Nuclear Research (JINR). This system consists of a high-purity germanium detector with spectrometric electronics, a sample changer, and control software. Mass fraction of arsenic, mercury, and some other elements were calculated using two NAA methods—relative and absolute. The obtained values confirm the fact of acute mercury poisoning of Anastasia Romanovna, the first wife of Tsar Ivan Vasil'evich the Terrible, the first Russian Tsarina (died in 1560). High levels of mercury were detected in the bone remains of Tsarevich Ivan Ivanovich (died in 1581), the son of Tsar Ivan the Terrible, and Prince Mikhail Vasil'evich Skopin-Shuiskii (died in 1610). The results provide an opportunity to introduce into scientific circulation the exact values of mass fraction of mercury, arsenic, and other elements in the samples taken from the burials of the Russian historical figures of the second half of 16th-early 17th century.

Excitation of 107m,109m Ag isomeric states in the fast neutron inelastic scattering at the Ibr-2 reactor of JINR

International Nuclear Information System (INIS)

Alpatov, V.G.; Davydov, A.V.; Isaev, Yu.N.

1997-01-01

The excitation cross sections of long-living isomers of 107m,109m Ag nuclei were measured for the fast neutron inelastic scattering reactions at the Ibr-2 reactor of JINR (Dubna) by means of a comparison with the yield of the 103m Rh isomer. The excitation cross sections of the latter are known for analogous reactions in the wide energy range. The measured cross sections are the following: σ( 107m Ag) 204 ± 18 mb, σ( 109m Ag) = 262 ± 26 mb. These values are essentially lower than the excitation cross section of the 103m Rh isomer. The analysis of the data on level structures and transitions between these levels for rhodium and silver nuclei together with the data on γ-spectra created in the reactions (n, n ' γ) shows that the essential difference between excitation cross sections of Rh and Ag isomers can be explained by different populations of corresponding levels

Strange quark matter in the Universe and accelerator nuclear beams

International Nuclear Information System (INIS)

Okonov, Eh.

1995-01-01

An almost symmetric mixture of u, d and s-quarks - Strange Quark Matter (SQM) is strongly argued to be the ground and absolutely stable of the matter. Astrophysical objects, supposed to be the SQM states, could be formed as the result of the Big Bang (in the early Universe) and the conversion of neutron stars into strange ones. Such objects are considered to be favourable candidates as black holes. The unique possibility to produce the SQM under terrestrial conditions (at accelerator laboratories) are violent relativistic nucleus-nucleus collisions so called 'little big bang'. The expected singulares of SQM are reviewed which could be revealed from astrophysical observations of peculiarities of large SQM objects as well as from accelerator experiments with searching smaller SQM states including the simplest one - metastable six-quark H dihyperon. The first results of the Dubna search experiments, with considerable heating of matter and formation a dense strangeness abundant fireball (mixed phase?) in central nuclear collisions, is presented. Under these favourable conditions a candidate for H dihyperon is observed and an upper limit of production cross sections of this SQM state is estimated. Some prospects and advantages of further searches for light SQM states, using the JINR new superconducting accelerator - Nuclotron with energy 5-6 GeV per nucleon, are briefly outlined. 19 refs., 7 figs

Rapid cycling superconducting booster synchrotron

International Nuclear Information System (INIS)

Dinev, D.; Agapov, N.; Butenko, A.

2001-01-01

The existing set of Nuclotron heavy ion sources, such as duoplasmatron, polarized deuteron, laser and electron beam ion sources permits to have ion beams over a wide range of masses. The main problem for us now is to gain high intensity of accelerator particles. It can be solved by means of multiturn injection of the low current beams into the booster, acceleration up to the intermediate energies, stripping and transferring into the main ring. A design study of this accelerator - the 250 MeV/Amu Nuclotron booster synchrotron at 1 Hz repetition rate and circumference of 84 m, has been completed. The lattice dipole and quadrupole magnets have an iron yoke coils, made of hollow superconductor, are cooled by two-phase Helium flow, as well as the Nuclotron magnets. (authors)

Excitation of 107m,109mAg isomeric states in the inelastic scattering of fast neutrons from the IBR-2 reactor of JINR

International Nuclear Information System (INIS)

Alpatov, V. G.; Borzakov, S. B.; Davydov, A. V.; Isaev, Yu. N.; Kartashov, G. R.; Korotkov, M. M.; Nazarov, V. M.; Pavlov, S. S.; Peresedov, V. F.; Rad'ko, V. E.; Samoylov, V. M.; Chinaeva, V. P.

1997-01-01

The cross sections for the excitation of long-lived isomers of 107,109 Ag nuclei are measured in the inelastic scattering of fast neutrons from the IBR-2 reactor of JINR (Dubna). The measurements are performed by means of comparison with the yield of the 103m Rh isomer, for which the excitation cross sections are known over a wide energy range for similar reactions induced by monochromatic neutrons. The measured cross sections proved to be σ( 107m Ag)=204±18 mb and σ( 109m Ag)=262±26 mb. These values are significantly smaller than the cross section for the excitation of the 103m Rh isomer. An analysis employing information about the arrangement of energy levels in Rh and Ag and about transitions between these levels, as well as data on the spectra of γ rays emitted in (n,n'γ) reactions, reveals that the distinction between the cross sections for the excitation of Rh and Ag isomers can be explained by the difference in the population of corresponding levels of Rh and Ag nuclei

Dubna - A University Town Exhibition Science Bringing Nations Together

CERN Multimedia

1977-01-01

On the initiative of the JINR Directorate, which was supported by the Academy of Natural Sciences of Russia, the International University of Nature, Society and Man, was set up in 1991. Then, the JINR University Centre was established, where senior students of the leading Russian Physics institutes finish their education under the supervision of JINR scientists and attend practical studies in the JINR Laboratories. This new JINR development concept envisages a gradual conversion to an international centre which will integrate fundamental science, technological studies and education.

Dubna - A University Town Exhibition Science Bringing Nations Together

CERN Multimedia

1999-01-01

On the initiative of the JINR Directorate, which was supported by the Academy of Natural Sciences of Russia, the International University of Nature, Society and Man, was set up in 1991. Then, the JINR University Centre was established, where senior students of the leading Russian Physics institutes finish their education under the supervision of JINR scientists and attend practical studies in the JINR Laboratories. This new JINR development concept envisages a gradual conversion to an international centre which will integrate fundamental science, technological studies and education.

Joint Institute for Nuclear Research as an example of socialist integration in science

International Nuclear Information System (INIS)

Bogolyubov, N.N.

1979-01-01

History of establishing, main directions of works and some results of investigations which have been carried out in the Joint Institute of Nuclear Research according to the program of the JINR member-states are stated as well as directions of the JINR co-operation with other countries are given. In detail, main works are stated in the field of high energy physics, theoretical nuclear physics, investigation of interactions of elementary particles, nuclear spectroscopy of nuclides. Examples are given of joint researches which have been conducted by scientists from the JINR together with scientists from other scientific research centers of the JINR member-states and other countries. Content is stated of works in the field of synthesis of ultraheavy elements and development of methods of study as their chemical properties. Composition of the JINR computer center is given as well as the list of problems which are solved at this center. Some results are given of works conducted in the JINR in the field of development of equipment for nuclear-physical researches and improvement of accelerators. Some results are presented of the JINR activity and plans for future [ru

Cross-sections of residual nuclei from deuteron irradiation of thin thorium target at energy 7 GeV

Directory of Open Access Journals (Sweden)

Vespalec Radek

2017-01-01

Full Text Available The residual nuclei yields are of great importance for the estimation of basic radiation-technology characteristics (like a total target activity, production of long-lived nuclides etc. of accelerator driven systems planned for transmutation of spent nuclear fuel and for a design of radioisotopes production facilities. Experimental data are also essential for validation of nuclear codes describing various stages of a spallation reaction. Therefore, the main aim of this work is to add new experimental data in energy region of relativistic deuterons, as similar data are missing in nuclear databases. The sample made of thin natural thorium foil was irradiated at JINR Nuclotron accelerator with a deuteron beam of the total kinetic energy 7 GeV. Integral number of deuterons was determined with the use of aluminum activation detectors. Products of deuteron induced spallation reaction were qualified and quantified by means of gamma-ray spectroscopy method. Several important spectroscopic corrections were applied to obtain results of high accuracy. Experimental cumulative and independent cross-sections were determined for more than 80 isotopes including meta-stable isomers. The total uncertainty of results rarely exceeded 9%. Experimental results were compared with MCNP6.1 Monte-Carlo code predictions. Generally, experimental and calculated cross-sections are in a reasonably good agreement, with the exception of a few light isotopes in a fragmentation region, where the calculations are highly under-estimated. Measured data will be useful for future development of high-energy nuclear codes. After completion, final data will be added into the EXFOR database.

The Ties That Bind Exhibition Science Bringing Nations Together

CERN Document Server

1997-01-01

Scientific ties between JINR and CERN date back to 1957, when JINR Vice-Director Marian Danysz, a Polish professor, visited CERN and agreed with CERN Director-General C.J. Bakker on the exchange of scientists and on joint experiments. Since that time to progress and now JINR takes an active part in the Large Hadron Collider, LHC, project at CERN.

Brief review of topmost scientific results obtained in 2015 at the Joint Institute for Nuclear Research

International Nuclear Information System (INIS)

Sabaeva, E.V.; Krupko, E.I.

2016-01-01

This brief review presents the topmost scientific results obtained in 2015 at the Joint Institute for Nuclear Research in such fields as theoretical and experimental physics, radiation and radiobiological research, accelerators, information technology and computer physics. It also provides information about the publications by JINR staff members, awards given to JINR scientists, and activities carried out at the JINR University Centre in 2015. [ru

Brief review of topmost scientific results obtained in 2013 at the Joint Institute for Nuclear Research

International Nuclear Information System (INIS)

Sabaeva, E.V.; Kravchenko, E.I.

2014-01-01

This brief review presents the topmost scientific results obtained in 2013 at the Joint Institute for Nuclear Research in such areas as theoretical physics, experimental physics, radiation and radiobiological research, accelerators, information technology and computer physics. It also provides information on the number of publications by JINR staff members, awards given to JINR scientists, and activities carried out at the JINR University Centre in 2013.

Brief review of topmost scientific results obtained in 2014 at the Joint Institute for Nuclear Research

International Nuclear Information System (INIS)

Bulatova, V.V.; Sabaeva, E.V.

2015-01-01

This brief review presents the topmost scientific results obtained in 2014 at the Joint Institute for Nuclear Research in such fields as theoretical and experimental physics, radiation and radiobiological research, accelerators, information technology and computer physics. It also provides information about the publications by JINR staff members, patents for inventions, awards given to JINR scientists, and activities carried out at the JINR University Centre in 2014. [ru

The Ties That Bind Exhibition Science Bringing Nations Together

CERN Document Server

2000-01-01

Scientific ties between JINR and CERN date back to 1957, when JINR Vice-Director Marian Danysz, a Polish professor, visited CERN and agreed with CERN Director-General C.J. Bakker on the exchange of scientists and on joint experiments. Political confrontation did not affect extensive contacts between scientists. By the early 1970s, the meetings of the heads of two international centres, JINR and CERN, had become regular occurrences.

40 years of neutron physics in Dubna

International Nuclear Information System (INIS)

Aksenov, V.L.

2000-01-01

This publication is based on the report presented by the author at the jubilee meeting of the 88th session of the Scientific Council of the Joint Institute for Nuclear Research (JINR) on June 8, 2000 devoted to the 40th anniversary of neutron investigations in Dubna. JINR is one of the world leading scientific centers in the use of neutrons for the investigation of fundamental interactions and symmetries, the structure of atomic nuclei, and the condensed state of matter. Scientists from 30 countries conduct experiments at the JINR neutron sources

Alexei Norairovich Sissakian (1944-2010)

CERN Multimedia

2010-01-01

The Directorate of the Joint Institute for Nuclear Research (JINR, Dubna) deeply regrets to announce that Academician Alexei Norairovich Sissakian, the Director of JINR, a member of the Presidium of the Russian Academy of Sciences, a distinguished theoretical physicist and organizer of scientific research based on broad international cooperation, passed away on 1 May 2010 in his 66th year of life. Alexei Norairovich Sissakian was born on 14 October 1944 in Moscow. In 1968 he graduated from the Physics Faculty of the M. Lomonosov Moscow State University and started work at the JINR Laboratory of Theoretical Physics under the guidance of Academician N.N. Bogoliubov. The main scientific activities of A.N. Sissakian concerned elementary particle physics, approximation methods and equations of quantum field theory with nontrivial geometry, symmetry and topology, and the physics of strong interactions at high temperatures and densities. He initiated and headed the largest project of JINR towards the constructi...

Main trends of cooperation of physicists in socialist countries

International Nuclear Information System (INIS)

Biryukov, V.

1978-01-01

The work of JINR at Dubna, the first international scientific centre of socialist countries, is focused on studies in theoretical physics, high energy physics, nuclear physics, and low energy physics. Results are described obtained so far in the above fields as well as computer technology and data processing. JINR is also a centre for accelerator technology work. The U-300 three-meter cyclotron and the U-200 two-meter isochronous cyclotron were installed and the U-400 four-meter cyclotron is being built. The experience of JINR shows that the institute has become an educational facility for scientists and specialists from the participating countries. (J.P.)

Users handbook

International Nuclear Information System (INIS)

Baldin, A.M.

1993-01-01

This guide book was arranged for colleagues who intend to use the facilities of LHE in collaboration with established groups or with their own experiments. The LHE accelerator complex at JINR has been described. Specifications and diagrams of different magnetic spectrometers, multiparticle spectrometers and other experimental setups used in LHE JINR have been presented

Brief review of topmost scientific results obtained in 2016 at the Joint Institute for Nuclear Research

International Nuclear Information System (INIS)

Kravchenko, E.I.; Sabaeva, E.V.

2017-01-01

This brief review presents the topmost scientific results obtained in 2016 at the Joint Institute for Nuclear Research in such fields as theoretical and experimental physics, radiation and radiobiological research, accelerators, information technology and computer physics. It also provides information about the publications by JINR staff members and activities carried out at the JINR University Centre in 2016. [ru

On the problem of synthesis of superheavy nuclei. A short historical review on first theoretical predictions

International Nuclear Information System (INIS)

Kalinkin, B.N.; Gareev, F.A.

1999-01-01

It is shown that it is just Dubna that possesses the priority both in the recent synthesis of a superheavy nucleus with charge Z=114 (Flerov Laboratory of Nuclear Reactions, JINR) and in its theoretical prediction (Bogolyubov Laboratory of Theoretical Physics, JINR) made 33 years ago. Possible sizes of the 'island of stability' of superheavy nuclei are discussed

The Armenian minister for trade and economic development Karen Chshmaritian, visited CERN on 4 July and toured the ATLAS experimental cavern and assembly hall

CERN Multimedia

Maximilien Brice

2003-01-01

Armenian Minister for Trade and Economic Development, K. Chshmaritian third from right with from left to right : Aram Kotzinian, JINR, Dubna; Dr Marzio Nessi, ATLAS, Zohrad Mnatsakanian, Ambassador at the Permanent Mission of the Republic of Armenia in Geneva, Karen Chshmaritian, Armenian Minister for Trade and Economic Development, Alexey Sissakian, Vice-Director of JINR and Peter Jenni, ATLAS Spokesperson.

JINR rapid communications

International Nuclear Information System (INIS)

1993-01-01

The possibility of observation of the heavy fermion band magnet state in rare-earth alloys Ce(Ru 1-x Rh x ) 2 B 2 and Ce(Cu 1-x N x ) 2 Ge 2 using inelastic neutron scattering has been discussed. The idea of new mechanism of induced coherent radiation by the atoms of a gas under the Cherenkov threshold is suggested. The reduced probabilities of delayed fission channels for 188 Bi and 196 At are determined. 4.5 x A x Gev/C deuteron and carbon nucleus fragmentation into cumulative pions has been measured on various target nuclei. The present states and future development of data acquisition system for the magnetic spectrometer SPHERE are described

The permanent forward (Some episodes from the history of the Laboratory of Nuclear Problems, 1949-1999)

International Nuclear Information System (INIS)

Soroko, L.M.

2001-01-01

Out of about 6000 scientific investigations, performed at the Laboratory of Nuclear Problems of the JINR during the 50 years of its activity, there were chosen those ones which can be regarded as being on the world scale, on the Russian or, finally, on the JINR's scale. The author was a participant or the direct witness of the episodes described in this paper

Hermeticity control system for the BMS/BMF-MDT chambers of the muon spectrometer of ATLAS experiment

International Nuclear Information System (INIS)

Barashkov, A.V.; Glonti, G.L.; Gongadze, A.L.; Dedovich, D.V.; Demichev, M.A.; Zhemchugov, A.S.; Il'yushenko, E.N.; Korolevich, Ya.V.; Kruchonok, V.G.; Lomidze, D.D.; Nikolaev, K.V.; Kharchenko, D.V.; Tskhadadze, Eh.G.; Chepurnov, V.F.; Shelkov, G.A.; Shcherbakov, A.A.

2005-01-01

Description of hermeticity certification of the JINR made muon chambers for the ATLAS experiment is presented. A high precision stand was installed in the production area of the DLNP, JINR. The description of the stand and results of the measurements and the description and results of the second testing of the drift chambers carried out after transportation to CERN are presented

European School of High-Energy Physics, Caramulo. Portugal, 20 August- 2 September 2000

CERN Multimedia

2000-01-01

The 2000 European School of High-Energy Physics (formerly the CERN-JINR School of Physics) will be organized jointly by the European Organization for Nuclear Research (CERN), Geneva, Switzerland and the Joint Institute for Nuclear Research (JINR), Dubna, Russia, together with LIP (Laboratório de Instrumentação e Física Experimental de Partículas) and the Faculty of Science and Technology of the University of Coimbra. The basic aim of the School is to teach various aspects of high-energy physics, but especially theoretical physics, to young experimental physicists, mainly from the Member States of CERN and of JINR. The Schools of Physics are designed to give a survey of up-to-date information, rather than to be a training course.

Distribution of two-phase flow thermal and hydraulic parameters over the cross-section of channels with a rod bundle

International Nuclear Information System (INIS)

Mironov, Yu.V.; Shpanskij, S.V.

1975-01-01

The paper describes PUCHOK-2, a program for thermohydraulic calculation of a channel with a bundle of smooth fuel elements. The pro.gram takes into consideration the non-uniformity of flow parameter distributions over the channel cross-section. The channel cross-section was divided into elementary cells, within which changes in flow parameters (mass velocity, heat- and steam content) were disregarded. The bundle was considered to be a system of parallel interconnected channels. Accounting for equal pressure drops in all the cells, the above model led to a system of non-linear algebraic equations. The system of equations was solved by the method of successive approximations. Theoretical results were compared with experimental data

Dubna - A University Town Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

1994 marked the opening of the Dubna International University of Nature, Society and Man. It was established on the initiative of the JINR Directorate and supported by the Academy of Natural Sciences of Russia. An integral part of the University is the JINR University Centre which offers educational programmes in high energy physics, nuclear physics, nuclear methods in condensed matter physics, applied physics, and radio-biology.

Particles and nuclei, letters, in Russian, pt.4

CERN Document Server

2002-01-01

The present collection of letters from JINR, Dubna, contains nine separate records on thermal multifragmentation, nuclear fog and critical temperature for the liquid-gas phase transition, topological and nontopological solutions for the chiral bag model with constituent quarks, comparison of ATLAS tilecal module No. 8 high-precision metrology measurement results obtained by laser (JINR) and photogrammetric (CERN) methods, calibration of the beam polarimeter at the JINR synchrophasotron, anomalous A-, t-dependence and the phase behaviour of partial wave of coherent production of radial state pi (1300), about some inverse problems of nuclear physics, the nuclear matter modification at intermediate energies, experimental research of the NN scattering with polarized particles at the VdG accelerator of Charles university. Project 'NN interactions' and the forward detector of the ANKE spectrometer. Scintillation and Cherenkov hodoscopes

Joint Institute for Nuclear Research Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

The JOINT INSTITUTE FOR NUCLEAR RESEARCH, JINR, was established by its founding countries in 1956 with the purpose of joining together the scientific and material potential of Member States in studies of the fundamental properties of matter. JINR is an international inter-governmental scientific research organization, whose activities are based on the principles of openness for participation to all interested states and of their equal, mutually beneficial collaboration.

Joint Institute for Nuclear Research Exhibition Science Bringing Nations Together

CERN Multimedia

1999-01-01

The JOINT INSTITUTE FOR NUCLEAR RESEARCH, JINR, was established by its founding countries in 1956 with the purpose of joining together the scientific and material potential of Member States in studies of the fundamental properties of matter. JINR is an international inter-governmental scientific research organization, the activities of which are based on the principles of openness for participation to all interested states of their equal, mutually beneficial collaboration.

Acknowledgements [3. international conference on small angle neutron scattering dedicated to the 80 anniversary of Yu.M. Ostanevich, Dubna (Russian Federation), 6-9 June 2016

International Nuclear Information System (INIS)

2017-01-01

The Organizers of the III International Conference on Small Angle Neutron Scattering dedicated to the 80-th anniversary of Yu. M. Ostanevich, acknowledge the financial support from the Grants of the Governmental Plenipotentiary Representatives of Romania, Slovakia, Czech Republic, scientific projects of the Cooperation Programmes JINR-Romania. Special gratitude to the JINR and FLNP administration and staff is expressed. The conference is also dedicated to the 60th Anniversary of the Joint Institute for Nuclear Research, Dubna. (paper)

Armenian visit

CERN Multimedia

2003-01-01

During his visit to CERN on 4 July 2003, Karen Chshmaritian, Armenian Minister for Trade and Economic Development, toured the ATLAS experimental cavern and assembly hall. From left to right: Aram Kotzinian, from the international organization JINR from Dubna, Marzio Nessi from ATLAS, Karen Chshmaritian, Armenian Minister for Trade and Economic Development, Zohrab Mnatsakanian, Ambassador at the Permanent Mission of the Republic of Armenia to the United Nations in Geneva, Alexandre Sissakian, Vice-Director of JINR and Peter Jenni, ATLAS spokesman.

Radiobiological Research in JINR

CERN Document Server

Krasavin, E A

2000-01-01

The results of long-term radiobiological and radiation-genetical research in DRRR (Division of Radiobiology) are summarized. The different radiation-induced effects in bacteria, yeasts, mammalian and human cells after irradiation by gamma-rays and heavy charged particles are considered. The important role of DNA repair processes in biological effectiveness of different types of radiation were shown. The data on mutagenic action of such kinds of radiation on pro- and eukaryotic cells were analyzed. On the basis of our data the hypersensitivity of human and mammalian chromosomes after low doses of gamma-rays (10-20 sGy) was revealed. The radiobiological effect of ^{211}At - methylene blue complex on human melanoma cells was studied. The extremely high effectiveness of this complex on melanoma cells was shown.

Investigation of light nucleus clustering in relativistic multifragmentation processes

International Nuclear Information System (INIS)

Adamovich, M.I.; Chernyavsky, M.M.; Dronov, V.A.

2004-01-01

The program of irradiation of emulsions in Nuclotrons beams named BECQUEREL Project is destined to continue irradiation in newly produced beams with the purpose of studying in detail processes of fragmentation of light radioactive nuclei, as well as obtaining basic information about the charge states of secondary particles in irradiation with medium and heavy nuclei.The advantages taken from the use of Nuclotrons beams consist in that a limiting fragmentation is set in, the reaction takes shortest time, fragmentation products are collimated in a narrow angle cone, and ionization losses of the reaction products are minimum.The expected results would make it possible to answer some topical questions concerning the cluster structure of light radioactive nuclei and to clarify the role of the collective effects in the dense matter of colliding nuclei. Thanks to the best spatial resolution, the nuclear emulsions offer the possibility to obtain unique results along these lines. Irradiations are performed in the secondary beams of He, Be, B, C and N radioactive nuclei formed on the basis of Nuclotrons primary beams of stable nuclei. The results on the coherent dissociation of Li, C, O, Mg, and S nuclei obtained by this method are now of special interest since they open new possibilities in understanding the topical problems of the structure of nuclei. The emulsions are especially helpful in the study with neutron deficient nuclei. It is especially interesting to search for evidences that there exists a proton halo for radioactive nuclei. The study of the nuclear structure is certain to have a deep relation to the nuclear aspects of astrophysical phenomena. The structure of nuclei can turn out to be another key to understanding the processes of synthesis of elements in stars, in Sun and primordial processes of nuclear synthesis when Universe was created. (authors)

DUBNA: Update

International Nuclear Information System (INIS)

Anon.

1993-01-01

Full text: At the annual session of the Plenipotentiaries Committee of the Joint Institute for Nuclear Research (JINR), Dubna, near Moscow in March, Institute Director Vladimir G. Kadyshevsky reported on important recent achievements. The Nuklotron superconducting accelerator has now been completed and is in operation. (A report will feature in a forthcoming edition of the CERN Courier.) The FOBOS multiple event spectrometer mounted in the heavy ion beam of the U-400M cyclotron is designed to record the products of nuclear reactions in the high mass and charge region with high efficiency. New experiments are envisaged. At the IBR research reactor a cryogenic moderator has been put into operation. Physics goals include generation of an impulse flux of cold neutrons. The neutron Fourier high resolution diffractometer was commissioned for polycrystal studies. Meanwhile an imaginative scheme to establish an International University using JINR research facilities and highly qualified personnel is being implemented. New appointments include Alexei Sissakian and Tzvetan Vylov as Vice-Directors, Nikolai Russakovitch as Chief Scientific Secretary, Vladislav Sarentzev as Chief Engineer and Alexandre Lebedev as Administrative Director. Western physicists elected members of JINR Scientific council include Ugo Amaldi and Lucien Montanet from CERN, Claude Detraz (IN2P3, Paris), Friedrich Dydak (Munich), Guido Piragino (Italy), George Trilling (Berkeley), Herwig Schopper (Germany) and Norbert Kroo (Hungary). Earlier this year saw the 80th birthday of Venedikt Dzhelepov, Honorary Director of JINR's Laboratory of Nuclear Problems

Doing More Together Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

The first international symposium on "LHC Physics and Detectors" was held in Dubna in 1996. The second one took place there in July 2000. But why did prominent world experts gather in Dubna if the LHC is under construction at CERN? The answer is that JINR makes an appreciable contribution both to the accelerator-related part of the project and to the development of the detectors for the experiments. As well as the scientific centres of JINR Member States, many factories, including former defence ones, are involved in this work.

Grid-system element of LCG-2 in DLNP

International Nuclear Information System (INIS)

Dolbilov, A.G.; Ivanov, Yu.P.

2008-01-01

We present here the description of the computer cluster at the Dzhelepov Laboratory of Nuclear Problems of JINR, where the second Grid note at JINR was realized. The configuration of the system, which allows effective joint usage of cluster resources both for local users and for others within the framework of the ATLAS collaboration is examined. Examples are given for basic stages of preparing and running ordinary cluster jobs and with the Grid usages, starting from obtaining CA certificates, submitting jobs and retrieving the results. Perspectives of the cluster upgrade are discussed

Neutron-rich isotopes of the lightest elements

International Nuclear Information System (INIS)

Oganesyan, Yu.Ts.; Penionzhkevich, Yu.Eh.; Kalpakchieva, R.

1989-01-01

A review is presented of the experimental investigations on the stability of very neutron-rich light nuclei carried out at the JINR Laboratory of Nuclear Reactions. Results on mass excess measurements are reported for 4 H, 5 H, 6 H, 7 H and for the superheavy helium isotope 9 He. Some results from the joint JINR-Ganil experiment on the search for and study of new neutron-rich light nuclei are also given. Analyzed are new possibilities for the investigation of multineutron decay of light nuclei. 14 refs.; 10 figs

Pramana – Journal of Physics | Indian Academy of Sciences

Indian Academy of Sciences (India)

A beam of 1 GeV proton coming from Dubna Nuclotron colliding with a lead target surrounded by 6 cm paraffin produces spallation neutrons. A Th-foil was kept on lead target (neutron spallation source) in a direct stream of neutrons for activation and other samples of 197Au, 209Bi, 59Co, 115In and 181Ta were irradiated by ...

Change at the top for the CERN physics schools

CERN Multimedia

2009-01-01

After directing the CERN physics schools since 1993, Egil Lillestøl has handed over to Nick Ellis. At the same time, Hélène Haller has taken over from Danielle Métral as the schools’ administrator. From left to right: Nick Ellis, Hélène Haller, Danielle Métral and Egil Lillestøl.The CERN physics schools for young experimentalists date back to the 1960s and as early as 1971 collaboration with the Joint Institute for Nuclear Research (JINR) in Dubna led to the Joint CERN-JINR schools, which reached beyond CERN’s Member States every two years. Then, in 1993, CERN and JINR agreed to organize the schools jointly every year, as the European School for High-Energy Physics. Egil Lillestøl, has not only run this school very successfully since then, but also created the CERN Latin American School of High-Energy Physics, beginning in 2001. Danielle Métral has been responsible for the schools’ administration since 2001, both for t...

Magnetic field errors tolerances of Nuclotron booster

Science.gov (United States)

Butenko, Andrey; Kazinova, Olha; Kostromin, Sergey; Mikhaylov, Vladimir; Tuzikov, Alexey; Khodzhibagiyan, Hamlet

2018-04-01

Generation of magnetic field in units of booster synchrotron for the NICA project is one of the most important conditions for getting the required parameters and qualitative accelerator operation. Research of linear and nonlinear dynamics of ion beam 197Au31+ in the booster have carried out with MADX program. Analytical estimation of magnetic field errors tolerance and numerical computation of dynamic aperture of booster DFO-magnetic lattice are presented. Closed orbit distortion with random errors of magnetic fields and errors in layout of booster units was evaluated.

Liquid helium plant in Dubna

International Nuclear Information System (INIS)

Agapov, N.N.; Baldin, A.M.; Kovalenko, A.D.

1995-01-01

The liquid-helium cooling capacity installed at the Laboratory of High Energies is about 5 kw at a 4.5 K temperature level. It is provided with four industrial helium liquefiers of 1.6 kw/4.5 K each. They have been made by the Russian enterprise NPO GELYMASH and upgraded by the specialists of the Laboratory. The first one was put into operation in 1980, the two others in 1991, and the last one is under commissioning. The development of the LHE cryoplant was concerned with the construction of the new superconducting accelerator Nuclotron aimed to accelerate nuclei and heavy ions up to energies of 6 GeV/u. The first test run at the Nuclotron was carried out in March 1993, and the total running time has been about 2000 hours up to now. Since 1992 the cryoplant has been intensively used by the users outside the Laboratory. More than a million liters of liquid helium was provided in 1993 for such users. The reliability of the cryoplant system was as high as 98 percent for 4500 hours of operation in 1993-1994. 7 refs., 4 figs., 1 tab

Study of secondary neutron interactions with Th-232, I-129, and I-127 nuclei with the uranium assembly "QUINTA" at 2, 4, and 8 GeV deuteron beams of the JINR Nuclotron accelerator

Czech Academy of Sciences Publication Activity Database

Adam, Jindřich; Chilap, V. V.; Furman, V. I.; Kadykov, M. G.; Khushvaktov, J.; Pronskikh, V. S.; Solnyshkin, A. A.; Stegailov, V. I.; Suchopár, Martin; Tsoupko-Sitnikov, V. M.; Tyutyunnikov, S. I.; Vrzalová, J.; Wagner, Vladimír; Závorka, L.

2016-01-01

Roč. 107, JAN (2016), s. 225-233 ISSN 0969-8043 R&D Projects: GA MŠk LG14004 Institutional support: RVO:61389005 Keywords : transmutation * fission reactions * accelerator driven system Subject RIV: BG - Nuclear , Atomic and Molecular Physics, Colliders Impact factor: 1.128, year: 2016

Recent progress with the Transition Radiation Tracker

CERN Multimedia

Froidevaux, D

Start-up of end-cap assembly in Russia On July 2nd at PNPI (first photo) and on August 1st at JINR Dubna (second photo), the first straws were inserted into the first 4-plane end-cap wheels, each containing 3072 straws. The straws were glued, the radiator stacks were installed and the PNPI wheel was tested for gas leaks. An initial large leak rate was observed and fixed by increasing somewhat the amount of glue around each straw end-piece and improving the leak-tightness of the testing equipment itself. PNPI will assemble a total of 48 4-plane wheels of type A using two assembly lines. JINR Dubna will assemble a total of 32 4-plane wheels of type B using a single assembly line. The next steps are the gluing of the so-called active webs (printed circuit boards connecting high voltage and signal lines from straw/wire to HV supply and front-end boards), followed by wiring, and will take place in November. PNPI and JINR Dubna should start mass production in February-March next year. Barrel module produc...

People and things. CERN Courier, Jan-Feb 1987, v. 27(1)

Energy Technology Data Exchange (ETDEWEB)

Anon.

1987-01-15

The article reports on achievements of various people, staff changes and position opportunities within the CERN organization and contains news updates on upcoming or past events. The search goes on for gravitational radiation, the existence of such waves was implied by the first formulations of general relativity some sixty years ago, but their detection has taxed the ingenuity of experimenters. Any signals would be easily screened by seismic noise, etc. In an effort to eliminate this background, a network of three highly sensitive cryogenic detectors was set up – one at CERN, used by a Rome group, another at Stanford and a third at Louisiana State. The 1987 JINR-CERN School of Physics is the tenth in a series organized by the Joint Institute for Nuclear Research (JINR, Dubna, USSR) and CERN. The aim is to teach various aspects of high energy physics, especially theoretical, to young experimentalists with at least one year's research experience, coming mainly from Member States of JINR and CERN. The fourth workshop to discuss physics at CERN's LEAR Low Energy Antiproton Ring will be held at Villars-sur-Ollon, Switzerland, from 6-13 September.

People and things. CERN Courier, Jan-Feb 1987, v. 27(1)

International Nuclear Information System (INIS)

Anon.

1987-01-01

The article reports on achievements of various people, staff changes and position opportunities within the CERN organization and contains news updates on upcoming or past events. The search goes on for gravitational radiation, the existence of such waves was implied by the first formulations of general relativity some sixty years ago, but their detection has taxed the ingenuity of experimenters. Any signals would be easily screened by seismic noise, etc. In an effort to eliminate this background, a network of three highly sensitive cryogenic detectors was set up – one at CERN, used by a Rome group, another at Stanford and a third at Louisiana State. The 1987 JINR-CERN School of Physics is the tenth in a series organized by the Joint Institute for Nuclear Research (JINR, Dubna, USSR) and CERN. The aim is to teach various aspects of high energy physics, especially theoretical, to young experimentalists with at least one year's research experience, coming mainly from Member States of JINR and CERN. The fourth workshop to discuss physics at CERN's LEAR Low Energy Antiproton Ring will be held at Villars-sur-Ollon, Switzerland, from 6-13 September

Educational Research Centre of the Joint Institute for Nuclear Research and students training on the 'Medical Physics' speciality

International Nuclear Information System (INIS)

Ivanova, S.P.; )

2005-01-01

The Educational Research Centre (ERC) of the Joint Institute for Nuclear Research is the place of joint activity of the JINR, Moscow State University (MSU) and Moscow Engineering Physical Institute (MEFI) on students training by a broadened circle of specialities with introduction of new educational forms. Active application of medical accelerator beams of the JINR Laboratory of Nuclear Beams becomes a reason for implementation of a new training chair in the MEFI on the JINR base - the Physical methods in applied studies in the medicine chair. For the 'medical physics' trend development in 2003 the workshop on discussion both curricula and teaching methodic by the speciality was held. One the Educational Research Centre main activities is both organization and conducting an international scientific schools and training courses. The International student School 'Nuclear-Physical Methods and Accelerators is the most popular and traditional. The principal aim of these schools and courses is familiarization of students and postgraduates with last achievement and and contemporary problems of applied medical physics. The school audience is a students and postgraduates of ERC, MSU, MEFI, and an institutes of Poland, Hungary, Slovakia, France, Czech and Bulgaria

Determination of spatial and energy distributions of neutrons in experiments on transmutation of radioactive waste using relativistic protons

International Nuclear Information System (INIS)

Zhuk, I.V.; Lomonosova, E.M.; Boulyga, S.F.; Kievitskaia, A.I.; Rakhno, I.L.; Chigrinov, S.E.; Bradnova, V.; Krivopustov, M.I.; Kulakov, B.A.; Brandt, R.; Ochs, M.; Wan, J.-S.

1999-01-01

The experiments on transmutation of 129 I and 237 Np using uranium-lead targets surrounded by a paraffin moderator were performed at the Joint Institute for Nuclear Research (JINR, Russia). The targets were irradiated by 1.5 GeV and 7.4 GeV protons at the Synchrophasotron of JINR. In the frame of present work spatial and energy distributions of neutrons on the surface of the paraffin moderator were measured using SSNTD technique. It is shown that measured values of spectral indices do not depend on the energy of incident protons but depend on the target composition. The presence of the uranium insertion softens neutron spectra

Determination of spatial and energy distributions of neutrons in experiments on transmutation of radioactive waste using relativistic protons

Energy Technology Data Exchange (ETDEWEB)

Zhuk, I.V.; Lomonosova, E.M.; Boulyga, S.F.; Kievitskaia, A.I.; Rakhno, I.L.; Chigrinov, S.E.; Bradnova, V.; Krivopustov, M.I.; Kulakov, B.A.; Brandt, R.; Ochs, M.; Wan, J.-S

1999-06-01

The experiments on transmutation of {sup 129}I and {sup 237}Np using uranium-lead targets surrounded by a paraffin moderator were performed at the Joint Institute for Nuclear Research (JINR, Russia). The targets were irradiated by 1.5 GeV and 7.4 GeV protons at the Synchrophasotron of JINR. In the frame of present work spatial and energy distributions of neutrons on the surface of the paraffin moderator were measured using SSNTD technique. It is shown that measured values of spectral indices do not depend on the energy of incident protons but depend on the target composition. The presence of the uranium insertion softens neutron spectra.

Once Upon a Time ... Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

In 1956, a year and a half after the establishment of the European Organization for Nuclear Research, CERN, the states of the "socialist bloc" signed an agreement establishing a similar international centre for the study of fundamental problems in physics: the Joint Institute for Nuclear Research, JINR. The seat of the Institute was chosen to be the town of Dubna, 120 km north of Moscow. Though the establish-ment of JINR was clearly a political response, during the Cold War, to the establishment of CERN, from the very beginning the Institute's activities were aimed solely at investigating the fundamental properties of matter and using scientific discoveries for peaceful purposes.

An experimental accelerator driven system based on plutonium subcritical assembly and 660 MeV protons accelerator

International Nuclear Information System (INIS)

Barashenkov, V.S.; Puzynin, I.V.; Sisakyan, A.N.; Polanski, A.

1999-01-01

We present a Plutonium Based Energy Amplifier Testing Concept, which employs a plutonium subcritical assembly and a 660 MeV proton accelerator operating in the JINR Laboratory of Nuclear Problems. Fuel designed for the pulsed neutron source IREN (Laboratory of Neutron Physics, JINR) will be adopted for the core of the assembly. To make the present conceptual design of the Plutonium Energy Amplifier we have chosen a nominal unit capacity of 20 kW (thermal). This corresponds to the multiplication coefficient K eff ranging between 0.94 and 0.95 and the energetic gain about 20. Accelerated current is in the range of 1-1.6μA

Particles and nuclei, letters

International Nuclear Information System (INIS)

2001-01-01

The present collection of letters from JINR, Dubna, contains eight separate records on the interaction of high energy Λ 6 He hypernuclear beams with atomic nuclei, the position-sensitive detector of a high spatial resolution on the basis of a multiwire gas electron multiplier, pseudorapidity hadron density at the LHC energy, high precision laser control of the ATLAS tile-calorimeter module mass production at JINR, a new approach to ECG's features recognition involving neural network, subcriticity of a uranium target enriched in 235 U, beam space charge effects in high-current cyclotron injector CI-5, a homogeneous static gravitational field and the principle of equivalence

Relation between sedimentation behaviour of DNA-membrane complexes and DNA single- and double-strand breaks after irradiation with gamma-rays, pulse neutrons and 12C ions

International Nuclear Information System (INIS)

Erzgraber, G.; Lapidus, I.L.

1985-01-01

The experimental data on sedimentation behaviour of DNA-membrane complexes at radiation of the Chinese hamster cells (V79-4) in a wide dose range of 127 Cs γ-rays, pulse neutrons (reactor IBR-2, Laboratory of Neutron Physics, JINR, Dubna) are accelerated 12 C ions (cyclotron U-200, Laboratory of Nuclear Reactions, JINR, Dubna) are presented An assumption on the role of DNA single- and double-strend breaks in changing the sedimentation properties of DNA-membrane complexes has been confirmed by the experiments with radiation of different quality. The possibility of estimating induction and repair of DNA breaks on the basis of dependence of the relative sedimentation velocity of complexes on the irradiation does is discussed

Analytical calculations by computer in physics and mathematics

International Nuclear Information System (INIS)

Gerdt, V.P.; Tarasov, O.V.; Shirokov, D.V.

1978-01-01

The review of present status of analytical calculations by computer is given. Some programming systems for analytical computations are considered. Such systems as SCHOONSCHIP, CLAM, REDUCE-2, SYMBAL, CAMAL, AVTO-ANALITIK which are implemented or will be implemented in JINR, and MACSYMA - one of the most developed systems - are discussed. It is shown on the basis of mathematical operations, realized in these systems, that they are appropriated for different problems of theoretical physics and mathematics, for example, for problems of quantum field theory, celestial mechanics, general relativity and so on. Some problems solved in JINR by programming systems for analytical computations are described. The review is intended for specialists in different fields of theoretical physics and mathematics

Determination of spatial and energy distributions of neutrons in experiments on transmutation of radioactive waste using relativistic protons

CERN Document Server

Zhuk, I V; Boulyga, S F; Kievitskaia, A I; Rakhno, I L; Chigrinov, S E; Bradnova, V; Krivopustov, M I; Kulakov, B A; Brandt, R; Ochs, M; Wan, J S

1999-01-01

The experiments on transmutation of sup 1 sup 2 sup 9 I and sup 2 sup 3 sup 7 Np using uranium-lead targets surrounded by a paraffin moderator were performed at the Joint Institute for Nuclear Research (JINR, Russia). The targets were irradiated by 1.5 GeV and 7.4 GeV protons at the Synchrophasotron of JINR. In the frame of present work spatial and energy distributions of neutrons on the surface of the paraffin moderator were measured using SSNTD technique. It is shown that measured values of spectral indices do not depend on the energy of incident protons but depend on the target composition. The presence of the uranium insertion softens neutron spectra.

Main concept of local area network protection on the basis of the SAAM 'TRAFFIC'

International Nuclear Information System (INIS)

Vasil'ev, P.M.; Kryukov, Yu.A.; Kuptsov, S.I.; Ivanov, V.V.; Koren'kov, V.V.

2002-01-01

In our previous paper we developed a system for acquisition, analysis and management of the network traffic (SAAM 'Traffic') for a segment of the JINR local area computer network (JINR LAN). In our present work we consider well-known scenarios of attacks on local area networks and propose protection methods based on the SAAM 'Traffic'. Although the system for LAN protection is installed on a router computer, it is not analogous to the firewall scheme and, thus, it does not hinder the performance of distributed network applications. This provides a possibility to apply such an approach to GRID-technologies, where network protection on the firewall basis can not be basically used. (author)

Spin-offs from Research Exhibition Science Bringing Nations Together

CERN Multimedia

1997-01-01

It is well known that the results of fundamental research can have unexpected and suc-cessful applications in different fields of human activity. A good example is that of nuclear track membranes. These membranes are produced by exposing polymer films to ion beams at isochronous cyclotrons in JINR. They are used in all fields that require reliable and ecologically safe filters; e.g. in medicine and in the food and elec-tronics industries. It is not surprising that Finnish businessmen readily accepted the proposal of the specialists from JINR's Laboratory of Nuclear Reactions to establish a joint venture for production of household water filters, and that these simple but effective devices are now used in many countries.

The Joint Institute for Nuclear Research in Experimental Physics of Elementary Particles

Science.gov (United States)

Bednyakov, V. A.; Russakovich, N. A.

2018-05-01

The year 2016 marks the 60th anniversary of the Joint Institute for Nuclear Research (JINR) in Dubna, an international intergovernmental organization for basic research in the fields of elementary particles, atomic nuclei, and condensed matter. Highly productive advances over this long road clearly show that the international basis and diversity of research guarantees successful development (and maintenance) of fundamental science. This is especially important for experimental research. In this review, the most significant achievements are briefly described with an attempt to look into the future (seven to ten years ahead) and show the role of JINR in solution of highly important problems in elementary particle physics, which is a fundamental field of modern natural sciences. This glimpse of the future is full of justified optimism.

Measurements of neutron yields and radioactive isotope transmutation in collisions of relativistic ions with heavy nuclei

International Nuclear Information System (INIS)

Brandt, R.

1999-01-01

The paper is based on the report presented at the 85th Session of the JINR Scientific Council. Some aspects of experimental studies of the problem of reprocessing radioactive wastes by means of transmutation in the fields of neutrons generated by relativistic particle beams are discussed. Research results on measurement of neutron yields in heavy targets irradiated with protons at energies up to 3.7 GeV as well as transmutation cross sections of some fission products (I-129) and actinides (Np-237) using radiochemical methods, activation detectors, solid state nuclear track detectors and other methods are presented. Experiments have been performed at the accelerator complex of the Laboratory of High Energies, JINR. Analogous results obtained by other research groups are also discussed

Atoms for Peace Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

CERN and JINR are providing safeguards on peaceful use of the potential of the Russian military and industrial complex by implementing scientific projects of the International Science and Technology Centre (ISTC).

Software and commands on VAX CERN. User's guide

International Nuclear Information System (INIS)

Balashov, V.K.; Trofimov, V.V.

1990-01-01

This guide describes a structure of applications software, which is available at VAX-type computers in JINR. The software includes program libraries, scientific programs and commands developed at CERN. 20 refs

JINR rapid communications. Collection no. 5

International Nuclear Information System (INIS)

1992-01-01

The volume includes 7 communications in the field of elementary particle physics (3 communications), nuclear physics (1 communication), atoms and molecules (1 communication), accelerators (1 communication) and nuclear instrumentation (1 communication). A separate abstract was prepared for each of them

1989 CERN-JINR school of physics

International Nuclear Information System (INIS)

1991-01-01

The CERN School of Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These Proceedings contain reports of lecture series on the following topics: Gauge theories and applications, precision tests of the electroweak theory (in two parts), physics beyond the Standard Model, and the experimental programme at the IHEP accelerator. (orig.)

Drift Chambers Simulations in BM@N Experiment

Directory of Open Access Journals (Sweden)

Fedorišin Ján

2016-01-01

Full Text Available Drift chambers constitute an important part of the tracking system of the BM@N experiment designed to study the production of baryonic matter at the Nuclotron energies. GEANT programming package is employed to investigate the drift chamber response to particles produced in relativistic nuclear collisions of C+C nuclei, which are simulated by the UrQMD and LAQGSM Monte Carlo generators. These simulations are combined with the first BM@N experimental data to estimate particle track coordinates and their errors.

Betatron tune measurement

International Nuclear Information System (INIS)

Dinev, D.

2001-01-01

On the basis of the comparative review of the methods for the betatron tune measurement in cyclic accelerators of synchrotrons type, the research of these methods is carried out from the point of view of their applicability to Nuclotron. Both methods using measurement of the statistical fluctuations of the beam current (Schottky noise) and methods using coherent beam excitation have been discussed. The emphasis is on the final results of importance for the tune measurement practice. Signal processing is briefly discussed too

Measurements of energy behaviour of spin-dependent np—observables over 1.2-3.7 GeV energy region Dubna ``Delta-Sigma'' Experiment

Science.gov (United States)

Sharov, V. I.; Anischenko, N. G.; Antonenko, V. G.; Averichev, S. A.; Azhgirey, L. S.; Bartenev, V. D.; Bazhanov, N. A.; Belyaev, A. A.; Blinov, N. A.; Borisov, N. S.; Borzakov, S. B.; Borzunov, Yu. T.; Bushuev, Yu. P.; Chernenko, L. P.; Chernykh, E. V.; Chumakov, V. F.; Dolgh, S. A.; Fedorov, A. N.; Fimushkin, V. V.; Finger, M.; Finger, M.; Golovanov, L. B.; Gurevich, G. M.; Guriev, D. K.; Janata, A.; Kirillov, A. D.; Kolomiets, V. G.; Komogorov, E. V.; Kovalenko, A. D.; Kovalev, A. I.; Krasnov, V. A.; Krstonoshich, P.; Kuzmin, E. S.; Kuzmin, N. A.; Ladygin, V. P.; Lazarev, A. B.; Lehar, F.; de Lesquen, A.; Liburg, M. Yu.; Livanov, A. N.; Lukhanin, A. A.; Maniakov, P. K.; Matafonov, V. N.; Matyushevsky, E. A.; Moroz, V. D.; Morozov, A. A.; Neganov, A. B.; Nikolaevsky, G. P.; Nomofilov, A. A.; Panteleev, Tz.; Pillpenko, Yu. K.; Pisarev, I. L.; Plis, Yu. A.; Polunin, Yu. P.; Prokofiev, A. N.; Prytkov, V. Yu.; Rukoyatkin, P. A.; Schedrov, V. A.; Schevelev, O. N.; Shilov, S. N.; Shindin, R. A.; Slunecka, M.; Slunečková, V.; Starikov, A. Yu.; Stoletov, G. D.; Strunov, L. N.; Svetov, A. L.; Usov, Yu. A.; Vasiliev, T.; Volkov, V. I.; Vorobiev, E. I.; Yudin, I. P.; Zaitsev, I. V.; Zhdanov, A. A.; Zhmyrov, V. N.

2005-01-01

New accurate data on the neutron-proton spin-dependent total cross section difference Δ σ L( np) at the neutron beam kinetic energies 1.4, 1.7, 1.9 and 2.0 GeV are presented. A number of physical and methodical results on investigation of an elastic np→pn charge exchange process over a few GeV region are also presented. Measurements were carried out at the Synchrophasotron and Nuclotron of the Veksler and Baldin Laboratory of High Energies of the Joint Institute for Nuclear Research.

Cryogenic system of the nuclotron - a new superconducting synchrotron

International Nuclear Information System (INIS)

Baldin, A.M.; Agapov, N.N.; Belushkin, V.A.; D'yachkov, E.I.; Khodzhibagiyan, H.G.; Kovalenko, A.D.; Makarov, L.G.; Matyushevsky, E.A.; Smirnov, A.A.

1994-01-01

The superconducting relativistic heavy ion accelerator was commissioned the last week of March in Dubna, and the first deuteron beam was circulated in the ring. The total cold mass of the magnetic system is about 80 tons. The magnet with a open-quotes coldclose quotes iron yoke and a hollow superconductor winding is refrigerated by a two-phase helium flow. All 160 magnets are connected in parallel with supply and return helium headers about 250 meters long. The cryogenic supply system is based on three helium refrigerators with a total capacity of 4.8 kW at 4.5 K. The results on the commissioning of the cryogenic system are presented

Cryogenic system of the nuclotron - a new superconducting synchrotron

International Nuclear Information System (INIS)

Baldin, A.M.; Agapov, N.N.; Belushkin, V.A.

1993-01-01

The superconducting relativistic heavy ion accelerator was commissioned the last week of March in Dubna, and the first deuteron beam was circulated in the ring. The total cold mass of the magnetic system is about 80 tons. The magnet with a 'cold' iron yoke and a hollow superconductor winding is refrigerated by a two-phase helium flow. All 160 magnets are connected in parallel with supply and return helium headers about 250 meters long. The cryogenic supply system is based on three helium refrigerators with a total capacity of 4.8 kW at 4.5 K. The results on the commissioning of the cryogenic system are presented. 11 refs.; 5 figs.; 1 tab

Microtron MT-25. Workshop on application of microtrons in nuclear physics

International Nuclear Information System (INIS)

Gangrskij, Yu.P.

1993-01-01

Problems of development of microtron equipment and construction of microtrons at scientific centers of JINR country-members are discussed. Results of experimental conducted in microtron beams are presented in the directions of photonuclear reactions, fission reactions, activation analysis

Synthesis of fermium and transfermium elements using calcium-48 beam

International Nuclear Information System (INIS)

Gupta, R.K.; Sandulescu, A.; Greiner, W.

1977-06-01

The fragmentation theory is used to suggest the possible targets to be used with the 48 Ca ion beam produced recently at the JINR U-30O heavy-ion cyclotron. Calculations are made for 100 252 102. (author)

Investigation of the compressed baryonic matter at the GSI accelerator complex*

Directory of Open Access Journals (Sweden)

Ladygin V.P.

2017-01-01

We are focusing here on the contribution of JINR to the CBM experiment: design of the superconducting dipole magnet; manufacture of the straw and micro-strip silicon detectors, participation in the data taking and analysis algorithms and physics program.

The Thomas-Reiche-Kuhn sum rule and the toroid moments

International Nuclear Information System (INIS)

Dubovik, V.M.

1975-01-01

By example of the Thomas-Reiche-Kuhn sum rule a procedure is given for calculating the retardation effects in any E-transition strengths via the toroid moments. The investigation has been performed at the Laboratory of Theoretical Physics, JINR

The Multi-Purpose Detector (MPD) of the collider experiment

Energy Technology Data Exchange (ETDEWEB)

Golovatyuk, V.; Kekelidze, V.; Kolesnikov, V.; Rogachevsky, O. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Sorin, A. [Joint Institute for Nuclear Research, Dubna (Russian Federation); National Research Nuclear University (MEPhI), Moscow (Russian Federation)

2016-08-15

The project NICA (Nuclotron-based Ion Collider fAcility) is aimed to study dense baryonic matter in heavy-ion collisions in the energy range up to √(s{sub NN}) = 11 GeV with average luminosity of L = 10{sup 27} cm{sup -2}s{sup -1} (for {sup 197}Au{sup 79}). The experimental program at the NICA collider will be performed with the Multi-Purpose Detector (MPD). We report on the main physics objectives of the NICA heavy-ion program and present the main detector components. (orig.)

Measurement of parameters of extracted beams of charged particles at the LVE accelerating complex; Izmerenie parametrov vyvedennykh puchkov zaryazhennykh chastits na uskoritel`nom komplekse LVEh

Energy Technology Data Exchange (ETDEWEB)

Balandikov, A N; Volkov, V I; Gorchenko, V M [and others

1996-12-31

Paper described equipment to measure intensity and space parameters of charged particle beams to be output from the JINR synchrophasotron. Equipment of preliminary recording of signals from multiwire ionization chambers was developed to measure space parameters of beams. 6 refs.; 5 figs.

Pramana – Journal of Physics | Indian Academy of Sciences

Indian Academy of Sciences (India)

... Valencia, Spain; Institute of High Energy Physics, Academia Sinica, Beijing, China; Departamento de Fisica Moderna, Universidad de Granada, Spain; Physics Department, Nara Women University, Nara, Japan; Laboratory of Theoretical Physics, JINR Dubna, Russia; Departament d'Estructura i Constituents de la Materia, ...

The study of the particle trajectories in the magnetic fields of MARUSYA setup using GEANT 3 package

International Nuclear Information System (INIS)

Argintaru, Danut; Besliu, Calin; Jipa, Alexandru; Esanu, Tiberiu; Calin, Marius; Argintaru, Cristina

2005-01-01

Using the GEANT 3 package we simulate the trajectories of the detected particles in the MARUSYA (JINR Dubna) setup. The dependence between the particle momenta and TOF, dE/dx, velocities and angles are important both for the detectors design and particle identification (PID). (authors)

Spectrometer based on the silicon semiconductor detectors for a study of the two charged particles correlation

International Nuclear Information System (INIS)

Krumsztein, Z.W.; Siemiarczuk, T.; Szawlowski, M.

1974-01-01

The spectrometer based on the silicon semiconductor detectors for a study of the correlation between two charged particles is described. The results of the time resolution and particles identification measurements are presented. The tests were performed in the proton beam of the JINR synchrocyclotron. (author)

Measuring and acquisition unit of the polarized neutron spectrometer SPN-1; Izmeritel`no0nakopitel`nyj modul` spektrometra na polyarizovannykh nejtronakh SPI-1

Energy Technology Data Exchange (ETDEWEB)

Zhuravlev, V V; Korneev, D A; Litvinenko, E I; Lyapin, D I

1996-12-31

SPN-1 polarized neutron time-of-flight spectrometer operates on IBR-2 reactor in JINR LNF. It is used to investigate into micromagnetism in ferromagnetics and superconductors as well as to investigate into mono and multilayer magnetic and superconducting thin films. 14 refs.; 3 figs.

Observation of candidates for heavy positively charged S=-2 H+ dibaryon with a weak decay channel H+→Λ+p+π0

International Nuclear Information System (INIS)

Aslanyan, P.Zh.; Emel'yanenko, V.N.; Rikhvitskij, V.S.

2001-01-01

Two events were detected on the photographs from the JINR 2m propane bubble chamber exposed to a 10 GeV/c proton beam, which can be interpreted as heavy S=-2 H + stable dibaryon with a weak decay H + →Λ+p+π 0

DUBNA: Member States

International Nuclear Information System (INIS)

Anon.

1992-01-01

The political upheaval in what was the Soviet Union was reflected in an Extraordinary Plenipotentiaries Committee of Joint Institute for Nuclear Research (JINR) Member States, held in Dubna, near Moscow, on 10-13 December, with representatives of eleven sovereign republics of the former Soviet State taking part

Some peculiarity of element analysis using charged particle beams

International Nuclear Information System (INIS)

Kobzev, A.P.; Abu-Alazm, S.M.; Helal, A.I.; Zahran, N.F.

2002-01-01

Multilayer structures, SiC -layers at Si substrate, have been analyzed by RBS, NR, ERD and PIXE methods using the charged particle beams from EG-5 Van de Graaff accelerator of JINR. The depth profiles of the based deposited layers were obtained for the multilayer structures

Joint annual report 1984

International Nuclear Information System (INIS)

Hennig, K.

1985-06-01

An account is given on the activities in nuclear and solid state physcis. In the field of relativistic nuclear physcis first measurements at the Synchrophasotron of the JINR Dubna are presented. Nuclear reactions with heavy ions have been investigated at the cyclotron U-300 of the JINR. Studies of few-nucleon problems and measurements of fission cross sections at the tandem accelerator at Rossendorf have been continued. High spin states in transition nuclei (A approximately 80) and semimagic nuclei have been studied. Works in nuclear theory comprise heavy ion physics, plasma transitions in hot nuclear matter, antikaon production, hypernuclei and deformed nuclei, the time-dependent Hartree-Fock method, meson exchange, and new aspects of shell models. Various studies in solid state physics are presented, including the following: high-dose implantation in metals and semiconductors, tempering in semiconductor materials, light pulse annealing in Si, neutron diffraction in texture analysis, application of Si in the field of sensor technology

Automation of experiments at Dubna Gas-Filled Recoil Separator

Science.gov (United States)

Tsyganov, Yu. S.

2016-01-01

Approaches to solving the problems of automation of basic processes in long-term experiments in heavy ion beams of the Dubna Gas-Filled Recoil Separator (DGFRS) facility are considered. Approaches in the field of spectrometry, both of rare α decays of superheavy nuclei and those for constructing monitoring systems to provide accident-free experiment running with highly radioactive targets and recording basic parameters of experiment, are described. The specific features of Double Side Silicon Strip Detectors (DSSSDs) are considered, special attention is paid to the role of boundary effects of neighboring p-n transitions in the "active correlations" method. An example of an off-beam experiment attempting to observe Zeno effect is briefly considered. Basic examples for nuclear reactions of complete fusion at 48Ca ion beams of U-400 cyclotron (LNR, JINR) are given. A scenario of development of the "active correlations" method for the case of very high intensity beams of heavy ions at promising accelerators of LNR, JINR, is presented.

A drift chamber with a new type of straws for operation in vacuum

Science.gov (United States)

Azorskiy, N.; Glonti, L.; Gusakov, Yu.; Elsha, V.; Enik, T.; Kakurin, S.; Kekelidze, V.; Kislov, E.; Kolesnikov, A.; Madigozhin, D.; Movchan, S.; Polenkevich, I.; Potrebenikov, Yu.; Samsonov, V.; Shkarovskiy, S.; Sotnikov, S.; Zinchenko, A.; Danielsson, H.; Bendotti, J.; Degrange, J.; Dixon, N.; Lichard, P.; Morant, J.; Palladino, V.; Gomez, F. Perez; Ruggiero, G.; Vergain, M.

2016-07-01

A 2150×2150 mm2 registration area drift chamber capable of working in vacuum is presented. Thin-wall tubes (straws) of a new type are used in the chamber. A large share of these 9.80 mm diameter drift tubes are made in Dubna from metalized 36 μm Mylar film welded along the generatrix using an ultrasonic welding machine created at JINR. The main features of the chamber and some characteristics of the drift tubes are described. Four such chambers with the X, Y, U, V coordinates each, containing 7168 straws in total, are designed and produced at JINR and CERN. They are installed in the vacuum volume of the NA62 setup in order to study the ultra-rare decay K+ →π+ vv bar and to search for and study rare meson decays. In autumn 2014 the chambers were used for the first time for the data taking in the experimental run of the NA62 at CERN's SPS.

Hadron calorimeter module prototype for baryonic matter studies at Nuclotron

OpenAIRE

Gavrishchuk, O. P.; Ladygin, V. P.; Petukhov, Yu. P.; Sychkov, S. Ya

2014-01-01

The prototype of the hadron calorimeter module consisting of 66 scintillator/lead layers with the 15x15 cm^2 cross section and 5 nuclear interaction lengths has been designed and produced for the zero degree calorimeter of the BM@N experiment. The prototype has been tested with high energy muon beam of the U-70 accelerator at IHEP. The results of the beam test for different types of photo multipliers and light guides are presented. The results of the Monte-Carlo simulation of the calorimeter ...

Application of activation methods on the Dubna experimental transmutation set-ups.

Science.gov (United States)

Stoulos, S; Fragopoulou, M; Adloff, J C; Debeauvais, M; Brandt, R; Westmeier, W; Krivopustov, M; Sosnin, A; Papastefanou, C; Zamani, M; Manolopoulou, M

2003-02-01

High spallation neutron fluxes were produced by irradiating massive heavy targets with proton beams in the GeV range. The experiments were performed at the Dubna High Energy Laboratory using the nuclotron accelerator. Two different experimental set-ups were used to produce neutron spectra convenient for transmutation of radioactive waste by (n,x) reactions. By a theoretical analysis neutron spectra can be reproduced from activation measurements. Thermal-epithermal and fast-super-fast neutron fluxes were estimated using the 197Au, 238U (n,gamma) and (n,2n) reactions, respectively. Depleted uranium transmutation rates were also studied in both experiments.

Numerical methods for solution of some nonlinear problems of mathematical physics

International Nuclear Information System (INIS)

Zhidkov, E.P.

1981-01-01

The continuous analog of the Newton method and its application to some nonlinear problems of mathematical physics using a computer is considered. It is shown that the application of this method in JINR to the wide range of nonlinear problems has shown its universality and high efficiency [ru

DViN - stationary setup for identification of explosives

International Nuclear Information System (INIS)

Bystritskij, V.M.; Gerasimov, V.V.; Kadyshevskij, V.G.

2007-01-01

A stationary system for identification of hidden explosives has been developed and constructed at the Joint Institute for Nuclear Research (JINR). The results of the examination of the system as well as the operation principle of the system and design of the main elements are presented in this paper

Configurable data and CAMAC hardware representations for implementation of the SPHERE DAQ and offline systems

International Nuclear Information System (INIS)

Isupov, A.Yu.

2001-01-01

An implementation of the experimental data configurable representation for using in the DAQ and offline systems of the SPHERE setup at the LHE, JINR is described. A software scheme of the SPHERE CAMAC hardware's configurable description, intended to online data acquisition (DAQ) implementation based on the qdpb system, is issued

Radioactive sources for ATLAS hadron tile calorimeter calibration

International Nuclear Information System (INIS)

Budagov, Yu.; Cavalli-Sforza, M.; Ivanyushenkov, Yu.

1997-01-01

The main requirements for radioactive sources applied in the TileCal calibration systems are formulated; technology of the sources production developed in the Laboratory of Nuclear Problems, JINR is described. Design and characteristics of the prototype sources manufactured in Dubna and tested on ATLAS TileCal module 0 are presented

Collection of scientific papers in collaboration with Joint Institute for Nuclear Research, Dubna, USSR and Central Research Institute for Physics, Budapest, Hungary Pt. 5

International Nuclear Information System (INIS)

Nemeth, G.

1987-04-01

The results of JINR (Dubna) - CRIP (Budapest) collaboration in the field of numerical and computer methods for solving physical problems are reported. The topics cover pure mathematical problems with applications in organization theory, numerical data handling, construction and simulation of physical devices and reinterpretation of current problems in mathematical physics. (D.Gy.)

Spectrometer for neutron inelastic scattering investigations of microsamples

International Nuclear Information System (INIS)

Balagurov, A.M.; Kozlenko, D.P.; Platonov, S.L.; Savenko, B.N.; Glazkov, V.P.; Krasnikov, Yu.M.; Naumov, I.V.; Pukhov, A.V.; Somenkov, V.A.; Syrykh, G.F.

1997-01-01

A new neutron spectrometer for investigation of inelastic neutron scattering on polycrystal microsamples under high pressure in sapphire and diamond anvils cells is described. The spectrometer is operating at the IBR-2 pulsed reactor in JINR. Parameters and methodical peculiarities of the spectrometer and the examples of experimental studies are given. (author)

Inelastic collisions of neon 22 nuclei with photoemulsion at 4.1 A GeV/c

International Nuclear Information System (INIS)

Tolstov, K.D.

1987-01-01

Inelastic collisions of neon-22 nuclei accelerated at the JINR synchrophasotron with BR-2 photoemulsion nuclei are investigated. Colliding nuclei fragmentation including their total disintegration, pion production, correlation ratios are studied. There are particular cases of 22 Ne-emulsion collisions, i.e. manifestation of collective effects in inelastic collisions of relativistic nuclei

Track calorimeter (TCAL) of alpha magnetic spectrometer (AMS) (a particle physics experiment on the international space station alpha)

International Nuclear Information System (INIS)

Anosov, V.; Baranov, S.; Bednyakov, V.

1999-01-01

Based on the simulation and R and D results the JINR project - to supplement AMS with a finely granulated scintillator calorimeter (TCAL) - is discussed. The project cost is about 1 million USD. TCAL would essentially increase the AMS potential in the studies of antimatter, matter and missing matter in the experiments in outer space

(n,xn cross section measurements for Y-89 foils used as detectors for high energy neutron measurements in the deeply subcritical assembly “QUINTA”

Directory of Open Access Journals (Sweden)

Bielewicz Marcin

2017-01-01

Full Text Available Study of the deep subcritical systems (QUINTA using relativistic beams is performed within the project “Energy and Transmutation of Radioactive Wastes” (E&T – RAW. The experiment assembly was irradiated by deuteron/proton beam (Dubna NUCLOTRON. We calculated the neutron energy spectrum inside the whole assembly by using threshold energy (n,xn reactions in yttrium (Y-89 foils. There are almost no experimental cross section data for those reactions. New Y-89(n,xn cross section measurements were carried out at The Svedberg laboratory (TSL in Uppsala, Sweden in 2015. In this paper we present preliminary results of those experiments.

Applied research with cyclotron beams at FLNR JINR

Energy Technology Data Exchange (ETDEWEB)

Oganessian, Yu Ts; Apel, P Yu; Didyk, A Yu; Dmitriev, S N; Gulbekian, G G [Joint Inst. for Nuclear Research, Dubna, Moscow (Russian Federation). Flerov Lab. of Nuclear Reactions

1997-03-01

The Center of Applied Physics at the Flerov Laboratory carries out an R and D program comprising development of track membrane technology, materials research with heavy ion beams and production of radioisotopes. Experiments are performed on three cyclotrons: U-400, U-200 and IC-100 providing a wide variety of ion beams with the energies of 1 to 10 MeV/u. The activity on track membranes (TMs) includes studies of track formation in polymers and latent track structure, track sensitization and etching, methods of membrane testing, development of track membranes on the basis of new materials, surface modification of TMs, design and construction of facilities for track membrane production. Recent experiments on heavy ion-induced radiation damage in non-polymeric substances have been devoted to defect creation in semiconductor and dielectric single crystals. TEM, SEM, STM and `in situ` luminescent spectroscopy are used to investigate heavy ion effects. Methods for producing several isotopes of high radiochemical and isotopic purity for medical, biomedical and environmental protection applications have been developed. (author)

Software development minimum guidance system. Algorithm and specifications of realizing special hardware processor data prefilter program

International Nuclear Information System (INIS)

Baginyan, S.A.; Govorun, N.N.; Tkhang, T.L.; Shigaev, V.N.

1982-01-01

Software development minimum guidance system for measuring pictures of bubble chamber on the base of a scanner (HPD) and special hardware processor (SHP) is described. The algorithm of selective filter is proposed. The local software structure and functional specifications of its major parts are described. Some examples of processing picture from HBC-1 (JINR) are also presented

Quark confinement and the quark model

International Nuclear Information System (INIS)

Kuti, J.

1977-01-01

The CERN-JINR School of Physics is meant to give young experimental physicists and introduction to the theoretical aspects of recent advances in elementary particle physics. The purpose of the lectures contained in this paper is to discuss recent work on the quark model and its applications to hadron spectroscopy and some high-energy phenomena. (Auth.)

Cellular automaton and elastic net for event reconstruction in the NEMO-2 experiment

International Nuclear Information System (INIS)

Kovalenko, V.

1997-01-01

A cellular automaton for track searching and an elastic net for charged particle trajectory fitting are presented. The advantages of the methods are: simplicity of the algorithms, fast and stable convergence to real tracks, and a reconstruction efficiency close to 100%. Demonstration programs are available at http://nuweb.jinr.dubna.su/LNP/NEMO using a Java enabled browser. (orig.)

Simulations for the neutron detector TETRA with MCNP

International Nuclear Information System (INIS)

Testov, D.; Kuznetsova, E.; Wilson, Jh.

2013-01-01

To study the nuclear structure of β-delayed neutron precursors at ALTO ISOL-facility at IPN (Orsay), the high efficiency 4π neutron detector TETRA with 3 He filled counters built at JINR (Dubna) was modified. The MCNP simulations to optimize the future configuration were necessary. The details of the calculations and the major results obtained are discussed

Work of the Liquid Deuterium Target of the Joint Institute for Nuclear Research at the Yerevan Electron Acceleration Ring

CERN Document Server

Golovanov, L B; Panebratsev, Yu A; Tsvinev, A P; Chumakov, V F; Shimansky, S S; Babayan, K Z; Mirzoyan, A E; Movsesyan, G D; Sirunyan, A M

2003-01-01

A cryogenic installation with a target filled with liquid hydrogen (deuterium), developed in the LHE JINR is described. The installation was used in an experimental run at the Yerevan ring accelerator with a beam of polarized photons. A description of the installation, features of its work in the YerPhI and its operational parameters is given.

First nuclear activation experiments using the new accelerator NUCLOTRON in Dubna

Czech Academy of Sciences Publication Activity Database

Adam, Jindřich; Barabanov, M. Y.; Bradnova, V.; Brandt, R.; Charoun, P.; Hella, KM.; Hashemi-Nezhad, R. S.; Kalinnikov, V. G.; Krasnov, VA.; Krivopustov, M. I.; Kulakov, BA.; Odoj, R.; Pronskikh, V. S.; Robotham, H.; Solnyshkin, A. A.; Sosnin, A. N.; Stegailov, V. I.; Tsoupko-Sitnikov, V. M.; Westmeier, W.

2003-01-01

Roč. 68, 5/6 (2003), s. 214-218 ISSN 0932-3902 R&D Projects: GA AV ČR KSK2067107 Keywords : energy proton-beams * spallation neutrons Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders Impact factor: 0.130, year: 2003

Fission dynamics of the compound nucleus Fr formed in heavy-ion ...

Indian Academy of Sciences (India)

The phenomenological friction turned out to be smaller than the standard wall formula value for nuclear friction up to the saddle point, and it would sharply increase between saddle and scission points. Further ..... A556, 281 (1993). [5] J R Nix and A J Sierk, Report No. JINR-D7-87-68, 1987 (unpublished). [6] J R Nix and A J ...

CAMAC high energy physics electronics hardware

International Nuclear Information System (INIS)

Kolpakov, I.F.

1977-01-01

CAMAC hardware for high energy physics large spectrometers and control systems is reviewed as is the development of CAMAC modules at the High Energy Laboratory, JINR (Dubna). The total number of crates used at the Laboratory is 179. The number of CAMAC modules of 120 different types exceeds 1700. The principles of organization and the structure of developed CAMAC systems are described. (author)

On transverse momentum dependence of average multiplicity

International Nuclear Information System (INIS)

Slepchenko, L.A.; Matveev, V.A.; Sissakian, A.N.

1975-01-01

The behaviour of the mean associated multiplicity of the secondary particles as function of the transverse momentum is considered. New scaling regularities of the cross-sections of the semi-inclusive reactions are predicted and compared with the experimental data obtained in the two-meter propane chamber of JINR, irradiated by π - -mesons with p=40 GeV/c at the Serpukhov accelerator

Experimental Investigation of Muon-Catalyzed $dt$ Fusion in Wide Ranges of $D/T$ Mixture Conditions

CERN Document Server

Bom, V R; Demin, D L; van Eijk, C W E; Faifman, M P; Filchenkov, V V; Golubkov, A N; Grafov, N N; Grishenchkin, S K; Gritsaj, K I; Klevtsov, V G; Konin, A D; Kuryakin, A V; Medved', S V; Musyaev, R K; Perevozchikov, V V; Rudenko, A I; Sadetsky, S M; Vinogradov, Yu I; Yukhimchuk, A A; Yukhimchuk, S A; Zinov, V G; Zlatoustovskii, S V

2004-01-01

A vast program of the experimental investigation of muon-catalyzed $dt$ fusion was performed at the JINR Phasotron. Parameters of the $dt$ cycle were obtained in a wide range of $D/T$ mixture conditions: temperatures of $20\\div 800$ K, densities of $0.2\\div1.2$ LHD and tritium concentrations of $15\\div 86\\%$. The results obtained are summarized.

Superconducting polarizing magnet for a movable polarized target

International Nuclear Information System (INIS)

Anishchenko, N.G.; Bartenev, V.D.; Blinov, N.A.

1998-01-01

The superconducting polarizing magnet was constructed for the JINR (Dubna) movable polarized target (MPT) with working volume 200 mm long and 30 mm in diameter. The magnet provides a polarizing magnetic field up to 6 T in the centre with the uniformity of 4.5 x 10 -4 in the working volume of the target. The magnet contains a main solenoidal winding 558 mm long and 206/144 mm in diameters, and compensating and correcting winding placed at its ends. The windings are made of a NbTi wire, impregnated with the epoxy resin and placed in the horizontal cryostat. The diameter of the 'warm' aperture of the magnet cryostat is 96 mm. The design and technology of the magnet winding are described. Results of the magnetic field map measurements, using a NMR-magnetometer are given. A similar magnet constructed at DAPNIA, CEA/Saclay (France), represented a model for the present development. The MPT array is installed in the beam line of polarized neutrons produced by break-up of polarized deuterons extracted from the synchrophasotron of the Laboratory of High Energies (LHE), JINR (Dubna)

The hypertext information system on pulsed neutron sources and scientific investigations based on these sources

International Nuclear Information System (INIS)

Litvinenko, E.I; Astakhov, Yu.A.; Akishina, E.P.; Semenov, R.N.; Smol'kov, I.S.

1998-01-01

The work on the creation of the hypertext information system has been performed on the basis of the web-server of the Frank Laboratory of Neutron Physics, JINR. The initial project proposed the creation of HTML information resources and did not consider the usage of any database for the information management. During the project implementation it became obvious that the system should have well defined structured informational model and it might be helpful to imply the relational database as a part of the system. The ORACLE server at the Laboratory of Computing Techniques and Automation (LCTA) of the JINR has been used for this task. Now we have a set of ORACLE tables designed using CASE tools for the informational model of the system, structured information about neutron sources, neutron instruments, printed publications and URL addresses. We have also the web interface to these tables using free ware gateway ORALINK installed on our Pentium PC with Windows NT and some tools to administer database and view pictures stored in the tables. We took into account NeXuS specifications while tried to design the informational model of the system, and we continue to work on its creation

1996 European school of high-energy physics. Proceedings

Energy Technology Data Exchange (ETDEWEB)

Ellis, N; Neubert, M [eds.

1997-07-02

The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on Field Theory, Physics Beyond the Standard Model, Flavour Physics, Neutrino Physics, Collider Physics and Astrophysics, as well as reports on Heavy-Ion Physics, the Large Hadron Collider Project and Physics in JINR/Russia. (orig.)

1996 European school of high-energy physics. Proceedings

International Nuclear Information System (INIS)

Ellis, N.; Neubert, M.

1997-01-01

The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on Field Theory, Physics Beyond the Standard Model, Flavour Physics, Neutrino Physics, Collider Physics and Astrophysics, as well as reports on Heavy-Ion Physics, the Large Hadron Collider Project and Physics in JINR/Russia. (orig.)

NEWS ITEMS FROM THE JOINT INSTITUTE FOR NUCLEAR RESEARCH

International Nuclear Information System (INIS)

Starchenko, B.M.

1988-01-01

A summary of the topics which were discussed at the tenth annual International JINR-CERN School of Physics is presented. Young scientists representing seventeen countries attended the school. Thorough discussions of particle interactions and experimental programs at the major laboratories were presented. Quantum field theory, perturbative QCD, lepton-nucleon scattering, e + e - annihilition, weak interactions, electroweak interactions, etc. were included in these broad discussions

Modified method for registration of particle deflection by bent crystal

International Nuclear Information System (INIS)

Afanas'ev, S.V.; Kovalenko, A.D.; Kuznetsov, V.N.; Romanov, S.V.; Sajfulin, Sh.Z.; Taratin, A.M.; Volkov, V.I.; Voevodin, M.A.; Bojko, V.V.

2003-01-01

The modified method for registration of particle deflection by a bent crystal was proposed and studied at the external proton beam of the Nuclotron. The telescope of scintillation counters was placed at the angle that was smaller than a crystal bending angle. The count dependence of the telescope on the crystal orientation was formed by the particles, which passed in channeling states only some part of the crystal length. Two maximums were observed in the dependencies due to particles captured into the channeling states on the crystal surface and in the crystal volume. This allows one to obtain, using the telescope and high-intensity beams, useful data about the particle channeling and the crystal, which usually demands more complicated registration by means of the coordinate detectors

SING-dialoque subsystem for graphical representation of one-dimensional array contents

International Nuclear Information System (INIS)

Karlov, A.A.; Kirilov, A.S.

1979-01-01

General principles of organization and main features of dialogue subsystem for graphical representation of one-dimensional array contents are considered. The subsystem is developed for remote display station of the JINR BESM-6 computer. Some examples of using the subsystem for drawing curves and histograms are given. The subsystem is developed according to modern dialogue systems requirements. It is ''open'' for extension and could be installed into other computers [ru

When Biology & Physics Meet Exhibition Science Bringing Nations Together

CERN Multimedia

1997-01-01

Politicians have come to realize the necessity of uniting the efforts of scientists. This is clear from the address of the President of Georgia E Shevardnadze to the JINR scientists : "The idea of collective participation in fundamental research is not only valuable per se. It is another opportunity for harmonious co-operation of representatives of different peoples and scientific schools in the single process of evolution of the world civilisation".

Experimental complex to study nuclei far from beta-stability line-isol-facility YASNAPP-2

International Nuclear Information System (INIS)

Kalinnikov, V.G.; Gromov, K.Ya.; Ianicki, M.

1990-01-01

A complex of installations (complex YASNAPP-2), developed for spectroscopic investigations of short-lived isotopes and working on the line of the proton beam of the JINR phasotron, is briefly described. The first physics results of investigations of short-lived nuclides in the rare earth region are presented: the alpha-spectrum of A=155 and the gamma-gamma coincidence spectrum for A=157. 25 refs.; 9 figs.; 2 tabs

Dubna - the great survivor

International Nuclear Information System (INIS)

Fraser, Gordon

1994-01-01

This year, as CERN celebrates its 40th anniversary (November, page 26), not far behind in the celebration stakes is the Joint Institute for Nuclear Research, Dubna, near Moscow, established in 1956. While CERN's goal was to provide a physics platform on which to rebuild Western European science after World War II, JINR had a similar mission for the USSR and the socialist countries, including Eastern Europe

The quantum number color, colored quarks and QCD. (Dedicated to 40. anniversary of the discovery of the quantum number color)

International Nuclear Information System (INIS)

Matveev, V.A.; Tavkhelidze, A.N.

2006-01-01

A brief review is given of the priority works which were mainly carried out at the Laboratory of Theoretical Physics, JINR, and devoted to the introduction to hadron physics of the concept of color and colored quarks, and to the description of hadrons in the framework of the model of quasi-free quarks. These ideas play a key role in the modern theory of strong interactions - quantum chromodynamics

Irradiation tests of readout chain components of the ATLAS liquid argon calorimeters

International Nuclear Information System (INIS)

Leroy, C.; Cheplakov, A.; Golikov, V.; Golubykh, S.; Kukhtin, V.; Kulagin, E.; Lushchikov, V.; Minashkin, V.; Shalyugin, A.

2000-01-01

Various readout chain components of the ATLAS liquid argon calorimeters have been exposed to high neutron fluences and γ doses at the irradiation test facility of the IBR-2 reactor of JINR, Dubna. Results of the capacitance and impedance measurements of coaxial cables are presented. Results of peeling tests of PC board samples (carton and copper strips) as a measure of the bonding agent irradiation hardness are also reported

The LHC Transverse Damper (ADT) Performance Specification

CERN Document Server

Boussard, Daniel; Linnecar, Trevor Paul R; CERN. Geneva. SPS and LEP Division

1997-01-01

The appended document specifies the performance of the transverse damper (ADT) for the LHC. As Annex 1 of the Addendum No.1 to the Protocol of April 18, 1997; it forms part of the 1992 co-operation agreement between CERN and JINR (Dubna, Russia) concerning its participation in the LHC project. The current text is a reprint of the original version. Changes that have been agreed upon are inserted as footnotes.

Cross sections of the interactions of He nuclei with protons

International Nuclear Information System (INIS)

Glagolev, V.V.; Lebedev, R.M.; Pestova, G.D.; Shimansky, S.S.; Kravcikova, M.; Seman, M.; Sandor, L.; Dirner, A.; Hlavacova, J.; Martinska, G.; Urban, J.; Khairetdinov, K.U.; Braun, H.; Gerber, J.P.; Juillot, P.; Michalon, A.; Kacharava, A.K.; Menteshashvili, Z.P.; Nioradze, M.S.; Salukvadze, Z.R.; Sobczak, T.; Stepaniak, J.

1993-01-01

4 He-p collisions at two values of 4 He momenta 8.6 GeV/c and 13.6 GeV/c as well as the 3 He-p collisions at 13.5 GeV/c have been studied using the one-meter JINR hydrogen bubble chamber. Total, elastic, topological and reaction cross sections have been measured. The cross sections have been determined on a sample of minimum biased events. (orig.)

SPHERE DAQ and off-line systems: implementation based on the qdpb system

International Nuclear Information System (INIS)

Isupov, A.Yu.

2003-01-01

Design of the on-line data acquisition (DAQ) system for the SPHERE setup (LHE, JINR) is described. SPHERE DAQ is based on the qdpb (Data Processing with Branchpoints) system and configurable experimental data and CAMAC hardware representations. Implementation of the DAQ and off-line program code, depending on the SPHERE setup's hardware layout and experimental data contents, is explained as well as software modules specific for such implementation

Polarized neutron spectrometer

International Nuclear Information System (INIS)

Abov, Yu.G.; Novitskij, V.V.; Alfimenkov, V.P.; Galinskij, E.M.; Mareev, Yu.D.; Pikel'ner, L.B.; Chernikov, A.N.; Lason', L.; Tsulaya, V.M.; Tsulaya, M.I.

2000-01-01

The polarized neutron spectrometer, intended for studying the interaction of polarized neutrons with nuclei and condensed media in the area of energies from thermal up to several electron-volt, is developed at the IBR-2 reactor (JINR, Dubna). Diffraction on the Co(92%)-Fe(8%) magnetized monocrystals is used for the neutron polarization and polarization analysis. The neutron polarization within the whole energy range equals ∼ 95% [ru

Irradiation tests of readout chain components of the ATLAS liquid argon calorimeters

CERN Document Server

Leroy, C; Golikov, V; Golubyh, S M; Kukhtin, V; Kulagin, E; Luschikov, V; Minashkin, V F; Shalyugin, A N

1999-01-01

Various readout chain components of the ATLAS liquid argon calorimeters have been exposed to high neutron fluences and $gamma$-doses at the irradiation test facility of the IBR-2 reactor of JINR, Dubna. Results of the capacitance and impedance measurements of coaxial cables are presented. Results of peeling tests of PC board samples (kapton and copper strips) as a measure of the bonding agent irradiation hardness are also reported.

Analytical investigations at the IBR-2 reactor in Dubna

International Nuclear Information System (INIS)

Frontas'eva, M.V.; Pavlov, S.S.

2000-01-01

Experience in applying activation analysis with epithermal neutrons to environmental studies at the IBR-2 pulsed fast reactor in Dubna is reviewed. The principal units of the pneumatic system REGATA are described as well as the main present-day parameters of the irradiation channels. Examples from two challenging areas: analysis of airborne particulate matter and analysis of the biomonitors of atmospheric deposition, where the feasibility of ENAA related to non-nuclear multi-element techniques has been shown, are given. ENAA is presently being used in several projects carried out at FLNP JINR that involve the analysis of aerosol filters. For these studies, instrumental neutron activation analysis cannot feasibly be replaced by any non-nuclear analytical technique at the present state of art due to the fact that the total mass of the aerosol collected on filter samples is often rather small. This favours direct instrumental techniques rather than those depending on dissolving the sample prior to analysis. The dominant part of air pollution studies at FLNP JINR is based on the use of the moss biomonitoring technique resulting in a final product-maps of the atmospheric deposition of heavy metals, rare-earths, actinides (U and Th), etc., constructed by the GIS (geographical information system) technology

The identification method of the nuclear fragments in emulsions

International Nuclear Information System (INIS)

Jipa, Alexandru; Ocheseanu, Silvia; Caramarcu, Costin; Calin, Marius; Constantin, Florin; Stan, Emil

2003-01-01

The visualization detectors have been successfully used from the beginning of the study of the relativistic nuclear collisions. One of these detectors used in such experiments is the nuclear emulsion. To increase the speed of the passage from pictures to experimental data different methods and tools have been proposed during the time. For identifying the nuclear fragments obtained in the relativistic radioactive beams multiple layers of nuclear emulsions have been exposed in experiments performed at the Synchrophasotron from the JINR Dubna (BECQUEREL Collaboration). The nuclear fragments have been identified using PAVICOM scanning and measuring system. In the present work an identification method based on a real time image processing machine and a reconstruction algorithm based on special conformal transforms is proposed. The results obtained by this method are compared with those obtained using PAVICOM device. Because in this study only pictures have been used, not initial nuclear emulsions, some difficulties in the identification of the nuclear fragments with higher polar angles can appear. Generally, comparable results have been obtained. The authors thank Dr. Pavel Zarubin from JINR Dubna, Laboratory of High Energy Physics, and Dr. Maria Haiduc, Institute of Space Sciences Bucharest-Magurele, for the pictures of the nuclear emulsions exposed in these experiments. (authors)

A facility for liquid-phase radiation experiments on heavy ion beams

Energy Technology Data Exchange (ETDEWEB)

Stuglik, Z; Zvara, I; Yakushev, A B; Timokhin, S N [Flerov Lab. of Nuclear Reactions, Dubna (Russian Federation). Joint Inst. for Nuclear Research

1994-05-01

The facility for liquid-phase radiation experiments installed on the beam line of the U-400 cyclotron in the Flerov Laboratory of Nuclear Reactions, JINR, Dubna, is described. The accelerator provides intermediate energy (some 10 MeV/nucleon) beams of ions ranging from Li to Xe. Preliminary results on the radiolysis of the Fricke solution and malachite green in ethanol by {sup 11}B, {sup 24}Mg and {sup 40}Ca ions are presented. (author).

DUBNA-GRAN SASSO: Satellite computer link

International Nuclear Information System (INIS)

Anon.

1994-01-01

In April a 64 kbit/s computer communication link was set up between the Joint Institute for Nuclear Research (JINR), Dubna (Russia) and Gran Sasso (Italy) Laboratories via nearby ground satellite stations using the INTELSAT V satellite. Previously the international community of Dubna's experimentalists and theorists (high energy physics, condensed matter physics, low energy nuclear and neutron physics, accelerator and applied nuclear physics) had no effective computer links with scientific centres worldwide

CDL as a language for implementation systems in scientific environment

International Nuclear Information System (INIS)

Marinescu, D.C.

1977-01-01

The special language is characterized which is convenient for system program description; compilers, editors, monitors, supervisors, etc. The definition for its basic syntactical constructions and some notes about the possible usage are described. The version of the compiler for this language has been implemented by the author for the CDC-6500 at JINR, and this report contains the description for the access to this compiler and some possibilities of using this language on different computers

Resonance spin memory in low-energy gamma-ray spectra from Sb, Tb, Ho and Ta odd-odd compound nuclei

International Nuclear Information System (INIS)

Olejniczak, U.; Gundorin, N.A.; Pikelner, L.B.; Serov, D.G.; Przytula, M.

2002-01-01

The low-energy gamma-ray spectra from neutron resonance capture with natural samples of Sb, Tb, Ho and Ta were measured using a HPGe detector at the IBR-30 pulsed reactor (JINR, Dubna). The resonance spin memory effect in the spectra from the odd-odd compound nuclei of 122 Sb, 160 Tb and 166 Ho was found to be quite distinct. For the 182 Ta compound nucleus it proved to be rather weak

The study of initial conditions in collisions of light, intermediate and heavy nuclei

Directory of Open Access Journals (Sweden)

Loctionov A.A.

2017-01-01

Full Text Available The system size dependence for multiparticle processes has been recognized in both cosmic ray (“Stratosphere” collaboration and at accelerator (“EMU” collaboration experiments. The strong enhancement in multiplicity fluctuations for the most central light-light – (C, O, Ne + (C/N/O – collisions has been revealed at JINR-AGS-SPS energies. The sharp difference of light nuclear interactions are interpreted as the sign of intrinsic alpha-clustering in light nuclei.

La science rapproche les peuples

CERN Multimedia

CERN Press Office. Geneva

1999-01-01

On Monday 3 May 1999 at 5 p.m. Ambassador Vassily Sidorov, Permanent Representative of the Russian Federation to the United Nations, together with the Director General of the European Laboratory for Particle Physics (CERN*)) Prof. Luciano Maiani, and the Director of the Joint Institute for Nuclear Research (JINR**) in Dubna, Russia, Prof. Vladimir Kadyshevsky will inaugurate the exhibition "Science Bringing Nations Together" in the Pas Perdus Hall of the Palais des Nations, Geneva.

CDL as a language for implementation systems in scientific environment

International Nuclear Information System (INIS)

Marinescu, D.C.

1977-01-01

The special language is characterized which is convenient for system program description: translators, aditors, monitors, supervisors, etc. The definition for its basic syntactical constructions and some notes about the possible usage are described. The version of the translator for this language has been implemented by the author for CDC-6500 at JINR, and this report contains the description for the access to this translator and some possibilities of using this language on different computers. (Author)

Process of a cyclotron modeling with SNOP program

International Nuclear Information System (INIS)

Smirnov, V.L.

2015-01-01

The description of the SNOP program developed in JINR and intended for numerical modeling of a beam dynamics in accelerating setups of cyclotron type is presented. The main methods of work with program components, and also stages of numerical modeling of a cyclotron, the analysis of the main characteristics of the accelerated bunch by means of the SNOP are given. The explanation of some algorithms and procedures used in the program is given. [ru

20 December 2011 - Georgian Minister of Education and Science Georgia D.Shashkini signing an agreement and the guest book with CERN Director- General R. Heuer; visiting CMS underground area with Technical Coordinator A. Ball;in the ATLAS underground area with Former Collaboration Spokesperson P. Jenni, and thoughout accompanied by Advisers T. Kurtyka and R. Voss

CERN Multimedia

VMO Team

2011-01-01

The minister of education and science, Dimitri Shashkini, visited CERN to sign an agreement on behalf of Georgia. The signature by the minister reflects both Georgia’s interest in expanding its co-operation with CERN and the new responsibility of the ministry of education and science for funding scientific activities. The agreement will provide enhanced participation of Georgian scientists in CERN’s projects, either directly or through Georgia’s membership in JINR.

Study of deep subcritical electronuclear systems and feasibility of their application for energy production and radioactive waste transmutation

International Nuclear Information System (INIS)

Adam, J.; Baldin, A.; Vladimirova, N.

2010-01-01

Physical substantiation for investigation of new schemes of electronuclear power production and transmutation of long-lived radioactive wastes based on nuclear relativistic technologies is presented. 'E and T RAW' ('Energy and Transmutation of Radioactive Wastes') is aimed at complex study of interaction of relativistic beams of the Nuclotron-M with energies up to 10 GeV in quasi-infinite targets. Feasibility of application of natural/depleted uranium or thorium without the use of uranium-235, as well as utilization of spent fuel elements of atomic power plants is demonstrated based on analysis of results of known experiments, numerical, and theoretical works. The 'E and T RAW' project will provide fundamentally new data and numerical methods necessary for design of demonstration experimental-industrial setups based on the proposed scheme

Simulations in the Analysis of Experimental Data Measured by BM@N Drift Chambers

Science.gov (United States)

Fedorišin, Ján

2018-02-01

The drift chambers (DCH's) are an important part of the tracking system of the BM@N experiment designed to study the production of baryonic matter at the Nuclotron energies. The method of particle hit and track reconstruction in the drift chambers has been already proposed and tested on the BM@N deuteron beam data. In this study the DCH's are first locally and globally aligned, and subsequently the consistency of the track reconstruction chain is tested by two methods. The first one is based on the backward extrapolation of the DCH reconstructed deuteron beam to a position where its deflection in the BM@N magnetic field begins. The second method reconstructs the deuteron beam momentum through its deflection angle. Both methods confirm correctness of the track reconstruction algorithm.

The proton dynamics of ethylene glycol

CERN Document Server

Novikov, A G; Sobolev, O V

2002-01-01

The results of inelastic neutron scattering experiments on ethylene glycol at T=300 K, T=348 K and T=393 K by using the 'direct-geometry' double time-of-flight neutron-scattering spectrometer DIN-2PI (Frank Laboratory of Neutron Physics, JINR, Dubna) are presented. The quasi-elastic and inelastic components of the neutron scattering have been considered. The diffusion characteristics and generalized frequency distributions for protons of ethylene glycol molecules were obtained from the neutron-scattering spectra. (orig.)

1994 European school of high-energy physics. Proceedings

Energy Technology Data Exchange (ETDEWEB)

Ellis, N [ed.; Gavela, B [ed.

1995-06-30

The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These Proceedings contain lectures on field theory, the Standard Model, physics beyond the Standard Model, Quantum Chromodynamics and CP violation, as well as reports on the search for gravitational waves, stellar death and accounts of particle physics at CERN and JINR. Two local subjects are also treated: Pompeii and Mount Vesuvius. (orig.).

Visit to the Russian Production and Assembly Sites in March 2000 (photos obtained from MPI)

CERN Multimedia

2000-01-01

Photo1 - EST electrode production at LPI. Photo2 - EST electrode production at LPI. Photo3 - EST electrode production at LPI. Photo4 - Cold test of EST electrodes at LPI. Photo5 - Cold test of EST electrodes at LPI. Photo6 - The device for cleaning honeycomb mats at JINR. Photo7 - Module assembly at IHEP. Photo8 - Module assembly at IHEP. Photo9 - Module assembly at IHEP. Photo10 - Transport cases for "Molniya" modules (former bomb cases)

Possibility of some radionuclides production using high energy electron Bremsstrahlung

International Nuclear Information System (INIS)

Balzhinnyam, N.; Belov, A.G.; Gehrbish, Sh; Maslov, O.D.; Shvetsov, V.N.; Ganbold, G.

2008-01-01

The method of some radionuclides production using high energy Bremsstrahlung of electron accelerators and determination of photonuclear reaction yield and specific activities for some radionuclides is described. Photonuclear reaction yield and specific activities for some radionuclides are determined for 117m Sn, 111 In and 195m Pt. Based on the experimental data obtained at low energy (E e- e- = 75 MeV) of the IREN facility (FLNR, JINR) at irradiation of high purity platinum and tin metals

Introduction to gauge theories

International Nuclear Information System (INIS)

Okun, L.B.

1984-01-01

These lecture notes contain the text of five lectures and a Supplement. The lectures were given at the JINR-CERN School of Physics, Tabor, Czechoslovakia, 5-18 June 1983. The subgect of the lecinvariancetures: gauge of electromagnetic and weak interactions, higgs and supersymmetric particles. The Supplement contains reprints (or excerpts) of some classical papers on gauge invariance by V. Fock, F. London, O. Klein and H. Weyl, in which the concept of gauge invariance was introduced and developed

An automation of physics research on base of open standards

International Nuclear Information System (INIS)

Smirnov, V.A.

1997-01-01

A wide range of problems is considered concerning an automation of Laboratory of High Energies, JINR set-ups oriented to carry out the experimental researches in high energy and relativistic nuclear physics. Electronics of discussed automation systems is performed in open standards. Main peculiarities in the creation process of automation tools for experimental set-ups, stands and accelerators are shown. Some possibilities to build some accelerator control subsystems on base of industrial automation methods and techniques are discussed

Elemental-composition analysis by the measurement of characteristic X-ray radiation excited by the 1-3.5 MeV proton beam

International Nuclear Information System (INIS)

Braziewicz, E.; Braziewicz, J.; Lyu Zaj Ik; Osetinskij, G.M.; Purehv, A.

1981-01-01

A method is reported for the determination of elemental composition of thin and thick targets from biological, geological and semiconducting materials. The composition is investigated by measuring the characteristic X-ray radiation after the targets were excited by a beam of protons from the electrostatic accelerator (JINR, Dubna). The accuracy of determination for thin targets was within the interval 3-5x10 -9 g/g, for thick targets - 5x10 -7 g/g [ru

1994 European school of high-energy physics. Proceedings

International Nuclear Information System (INIS)

Ellis, N.; Gavela, B.

1995-01-01

The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These Proceedings contain lectures on field theory, the Standard Model, physics beyond the Standard Model, Quantum Chromodynamics and CP violation, as well as reports on the search for gravitational waves, stellar death and accounts of particle physics at CERN and JINR. Two local subjects are also treated: Pompeii and Mount Vesuvius. (orig.)

NAA for applied investigations at FLNP JINR. Present and future

International Nuclear Information System (INIS)

Frontasyeva, M.V.; Pavlov, S.S.; Shvetsov, V.N.

2010-01-01

Experience in applying conventional and epithermal neutron activation analysis for some challenging areas of life sciences and material science is reviewed. For more than 30 years of its operation the radioanalytical complex REGATA at the IBR-2 reactor in Dubna has become a source of analytical data for the environmental studies, marine geology, biotechnology and medicine, technological process of diamond and boron nitride synthesis, archaeology, nanomaterials, etc. In spite of competing non-nuclear analytical techniques (AAS, ICP-ES, ICP-MS, etc.), the reactor neutron activation analysis (NAA) as a primary (ratio) method continues to be the most powerful multielement analytical technique providing quantification of trace elements at ultralow levels. Combined with modern statistical data treatment of large arrays of data, GIS (geographic information system) technologies, electron scanning microscopy, tomography, and others, NAA serves to obtain actual, practical results resumed in the review. The perspectives of using the upgraded reactor IBR-2M for analytical investigations are discussed. (author)

Modelling of an experiment INSS and paraffin moderator at JINR

International Nuclear Information System (INIS)

Goyal, Uttam; Kumawat, Harphool; Kumar, V.; Barashenkov, V.S.

2002-01-01

Intense neutron spallation source (INSS) described elsewhere is studied with paraffin moderator using the Dubna cascade code. For the present study paraffin is assumed having configuration corresponding to C 22 H 46 with density = 0.87 g/cm 3 6 cm thickness of paraffin is coated around the Pb-spallation target of size ΦxL = 8x20 cm 2 and proton beam with E lab = 1 GeV is allowed to collide at the center of the left face

A 15-year forward look at neutron facilities in JINR

International Nuclear Information System (INIS)

Aksenov, V.L.

2017-01-01

The service life of the IBR-2 reactor, one of the leading pulse neutron sources in the world, is expected to end in 2032. Modern trends in sciences where neutrons are used, possible variants of a concept for a new neutron source and its potential position in the world neutron landscape are discussed. The flagship experiments for a new neutron source in the fields of condensed matter research, fundamental and nuclear physics are proposed. [ru

People and things. CERN Courier, Jan-Feb 1985, v. 25(1)

Energy Technology Data Exchange (ETDEWEB)

Anon.

1985-01-15

The article reports on achievements of various people, staff changes and position opportunities within the CERN organization and contains news updates on upcoming or past events. The General Assembly of the International Union of Pure and Applied Physics (IUPAP) met in Trieste in October. At this meeting the People 's Republic of China became a full member of IUPAP. Last year, voting took place for the new Executive Committee of the Division of Particles and Fields of the American Physical Society. A NATO Advanced Study Institute 'New Vistas in Electro-Nuclear Physics' will be held in Banff, Alberta, Canada, from 22 August to 4 September. The 1985 International Symposium on Lepton and Photon Interactions at High Energies is being held in Kyoto from 19-24 August. A conference on Computing in High Energy Physics will be held at Amsterdam, the Netherlands University of Amsterdam and will be devoted mainly to three subjects: networking, embedded systems and vector and parallel processing. The 1985 CERN/Joint Institute for Nuclear Research (JINR, Dubna, USSR) School of Physics, the ninth in the series, will be held from 1-14 September at Urbino, Italy. The basic aim of these schools is to teach various aspects of high energy physics, especially theoretical, to young experimentalists drawn mainly from CERN and JINR Member States.

Monitoring the heavy metal atmospheric deposition in Romania using the neutron activation analysis of bio-indicators

International Nuclear Information System (INIS)

Lucaciu, Adriana

1997-01-01

This research is the direct result of a protocol between NIPNE-HH Bucharest, Romania and JINR-Dubna, Russia on one side, and NIPNE-HH Bucharest, Romania and the University of Trondheim, Norway on the other side. Since the summer of 1995, a systematic sampling of bio-indicators has been carried out. The bio-indicators are represented by three species of bryophytes with an endemic development in the Romanian area: Hylocomium splendens, Hypnum cupresiforme and Pleurozium schreberi. A large area of 45,000 km 2 , including the Carpathian Arch between the Olt River Gorge (Southern Carpathian Mountains) and the northern Romanian border (Eastern Carpathian Mountains) was covered. Some of the samples were prepared in the laboratory and analyzed by nuclear analysis methods of a high sensitivity and accuracy i.e., neutron activation analysis and atomic absorption spectrometry. Other samples are to be prepared and analyzed. The results will be shown as distribution maps for heavy metal concentrations in the studied area. The analysis were carried out at NIPNE-HH-Bucharest, JINR-Dubna and Trondheim University. Part of the results have already been included in the European Atlas of the Heavy Metal Atmospheric Depositions, published by the Northern Countries Council. The distribution maps of atmospheric depositions in Romania will also be included in the above mentioned Atlas. (author)

People and things. CERN Courier, Jan-Feb 1985, v. 25(1)

International Nuclear Information System (INIS)

Anon.

1985-01-01

The article reports on achievements of various people, staff changes and position opportunities within the CERN organization and contains news updates on upcoming or past events. The General Assembly of the International Union of Pure and Applied Physics (IUPAP) met in Trieste in October. At this meeting the People 's Republic of China became a full member of IUPAP. Last year, voting took place for the new Executive Committee of the Division of Particles and Fields of the American Physical Society. A NATO Advanced Study Institute 'New Vistas in Electro-Nuclear Physics' will be held in Banff, Alberta, Canada, from 22 August to 4 September. The 1985 International Symposium on Lepton and Photon Interactions at High Energies is being held in Kyoto from 19-24 August. A conference on Computing in High Energy Physics will be held at Amsterdam, the Netherlands University of Amsterdam and will be devoted mainly to three subjects: networking, embedded systems and vector and parallel processing. The 1985 CERN/Joint Institute for Nuclear Research (JINR, Dubna, USSR) School of Physics, the ninth in the series, will be held from 1-14 September at Urbino, Italy. The basic aim of these schools is to teach various aspects of high energy physics, especially theoretical, to young experimentalists drawn mainly from CERN and JINR Member States

The hypertext information system on pulsed neutron sources and scientific investigations based on these sources

Energy Technology Data Exchange (ETDEWEB)

Litvinenko, E I; Astakhov, Yu A [Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation); Akishina, E P [Moscow State Engineering Physics Institute (Technical University), Moscow (Russian Federation); Semenov, R N; Smol` kov, I S [International University ` Dubna` , Dubna (Russian Federation)

1998-10-01

The work on the creation of the hypertext information system has been performed on the basis of the web-server of the Frank Laboratory of Neutron Physics, JINR. The initial project proposed the creation of HTML information resources and did not consider the usage of any database for the information management. During the project implementation it became obvious that the system should have well defined structured informational model and it might be helpful to imply the relational database as a part of the system. The ORACLE server at the Laboratory of Computing Techniques and Automation (LCTA) of the JINR has been used for this task. Now we have a set of ORACLE tables designed using CASE tools for the informational model of the system, structured information about neutron sources, neutron instruments, printed publications and URL addresses. We have also the web interface to these tables using free ware gateway ORALINK installed on our Pentium PC with Windows NT and some tools to administer database and view pictures stored in the tables. We took into account NeXuS specifications while tried to design the informational model of the system, and we continue to work on its creation 15 refs., 2 figs., 1 tab. Submitted to the Proceedings of the International Workshop on New Opportunities for Better User Group Software (NOBUGS`97), 10-12 Dec 1997, USA

Proceedings of the 3. International Symposium. Dubna. Deuteron-95

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-07-01

Proceedings of the 3. International Symposium. Dubna. Deuteron-95 (July 4-7, 1995) are presented. The main subjects of 50 presented reports are the following ones: the deuteron structure at small distances in hadron-deuteron interactions with polarized and nonpolarized beams and targets; the deuterons structure in lD and {gamma}D interactions; study of the NN interactions; the program of experimental investigations of the deuteron structure at JINR and other centers; prospects of the investigations with polarized {sup 3}He beams.

Gamma-irradiation and neutron effect on DNA-membrane complexes of mammalian cells

International Nuclear Information System (INIS)

Lapidus, I.L.; Nazarov, V.M.; Ehrtsgreber, G.

1984-01-01

The first results of radiobiological investigations in the biophysical channel of the JINR reactor IBR-2 are presented. Sedimentation behaviour of DNA-membrane complexes has been studied at irradiation of the Chinese hamster cells (VT9-4) in a wide dose range of 137 Cs γ-irradiation and neutrons. An earlier assumption of the authors on the role of DNA double-strand breaks in changing the relative sedimentation velocity of complexes at irradiation of cells with doses over 50 Gy has been confirmed

Radiation hardness of permanent magnets of NdFeB in high energy neutron fields

International Nuclear Information System (INIS)

Shchegolev, V.Yu.

2003-01-01

Magnetic properties of NdFeB permanent magnet samples were measured before and after irradiation with conditions similar to conditions of DRIBs (phase 1) (FLNR, JINR) facility. Demagnetization of the samples after 8-day irradiation was found to be in the range of 17 to 87 %. Estimation of magnet 'life time' was made in the case of setting up these magnets on ECR ion source of DRIBs (phase 1) facility. Possible reasons of considerable demagnetization of the magnets are discussed. (author)

Radiation Hardness of Permanent Magnets of NdFeB in High Energy Neutrons Field

CERN Document Server

Schegolev, V Yu

2003-01-01

Magnetic properties of NdFeB permanent magnet samples were measured before and after irradiation with conditions similar to conditions of DRIBs (phase 1) (FLNR, JINR) facility. Demagnetization of the samples after 8-day irradiation was found to be in the range of 17 to 87 \\%. Estimation of magnet "life tim" was made in the case of setting up these magnets on ECR ion source of DRIBs (phase 1) facility. Possible reasons of considerable demagnetization of the magnets are discussed.

Radiation hardness of permanent magnets of NdFeB in high energy neutron fields

CERN Document Server

Shchegolev, V Y

2003-01-01

Magnetic properties of NdFeB permanent magnet samples were measured before and after irradiation with conditions similar to conditions of DRIBs (phase 1) (FLNR, JINR) facility. Demagnetization of the samples after 8-day irradiation was found to be in the range of 17 to 87 %. Estimation of magnet 'life time' was made in the case of setting up these magnets on ECR ion source of DRIBs (phase 1) facility. Possible reasons of considerable demagnetization of the magnets are discussed.

International Scientific School of Excellence Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

The Joint Institute has long been called a "Scientific School of Excellence". Many scientists and engineers from the Member States were trained in this school. The careers of many outstanding scientists are associated with it. This role of JINR is determined by its founding principles and by the scientific schools of D.I.Blokhintsev, N.N.Bogolyubov, G.N.Flerov, I.M.Frank, H.Hulubei, L.Infeld, G.Nadzhakov, H.Niewodniczanski, B.M.Pontecorvo, V.I.Veksler and other outstanding physicists.

Reconciling Through Science Exhibition Science Bringing Nations Together

CERN Multimedia

2000-01-01

Over 200 experiments are carried out now with the pulsed neutron reactor IBR-2. They involve physicists, biologists and chemists from the scientific centres of the JINR Member States and other countries. Major contributions are made by the physicists from Germany, Hungary, Poland, and Russia. During a visit to Dubna, Niels Bohr took an interest in a simple idea behind the periodic pulsed reactor and said: "I admire the courage of the people who ventured to build such a remarkable facility!"

The observation of a stable dibaryon

International Nuclear Information System (INIS)

Shakhbazyan, B.A.; Sashin, V.A.; Kecheryan, A.O.; Martynov, A.S.

1989-01-01

V 0 -particle which is unambiguously interpreted as a weak decay of the stable dibaryon value of cross section H→p+Σ - ,Σ→n+π - is observed. Its mass is M H =(2218+-12) MeV c 2 with a standard deviation S=12 MeV/c 2 and the error of the mean σ=2.8 MeV/c 2 . The investigation has been performed at the Laboratory of High energies, JINR. 10 refs.; 1 fig.; 3 tabs

Particles and nuclei, letters

International Nuclear Information System (INIS)

2000-01-01

The present collection of letters from JINR, Dubna, contains six separate records on the DELPHI experiment at LEP, the Fermi-surface dynamics of rotating nuclei, production of large samples of the silica dioxide aerogel in the 37-litre autoclave and test of its optical properties, preliminary radiation resource results on scintillating fibers, a new algorithm for the direct transformation method of time to digital with the high time resolution and development and design of analogue read-out electronics for HADES drift chamber system

Current Experiments in Particle Physics. 1996 Edition.

Energy Technology Data Exchange (ETDEWEB)

Galic, Hrvoje

2003-06-27

This report contains summaries of current and recent experiments in Particle Physics. Included are experiments at BEPC (Beijing), BNL, CEBAF, CERN, CESR, DESY, FNAL, Frascati, ITEP (Moscow), JINR (Dubna), KEK, LAMPF, Novosibirsk, PNPI (St. Petersburg), PSI, Saclay, Serpukhov, SLAC, and TRIUMF, and also several proton decay and solar neutrino experiments. Excluded are experiments that finished taking data before 1991. Instructions are given for the World Wide Web (WWW) searching of the computer database (maintained under the SLAC-SPIRES system) that contains the summaries.

Current experiments in particle physics - particle data group

Energy Technology Data Exchange (ETDEWEB)

Galic, H. [Stanford Univ., CA (United States). Stanford Linear Accelerator Center; Lehar, F. [Centre d`Etudes Nucleaires de Saclay, Gif-sur-Yvette (France); Kettle, P.R. [Paul Scherrer Institute, Villigen (Switzerland)] [and others

1996-09-01

This report contains summaries of current and recent experiments in Particle Physics. Included are experiments at BEPC (Beijing), BNL, CEBAF, CERN, CESR, DESY, FNAL, Frascati, ITEP (Moscow), JINR (Dubna), KEK, LAMPF, Novosibirsk, PNPI (St. Petersburg), PSI, Saclay, Serpukhov, SLAC, and TRIUMF, and also several proton decay and solar neutrino experiments. Excluded are experiments that finished taking data before 1991. Instructions are given for the World Wide Web (WWW) searching of the computer database (maintained under the SLAC-SPIRES system) that contains the summaries.

Collection of scientific papers in collaboration with Joint Institute for Nuclear Research, Dubna, USSR and Central Research Institute for Physics, Budapest, Hungary Vol. 6

International Nuclear Information System (INIS)

Zhidkov, E.P.; Lobanov, Yu.Yu.; Nemeth, G.

1989-11-01

Papers of collaboration of JINR, Dubna and CRIP, Budapest, are presented in the field of algorithms and computer programs for solution of physical problems. The topics include computer evaluation and calculation of functional integrals and Pade approximants, occurring in theoretical particle physics, field theory and statistical physics, error estimations for approximate solutions of quasilinear integrodifferential evolution equations, overview of protocol testing, improved random number generation methods and computer simulation methods in molecule physics. Computer codes are also presented. (D.G.)

Current experiments in particle physics - particle data group

International Nuclear Information System (INIS)

Galic, H.; Kettle, P.R.

1996-09-01

This report contains summaries of current and recent experiments in Particle Physics. Included are experiments at BEPC (Beijing), BNL, CEBAF, CERN, CESR, DESY, FNAL, Frascati, ITEP (Moscow), JINR (Dubna), KEK, LAMPF, Novosibirsk, PNPI (St. Petersburg), PSI, Saclay, Serpukhov, SLAC, and TRIUMF, and also several proton decay and solar neutrino experiments. Excluded are experiments that finished taking data before 1991. Instructions are given for the World Wide Web (WWW) searching of the computer database (maintained under the SLAC-SPIRES system) that contains the summaries

JAS'2000

CERN Multimedia

2000-01-01

Are you interested in beam dynamics? Do you work on the LHC injectors or CLIC or maybe feasibility studies fornew machines? Then this is for youJAS'2000: Joint CERN-Japan-JINR-Russia-US SchoolFrontiers of Accelerator Technology: High Quality Beams to be held on a river boat between St. Petersburg and Moscow 1 to 14 July 2000. For further information see eitherhttp://schools.web.cern.ch/Schools/CAS/ orhttp://www.indiana.edu/~uspas/programs/js/jas2000.html

New results of Δσ L( np) at high energies

Science.gov (United States)

Sharov, V. I.; Adiasevich, B. P.; Anischenko, N. G.; Antonenko, V. G.; Averichev, S. A.; Azhgirey, L. S.; Bartenev, V. D.; Bazhanov, N. A.; Belyaev, A. A.; Blinov, N. A.; Borisov, N. S.; Borzakov, S. B.; Borzunov, Yu. T.; Bushuev, Yu. P.; Chernenko, L. P.; Chernykh, E. V.; Chumakov, V. F.; Dolgh, S. A.; Fedorov, A. N.; Fimushkin, V. V.; Finger, M.; Finger, M.; Golovanov, L. B.; Gurevich, G. M.; Janata, A.; Kirillov, A. D.; Kolomiets, V. G.; Komogorov, E. V.; Kopylov, S. A.; Kovalenko, A. D.; Kovalev, A. I.; Krasnov, V. A.; Krstonoshich, P.; Kuzmin, E. S.; Ladygin, V. P.; Lazarev, A. B.; Lehar, F.; de Lesquen, A.; Liburg, M. Yu.; Livanov, A. N.; Lukhanin, A. A.; Maniakov, P. K.; Matafonov, V. N.; Matyushevsky, E. A.; Moroz, V. D.; Morozov, A. A.; Neganov, A. B.; Nikolaevsky, G. P.; Nomofilov, A. A.; Panteleev, Tz.; Pilipenko, Yu. K.; Pisarev, I. L.; Plis, Yu. A.; Polunin, Yu. P.; Prokofiev, A. N.; Prytkov, V. Yu.; Rukoyatkin, P. A.; Schedrov, V. A.; Schevelev, O. N.; Shilov, S. N.; Shishov, Yu. A.; Shutov, V. B.; Slunečka, M.; Slunečková, V.; Starikov, A. Yu.; Stoletov, G. D.; Strunov, L. N.; Svetov, A. L.; Usov, Yu. A.; Vasiliev, T.; Volkov, V. I.; Vorobiev, E. I.; Yudin, I. P.; Zaitsev, I. V.; Zhdanov, A. A.; Zhmyrov, V. N.

2002-03-01

Preliminary results of the Δσ L( np) at 1.4, 1.7, 1.9 and 2.0 GeV are presented. They were obtained during the two data-taking runs at the JINR Dubna Synchrophasotron in 2001 and complete the existing data above 1.1 GeV. The data analysis is in progress. The aim of the present studies is to determine the imaginary and real parts of the np spin-dependent forward scattering amplitudes over this energy range.

The discovery of resonances in multibaryon systems

International Nuclear Information System (INIS)

Shahbazian, B.A.

1978-01-01

The properties of multibaryon resonances discovered in the collisions of fast neutrons and pions minus with the C 12 nuclei at 7.0 and 4.0 GeV/c momenta, respectively, in the JINR propane bubble chamber have been investigated. It has been shown that due to the hypercharge selection rule (Y<=1) found earlier multibaryon resonances are ultra-high density superstrange objects. The hypothesis has been brought up: the central regions of galaxies and quasars up to certain densities are huge multibaryon or even multihyperon resonances

Radiation sources, radiation environment and risk level at Dubna

International Nuclear Information System (INIS)

Komochkov, M.M.

1991-01-01

The overall information about ionizing radiation sources, which form radiation environment and risk at Dubna, is introduced. Systematization of the measurement results is performed on the basis of the effective dose and losses of life expectancy. The contribution of different sources to total harm of Dubna inhabitants has been revealed. JINR sources carry in ∼ 4% from the total effective dose of natural and medicine radiation sources; the harm from them is much less than the harm from cigarette smoking. 18 refs.; 2 tabs

Study on neutron interactions with protons and carbon nuclei at p=4.2 GeV/c

International Nuclear Information System (INIS)

Bekmirzaev, R.N.; Muminov, M.M.; Sultanov, M.U.; Grishina, O.V.; Dolejsi, J.; Tas, P.; Trka, Z.

1988-01-01

The production of neutrons with p=4.2 GeV/c in d(C 3 H 8 ) collisions and their interaction with proton and carbon nuclei are studied. The experimental material has been obtained using the 2m propane bubble chamber irradiated by deuterons with p=4.2 GeV/c per nucleon at the Dubna synchrophasotron, JINR. The data on multiplicity and momentum characteristics of secondary particles in np and nC interactions compared with the calculations on the LUND model are obtained

Helmholtz international Summer school quantum field theory at the limits. From strong fields to heavy quarks (HQ 2016). Proceedings

International Nuclear Information System (INIS)

Ali, Ahmed; Blaschke, David; Issadykov, Aidos; Ivanov, Mikhail

2017-04-01

The Helmholtz International Summer School (HISS) entitled ''Quantum Field Theory at the Limits: from Strong Fields to Heavy Quarks (SF→HQ)'', was held in the period July 18-30, 2016 at the Bogolyubov Laboratory of Theoretical Physics (BLTP) of the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, as part of the activities of the Dubna International Advanced School of Theoretical Physics (DIAS-TH). It was co-organized by Ahmed Ali (DESY Hamburg), David Blaschke (JINR Dubna, MEPhI and Univ. Wroclaw), Holger Gies (HI Jena), and Mikhail Ivanov (JINR Dubna), and was attended by 82 participants (faculty+students), not counting the JINR physicists who attended some lectures as non-registered participants. The school (SF→HQ) continued the workshops and schools of the HISS series held earlier in Dubna (1993, 1996, 2000, 2005, 2008, 2013), Bad Honnef (1994) and Rostock (1997). The scientific program of the school consisted of five regular (one-hour long) lectures in the morning and afternoon sessions, with typically two contributed talks given by younger participants (students and postdocs), each half-hour long, in the late afternoons. Altogether, we had sixty lectures by the faculty and participants. In addition, black-board exercises were held in the post-lunch periods on selected aspects of strong fields and field theory. The HISS series of schools has played an important role in bringing together an international faculty and young physicists (Ph.D. and postdocs), mostly from Russia and Germany, but increasingly also from other countries, including those affiliated to JINR Dubna. They participate in two-week long intense scientific discourse, mainly dedicated lectures on selected topics covering the foundation and the frontiers of high energy physics and cosmology. The novelty of this year's school was its bifocal interest, which brought together two different physical science communities - particle and laser physicists. There were

Helmholtz international Summer school quantum field theory at the limits. From strong fields to heavy quarks (HQ 2016). Proceedings

Energy Technology Data Exchange (ETDEWEB)

Ali, Ahmed; Blaschke, David; Issadykov, Aidos; Ivanov, Mikhail (eds.)

2017-04-15

The Helmholtz International Summer School (HISS) entitled ''Quantum Field Theory at the Limits: from Strong Fields to Heavy Quarks (SF→HQ)'', was held in the period July 18-30, 2016 at the Bogolyubov Laboratory of Theoretical Physics (BLTP) of the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, as part of the activities of the Dubna International Advanced School of Theoretical Physics (DIAS-TH). It was co-organized by Ahmed Ali (DESY Hamburg), David Blaschke (JINR Dubna, MEPhI and Univ. Wroclaw), Holger Gies (HI Jena), and Mikhail Ivanov (JINR Dubna), and was attended by 82 participants (faculty+students), not counting the JINR physicists who attended some lectures as non-registered participants. The school (SF→HQ) continued the workshops and schools of the HISS series held earlier in Dubna (1993, 1996, 2000, 2005, 2008, 2013), Bad Honnef (1994) and Rostock (1997). The scientific program of the school consisted of five regular (one-hour long) lectures in the morning and afternoon sessions, with typically two contributed talks given by younger participants (students and postdocs), each half-hour long, in the late afternoons. Altogether, we had sixty lectures by the faculty and participants. In addition, black-board exercises were held in the post-lunch periods on selected aspects of strong fields and field theory. The HISS series of schools has played an important role in bringing together an international faculty and young physicists (Ph.D. and postdocs), mostly from Russia and Germany, but increasingly also from other countries, including those affiliated to JINR Dubna. They participate in two-week long intense scientific discourse, mainly dedicated lectures on selected topics covering the foundation and the frontiers of high energy physics and cosmology. The novelty of this year's school was its bifocal interest, which brought together two different physical science communities - particle and laser physicists. There were

Transmutation experiments ion I-129, La-139 and Np-237 using the Nuclotron accelerator

Czech Academy of Sciences Publication Activity Database

Westmeier, W.; Brandt, B. A.; Langrock, E. J.; Odoj, R.; Adam, Jindřich; Bradnova, V.; Golovatyuk, VM.; Krasnov, VA.; Krivopustov, M. I.; Pronskikh, V. S.; Sosnin, A. N.; Tsoupko-Sitnikov, V. M.; Vladimirova, NM.; Hashemi-Nezhad, R. S.; Zamani-Valasiadou, M.

2005-01-01

Roč. 93, č. 2 (2005), s. 65-73 ISSN 0033-8230 R&D Projects: GA MŠk(CZ) 1P04LA213 Keywords : transmutation * relativistic proton beam * moderator Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders Impact factor: 0.846, year: 2005

Upgrading of the LGD cluster at JINR to support DLNP experiments

Science.gov (United States)

Bednyakov, I. V.; Dolbilov, A. G.; Ivanov, Yu. P.

2017-01-01

Since its construction in 2005, the Computing Cluster of the Dzhelepov Laboratory of Nuclear Problems has been mainly used to perform calculations (data analysis, simulation, etc.) for various scientific collaborations in which DLNP scientists take an active part. The Cluster also serves to train specialists. Much has changed in the past decades, and the necessity has arisen to upgrade the cluster, increasing its power and replacing the outdated equipment to maintain its reliability and modernity. In this work we describe the experience of performing this upgrading, which can be helpful for system administrators to put new equipment for clusters of this type into operation quickly and efficiently.

Molecular genetic researches on the radiation genetics of Drosophila in JINR

International Nuclear Information System (INIS)

Afanas'eva, K.P.; Aleksandrova, M.V.; Aleksandrov, I.D.

2016-01-01

Molecular genetic studies of radiation-induced heritable DNA lesions are carried out by the genetic group of Laboratory of nuclear problem in Joint Institute for Nuclear Research. The first results of molecular analysis of γ –ray- and neutron-induced vestigial mutations using PCR and sequencing will be presented. (authors)

Measurements of LET Spectra of the JINR Phasotron Radiotherapy Proton Beam

Czech Academy of Sciences Publication Activity Database

Kubančák, Ján; Molokanov, A. G.

2013-01-01

Roč. 2013, č. 6 (2013), s. 90-92 ISSN 1562-6016 R&D Projects: GA MŠk LA08002 Institutional support: RVO:61389005 Keywords : LET spectra * proton beam Subject RIV: BO - Biophysics Impact factor: 0.102, year: 2013 http:// vant .kipt.kharkov.ua/ARTICLE/ VANT _2013_6/article_2013_6_90.pdf

Hydrostatic control system for the height position of the JINR synchrotron

International Nuclear Information System (INIS)

Vasyutinskij, I.Yu.; Zinov'ev, L.P.; Karpov, I.I.

1978-01-01

Hydrostatic system with remote read-out is created for a more operative control of height position of synchrocyclotrone electromagnet. 3 hydrostatic heads with electrocontact registration of liquid level position were mounted on every electromagnet quadrant. The heads are placed under the magnet in centers of survey channel of the foundation and are switched on in series. Teh schemes of the main system units are given. The order of assembling and adjustment of hydrostatic system elements of the accelerator is described

A facility for liquid-phase radiation experiments on heavy ion beams

Energy Technology Data Exchange (ETDEWEB)

Stuglik, Z; Zvara, I; Yakushev, A B; Timokhin, S N

1993-12-31

The title facility is described, installed on a beam line of the 4-meter U-400 cyclotron in the Flerov Laboratory of Nuclear Reactions, JINR, Dubna. The accelerator provides intermediate energy (some 10 MeV/nucleon) beams of ions from Li to Xe. Preliminary results on the radiolysis of two liquid systems -Fricke solution and malachite green in ethanol - by {sup 11}B, {sup 24}Mg, and {sup 40}Ca ions are presented. Some experimental problems and uncertainities faced at the quantitative evaluation of the data are discussed. 62 refs.; 5 figs.; 2 tabs.

Particles and nuclei, letters

International Nuclear Information System (INIS)

2001-01-01

The present collection of letters from JINR, Dubna, contains seven separate records on physics from extra dimensions, new physics in the new millennium with GENIUS: double beta decay, dark matter, solar neutrinos, the (μ - , e + ) conversion in nuclei mediated by light Majorana neutrinos, exotic muon-to-positron conversion in nuclei: partial transition sum evaluation by using shell model, solar neutrino problem accounting for self consistent magnetohydrodynamics solution for solar magnetic fields, first neutrino observations from the Sudbury neutrino observatory and status report on BOREXINO and results of the muon-background measurements at CERN

A facility for liquid-phase radiation experiments on heavy ion beams

International Nuclear Information System (INIS)

Stuglik, Z.; Zvara, I.; Yakushev, A.B.; Timokhin, S.N.

1992-01-01

The title facility is described, installed on a beam line of the 4-meter U-400 cyclotron in the Flerov Laboratory of Nuclear Reactions, JINR, Dubna. The accelerator provides intermediate energy (some 10 MeV/nucleon) beams of ions from Li to Xe. Preliminary results on the radiolysis of two liquid systems -Fricke solution and malachite green in ethanol - by 11 B, 24 Mg, and 40 Ca ions are presented. Some experimental problems and uncertainities faced at the quantitative evaluation of the data are discussed. 62 refs.; 5 figs.; 2 tabs

Mathematical investigation of the possibility of a power increase of the subcritical assembly in Dubna (SAD) up to 100 kW

International Nuclear Information System (INIS)

Petrochenkov, S.A.; Shvetsov, V.N.; Polanski, A.

2007-01-01

We present the results of Monte-Carlo modeling of the experimental accelerator-driven electronuclear system composed of the subcritical assembly and DLNP JINR Phasotron. The expected thermal power of the subcritical assembly in Dubna (SAD) is about 30 kW. The possibility of assembly power increase without changes in design and basic elements is considered. The proposed assembly upgrade gives power increase up to 100 kW. It is of importance that proposed upgrade operations can be performed both before and after the run with nominal power and partial fulfillment of a basic experimental program

Joint Institute for Nuclear Research Data Analysis Guide - Berkelium Edition

International Nuclear Information System (INIS)

Henderson, R.A.

2009-01-01

This is a data analysis guide to the JINR system developed by Roger Henderson. It is intended as a complete guide to the data format and the calibration parameters utilized for the analysis of the data. This guide will provide the basic structure of the data files, the description of the individual data items, and the basic equations developed for the calculation of the results. Currently (7/17/2009), calculation of the calibration parameters is not a covered topic. It is intended that this will be covered in a future update

Investigation of total cross sections for reactions induced by {sup 6}He interaction with silicon nuclei at energies between 5 and 50 MeV/A

Energy Technology Data Exchange (ETDEWEB)

Kabdrakhimova, G. D., E-mail: gaukharkd@gmail.com [L.N.Gumilyov Eurasian National University (Kazakhstan); Sobolev, Yu. G.; Kuhtina, I. N. [Joint Institute for Nuclear Research (Russian Federation); Kuterbekov, K. A. [L.N.Gumilyov Eurasian National University (Kazakhstan); Mendibaev, K. O.; Penionzhkevich, Yu. E. [Joint Institute for Nuclear Research (Russian Federation)

2017-01-15

Experimental excitation functions in terms of the total cross sections for {sup 6}He + Si nuclear reactions are analyzed in the energy range between 5 and 50 MeV/A, and a brief survey of the procedures used to obtain experimental data is given. Particular attention is given to describing experiments performed in beams of radioactive nuclei from the accelerators of the Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research (JINR, Dubna). The experimental data in question are analyzed on the basis of a semimicroscopic optical model.

Particles and nuclei, letters

International Nuclear Information System (INIS)

2002-01-01

The present collection of letters from JINR, Dubna, contains seven separate records on kinematic separation and mass analysis of heavy recoiling nuclei, dynamical effects prior to heavy ion fusion, VACTIV-DELPHI graphical dialog based program for the analysis of gamma-ray spectra, irradiation of nuclear emulsions in relativistic beams of 6 He and 3 H nuclei, optical and structural investigations of PLZT x/65/35 (x = 4, 8 %) ferroelectric ceramics irradiated by a high-current pulsed electron beam, the oscillating charge and first evidence for neutrinoless double beta decay

Monitoring of the tensor polarization of high energy deuteron beams; Monitoring tenzornoj polyarizatsii dejtronnykh puchkov vysokoj ehnergii

Energy Technology Data Exchange (ETDEWEB)

Zolin, L S; Litvinenko, A G; Pilipenko, Yu K; Reznikov, S G; Rukoyatkin, P A; Fimushkin, V V

1998-12-01

The method of determining the tensor component of high energy polarized deuteron beams, based on measuring of the tensor analyzing power in the deuteron stripping reaction, is discussed. This method is convenient for monitoring during long time runs on the tensor polarized deuteron beams. The method was tested in the 5-days run at the LHE JINR accelerator with the 3 and 9 GeV/c tensor polarized deuterons. The results made it possible to estimate the beam polarization stability in time 5 refs., 4 figs., 1 tab.

Efficiency evaluation of slow extraction from the synchrotron

International Nuclear Information System (INIS)

Kazarinov, N.Yu.; Mikhajlov, V.A.

1986-01-01

Analytical calculation of slow extraction of the beam out of the JINR synchrotron is made. The formulae for evaluation of the sextupole amplitudes and phases, quadrupole lens gradient range are obtained, the connection with circulated and extracted beam parameters is shown. The formulae for calculating optimal position of the septum-magnet or electrostatic septum are presented. On this basis the formula for estimating the efficiency of beam slow extraction out of the synchrotron is obtained under assumption that in the septum region during the extraction a quasistationary distribution of the beam density occurs

Digital front-end electronics for COMPASS Muon-Wall 1 detector

International Nuclear Information System (INIS)

Alekseev, G.D.; Zhuravlev, N.I.; Maggiora, A.

2005-01-01

The digital front-end electronics for the COMPASS Muon-Wall 1 (CERN) detector is described. The digital card has been designed on the basis of the TDC chip F1. One card includes 6 F1 chips (192 channels), bus arbiter, DAC, power supply distribution, hot-link interface. The total number of the digital cards in the system is 44 housed in 5 euro-crates (6U), the total number of readout channels is 8448. The electronics has been designed by the Dzhelepov Laboratory of Nuclear Problems (JINR) and INFN (Torino, Italy) experts

Determination of the origin of the medieval glass bracelets discovered in Dubna, Moscow Region, Russia, using the neutron activation analysis

International Nuclear Information System (INIS)

Dmitrieva, S.O.; Frontasyeva, M.V.; Dmitriev, A.Yu.; Dmitriev, A.A.

2017-01-01

The work is dedicated to the determination of the origin of archaeological finds from medieval glass using the method of neutron activation analysis (NAA). Among such objects we can discover things not only produced in ancient Russian glassmaking workshops but also imported from Byzantium. The authors substantiate the ancient Russian origin of the medieval glass bracelets of pre-Mongol period, found on the ancient Dubna settlement. The conclusions are based on data on the glass chemical composition obtained as a result of NAA of 10 fragments of bracelets at the IBR-2 reactor, FLNP, JINR.

Charged multiplicity distributions in anti np interactions at 6 GeV/c

International Nuclear Information System (INIS)

Batyunya, B.V.; Boguslavskij, I.B.; Gramenitskij, I.M.

1980-01-01

Inelastic topological anti np cross sections at 6 GeV/c have been determined based on a study of the charged multiplicity distribution in antideuteron-proton collisions at 12 GeV/c. The data were obtained in an exposure of the ''Ludmila'' JINR 2 m hydrogen bubble chamber at the Serpukhov accelerator. In anti np interactions average charged multiplicity and its ratio to dispersion, /D, were found to be 3.32+-0.13 and 1.86+-0.16, respectively. Comparison with anti pn, anti pp and pp data was made

Design and simulation of ion optics for ion sources for production of singly charged ions

Science.gov (United States)

Zelenak, A.; Bogomolov, S. L.

2004-05-01

During the last 2 years different types of the singly charged ion sources were developed for FLNR (JINR) new projects such as Dubna radioactive ion beams, (Phase I and Phase II), the production of the tritium ion beam and the MASHA mass separator. The ion optics simulations for 2.45 GHz electron cyclotron resonance source, rf source, and the plasma ion source were performed. In this article the design and simulation results of the optics of new ion sources are presented. The results of simulation are compared with measurements obtained during the experiments.

Design and simulation of ion optics for ion sources for production of singly charged ions

International Nuclear Information System (INIS)

Zelenak, A.; Bogomolov, S.L.

2004-01-01

During the last 2 years different types of the singly charged ion sources were developed for FLNR (JINR) new projects such as Dubna radioactive ion beams, (Phase I and Phase II), the production of the tritium ion beam and the MASHA mass separator. The ion optics simulations for 2.45 GHz electron cyclotron resonance source, rf source, and the plasma ion source were performed. In this article the design and simulation results of the optics of new ion sources are presented. The results of simulation are compared with measurements obtained during the experiments

Study of Neutron Halo Structure in Interaction of 6He with Nuclei of Photoemulsion

International Nuclear Information System (INIS)

Belovitsky, G.; Konobeevski, E.; Stepanov, A.; Zavarzina, V.; Zuyev, S.; Polukhina, N.; Rusetsky, A.; Starkov, N.; Lukyanov, S.; Sobolev, Yu.

2008-01-01

To investigate the structure of halo of Borromean nuclei, we propose an experimental method of studying quasi-free scattering of proton by the constituents of halo-nuclei in photo emulsion. The experimental study of 6 He + 1 H interaction is performed using 6 He beam of Flerov Laboratory of Nuclear Reactions (JINR, Dubna) at energy of about 10 MeV/u and technique of nuclear photo emulsions. Searching for events of quasi-free scattering and their processing is performed using the PAVICOM-setup at P.N. Lebedev Physical institute

1995 European school of high-energy physics. Proceedings

Energy Technology Data Exchange (ETDEWEB)

Ellis, N; Neubert, M [eds.

1996-06-11

The European School of High-Energy Physics is intended to give young experimentalists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on Field Theory, the Standard Model, Physics beyond the Standard Model, Quantum Chromodynamics and Deep Inelastic Scattering, B-Physics and CP Violation, Neutrino Oscillations, Dark Matter, Experimental Techniques, as well as reports on Heavy Ions and Collider Physics and an account of particle physics at JINR. Two local subjects are also treated: Conditions for Science in Russia, and Search for Heavy Elements. (orig.).

The cryogenic source of slow monochromatic positrons

International Nuclear Information System (INIS)

Meshkov, I.N.; Pavlov, V.N.; Sidorin, A.O.; Yakovenko, S.L.

2008-01-01

The cryogenic source of slow monochromatic positrons based on the 22 Na isotope has been designed and constructed at JINR. Positrons emitted from radioactive source 22 Na have a very broad energy spectrum up to 0.5 MeV. To generate monochromatic beam of slow positrons the solid neon is used as a moderator. The solid neon allows forming slow positron beam of the energy of 1.2 eV at the spectrum width of 1 eV. The efficiency of moderation is 1 % of total positron flux

1995 European school of high-energy physics. Proceedings

International Nuclear Information System (INIS)

Ellis, N.; Neubert, M.

1996-01-01

The European School of High-Energy Physics is intended to give young experimentalists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on Field Theory, the Standard Model, Physics beyond the Standard Model, Quantum Chromodynamics and Deep Inelastic Scattering, B-Physics and CP Violation, Neutrino Oscillations, Dark Matter, Experimental Techniques, as well as reports on Heavy Ions and Collider Physics and an account of particle physics at JINR. Two local subjects are also treated: Conditions for Science in Russia, and Search for Heavy Elements. (orig.)

Fast reconstruction of trajectories of charged muons recorded by the MUCH detector in the CBM experiment

International Nuclear Information System (INIS)

Ablyazimov, T.O.; Ivanov, V.V.

2017-01-01

The CBM experiment is currently being developed in GSI (Darmstadt, Germany) at the FAIR accelerator complex by an international collaboration including JINR. One of the main goals of the experiment is a research of charmonium production process in nucleus-nucleus collisions at high energies. The registration of such decays as J/ψ → μ"+μ"− is planned to be carried out in real time. The current paper presents an algorithm suitable for fast reconstruction of trajectories of charged muons from J/ψ decays recorded by the MUCH detector. [ru

Total desintegration of helium nuclei in 3Hep-interactions at 13.5 GeV/c

International Nuclear Information System (INIS)

Glagolev, V.V.; Lebedev, R.M.; Pestova, G.D.

1988-01-01

The experiment has been carried out on JINR phasotron of LHE by means of 100 cm liquid hydrogen chamber. Total cross section of the reaction of nonmesonic breakup of 3 He nuclei has been determined: σ 3Hep→pppn =(6.73±0.15) mb. Mechanism of this reaction was analysed. It is shown that along with the mechanism of single scattering the interaction of nucleon-spectators (proton and neutron) in the final state is essential which inities their coalescence into deuteron and transition to 3 Hep → dpp channel

Experience gained during 10 years transmutation experiments in Dubna

Science.gov (United States)

Zamani, M.; Fragopoulou, M.; Manolopoulou, M.; Stoulos, S.; Brandt, R.; Westmeier, W.; Krivopustov, M.; Sosnin, A.; Golovatyuk, S.

2006-05-01

Transmutation, the procedure of transforming long-lived radioactive isotopes into stable or short-lived, was proposed for reducing the amount of radioactive waste resulting from technological applications of nuclear fission. The Accelerator Driven Systems (ADS) provide the possibility to generate intense neutron spectrum yielding in an effective transmutation of unwanted isotopes. Such experiments are being carried out for the last 10 years in Synchrophasotron / Nuclotron accelerators at the Veksler-Baldin Laboratory of High Energies of the Joint Institute for Nuclear Research in Dubna, Russia. Thick Pb and Pb-U targets, surrounded by moderators, have been irradiated by protons in the energy range of 0.5-7.4 GeV. Neutron fluence measurements have been performed by different techniques of passive detectors (neutron activation detectors, solid state nuclear track detectors). Transmutation of 129I, 237Np, 239Pu was studied. The results of these experiments are presented and discussed.

New development for the reverse time of flight analysis of spectra measured using Fourier Diffractometer Facilities

CERN Document Server

Maayouf, R M A

2002-01-01

The present work introduces a new design to replace the (Finnish make) reverse time of flight (RTOF) analyzer used for the Fourier diffractometer facilities. The new design applies a data acquisition system, a special interface card and software program installed in a PC computer, to perform the cross-correlation functions between signals received from the chopper-decoder and detector. It has been found from test measurements performed with the Cairo Fourier diffractometer facility (CFDF) and the similar high resolution one at JINR (Dubna-Russia) that the new design can successfully replace the Finnish make RTOF analyzer.

The use of DBMS and document oriented interface in the TPLAN-system

International Nuclear Information System (INIS)

Fernandez, F.N.

1994-01-01

The paper describes the user-friendly input/output interface (DOI) for the TPLAN database management system that includes high quality output in Latex format from databases and retrieves selected information from Latex document (according to a specific grammar that includes a subset of the Latex grammar) to be stored in the databases. The TPLAN system was developed to manage the annual Topical Plan of JINR. It was written in 'C' and DOS Fox Base/Fox Pro for IBM comparable personal computer. It was also proto typed in Visual Basic and Windows Access using standard V B controls. 8 refs.; 7 figs. (author)

On modeling of the neutron in classical physics: a methodical review

International Nuclear Information System (INIS)

Eganova, I.A.; Kallies, W.

2015-01-01

In the given work it is shown that the question about the neutron as a non-elementary particle started recently by B.V. Vasiliev in JINR Communication P3-2014-77 demands to take into consideration the entire system of the logically relevant and based on experiments knowledge which was found by M. Gryzinski in the deterministic atomic physics, and also the two interpretations declared in this communication are refuted: 1) of an electron-like elementary particle in the neutron structure that has no magnetic properties and 2) of the planetary-type model for a neutron with point objects.

Search for the radiative capture reaction d + d -> sup 4 He + gamma from the dd mu muonic molecule state

CERN Document Server

Bogdanova, L N; Eijk, C W E

2002-01-01

A search for the muon catalyzed fusion (MCF) reaction d + d -> sup 4 He + gamma in the dd mu muonic molecule was performed using the experimental MCF installation TRITON and NaI(Tl) detectors for gamma quanta. The high-pressure target filled with deuterium was exposed to the negative muon beam of the JINR phasotron to detect gamma quanta with energy 23.8 MeV. The first experimental estimation for the yield of the radiative deuteron capture from the dd mu state J = 1 was obtained at the level eta subgamma <= 2 x 10 sup - sup 5 per one fusion

Determination of the origin of the medieval glass bracelets discovered in Dubna (Moscow Region, Russia), using the neutron activation analysis

International Nuclear Information System (INIS)

Dmitrieva, S.O.; Frontas'eva, M.V.; Dmitriev, A.Yu.; Dmitriev, A.A.

2016-01-01

The work is dedicated to the determination of the origin of archaeological finds from medieval glass using the method of neutron activation analysis (NAA). Among such objects we can discover things not only produced in ancient Russian glassmaking workshops but also brought from Byzantium. The authors substantiate the ancient Russian origin of the medieval glass bracelets of pre-Mongol period, found on the ancient Dubna settlement. The conclusions are based on the data about the glass chemical composition obtained as a result of NAA of ten fragments of bracelets at the IBR-2 reactor, FLNP, JINR. [ru

Analyzing power of polarized protons interactions with carbon nuclei at 0.71-3.61 GeV

International Nuclear Information System (INIS)

Anoshina, E.V.; Bodyagin, V.A.; Vardanyan, I.N.; Gribushin, A.M.; Ershov, A.A.; Kruglov, N.A.; Sarycheva, L.I.

1997-01-01

For the first time at JINR synchrophasotron an experiment in the polarized proton beam was carried out. Beams of polarized protons with energy T p = 0.71-3.61 GeV, polarization P p ≅ 0.5 and intensity I p ≅ 10 6 particles/spell have been formed, their characteristics were investigated, and a possibility to use those beams as initial for physical and methodical investigations has been shown. The proton-carbon interaction analyzing power at the energies of 1.46 and 3.61 GeV has been measured for two values of the scattering angle. 22 refs., 3 figs

Rotational Invariance of the 2d Spin - Spin Correlation Function

Science.gov (United States)

Pinson, Haru

2012-09-01

At the critical temperature in the 2d Ising model on the square lattice, we establish the rotational invariance of the spin-spin correlation function using the asymptotics of the spin-spin correlation function along special directions (McCoy and Wu in the two dimensional Ising model. Harvard University Press, Cambridge, 1973) and the finite difference Hirota equation for which the spin-spin correlation function is shown to satisfy (Perk in Phys Lett A 79:3-5, 1980; Perk in Proceedings of III international symposium on selected topics in statistical mechanics, Dubna, August 22-26, 1984, JINR, vol II, pp 138-151, 1985).

Contamination of crop vegetation with trace elements from a fertilizer plant. An INAA study

International Nuclear Information System (INIS)

Pantelica, A.; Oprea, C.; Frontasyeva, M.; Georgescu, I.I.; Pincovschi, E.; Catana, L.

2004-01-01

Instrumental neutron activation analysis (INAA) was used to determine various trace elements in crop vegetation (potato, carrot and maize) grown around a phosphate fertilizer plant in Romania. INAA using long-lived radionuclides was applied at NIPNE in Bucharest, and based on short-lived radionuclides at JINR in Dubna. The results for Na, Mg, Cl, K, Ca, Mn, Fe, Zn, As, and Hg were compared with Romanian norms for the alimentary products, as well as with literature data. Concentration ratios to control samples for both soil and crop as well as concentration factors of crop to host soil were assessed. (author)

Particles and nuclei, letters

International Nuclear Information System (INIS)

2002-01-01

The present collection of letters from JINR, Dubna, contains eight separate records on the role of the complanar emission of particles in nuclear interaction for E 0 >10 16 eV detected in the stratosphere, 10 B nucleus fragment yields, nuclear teleportation (proposal for an experiment), invisible 'glue' bosons in model field theory, calculation of the ionization differential effective cross sections in fast ion-atom collisions, interactions of ultracold neutrons near surface of solids, g factors as a probe for high-spin structure of neutron-rich Dy isotopes, search for periodicities in experimental data by the autoregressive model methods

Additive Difference Schemes for Filtration Problems in Multilayer Systems

CERN Document Server

Ayrjan, E A; Pavlush, M; Fedorov, A V

2000-01-01

In the present paper difference schemes for solution of the plane filtration problem in multilayer systems are analyzed within the framework of difference schemes general theory. Attention is paid to splitting the schemes on physical processes of filtration along water-carring layers and vertical motion between layers. Some absolutely stable additive difference schemes are obtained the realization of which needs no software modification. Parallel algorithm connected with the solving of the filtration problem in every water-carring layer on a single processor is constructed. Program realization on the multi-processor system SPP2000 at JINR is discussed.

Numerical generalized vibration density of states evaluation for inelastic neutron scattering in solid matter

CERN Document Server

Kazmianec, V; Aranghel, D

2002-01-01

A computational method for improved evaluation of the generalized vibration density of states (GVDS) is proposed. It is based on Fast Fourier Transform (FPT) technique and gives the possibility for more precise analyses of the neutron double differential scattering cross section. The method was applied to zirconium hydride investigation. The results were presented for ZrH sub 1 sub . sub 6 U sub 0 sub . sub 3 sub 2 sample at various temperatures on time-of-flight (TOF) Spectrometry at IBR-2 reactor of JINR-Dubna and were compared to GVDS values obtained by traditional single-phonon approximation method

International cooperation in peaceful use of nuclear energy

International Nuclear Information System (INIS)

Filatkin, A.P.

1985-01-01

Main forms of international cooperation in peaceful use of nuclear energy are described. IAEA represents the organization called to establish the cooperation. For the purposes of wide nuclear power usage IAEA provides technical assistance to developing countries, conducting of meetings and conferences, accomplishes wide publishing activity and nuclear information exchange with the use of different data bases, including the INIS system, and coordinates the operating group activity through the INTOR program. Cooperation of socialist countries is accomplished in the framework of the CMEA. JINR, intimately connected with scientific organization of other countries including CERN, represents the center of nuclear investigations in socialist countries

Particles and nuclei, letters; Proceedings of the international workshop 'Quantum Physics and Communication'

International Nuclear Information System (INIS)

Ivanov, V.V.

2003-01-01

The present collection of letters from JINR, Dubna, contains ten separate records on the microscopic entropy and nonlocality, conditional density matrix: systems and subsystems in quantum mechanics, physics of quantum computation, flipping qubits, quantum zeno effect for N-level Friedrichs model, universal hybrid quantum processors, formation of the SU(3)-polarization states in atom-quantum electromagnetic field system under condition of the Bose-Einstein condensate existence, periodical sequences (trajectories) of outcomes of atomic state measurement on exit from the micromaser cavity, an algebraic method to solve the Tavis-Cummings problem, quantum teleportation of nuclear matter and its investigation

Mass analyzer ``MASHA'' high temperature target and plasma ion source

Science.gov (United States)

Semchenkov, A. G.; Rassadov, D. N.; Bekhterev, V. V.; Bystrov, V. A.; Chizov, A. Yu.; Dmitriev, S. N.; Efremov, A. A.; Guljaev, A. V.; Kozulin, E. M.; Oganessian, Yu. Ts.; Starodub, G. Ya.; Voskresensky, V. M.; Bogomolov, S. L.; Paschenko, S. V.; Zelenak, A.; Tikhonov, V. I.

2004-05-01

A new separator and mass analyzer of super heavy atoms (MASHA) has been created at the FLNR JINR Dubna to separate and measure masses of nuclei and molecules with precision better than 10-3. First experiments with the FEBIAD plasma ion source have been done and give an efficiency of ionization of up to 20% for Kr with a low flow test leak (6 particle μA). We suppose a magnetic field optimization, using the additional electrode (einzel lens type) in the extracting system, and an improving of the vacuum conditions in order to increase the ion source efficiency.

Mass analyzer 'MASHA' high temperature target and plasma ion source

International Nuclear Information System (INIS)

Semchenkov, A.G.; Rassadov, D.N.; Bekhterev, V.V.; Bystrov, V.A.; Chizov, A.Yu.; Dmitriev, S.N.; Efremov, A.A.; Guljaev, A.V.; Kozulin, E.M.; Oganessian, Yu.Ts.; Starodub, G.Ya.; Voskresensky, V.M.; Bogomolov, S.L.; Paschenko, S.V.; Zelenak, A.; Tikhonov, V.I.

2004-01-01

A new separator and mass analyzer of super heavy atoms (MASHA) has been created at the FLNR JINR Dubna to separate and measure masses of nuclei and molecules with precision better than 10 -3 . First experiments with the FEBIAD plasma ion source have been done and give an efficiency of ionization of up to 20% for Kr with a low flow test leak (6 particle μA). We suppose a magnetic field optimization, using the additional electrode (einzel lens type) in the extracting system, and an improving of the vacuum conditions in order to increase the ion source efficiency

Particles and nuclei, letters

International Nuclear Information System (INIS)

2000-01-01

The present collection of letters from JINR, Dubna, contains eight separate records on quantum field theory and symmetries in nuclear physics, multifractal analysis of AFM images of Nb thin film surfaces, the fast-acting memory for multichannel converters of time to digital, an analysis of the anomalous Cherenkov radiation obtained in the relativistic lead ion beam at CERN SPS, the problem of consistency of the thermal-spike model with experimentally determined electron temperature, ATLAS calorimeter performance for charged pion as well as on collective flow in multifragmentation induced by relativistic helium and carbon ions variation of the coulomb repulsion in multifragmentation

Organization of a joint operation of PC and CAMAC equipment using KK106 crate controller and MULTI interface

International Nuclear Information System (INIS)

Vagov, V.A.; Sirotin, A.P.; Tulaev, A.B.; Tumanov, A.V.

1989-01-01

Hardware and software which permit to provide a joint operation of IBM PC/XT/AT (or compatibles) with CAMAC equipment are described. Wide-spread in the JINR the 106 type interface is used as CAMAC Dataway controller and MULTI interface is used as PC-Bus adapter. MULTI additional on-board module Baby-106 that emulates cut-down UNIBUS for 106 type interface is designed. The means offered allow PC and CAMAC modules to operate jointly both via the program transfer channel and DMA channel. Maximum (hardware) performance is obtained in DMA case. 5 refs.; 1 fig

Determination of microelement distribution in different components of soil-plant system

International Nuclear Information System (INIS)

Luu Viet Hung; Maslov, O.D.; Gustova, M.V.; Trinh Thi Thu My; Phung Khac Nam Ho

2011-01-01

Leaves, stem, and roots of two shrub types: tea (Camellia sinensis), sweet leaf (Sauropus androgynus) and two herb types: vetiver grass (Vetiveria zizanioides L.Nash), maize (Zea mays L) and Thucuc soil where the plants grow, were collected to be studied. Contents of 22 elements in the samples were determined by three methods: XRFA (X-Ray Fluorescence Analysis), GAA (Gamma Activation Analysis), and tracking method to study distribution of these elements in plants and soil-plant relationship. The study was carried out at the Flerov Laboratory of Nuclear Reactions, JINR, Dubna. Distribution of the elements in the soil-plant system was studied

Further development of a track detector as the spectrometer of linear energy transfer

International Nuclear Information System (INIS)

Spurny, F.; Bednar, J.; Vlcek, B.; Botollier-Depois, J.F.

1998-01-01

Track revealing in a track etch detector is a phenomenon related to the linear energy transfer (LET) of the particle registered. The measurements of track parameters permit to determine the LET corresponding to each revealed track, i.e. LET spectrum. We have recently developed a spectrometer of LET based on the chemically etched polyallyldiglycolcarbonate (PADC). In this contribution the results obtained with such spectrometer in some neutron fields are presented, analyzed and discussed. Several radionuclide neutron sources have been used, LET spectrometer has been also exposed in high energy neutron reference fields at CERN and JINR Dubna, and on board aircraft. (author)

Recent study for multibaryon states with strangeness in pC interaction at 10 GeV/c

Energy Technology Data Exchange (ETDEWEB)

Aslanyan, P. Zh., E-mail: paslanian@jinr.ru [Joint Institute for Nuclear Research (Russian Federation)

2013-08-15

Strange multibaryon states with {Lambda}-hyperon and K{sub s}{sup 0} -meson subsystems has been studied from 700 000 stereo photographs or 10{sup 6} inelastic interactions which was obtained from expose of 2-m propane bubble chamber (PBC) LHEP, JINR to proton beams at 10 GeV/c. The obtained results from PBC can be divided into three subjects: in-medium effects of hadronic particles; baryon spectroscopy; hyper-nucleus production. At present the experimental situation is confused; so is theory. New accelerator research complexes has unique possibility for high-statistic and 4{pi}-geometry study of exotic states.

First delayed neutron emission measurements at ALTO with the neutron detector TETRA

International Nuclear Information System (INIS)

Testov, D.; Ancelin, S.; Bettane, J.; Ibrahim, F.; Kolos, K.; Mavilla, G.; Niikura, M.; Verney, D.; Wilson, J.; Kuznetsova, E.; Penionzhkevich, Yu.; Smirnov, V.; Sokol, E.

2013-01-01

Beta-decay properties are among the easiest and, therefore, the first ones to be measured to study new neutron-rich isotopes. Eventually, a very small number of nuclei could be sufficient to estimate their lifetime and neutron emission probability. With the new radioactive beam facilities which have been commissioned recently (or will be constructed shortly) new areas of neutron-rich isotopes will become reachable. To study beta-decay properties of such nuclei at IPN (Orsay) in the framework of collaboration with JINR (Dubna), a new experimental setup including the neutron detector of high efficiency TETRA was developed and commissioned

Technique of infrared synchrotron acceleration diagnostics

International Nuclear Information System (INIS)

Mal'tsev, A.A.; Mal'tsev, M.A.

1997-01-01

Techniques of measuring of current and geometric parameters and evaluating of energy parameters of the ring bunch of relativistic low-energy electrons have been presented. They have been based on using the synchrotron radiation effect in its infrared spectral part. Fast infrared detectors have provided radiation detection in the spectral range Δλ ≅ 0.3-45 μm. The descriptions of some data monitoring and measuring systems developed in JINR for the realization of techniques of the infrared synchrotron acceleration diagnostics have been given. Infrared optics elements specially developed have been used in these systems

Program controlled system for mathematical processing the αp-experiment data

International Nuclear Information System (INIS)

Glagolev, V.V.; Govorun, N.N.; Dirner, A.; Ivanov, V.G.; Kretov, A.P.; Mirolyubov, V.P.; Pervushov, V.V.; Shelontsev, I.I.

1982-01-01

ZEUS system which allows one mathematical processing of bubble chamber pictures for αp-experiment with computer control is descibed. The comparison and basic defect of traditional processing of film information is considered. The structure, operation and further development of this system are described. It consists of the monitoring programs, directory file, input request language, data bank and documentation. ZEUS system is developed for processing αp-experiment from JINR one-meter-hydrogen liquid chamber. It makes possible to eliminate big manual work at organization of mass data processing by a computer. The system is realized on the CDC-6500 computer

High resolution line for secondary radioactive beams at the U400M cyclotron

International Nuclear Information System (INIS)

Rodin, A.M.; Sidorchuk, S.I.; Stepantsov, S.V.

1996-01-01

For implementation of an experimental program for studying nuclear reactions with radioactive ion beams in the energy domain of 20 through 80 MeV · A the high resolution beam line ACCULINNA was put into commissioning on a primary beam line of the JINR U-400M cyclotron. By means of nuclear fragmentation of the 14 N beam with the energy of 51 MeV · A on the 170 mg/cm 2 carbon target radioactive beams of 6 He, 8 He and 8 B were obtained. Possibilities of further development of the set-up are discussed. 6 refs., 7 figs., 2 tabs

Multiwire proportional chambers in the devices for molecular biology constructed at JINR

Energy Technology Data Exchange (ETDEWEB)

Anisimov, Y S; Chernenko, S P; Ivanov, A B; Peshekhonov, V D; Skvaril, J; Zanevsky, Y V [Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of High Energy; Kheiker, D M [Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of High Energy; AN SSSR, Moscow. Inst. Kristallografii)

1980-10-01

The automation of measuring processes in molecular biology is a current problem. In order to solve this problem, conventionally used methods should be changed for an up-to-date technique which allows the processes of data measurement and analysis to be automated. Toward this end two-coordinate proportional chambers (MWPCs) are coming widely into use. The use of MWPCs in devices for radiochromatography and x-ray diffractrometry is discussed in this paper. A new device consisting of proportional chambers has been constructed for an automated analysis of thin layer radiochromatograms. The device enables one to localize radioactive zones (labelled with /sup 3/H, /sup 14/C, /sup 32/P), to identify radionuclides and to measure their activities. The device has a high sensitivity (5 pCi for tritium), a small dead time, good space resolution (in the case of /sup 3/H zones spaced 1-2 mm apart are separated) and high reproducibility. For x-ray diffractometry of single crystals, a high counting rate device has been constructed on the basis of a MWPC with a total number of channels amounting to 350 x 200 = 70,000. The dead time of the device is about 0.6 ..mu..s which allows to detect 3 x 10/sup 5/ events/s at counting losses of no more than 20%. The quantum efficiency (Cu K..cap alpha..) is about 73%. The X and Y space resolution (fwhm) is equal to 1 mm and 1.7 mm, respectively.

Microdosimetric Characteristics of the Clinical Proton Beams at the JINR Phasotron, Dubna

CERN Document Server

Vlcek, B; Spurny, F

2002-01-01

The contribution of the high LET particles to dosimetric and microdosimetric characteristics of 150 and 205 MeV clinical proton beams was experimentally studied using track etched detectors. Secondary heavy charged particles produced from nuclear interactions and degraded protons at the Bragg peak region are particles with high LET. The method of the LET spectra measurement with track etched detectors allows one to determine the contribution of high LET particles to dosimetric characteristics of clinical proton beams: absorbed dose, equivalent dose and the value of the Relative Biological Effectiveness (RBE). Track detectors were irradiated in the various depth of clinical proton beams with the primary energies of 150 and 205 MeV. The LET spectra between 10 and 700 keV/m were measured by means of CR-39 track etched detectors and the automatic optical image analyzer LUCIA-II. The relative contribution of the high LET particles to absorbed dose increases from several per cent at the beam entrance to several ten...

μSR-investigation of high-Tc superconductors at the LNP JINR phasotron

International Nuclear Information System (INIS)

Bezhitadze, D.T.; Borovinskaya, I.P.; Burianek, J.

1989-01-01

High-T c superconductors La 2-x Sr x CuO 4 (x=0+0.25), Ho(Er)Ba 2 Cu 3 O 7-y and Bi-Sr-Ca-Cu-O (the main phase 2212 with a small admixture of the 2223-phase) were investigated in the zero and 100+400 Oe transverse external magnetic fields in the temperature interval 4.2+300 K. The magnetic ordering for the La 2-x Sr x CuO 4 samples with x=0.00 and x=0.01 occurs below T N ∝250 K and T N ∝170 K respectively. A considerable increase in the distribution width of the magnetic field on the muon with an increase in the Sr-content indicates an enhancement of the Cu 2+ magnetic moment deviation from the magnetic ordering axis. The results of the analysis of the μSR spectra indicate the formation of the spin glass state in the La 1.93 Sr 0.07 CuO 4 sample. In contrast to the behaviour of the HoBa 2 Cu 3 O 7-y ceramic the magnetic ordering of the Er-atoms in the ErBa 2 Cu 3 O 7-y sample is not observed in the conparable temperature interval. Our data has also allowed the magnetic field penetration depth λ perpendicular (0) to be determined: 3200±70 A for La 1.9 Sr 0.1 CuO 4 , 2420±60 A for La 1.85 Sr 0.15 CuO 4 , 2000±50 A for Bi-Sr-Ca-Cu-O (phase 2212), 1600±50 A for ErBa 2 Cu 3 O 7-y . 20 refs.; 8 figs

MCBIS2 - Monte-Carlo package for preparing and analyzing experiments with the BIS-2 spectrometer

International Nuclear Information System (INIS)

Nowak, H.; Nowak, V.-D.

1978-01-01

The MCBIS2 user package is designed to simulate the diffraction dissociation reaction np→K 0 Λp and related background reactions. The MCBIS2 user package is written in JINR for the BIS-2 spectrometer consisting of multiwire proportional chambers, multichannel Cherenkov counter and scintillator hodoscopes. The MCBIS2 user package is divided into three sections: initial, working and final. Each section is a group of subprograms belonging to the corresponding GEANT stage. The generation of all primary vertex kinematics for the reaction np→K 0 Λp and tracking in space is considered in detail. Problems of the preparation of necessary information about detectors are discussed

Research Programme for the 660 Mev Proton Accelerator Driven MOX-Plutonium Subcritical Assembly

CERN Document Server

Barashenkov, V S; Buttseva, G L; Dudarev, S Yu; Polanski, A; Puzynin, I V; Sissakian, A N

2000-01-01

The paper presents a research programme of the Experimental Acclerator Driven System (ADS), which employs a subcritical assembly and a 660 MeV proton acceletator operating at the Laboratory of Nuclear Problems of the JINR, Dubna. MOX fuel (25% PuO_2 + 75% UO_2) designed for the BN-600 reactor use will be adopted for the core of the assembly. The present conceptual design of the experimental subcritical assembly is based on a core of a nominal unit capacity of 15 kW (thermal). This corresponds to the multiplication coefficient k_eff = 0.945, energetic gain G = 30 and the accelerator beam power 0.5 kW.

Computer application in scientific investigations

International Nuclear Information System (INIS)

Govorun, N.N.

1981-01-01

A short review of the computer development and application and software in JINR for the last 15 years is presented. Main trends of studies on computer application in experimental and theoretical investigations are enumerated: software of computers and their systems, software of data processing systems, designing automatic and automized systems for measuring track detectors images, development of technique of carrying out experiments on computer line, packets of applied computer codes and specialized systems. The development of the on line technique is successfully used in investigations of nuclear processes at relativistic energies. The new trend is the development of television methods of data output and its computer recording [ru

Some aspects of the file organization and retrieval strategy in large data-bases

International Nuclear Information System (INIS)

Arnaudov, D.D.; Govorun, N.N.

1977-01-01

Methods of organizing a big information retrieval system are discribed. A special attention is paid to the file organization. An adapting file structure is described in more detail. The discussed method gives one the opportunity to organize large files in such a way that the response time of the system can be minimized, when the file is increasing. In connection with the retrieval strategy a method is proposed, which uses the frequencies of the descr/iptors and the couples of the descriptors to forecast the expected number of the relevant documents. Programmes are made, on the base of these methods, which are used in the information retrieval systems of JINR

Study of residual stresses in CT test specimens welded by electron beam

Science.gov (United States)

Papushkin, I. V.; Kaisheva, D.; Bokuchava, G. D.; Angelov, V.; Petrov, P.

2018-03-01

The paper reports result of residual stress distribution studies in CT specimens reconstituted by electron beam welding (EBW). The main aim of the study is evaluation of the applicability of the welding technique for CT specimens’ reconstitution. Thus, the temperature distribution during electron beam welding of a CT specimen was calculated using Green’s functions and the residual stress distribution was determined experimentally using neutron diffraction. Time-of-flight neutron diffraction experiments were performed on a Fourier stress diffractometer at the IBR-2 fast pulsed reactor in FLNP JINR (Dubna, Russia). The neutron diffraction data estimates yielded a maximal stress level of ±180 MPa in the welded joint.

Ion-sorption pumps with an electrostatic field

International Nuclear Information System (INIS)

Larionov, L.S.; Leksakov, O.P.; Serbinov, A.N.

1979-01-01

Parameters are investigated and the choise of optimal operation regimes is made to develop the construction and production of an ion-sorption pump with an electrostatic field (orbitron). Described is the construction of ''Orbitron'' type and the results of bench marks, given are optimal operation regimes, dependence of pumping-out rate on pressure and other parameters. Operarion experience of these pumps on EG-8, EG-5 electrostatic accelerators, as well as on the KGE-300 accelerator in JINR showed their reliable operation during a long period of time and service simplicity. The parameters of the operation regime little differed from those, obtained earlier during bench marks

Yields of the rare-earth neutron-deficient isotopes in the reactions of Mo isotopes with 40Ca ions

International Nuclear Information System (INIS)

Adam, J.; Chaloun, P.; Gangrskij, Yu.P.

1999-01-01

The results of the joint Russian-Chinese experiment on the measurements of the reaction cross sections of the rare-earth neutron-deficient isotopes production and the study of their decay scheme are presented. The studied nuclides were obtained in the reactions 92 Mo + 40 Ca and 97 Mo + 40 Ca on the 4-meter cyclotron of the Flerov Laboratory of Nuclear Reactions, JINR. The recoil nuclei were stopped in the inert gas and transported by the gas flow to the detectors. The single and coincidence spectra of γ-, x-rays and delayed protons were measured. The enhanced yield of the reactions with the charge particle evaporation was observed

Irradiation tests of ATLAS liquid argon forward calorimeter (FCAL) electronics components

CERN Document Server

Leroy, C; Golikov, V; Golubyh, S M; Kukhtin, V; Kulagin, E; Luschikov, V; Merkulov, L; Minashkin, V F; Shalyugin, A N

2002-01-01

FCAL resistors, capacitors, and transformers together with capacitors and sintimid disks of the purity monitor have been irradiated in liquid argon to study their possible lead to argon pollution at a maximal neutron fluence of 1016 n cm-2 at the IBR-2 reactor of JINR, Dubna. The results of charge collection measurements before and after irradiation are reported. Electrical measurement on these FCAL capacitors, resistors and transformers were also performed after irradiation. In general, the results of resistance, capacitance, impedance, leakage current and high voltage breakdown measurements after irradiation show minor changes of value only for some parameters from nominal values or values measured before irradiation.

Pelletized cold moderator of the IBR-2 reactor: current status and future development

International Nuclear Information System (INIS)

Ananiev, V; Beliakov, A; Bulavin, M; Verkhogliadov, A; Kulagin, E; Kulikov, S; Mukhin, K; Shabalin, E; Loktaev, K

2016-01-01

Current status and future development of the pelletized cold moderator of the IBR-2 reactor in Neutron Physics Laboratory of JINR are represented. Nowadays cold moderator works for physical experiments and allows conducting experiments in the region of wavelengths more than 4 Å up to 10-13 times faster in comparison with the warm water moderator. Future development of the pelletized cold moderator is aimed at increasing the time of its operation for experiments and is based on three components: creation of a system of continuous charging and discharging of beads, supplementation of various additives, and use of new materials, such as triphenylmethane. (paper)

Heavy ion measurements by use of chemical detectors

International Nuclear Information System (INIS)

Huebner, K.; Erzgraeber, G.; Eichhorn, K.

1980-01-01

In order to test whether the threshold system polyvinyl alcohol/methyl organe/chloral hydrate/sodium tetraborate permits quantitative detection of individual particles, the chemical detector was irradiated at the JINR U-200 cyclotron with 4 He, 12 C, 18 O, 22 Ne ions having different LET. Irradiations were performed with detectors of four different borax concentrations (the chloral hydrate concentration being constant). The colour change dose Dsub(u) increases linearly with increasing borax concentration and at constant borax concentration with increasing LET. Hence it follows that the G value of dehydrochlorination decreases with increasing LET. Fluence ranges measurable with detectors of different composition are given for the heavy ions studied. (author)

Clustering methods and visualization algorithms to aid nuclear reactor operative diagnostics

International Nuclear Information System (INIS)

Pepelyshev, Yu.N.; Dzwinel, W.

1990-01-01

The software system developed plays the role of the aid to an operator for nuclear reactor diagnostics. The noise analysis of the reactor parameters such as power, temperature and coolant flow rate constitutes the basis of the system. Combination of data acquisition, data preprocessing, clustering and cluster visualization algorithms with heuristic techniques of results analysis, determine the way of its implementation. Two regimes are available. The first one - extended - is recommended for a long term investigations and the second - suppressed for the aid to the reactor operation monitoring. The system has been tested and developed at the JINR IBR-2 pulsed reactor. 13 refs.; 4 figs.; 2 tabs

'SANDANSKI-2': European east-west coordination meeting on nuclear science

International Nuclear Information System (INIS)

Oertzen, W. von; Kalpakchieva, R.

2001-01-01

'Sandanski-2' is a European East-West Coordination Meeting on Nuclear Science, which took place on the 5-9 May 2001 in the town of Sandanski, Bulgaria. It is the second meeting of this type. Here we present the motivations for holding this meeting, its scientific programme, the list of participants, as well as a short summary of the scientific and executive issues, which were presented by 66 reports. At the meeting 115 scientists from 17 European countries, the USA, Japan and JINR were present. Complete information on the Meeting is available on a CD and can also be found under the address: http://www.sandanski.ru/

Phenomenological pictures on the cumulative effect in nucleus-nucleus collisions at the incident kinetic energy of 3.65 A GeV

International Nuclear Information System (INIS)

Besliu, Calin; Jipa, Alexandru; Zaharia, Radu; Tugulea, Mircea; Iosif, Maria; Argintaru, Dan; Argintaru, Cristina

1996-01-01

In this work new experimental results on the cumulative production of the negative pions are reported. Eight central and peripheral (inelastic) collisions at 4.5 A GeV/c incident momentum are taken into account comparisons with experimental results on the cumulative effects obtained in n-p collisions at 4.53 GeV/c and O-Ne, O-Pb collisions at 4.5 A GeV/c are included in this work. A significant cumulative production of negative pions is observed. The non-equilibrium mechanisms can be considered for cumulative effect. The experiments have been performed at the Synchrophasotron from JINR Dubna in the frame of the SKM 200 Collaboration. (authors)

Calculation of ion storage in electron beams with account of ion-ion interactions

International Nuclear Information System (INIS)

Perel'shtejn, Eh.A.; Shirkov, G.D.

1979-01-01

Ion storage in relativistic electron beams was calculated taking account of ion-ion charge exchange and ionization. The calculations were made for nitrogen ion storage from residual gas during the compression of electron rings in the adhezator of the JINR heavy ion accelerator. The calculations were made for rings of various parameters and for various pressures of the residual gas. The results are compared with analogous calculations made without account of ion-ion processes. It is shown that at heavy loading of a ring by ions ion-ion collisions play a significant part, and they should be taken into account while calculating ion storage

Time-dependent recovery from Hell film boiling: confined geometry case

International Nuclear Information System (INIS)

Filippov, Yu.P.; Sergeev, I.A.

1991-01-01

Experiment results for transient cooldown of a solid in saturated superfluid helium after heat load switch-off are reported. The fluid space restriction in the vicinity of a heater is a specific feature of the tested heat transfer configuration. In this case the recovery duration is found to be set as ≅70% by the stage of film boiling received by the end of heat generation, as ≅20% -by the value of bulk fluid temperature, as ≅15% - by the confinement degree. The sample orientation does not affect the recovery time directly. The investigation has been performed at the Particle Physics Laboratory, JINR

Research programme for the 660 MeV proton accelerator driven MOX-plutonium subcritical assembly

International Nuclear Information System (INIS)

Barashenkov, V.S.; Buttsev, V.S.; Buttseva, G.L.; Dudarev, S.Yu.; Polanski, A.; Puzynin, I.V.; Sissakyan, A.N.

2000-01-01

The paper presents a research programme of the Experimental Accelerator Driven System (ADS), which employs a subcritical assembly and a 660 MeV proton accelerator operating at the Laboratory of Nuclear Problems of the JINR, Dubna. MOX fuel (25% PuO 2 + 75% UO 2 ) designed for the BN-600 reactor use will be adopted for the core of the assembly. The present conceptual design of the experimental subcritical assembly is based on a core of a nominal unit capacity of 15 kW (thermal). This corresponds to the multiplication coefficient k eff = 0.945, energetic gain G=30 and the accelerator beam power 0.5 kW

Numerical simulation of particle dynamics in storage rings using BETACOOL program

International Nuclear Information System (INIS)

Meshkov, I.N.; Pivin, R.V.; Sidorin, A.O.; Smirnov, A.V.; Trubnikov, G.V.

2006-01-01

BETACOOL program developed by JINR electron cooling group is a kit of algorithms based on common format of input and output files. The program is oriented to simulation of the ion beam dynamics in a storage ring in the presence of cooling and heating effects. The version presented in this report includes three basic algorithms: simulation of rms parameters of the ion distribution function evolution in time, simulation of the distribution function evolution using Monte-Carlo method and tracking algorithm based on molecular dynamics technique. General processes to be investigated with the program are intrabeam scattering in the ion beam, electron cooling, interaction with residual gas and internal target

Study of neutron induced outgassing from tungsten alloy for ATLAS FCAL

CERN Document Server

Leroy, C; Cheplakov, A P; Golikov, V; Golubyh, S M; Kulagin, E; Kukhtin, V; Luschikov, V

1999-01-01

The use of sintered tungsten alloy slugs as absorber in the ATLAS Forward Calorimeter (FCAL) raised concern that it could possibly poison the liquid argon during the detector operation in the hard radiation environment expected at LHC. A vacuum container filled with tungsten slugs was exposed to the fast neutron fluence of 1.5$\\cdot$10$^{16}$~n~cm$^{-2}$ at the IBR-30 reactor of JINR, Dubna. The residual gas pressure was analysed. The study was completed by mass spectrometer measurements. An upper limit value of 0.1~ppm was determined for the pollution of liquid argon in FCAL due to outgassing from tungsten slugs under irradiation.

Study of the possibility to use dp-elastic scattering for the Nuclotron external deuteron beam polarimetry

International Nuclear Information System (INIS)

Gurchin, Yu.V.; Isupov, A.Yu.; Khrenov, A.N.; Kiselev, A.S.; Ladygin, V.P.; Reznikov, S.G.; Vasil'ev, T.A.; Janek, M.; Karachuk, J.T.

2011-01-01

A selection of dp-elastic scattering events at energies of 1.6 and 2.0 GeV by using scintillation counters has been performed. The procedure of the CH 2 -C subtraction has been established. The dependence of the elastic events yield on the filter thickness has been investigated. This method can be used to develop the efficient high-energy deuteron beam polarimetry

Parameters of medical proton beam of JINR and study on its medical use

International Nuclear Information System (INIS)

Dzhelepov, V.P.; Abazov, V.M.; Komarov, V.I.; Kuz'min, E.S.; Reshetnikov, G.P.; Savchenko, O.V.; Cherevatenko, E.P.; Ruderman, A.I.; Astrakhan, B.V.; Vajnberg, M.Sh.

1975-01-01

Experiments are described on irradiation of deep-lying tumours in man with a proton beam on the Dubna synchrocyclotron. A proton beam with an energy of 680 MeV is focused on a braking filter of liquid paraffin or water, 1.5 m thick. The slowed-down protons are cleared of impurity particles by the magnetic field and are transported for about 30 m to clinical premises located behind a 2 m concrete shield. The total intensity and maximum density of the proton flux with an energy of 185 MeV are about 10 9 s -1 and 5x10 7 cm -2 s -1 , respectively. The results of dose measurements showed that the maximum dose rate is about 300 rad/min at a proton energy of 185 MeV, and about 120 rad/min at 90 MeV. The contribution of the secondary particles to the dose distribution is about 10%. Patients can be irradiated either in the static regime, or in the rotation regime, when the patient rotates about a vertical axis passing through the tumour centre. While the patient is rotating, all the changes in the thickness of the tissues through which the beam passes before it reaches the tumour, are automatically compensated by a change in the thickness of the water absorber installed in front of the patient. Irradiations of patients with surface tumours showed that the proton beam parameters and the technical equipment of the systems meet the medical requirements

Modelling of an experiment for the study of neutron spallation source at JINR

International Nuclear Information System (INIS)

Kumawat, Harphool; Goyal, Uttam; Kumar, V.; Barashenkov, V.S.

2002-01-01

Intense neutron spallation source (INSS) is a necessary requirement of accelerator driven sub-critical systems. INSS are proposed to be generated using the high current proton beams. Some studies are conducted for the neutron flux, transmutation rates and energy gains and a larger number of related experiments are being planned

Event Display for the Fixed Target Experiment BM@N

Directory of Open Access Journals (Sweden)

Gertsenberger Konstantin

2016-01-01

Full Text Available One of the main problems to be solved in modern high energy physics experiments on particle collisions with a fixed target is the visual representation of the events during the experiment run. The article briefly describes the structure of the BM@N facility at the Nuclotron being under construction at the Joint Institute for Nuclear Research with the aim to study properties of the baryonic matter in collisions of ions with fixed target at energies up to 4 GeV/nucleon (for Au79+. Aspects concerning the visualization of data and detector details at the modern experiments and possibilities of practical applications are discussed. We present event display system intended to visualize the detector geometries and events of particle collisions with the fixed target, its options and features as well as integration with BMNRoot software. The examples of graphical representation of simulated and reconstructed points and particle tracks with BM@N geometry are given for central collisions of Au79+ ions with gold target and deuterons with carbon target.

Analysis of electric current flow through the HTc multilayered superconductors

Science.gov (United States)

Sosnowski, J.

2016-02-01

Issue of the flow of the transport current through multilayered high-temperature superconductors is considered, depending on the direction of the electric current towards the surface of the superconducting CuO2 layers. For configuration of the current flow inside of the layers and for perpendicular magnetic field, it will be considered the current limitations connected with interaction of pancake type vortices with nano-sized defects, created among other during fast neutrons irradiation. So it makes this issue associated with work of nuclear energy devices, like tokamak ITER, LHC and actually developed accelerator Nuclotron-NICA, as well as cryocables. Phenomenological analysis of the pinning potential barrier formation will be in the paper given, which determines critical current flow inside the plane. Comparison of theoretical model with experimental data will be presented too as well as influence of fast neutrons irradiation dose on critical current calculated. For current direction perpendicular to superconducting planes the current-voltage characteristics are calculated basing on model assuming formation of long intrinsic Josephson's junctions in layered HTc superconductors.

Magnetic field measurement in the analyzing magnet of NIS spectrometer

Science.gov (United States)

Avramenko, S. A.; Afanas'ev, S. V.; Voloshina, I. G.; Dolgii, S. A.; Yusupov, A. Yu.; Kalmykov, A. V.; Makoveev, V. K.; Nikolaevskii, G. P.; Ostrovskii, I. V.; Perepelkin, E. E.; Peresedov, V. F.; Plyashkevich, S. N.; Rossiiskaya, N. S.; Salmin, R. A.; Spodarets, V. K.; Strokovskii, E. A.; Yudin, I. P.

2006-12-01

The main goals of the Nucleon Intrinsic Strangeness experiment (NIS) are the search for the effects of hidden polarized strangeness in the nucleon and the exploration and study of exotic baryons (pentaquarks) in NN reactions. The setup is located in the Laboratory of High Energies at the Joint Institute for Nuclear Research in channel 4V of the Nuclotron extracted beam with the energy between 1 and 4 GeV. The 1SP-40-4V electromagnet of the spectrometer has the external dimensions 3.20 × 3.26 × 4.48 m and the aperture 2.74 × 0.68 m. The magnetic field measurement was performed using the three-component Hall magnetometer in the computer-controlled automated mode. The volume of measurements was 1.03 × 0.60 × 3.92 m. The description of the measuring equipment and measurement procedure is given. The results of the measurements are used for the Monte Carlo computer modeling of the experiment. These results will be used in the analysis of physical data after their acquisition.

Electron string phenomenon: physics and use

International Nuclear Information System (INIS)

Donets, Evgeny D

2004-01-01

Electron string phenomenon arises as a result of phase transition of a state of multiply reflected electron beam to this new discovered state of one component electron plasma and can be easily observed in the reflex mode of EBIS operation. The transition goes via a strong instability, which causes considerable electron energy spread, which in its turn suppresses the instability. Electron string state is a stationary state of hot pure electron plasma, which is heated by injected electron beam and cooled because of electron loses. Electron string is quiet in broad regions of experimental parameters, so that it is used for confinement and ionization of positive ions by electron impact to highly charge states similar to electron beams in EBIS. Application of electron strings instead of electron beams for ion production allows to save about 99% of electric power of electron beam and simultaneously to improve reliability of an ion source considerably. The JINR EBIS 'Krion-2' in the string mode of operation is used for production of N 7+ , Ar 16+ and Fe 24+ ion beams and their acceleration to relativistic energies on the facility of the JINR super conducting one turn injection synchrotron 'Nuklotron'. The tubular electron string possibly can exist and it is under study now theoretically and experiments are prepared now. Estimations show that a Tubular Electron String Ion Source (TESIS) could have up to three orders of magnitude higher ion output then a Linear one (LESIS). In frames of nuclear astrophysics electron strings can be used for research of fusion nuclear reactions at low energies in conditions when both beam and target nuclei do not carry orbital electrons. The project NARITA - Nuclear Astrophysics Researches in an Ion Trap Apparatus is proposed. Polarization effects also can be studied

Interactions of relativistic heavy ions in thick heavy element targets and some unresolved problems

International Nuclear Information System (INIS)

Brandt, R.; Ditlov, V.A.; Pozharova, E.A.; Smirnitskij, V.A.

2005-01-01

Interactions of relativistic heavy ions with total energies above 30 GeV in thick Cu and Pb targets (≥2 cm) have been studied with various techniques. Radiochemical irradiation experiments using thick Cu targets, both in a compact form or as diluted '2π-Cu targets' have been carried out with several relativistic heavy ions, such as 44 GeV 12 C (JINR, Dubna) and 72 GeV 40 Ar (LBL, Berkeley, USA). Neutron measuring experiments using thick targets irradiated with various relativistic heavy ions up to 44 GeV 12 C have been performed at JINR. In addition, the number of 'black prongs' in nuclear interactions (due to protons with energies less than 30 MeV and emitted from the target-like interaction partner at rest) produced with 72 GeV 22 Ne ions in nuclear emulsion plates has been measured in the first nuclear interaction of the primary 22 Ne ion and in the following second nuclear interaction of the secondary heavy (Z>1) ion. Some essential results have been obtained. 1) Spallation products produced by relativistic secondary fragments in interactions ([44 GeV 12 C or 72 GeV 40 Ar]+Cu) within thick copper yield less products close to the target and much more products far away from the target as compared to primary beam interactions. This applies also to secondary particles emitted into large angles (Θ>10deg). 2) The neutron production of 44 GeV 12 C within thick Cu and Pb targets is beyond the estimated yield as based on experiments with 12 GeV 12 C. These rather independent experimental results cannot be understood with well-accepted nuclear reaction models. They appear to present unresolved problems

Electron string phenomenon: physics and use

Science.gov (United States)

Donets, Evgeny D.

2004-01-01

Electron string phenomenon arises as a result of phase transition of a state of multiply reflected electron beam to this new discovered state of one component electron plasma and can be easily observed in the reflex mode of EBIS operation. The transition goes via a strong instability, which causes considerable electron energy spread, which in its turn suppresses the instability. Electron string state is a stationary state of hot pure electron plasma, which is heated by injected electron beam and cooled because of electron loses. Electron string is quiet in broad regions of experimental parameters, so that it is used for confinement and ionization of positive ions by electron impact to highly charge states similar to electron beams in EBIS. Application of electron strings instead of electron beams for ion production allows to save about 99% of electric power of electron beam and simultaneously to improve reliability of an ion source considerably. The JINR EBIS `Krion-2' in the string mode of operation is used for production of N7+, Ar16+ and Fe24+ ion beams and their acceleration to relativistic energies on the facility of the JINR super conducting one turn injection synchrotron `Nuklotron'. The tubular electron string possibly can exist and it is under study now theoretically and experiments are prepared now. Estimations show that a Tubular Electron String Ion Source (TESIS) could have up to three orders of magnitude higher ion output then a Linear one (LESIS). In frames of nuclear astrophysics electron strings can be used for research of fusion nuclear reactions at low energies in conditions when both beam and target nuclei do not carry orbital electrons. The project NARITA — Nuclear Astrophysics Researches in an Ion Trap Apparatus is proposed. Polarization effects also can be studied.

Volume concentration of 41 elements in ground level of atmosphere in Bratislava

International Nuclear Information System (INIS)

Florek, M.; Meresova, J.; Holy, K.; Sykora, I.; Frontasyeva, M. V.; Pavlov, S. S.

2006-01-01

The concentrations of 41 chemical elements (heavy metals, rare earths, and actinides) were determined in atmospheric aerosol using nuclear and related analytical techniques. The sampling location was in Bratislava (Slovak Republic). The main goal of this study is the quantification of the atmospheric pollution and its trend. The elemental content in filters was measured using instrumental neutron activation analysis at IBR-2 reactor in JINR Dubna and by atomic absorption spectrometry in Bratislava. The obtained results confirmed the decreasing trend of pollution by most of the heavy metals in Bratislava atmosphere, and they are compared with the contents of pollutants in atmosphere of other cities. We determined also the composition of clear filter materials. (authors)

Concentration of elements in atmospheric aerosol in Bratislava

International Nuclear Information System (INIS)

Meresova, J.; Florek, M.; Holy, K.; Sykora, I.; Frontasyeva, M.V.; Pavlov, S.S.

2006-01-01

The concentrations of 41 chemical elements (heavy metals, rare earths, and actinides) were determined in atmospheric aerosol using nuclear and related analytical techniques. The sampling location in Bratislava (Slovak Republic). The main goal of this study is the quantification of the atmospheric pollution and its trend. The elemental content in filters was measured using instrumental neutron activation analysis at IBR-2 reactor in JINR Dubna and by atomic absorption spectrometry in Bratislava. The obtained results confirm the decreasing trend of pollution by most of the heavy metals in Bratislava atmosphere, and they are compared with the contents of pollutants in atmosphere of other cities. We determined also the composition of clear filter materials. (Authors)

The DELPHI experiment at LEP

International Nuclear Information System (INIS)

Alekseev, G.D.; Bardin, D. Yu.; Bilen'kij, M.S.

2000-01-01

This paper summarizes the current status of the DELPHI experiment, which is operating at the Large Electron Positron (LEP) Collider at CERN. The results from running at the energies around the Z resonance (LEP1) are based on the full available data, while the results obtained at higher energies (LEP2) are based on the data collected up to 1998. The analysis of the data collected at the highest centre-of-mass energies (above 200 GeV) is still in progress and new results are expected. We present briefly some of the most important DELPHI results paying a special attention to the contribution of JINR group to the detector construction and data analysis

Automation of reactor neutron activation analysis

International Nuclear Information System (INIS)

Pavlov, S.S.; Dmitriev, A.Yu.; Frontasyeva, M.V.

2013-01-01

The present status of the development of a software package designed for automation of NAA at the IBR-2 reactor of FLNP, JINR, Dubna, is reported. Following decisions adopted at the CRP Meeting in Delft, August 27-31, 2012, the missing tool - a sample changer - will be installed for NAA in compliance with the peculiar features of the radioanalytical laboratory REGATA at the IBR-2 reactor. The details of the design are presented. The software for operation with the sample changer consists of two parts. The first part is a user interface and the second one is a program to control the sample changer. The second part will be developed after installing the tool.

Silicon Telescope Detectors

CERN Document Server

Gurov, Yu B; Sandukovsky, V G; Yurkovski, J

2005-01-01

The results of research and development of special silicon detectors with a large active area ($> 8 cm^{2}$) for multilayer telescope spectrometers (fulfilled in the Laboratory of Nuclear Problems, JINR) are reviewed. The detector parameters are listed. The production of totally depleted surface barrier detectors (identifiers) operating under bias voltage two to three times higher than depletion voltage is described. The possibility of fabrication of lithium drifted counters with a very thin entrance window on the diffusion side of the detector (about 10--20 $\\mu$m) is shown. The detector fabrication technique has allowed minimizing detector dead regions without degradation of their spectroscopic characteristics and reliability during long time operation in charge particle beams.

Measurement of the temperature dependence of the ddμ-molecule formation rate in gaseous deuterium at the pressures 1.5 and 0.4 kbar

International Nuclear Information System (INIS)

Bystritskij, V.M.; Dzhelepov, V.P.; Zinov, V.G.

1990-01-01

In the experiment with a gaseous deuterium target of high pressure on the muon beam of the JINR phasotron the temperature dependence of the ddμ-molecule formation rate (λ ddμ ) has been measured. Measurements have been performed with liquid deuterium at the temperature T=20.3 K and with gaseous deuterium at pressure 1500 and 400 bar in the temperature region T=49-300 K. It is found that the value λ ddμ does not depend on the deuterium density for each temperature. The obtained results are in fairly good agreement with theory and with the data of other experiments made with deuterium of sufficiently (one-two order) lower density. 22 refs.; 3 figs.; 1 tab

Pion minus energy measurement by a multilayer semiconductor spectrometer

International Nuclear Information System (INIS)

Gornov, M.G.; Gurov, Yu.B.; Lapushkin, S.V.

1981-01-01

A technique for determining π - meson energy by a laminated semiconductor spectrometer is described. Results of experimental test of the technique carried out using beams of meson track of the JINR synchrocyclotron and three Si(Li) detectors are given. A specific feature of the technique is that chi 2 criterium with a functional written through exact thicknesses of semiconductor detectors was used for separating events with disturbance of ionization dependence and determining particle energy. It is shown that the absolute resolution can be not worse than 0.5 MeV in a wide energy range. It is concluded that the technique suggested is suitable for measuring energy of any charged particles with indefinite energy release during stoppage [ru

Upgrade of detectors of neutron instruments at Neutron Physics Laboratory in Řež

Energy Technology Data Exchange (ETDEWEB)

Litvinenko, E.I., E-mail: litvin@nf.jinr.ru [Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 14980 Dubna (Russian Federation); Ryukhtin, V. [Nuclear Physics Institute of the CAS v.v.i., Řež 130, 250 68 Řež (Czech Republic); Bogdzel, A.A.; Churakov, A.V. [Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 14980 Dubna (Russian Federation); Farkas, G. [Charles University in Prague, Department of Physics of Material, Ke Karlovu 5, CZ-12116 Prague (Czech Republic); Hervoches, Ch.; Lukas, P. [Nuclear Physics Institute of the CAS v.v.i., Řež 130, 250 68 Řež (Czech Republic); Pilch, J. [Nuclear Physics Institute of the CAS v.v.i., Řež 130, 250 68 Řež (Czech Republic); Institute of Physics, Czech Academy of Sciences, Na Slovance 1992/2, 1822 Prague (Czech Republic); Saroun, J.; Strunz, P. [Nuclear Physics Institute of the CAS v.v.i., Řež 130, 250 68 Řež (Czech Republic); Zhuravlev, V.V. [Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 14980 Dubna (Russian Federation)

2017-01-01

Three neutron instruments at the Neutron Physics Laboratory (NPL) in Řež near Prague — small-angle scattering (SANS) MAUD, strain scanner SPN-100 and strain diffractometer TKSN-400 — have been modernized recently with new 2D position-sensitive detectors (PSDs) from JINR, Dubna. Here we report on the progress made in relation to the possibilities of the diffractometers due to the improved performance of the detectors. The first part of the paper is dedicated to a detailed description of the hardware and software of the PSDs, as well as its integration with the in-house experimental control software. Then practical examples of neutron scattering experiments for each of the upgraded facilities are presented.

Particles and nuclei, letters

International Nuclear Information System (INIS)

2000-01-01

The present collection of letters from JINR, Dubna, contains seven separate records on the integral representation for structure functions and target mass effects, multiscale properties of DNA primary structure including cross-scale correlations, dissipative evolution of the elementary act, the fine structure of the M T =1 Gamow-Teller resonance in 147g Tb→ 147 Gd β + /EC decay, the behaviour of the TVO temperature sensors in the magnetic fields, a fast method for searching for tracks in multilayer drift chambers of HADES spectrometer, a novel approach to particle track etching including surfactant enhanced control of pore morphology, azimuthal correlations of secondary particles in 32 S induced interactions with Ag(Br) nuclei at 4.5 GeV/ c/ nucleon

Calculation of Multisphere Neutron Spectrometer Response Functions in Energy Range up to 20 MeV

CERN Document Server

Martinkovic, J

2005-01-01

Multisphere neutron spectrometer is a basic instrument of neutron measurements in the scattered radiation field at charged-particles accelerators for radiation protection and dosimetry purposes. The precise calculation of the spectrometer response functions is a necessary condition of the propriety of neutron spectra unfolding. The results of the response functions calculation for the JINR spectrometer with LiI(Eu) detector (a set of 6 homogeneous and 1 heterogeneous moderators, "bare" detector within cadmium cover and without it) at two geometries of the spectrometer irradiation - in uniform monodirectional and uniform isotropic neutron fields - are given. The calculation was carried out by the code MCNP in the neutron energy range 10$^{-8}$-20 MeV.

Fusion-fission of superheavy nuclei at low excitation energies

International Nuclear Information System (INIS)

Itkis, M.G.; Oganesyan, Yu.Ts.; Kozulin, E.M.

2000-01-01

The process of fusion-fission of superheavy nuclei with Z = 102 -122 formed in the reactions with 22 Ne, 26 Mg, 48 Ca, 58 Fe and 86 Kr ions at energies near and below the Coulomb barrier has been studied. The experiments were carried out at the U-400 accelerator of the Flerov Laboratory of Nuclear Reactions (JINR) using a time-of-flight spectrometer of fission fragments CORSET and a neutron multi-detector DEMON. As a result of the experiments, mass and energy distributions of fission fragments, fission and quasi-fission cross sections, multiplicities of neutrons and gamma-rays and their dependence on the mechanism of formation and decay of compound superheavy systems have been studied

Polarized Epithermal Neutron Studies of Magnetic Domains

International Nuclear Information System (INIS)

Alfimenkov, V.P.; Chernikov, A.N.; Lason, L.; Mareev, Yu. D.; Novitsky, V.V.; Pikelner, L.B.; Skoy, V.R.; Tsulaya, M.I.; Gould, C.R.; Haase, D.G.; Roberson, N.R.

1997-01-01

The average size and shape of magnetic domains in a material can be determined from the precession of polarized neutrons traversing the material. Epithermal neutrons (0.5eV< En<100eV), which process more slowly than thermals, effectively probe the internal structure of samples that are thick or have large domains or large internal fields. Such epithermal neutron measurements require a neutron polarizer and analyzer based on cryogenically polarized spin filters. We discuss the measurements at JINR, Dubna, of magnetic domains in a 2.0 cm. diam. crystal of holmium using 1.7 to 59eV neutrons polarized by a dynamically polarized proton target and analyzed with a statically polarized dysprosium target

Study of the Clinical Proton Beam Relative Biological Effectiveness at the JINR Phasotron, Dubna

CERN Document Server

Vitanova, A; Gaevskii, V N; Molokonov, A G; Spurny, F; Fadeeva, T A; Shmakova, N L

2002-01-01

Proton clinical beams contain particles with high linear energy transfer (LET). Secondary heavy charged particles produced from nuclear interactions and degraded protons at the Bragg peak region are particles with high LET. These particles could enhance the Relative Biological Effectiveness (RBE) of the proton beam. We have carried out two radiobiological experiments to investigate the RBE of 150 MeV clinical proton beam. The irradiation of the Chinese Hamster V79 cells were performed at two points of the depth-dose distribution - at the beam entrance and at the Bragg peak. The contribution of the high LET particles to dosimetric and microdosimetric characteristics in the various depth of proton beam was also experimentally studied using the CR-39 track etched detectors. The LET spectra between 10 and 700 keV/{\\mu}m were measured by means of track detectors and the automatic optical image analyzer LUCIA-II. The relative contribution of the high LET particles to ab! sorbed dose increases from several per cent ...

Test facility for investigation of heating of 30 GHz accelerating structure imitator for the CLIC project

International Nuclear Information System (INIS)

Elzhov, A.V.; Ginzburg, N.S.; Kaminsky, A.K.; Kuzikov, S.V.; Perelstein, E.A.; Peskov, N.Yu.; Petelin, M.I.; Sedykh, S.N.; Sergeev, A.P.; Sergeev, A.S.; Syratchev, I.; Zaitsev, N.I.

2004-01-01

Since 2001 an experimental test facility for investigation of lifetime of a copper material, with respect to multiple RF pulse actions, was set up on the basis of the JINR (Dubna) FEM oscillator, in collaboration with IAP RAS (Nizhny Novgorod). A high-Q copper cavity, which simulates the parameters of the accelerating structure of the collider CLIC at an operating frequency of 30 GHz, is used in the investigation. The experimental setup consists of a wavebeam injector--FEM oscillator (power of ∼25 MW, pulse duration up to 200 ns, spectral bandwidth not higher than 0.1%), a quasi-optic two-mirror transmission line, a wave-type converter, and a testing cavity. The frequency and transmission features of the components of the quasi-optic line were analyzed

The preliminary tests of the superconducting electron cyclotron resonance ion source DECRIS-SC2.

Science.gov (United States)

Efremov, A; Bekhterev, V; Bogomolov, S; Drobin, V; Loginov, V; Lebedev, A; Yazvitsky, N; Yakovlev, B

2012-02-01

A new compact version of the "liquid He-free" superconducting ECR ion source, to be used as an injector of highly charged heavy ions for the MC-400 cyclotron, is designed and built at the Flerov Laboratory of Nuclear Reactions in collaboration with the Laboratory of High Energy Physics of JINR. The axial magnetic field of the source is created by the superconducting magnet and the NdFeB hexapole is used for the radial plasma confinement. The microwave frequency of 14 GHz is used for ECR plasma heating. During the first tests, the source shows a good enough performance for the production of medium charge state ions. In this paper, we will present the design parameters and the preliminary results with gaseous ions.

Application of local computer networks in nuclear-physical experiments and technology

International Nuclear Information System (INIS)

Foteev, V.A.

1986-01-01

The bases of construction, comparative performance and potentialities of local computer networks with respect to their application in physical experiments are considered. The principle of operation of local networks is shown on the basis of the Ethernet network and the results of analysis of their operating performance are given. The examples of operating local networks in the area of nuclear-physics research and nuclear technology are presented as follows: networks of Japan Atomic Energy Research Institute, California University and Los Alamos National Laboratory, network realization according to the DECnet and Fast-bus programs, home network configurations of the USSR Academy of Sciences and JINR Neutron Physical Laboratory etc. It is shown that local networks allows significantly raise productivity in the sphere of data processing

Independent Yields of Kr Isotopes at Photofission of $^{232}$Th and $^{238}$U

CERN Document Server

Gangrsky, Yu P; Zemlyanoi, S G; Maslova, N Yu; Myshinskii, G V; Norov, K S; Penionzhkevich, Yu E; Selesh, O

2002-01-01

The yields of the primary fission fragments - Kr isotopes - at the photofission of ^{232}Th and ^{238}U were measured. The experiments were performed at the microtron of FLNR, JINR, with the energy of the accelerated electrons 25 MeV. The methodic of fission fragments transportation by the gas flow through the capillary and condensation of the inert gases in the cryostat at the liquid nitrogen temperature was used. The fission fragments of other elements were stopped by the filter on the entrance of the capillary. The identification of the Kr isotopes was performed using the gamma-spectra of their daughter products. The mass distribution of the Kr isotopes independent yields was obtained and the comparison with yields at the prompt and thermal neutron fission was discussed.

Particles and nuclei, letters

International Nuclear Information System (INIS)

2002-01-01

The present collection of letters from JINR, Dubna, contains ten separate records on Wien filter using in exploring on low-energy radioactive nuclei, memory effects in dissipative nucleus-nucleus collision, topological charge and topological susceptibility in connection with translation and gauge invariance, solutions of the multitime Dirac equation, the maximum entropy technique. System's statistical description, the charged conductor inside dielectric. Solution of boundary condition by means of auxiliary charges and the method of linear algebraic equations, optical constants of the TGS single crystal irradiated by power pulsed electron beam, interatomic pair potential and n-e amplitude from slow neutron scattering by noble gases, the two-coordinate multiwire proportional chamber of the high spatial resolution and neutron drip line in the region of O-Mg isotopes

The dynamics of ammonium ions in K1-x(NH4)xCl mixed crystals by the neutron scattering study

International Nuclear Information System (INIS)

Smirnov, L.S.; Natkanets, I.; Shuvalov, L.A.; Dolbinina, V.V.

2004-01-01

The study of vibrational spectrum of the K 1-x (NH 4 ) x Cl mixed crystals in a dynamically disordered cubic α-phase at 10 K is carried out by means of inelastic incoherent neutron scattering on the NERA-PR time-of-flight spectrometer set at the IBR-2 reactor (JINR, Dubna). It is shown that low-energy modes of ammonium ions with the energies 19-23 and 62-63 cm -1 at 10 K are observed only within the disordered cubic α-phase and are absent in the ordered cubic δ-phase of NH 4 Cl. The energies of local translation and libration modes of ammonium ions are determined in the α- and δ-phases of the K 1-x (NH 4 ) x Cl mixed crystals

A New approach for the data acquisition system of the cairo fourier diffractometer

International Nuclear Information System (INIS)

Maayouf, R.M.A.; Khalil, M.I.

2000-01-01

The present work deals with a new approach for the reverse time of flight (RTOF) analysis of the diffraction spectra. The approach is based on the same RTOF concept used for the design of a separate RTOF analyzer and applies, for data acquisition, a special interface card and software program installed in a PC computer, to perform the cross-correlation functions between the three signals received from the chopper decoder, detector and the pulsed neutron source respectively. The new approach have been realized for use with a Fourier diffractometer facility based on the RTOF concept. It has been found from test measurements performed with the high resolution Fourier diffractometer (HRFD) at the IBR-2 reactor (JINR, Dubna) that the new approach can successfully replace the RTOF analyzer

Intense resonance neutron source (IREN) - new pulsed source for nuclear physical and applied investigations

International Nuclear Information System (INIS)

Anan'ev, V.D.; Furman, W.I.; Kobets, V.V.; Meshkov, I.N.; Pyataev, V.G.; Shirkov, G.D.; Shvets, V.A.; Sumbaev, A.P.; Kuatbekov, R.P.; Tret'yakov, I.T.; Frolov, A.R.; Gurov, S.M.; Logachev, P.V.; Pavlov, V.M.; Skarbo, B.A.

2005-01-01

An accelerator-driven subcritical system (200 MeV electron linac + metallic plutonium subcritical core) IREN is constructed at the Joint Institute for Nuclear Research (JINR). The new pulsed neutron source IREN is optimized for maximal yield of resonance neutrons (1-10 5 eV). The S-band electron linac with a pulse duration near 200 ns, repetition rate up to 150 Hz and the mean beam power 10 kW delivers 200-MeV electrons onto a specially designed tungsten target (an electron-neutron converter) situated in the center of a very compact and fast subcritical assembly with K eff 15 per second. A mean fission power of the multiplying target is planned to be near 15 kW. The current status of the project is presented

High resolution beam line of the U400M cyclotron and RIB accumulation and cooling in the K4 storage ring

International Nuclear Information System (INIS)

Rodin, A.M.; Sidorchuk, S.I.; Stepantsov, S.V.

1996-01-01

The high resolution beam line ACCULINNA put into operation on a primary beam line of the JINR U400M cyclotron is discussed in the framework of the TREBLE project. The capability of the beam line for producing radioactive ion beams is demonstrated by means of nuclear fragmentation of the primary 14 N beam, with the energy of 51 MeV · A, on the 170 mg/cm 2 carbon target. Characteristics of the obtained 6 He, 8 He and 8 B radioactive beams are presented. A scheme of accumulation and cooling on the orbit of the storage ring K4 is proposed for a low intensity radioactive beam obtained from this beam line. 8 refs., 6 figs., 1 tab

Polarized epithermal neutron studies of magnetic domains

International Nuclear Information System (INIS)

Alfimenkov, V.P.; Chernikov, A.N.; Lason, L.; Mareev, Y.D.; Novitsky, V.V.; Pikelner, L.B.; Skoy, V.R.; Tsulaya, M.I.; Gould, C.R.; Haase, D.G.; the Triangle Universities Nuclear Laboratory, Durham, North Carolina; Roberson, N.R.; the Triangle Universities Nuclear Laboratory, Durham, North Carolina

1997-01-01

The average size and shape of magnetic domains in a material can be determined from the precession of polarized neutrons traversing the material. Epithermal neutrons (0.5eV n <100eV), which precess more slowly than thermals, effectively probe the internal structure of samples that are thick or have large domains or large internal fields. Such epithermal neutron measurements require a neutron polarizer and analyzer based on cryogenically polarized spin filters. We discuss the measurement at JINR, Dubna, of magnetic domains in a 2.0 cm. diam. crystal of holmium using 1.7 to 59 eV neutrons polarized by a dynamically polarized proton target and analyzed with a statically polarized dysprosium target. copyright 1997 American Institute of Physics

Test facility for investigation of heating of 30 GHz accelerating structure imitator for the CLIC project

CERN Document Server

Elzhov, A V; Kaminsky, A K; Kuzikov, S V; Perelshtejn, E A; Peskov, N Yu; Petelin, M I; Sedykh, S N; Sergeev, A P; Sergeev, A S; Syratchev, I V; Zaitsev, N I

2004-01-01

Since 2001 an experimental test facility for investigation of lifetime of a copper material, with respect to multiple RF pulse actions, was set up on the basis of the JINR (Dubna) FEM oscillator, in collaboration with IAP RAS (Nizhny Novgorod). A high-Q copper cavity, which simulates the parameters of the accelerating structure of the collider CLIC at an operating frequency of 30GHz, is used in the investigation. The experimental setup consists of a wavebeam injector - FEM oscillator (power of similar to 25MW, pulse duration up to 200ns, spectral bandwidth not higher than 0.1%), a quasi-optic two-mirror transmission line, a wave-type converter, and a testing cavity. The frequency and transmission features of the components of the quasi-optic line were analyzed.

High magnetic field uniformity superconducting magnet for a movable polarized target

International Nuclear Information System (INIS)

Anishchenko, N.G.; Bartenev, V.D.; Blinov, N.A.

1998-01-01

The superconducting polarizing magnet was constructed for movable polarized target (MPT) with working volume 200 mm long and 30 mm in diameter. The magnet provides a polarizing magnetic field up to 6 T with the uniformity of 4.5 x 10 -4 in the working volume of the target. The magnet windings are made of a NbTi wire, impregnated with the epoxy resin and placed in the horizontal cryostat with 'warm' aperture diameter of 96 mm. The design and technology of the magnet winding are described. Results of the magnetic field map measurements using a NMR-magnetometer are given. The MPT set-up is installed in the beam line of polarized neutrons produced by break-up of polarized deuterons extracted from the Synchrophasotron of the Laboratory of High Energies (LHE), JINR, Dubna

The one-loop effects in the electroweak Glashow-Weinberg-Salam theory

International Nuclear Information System (INIS)

Christova Christova, P.

1987-01-01

In the near future the experiment will reach a great precision and will be able to test the standard electroweak theory. It is important now to put in order calculations of radiative corrections in this theory and to make correct and exact present theoretical predictions for the measured quantities. The survey of some results of group working in the JINR, Dubna, may serve this aim. We discuss here on-mass-shell renormalization scheme in the unitary gauge; the one-loop amplitudes of both charge and neutral currents-induced fermion scatterings; the large constant effects; the dynamical behaviour of the one-loop neutral-current corrections; the calculation of the W-and Z-boson masses; the difference between the various Weinberg parameters sin 2 Θ W . 44 refs., 10 figs., 1 tab. (author)

Transmutation studies using SSNTD and radiochemistry and the associated production of secondary neutrons

CERN Document Server

Brandt, R; Wan, J S; Schmidt, T; Langrock, E J; Vater, P; Adam, J; Bamblevski, V P; Bradnova, V; Gelovani, L K; Kalinnikov, V K; Krivopustov, M I; Kulakov, B A; Sosnin, A N; Perelygin, V P; Pronskikh, V S; Stegailov, V I; Tsoupko-Sitnikov, V M; Modolo, G; Odoj, R; Philippen, P W; Adloff, J C; Pape, F; Debeauvais, M; Zamani-Valassiadou, M; Hashemi-Nezhad, S R; Dwivedi, K K; Guo Shi Lun; Li, L; Wang, Y L; Wilson, B

1999-01-01

Experiments using 1.5 GeV, 3.7 GeV and 7.4 GeV protons from the Synchrophasotron, LHE, JINR, Dubna, Russia, on extended Pb- and U- targets were carried out using SSNTD and radiochemical sensors for the study of secondary neutron $9 fluences. We also carried out first transmutation studies on the long-lived radwaste nuclei /sup 129/I and /sup 237/Np. In addition, we carried out computer code simulation studies on these systems using LAHET and DCM/CEM codes. We $9 have difficulties to understand rather large transmutation rates observed experimentally when they are compared with computer simulations. There seems to be a rather fundamental problem understanding the large transmutation rates as $9 observed experimentally in Dubna and CERN, as compared to those theoretical computer simulations mentioned above. (10 refs).

SIMONE: Tool for Data Analysis and Simulation

International Nuclear Information System (INIS)

Chudoba, V.; Hnatio, B.; Sharov, P.; Papka, Paul

2013-06-01

SIMONE is a software tool based on the ROOT Data Analysis Framework and developed in collaboration of FLNR JINR and iThemba LABS. It is intended for physicists planning experiments and analysing experimental data. The goal of the SIMONE framework is to provide a flexible system, user friendly, efficient and well documented. It is intended for simulation of a wide range of Nuclear Physics experiments. The most significant conditions and physical processes can be taken into account during simulation of the experiment. The user can create his own experimental setup through the access of predefined detector geometries. Simulated data is made available in the same format as for the real experiment for identical analysis of both experimental and simulated data. Significant time reduction is expected during experiment planning and data analysis. (authors)

Production of photofission fragments and study of their nuclear structure by laser spectroscopy

International Nuclear Information System (INIS)

Gangrskij, Yu.P.; Zemlyanoj, S.G.; Karaivanov, D.V.; Marinova, K.P.; Markov, B.N.; Mel'nikova, L.M.; Myshinskij, G.V.; Penionzhkevich, Yu.Eh.; Zhemenik, V.I.

2005-01-01

The prospective nuclear structure investigations of the fission fragments by resonance laser spectroscopy methods are discussed. Research in this field is currently being carried out as part of the DRIBs project, which is under development at the Laboratory of Nuclear Reactions, JINR. The fission fragments under study are mainly very neutron-rich nuclei near the proton (Z=50) and neutron (N=50 and 82) closed shells, nuclei in the region of strong deformation (N>60 and N>90) and nuclei with high-spin isomeric states. Resonance laser spectroscopy is used successfully in the study of the structure of such nuclei. It allows one to determine a number of nuclear parameters (mean-square charge radius, magnetic dipole and electric quadrupole moments) and to make conclusions about the collective and single particle properties of the nuclei

Experiments at the Dubna synchrophasotron

International Nuclear Information System (INIS)

Kuznetsov, A.A.

1982-01-01

A brief review of the current state of the program of experimental research at the Dubna synchrophasotron in the field relativistic nuclear physics is given. Some attention is being given to unique possibilities which one has at the High Energy Laboratory, JINR to carry ecently by different groups of our t these studies and to the most significant physical results obtained physicists in the field of relativistic nuclear physics. Systematic investigations of multiple production processes of fragments and particles in interactions of relativistic nuclei allowed one to clarify a gene a general picture (dynamics) of these processes. The search for ''exotic'' states not described by conventional quark models enables to observe the existence of some of this type particles: dibaryon strange resonances, resonance state with isotopic spin 5/2 and so on

Short description of BMS/BMF MDT chamber production for the muon spectrometer of the ATLAS experiment

International Nuclear Information System (INIS)

Barashkov, A.V.; Glonti, G.L.; Gongadze, A.L.; Gongadze, I.B.; Gostkin, M.I.; Gus'kov, A.V.; Dedovich, D.V.; Demichev, M.A.; Evtukhovich, P.G.; Elagin, A.L.; Zhemchugov, A.S.; Il'yushenko, E.N.; Kotov, S.A.; Kotova, T.I.; Korolevich, Ya.V.; Kruchonok, V.G.; Krumshtejn, Z.V.; Kuznetsov, N.K.; Lomidze, D.D.; Nikolaev, K.V.; Potrap, I.N.; Rudenko, T.O.; Kharchenko, D.V.; Tskhadadze, Eh.G.; Chepurnov, V.F.; Shelkov, G.A.; Shiyakova, M.M.; Shcherbakov, A.A.; Podkladkin, S.Yu.

2005-01-01

The method of assembly of the MDT chambers for the muon spectrometer of the ATLAS experiment is described. During 2000-2004 ∼ 25000 drift tubes were produced at the DLNP, JINR. The tubes were assembled into 84 muon chambers of BMS/BMF type, one of the six main types for the barrel part of the ATLAS muon spectrometer. Particle momenta must be measured in the ATLAS spectrometer with very high precision (2% at 100 GeV/c and 10% at 1000 GeV/c), which required to produce the coordinate detectors with very high (∼80 μm) precision. We describe the method of assembly of large-scale 5-10 m 2 muon chambers with the signal wire mean deviation from the nominal position less than 20 μm

Current Experiments in Particle Physics (September 1996)

Energy Technology Data Exchange (ETDEWEB)

Galic, H.; Lehar, F.; Klyukhin, V.I.; Ryabov, Yu.G.; Bilak, S.V.; Illarionova, N.S.; Khachaturov, B.A.; Strokovsky, E.A.; Hoffman, C.M.; Kettle, P.-R.; Olin, A.; Armstrong, F.E.

1996-09-01

This report contains summaries of current and recent experiments in Particle Physics. Included are experiments at BEPC (Beijing), BNL, CEBAF, CERN, CESR, DESY, FNAL, Frascati, ITEP (Moscow), JINR (Dubna), KEK, LAMPF, Novosibirsk, PNPI (St. Petersburg), PSI, Saclay, Serpukhov, SLAC, and TRIUMF, and also several proton decay and solar neutrino experiments. Excluded are experiments that finished taking data before 1991. Instructions are given for the World Wide Web (WWW) searching of the computer database (maintained under the SLAC-SPIRES system) that contains the summaries. This report contains full summaries of 180 approved current and recent experiments in elementary particle physics. The focus of the report is on selected experiments which directly contribute to our better understanding of elementary particles and their properties such as masses, widths or lifetimes, and branching fractions.

The Dipole Magnet Design for the ALICE DiMuon Arm Spectrometer

CERN Document Server

Akishin, P G; Blinov, N; Boguslavsky, I V; Cacaut, D E; Danilov, V; Datskov, V I; Golubitsky, O M; Kalimov, A; Kochournikov, E; Lyubimtsev, A; Makarov, A; Mikhailov, K; Olex, I; Popov, V; Semashko, S; Shabunov, A; Shishov, Yu A; Shurygin, A; Shurygina, M; Sissakian, A N; Swoboda, Detlef; Vodopyanov, A S

2002-01-01

An essential part of the DiMuon Arm Spectrometer of the ALICE experiment is a conventional Dipole Magnet of about 890 tons which provides the bending power to measure the momenta of muons. The JINR engineering design of the Dipole Magnet, technical characteristics and description of the proposed manufacturing procedure are presented. The proposed Coil fabrication technique is based on winding of flat pancakes, which are subsequently bent on cylindrical mandrels. The pancakes are then stacked and cured with prepreg insulation. The method is demonstrated on hand of the prototype II, which consists of a pancake made with full-size aluminium conductor. Some details of electromagnetic and mechanical calculations are described. The results of measuring of mechanical and electrical characteristics of materials related to the coil composite structure are discussed.

Software for investigations of inclusive reactions in anti pp interactions

International Nuclear Information System (INIS)

Badalyan, S.G.; Batyunya, B.V.; Govorun, N.N.; Dirner, A.; Ivanov, V.G.

1981-01-01

In connection with the inclusive reaction studying carried out on the 2 m ''Ludmila'' hydrogen bubble chamber in the antiproton beam the complex of programs has been created. This complex is intended for solving the following tasks: space reconstruction, combining several reconstuction results in the same event, preparing the data summary tapes. The complex has been realized on the CDC-6500 computer (JINR). It consists of the HYDRA system application programs and is used for writing permanent files on private disk packages. Using these disks for writing and reading the intermediate data provides an effective operation of central processors and minimum time of peripheral processor operation. The program chain considered allows one to handle events of any mulltiplicity with the speed of 500-600 event per hour [ru

The laser-based calibration system of delta spectrometer

Energy Technology Data Exchange (ETDEWEB)

Malakhov, A.I. [Veksler and Baldin Laboratory of High Energies, JINR, Dubna (Russian Federation); Anisimov, Yu.S. [Veksler and Baldin Laboratory of High Energies, JINR, Dubna (Russian Federation); Gmuca, S. [Inst. of Physics, SAS, Bratislava (Slovakia); Kizka, V.A. [Veksler and Baldin Laboratory of High Energies, JINR, Dubna (Russian Federation); Kliman, J. [Veksler and Baldin Laboratory of High Energies, JINR, Dubna (Russian Federation); Inst. of Physics, SAS, Bratislava (Slovakia); Krasnov, V.A. [Veksler and Baldin Laboratory of High Energies, JINR, Dubna (Russian Federation); Kurepin, A.B. [Inst. for Nuclear Research RAS, Moscow (Russian Federation); Kuznetsov, S.N. [Veksler and Baldin Laboratory of High Energies, JINR, Dubna (Russian Federation); Livanov, A.N. [Veksler and Baldin Laboratory of High Energies, JINR, Dubna (Russian Federation); Matousek, V. [Inst. of Physics, SAS, Bratislava (Slovakia); Morhac, M. [Inst. of Physics, SAS, Bratislava (Slovakia)]. E-mail: Miroslav.Morhac@savba.sk; Turzo, I. [Inst. of Physics, SAS, Bratislava (Slovakia)

2006-10-15

We present a report on a laser calibration system of DELTA spectrometer that has been designed and developed in the Laboratory of High Energies, JINR, Dubna. The system is intended for monitoring and continuous stabilization of the outputs of the detectors of the spectrometer. The UV nitrogen pulse laser along with optical filters, collection of optical fibers and plastic scintillators serving for conversion of UV light pulses to longer wavelength and for diffusion of the light beam to illuminate 300 photomultipliers are used. We stabilize the positions of laser peaks by corrections of high voltages of the corresponding photomultipliers. The proposed system allows one to accomplish the stabilization during the experiment with the use of the same electronics. The control software together with the first results from test runs are described as well.

Fan analyzer of neutron beam polarization on REMUR spectrometer at IBR-2 pulsed reactor

International Nuclear Information System (INIS)

Nikitenko, Yu.V.; Ul'yanov, V.A.; Pusenkov, V.M.; Kozhevnikov, S.V.; Jernenkov, K.N.; Pleshanov, N.K.; Peskov, B.G.; Petrenko, A.V.; Proglyado, V.V.; Syromyatnikov, V.G.; Schebetov, A.F.

2006-01-01

The new spectrometer of polarized neutrons REMUR has been created and put in operation in the Frank Laboratory of Neutron Physics (JINR, Dubna). The spectrometer is dedicated to investigations of multiplayer structures and surfaces by registering the reflection of polarized neutrons and of the inhomogeneous state of solid matter by measuring the small-angle scattering of polarized neutrons. The spectrometer's working range of neutron wavelengths is 1.5-10 A. The spectrometer is equipped with a linear position-sensitive detector and a focused supermirror polarization analyzer (fan-like polarization analyzer) with a solid angle of neutron detection of 2.2x10 -4 rad. This article describes the design and the principle of operation of the fan analyzer of neutron polarization together with the results of its tests on a polarized neutron beam

Independent Yields of Kr and Xe Fragments at Photofission of Odd Nuclei ^{237}Np and ^{243}Am

CERN Document Server

Gangrsky, Yu P; Myshinskii, G V; Penionzhkevich, Yu E

2004-01-01

he independent yields of fragments Kr (A=89-93) and Xe (A=135-142) at photofission of odd nuclei 237Np and 243Am are presented. The experiments were performed using the bremsstrahlung of 25 MeV electrons on the microtron of FLNR, JINR. A technique was used that included the transportation of fragments which escaped from the target with the gas flow through a capillary and the condensation of inert gases in a cryostat at the temperature of liquid nitrogen. Kr and Xe isotopes were identified by the spectra of their daughter products. The mass number distributions of the independent yields of Kr and Xe isotopes and of the complementary fragments (Y and La at the photofission of ^{237}Np and Nb and Pr at the photofission of ^{243}Am) were obtained.

Cyclotron method for heavy ion acceleration

International Nuclear Information System (INIS)

Gikal, B.N.; Gul'bekyan, G.G.; Kutner, V.B.; Oganesyan, R.Ts.

1984-01-01

Studies on heavy ion beams in a wide range of masses (up to uranium) and energies disclose essential potential opportunities for solution of both fundamental scientific and significant economical problems. A cyclotron method for heavy ion acceleration is considered. Development of low and medium energy heavy ion accelerators is revealed. The design of a complex comprising two isochronous cyclotrons which is planned to be constrdcted 1n the JINR is described. The cyclotron complex includes the U-400 and the U-400 M cyclotrons and it is intended for acceleration of both 35-20 MeV/nucleon superheavy ions such as Xe-U and 120 MeV/nucleon light ions. Certain systems of the accelerators are described. Prospects of the U-400 and the U-400 M development are displayed

Research coordination meeting of the coordinated research project on analytical and experimental benchmark analyses of accelerator driven systems. Working material

Energy Technology Data Exchange (ETDEWEB)

NONE

2006-07-01

The Technical Meeting hosted at the Belarus National Academy of Sciences in Minsk by the Joint Institute of Power Engineering and Nuclear Research 'SOSNY' from 5-9 December 2005 was the kick-off Research Coordination Meeting (RCM) of the IAEA Coordinated Research Project (CRP) on 'Analytical and Experimental Benchmark Analyses of Accelerator Driven Systems (ADS)'. The CRP had received proposals for research agreements and contracts from scientists representing the following 25 institutions: Centro Atomico Bariloche, SCK CEN Mol, Instituto de Pesquisas Energeticas e Nucleares Sao Paulo, Joint Institute of Power Engineering and Nuclear Research SOSNY Minsk, China Institute of Atomic Energy, CEA Cadarache, CNRS Paris, FZ Rossendorf, FZ Karlsruhe, Budapest University of Technology and Economics, Politecnico di Torino, Japan Atomic Energy Agency, Nuclear Research and Consultancy Group (NRG) Petten, Pakistan Institute of Nuclear Science and Technology, AGH-University of Science and Technology Krakow, Institute of Atomic Energy Otwock/Swierk, ITEP Moscow, MEPHI Moscow, Kurchatov Institute, JINR Dubna, Universidad Politecnica de Madrid, CIEMAT Madrid, Royal Institute of Technology Stockholm, National Science Center 'Kharkov Institute and Technology', and Argonne National Laboratory). These institutions represent 18 IAEA Member States (i.e., Argentina, Belarus, Belgium, Brazil, China, France, Germany, Hungary, Italy, Japan, Netherlands, Pakistan, Poland, Russia, Spain, Sweden, Ukraine, USA), and one International Organization (JINR Dubna). The overall objective of the CRP is contributing to the generic R and D efforts in various fields common to innovative fast neutron system development, i.e., heavy liquid metal thermal hydraulics, dedicated transmutation fuels and associated core designs, theoretical nuclear reaction models, measurement and evaluation of nuclear data for transmutation, and development and validation of calculational methods and codes. Ultimately, the CRP

Production and acceleration of Ca-beams with the ECR source in the Jinr-Ganil experiment

International Nuclear Information System (INIS)

Lukyanov, S.M.; Artukh, A.G.; Gvozdev, B.A.; Kutner, V.B.; Penionzhkevich, Y.E.; Bex, L.; Bourgarel, M.P.; Ferme, J.

1989-01-01

The results of production and acceleration of 48 Ca-beams with the ECR-source are described. For this purpose a special technique has been developed which allows the metal to be extracted from the oxide with the aluminium as an acceptor. The mean rate of consumption of 48 Ca was about 2 mg/h and the beam intensity was about 15μA on charge state 6. The method for recuperation of used calcium is presented

An introduction to gauge theories

International Nuclear Information System (INIS)

Iliopoulos, J.

1977-01-01

The CERN-JINR School of Physics is meant to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. This paper presents an introduction to gauge theories: the systematics of Yang-Mills theories, spontaneous symmetry breaking, and Higgs mechanism. The treatment is simple, stressing the general principles rather than detailed calculations. The author presents the Weinberg-Salam model as an example of a renormalizable theory of weak and electromagnetic interactions of leptons, and it is shown that the extension of these ideas into the hadronic world requires the introduction of charm and colour. Finally, an attempt is made to include strong interactions into the scheme, guided by the experimental results of deep-inelastic lepton-nucleon scattering. The Callan-Symanzik equation, and the concepts of asymptotic freedom and quark confinement are introduced. (Auth.)

A fan analyzer of neutron beam polarization on the spectrometer REMUR at the pulsed reactor IBR-2

International Nuclear Information System (INIS)

Ul'yanov, V.A.; Pusenkov, V.M.; Pleshanov, N.K.

2004-01-01

The new spectrometer of polarized neutrons REMUR has been created and put in operation at the Frank Laboratory of Neutron Physics (JINR, Dubna). The spectrometer is dedicated to investigations of multilayer structures and surfaces by registering the reflection of polarized neutrons and of the inhomogeneous state of solid matter by measuring the small-angle scattering of polarized neutrons. The spectrometer's working range of neutron wavelengths is 1.5-10 Angstroem. The spectrometer is equipped with a linear position-sensitive detector and a focused supermirror polarization analyzer (the fan-like polarization analyzer) with a solid angle of polarized neutron detection of 2.2·10 -4 rad. This paper describes the design and the principle of operation of the fan analyzer of neutron polarization together with the results of the fan tests on a polarized neutron beam

Application of the mass-spectrometer MASHA for mass-spectrometry and laser-spectroscopy

Science.gov (United States)

Rodin, A. M.; Belozerov, A. V.; Dmitriev, S. N.; Oganessian, Yu. Ts.; Sagaidak, R. N.; Salamatin, V. S.; Stepantsov, S. V.; Vanin, D. V.

2010-02-01

We report the present status of the mass-spectrometer MASHA (Mass-Analyzer of Supper Heavy Atoms) designed for determination of the masses of superheavy elements. The mass-spectrometer is connected to the U-400M cyclotron of the Flerov Laboratory for Nuclear Reactions (FLNR) JINR, Dubna. The first experiments on mass-measurements for 112 and 114 elements will be performed in the upcoming 2010. For this purpose a hot catcher, based on a graphite stopper, is constructed. The α-decay of the superheavy nuclides or spontaneous fission products will be detected with a silicon 192 strips detector. The experimental program of future investigations using the technique of a gas catcher is discussed. It should be regarded as an alternative of the classical ISOL technique. The possibilities are considered for using this mass-spectrometer for laser spectroscopy of nuclei far off-stability.

Application of the mass-spectrometer MASHA for mass-spectrometry and laser-spectroscopy

International Nuclear Information System (INIS)

Rodin, A. M.; Belozerov, A. V.; Dmitriev, S. N.; Oganessian, Yu. Ts.; Sagaidak, R. N.; Salamatin, V. S.; Stepantsov, S. V.; Vanin, D. V.

2010-01-01

We report the present status of the mass-spectrometer MASHA (Mass-Analyzer of Supper Heavy Atoms) designed for determination of the masses of superheavy elements. The mass-spectrometer is connected to the U-400M cyclotron of the Flerov Laboratory for Nuclear Reactions (FLNR) JINR, Dubna. The first experiments on mass-measurements for 112 and 114 elements will be performed in the upcoming 2010. For this purpose a hot catcher, based on a graphite stopper, is constructed. The α-decay of the superheavy nuclides or spontaneous fission products will be detected with a silicon 192 strips detector. The experimental program of future investigations using the technique of a gas catcher is discussed. It should be regarded as an alternative of the classical ISOL technique. The possibilities are considered for using this mass-spectrometer for laser spectroscopy of nuclei far off-stability.

Application of the mass-spectrometer MASHA for mass-spectrometry and laser-spectroscopy

Energy Technology Data Exchange (ETDEWEB)

Rodin, A. M., E-mail: rodin@nrmail.jinr.ru; Belozerov, A. V.; Dmitriev, S. N.; Oganessian, Yu. Ts.; Sagaidak, R. N.; Salamatin, V. S.; Stepantsov, S. V.; Vanin, D. V. [JINR, Flerov Laboratory of Nuclear Reactions (Russian Federation)

2010-02-15

We report the present status of the mass-spectrometer MASHA (Mass-Analyzer of Supper Heavy Atoms) designed for determination of the masses of superheavy elements. The mass-spectrometer is connected to the U-400M cyclotron of the Flerov Laboratory for Nuclear Reactions (FLNR) JINR, Dubna. The first experiments on mass-measurements for 112 and 114 elements will be performed in the upcoming 2010. For this purpose a hot catcher, based on a graphite stopper, is constructed. The {alpha}-decay of the superheavy nuclides or spontaneous fission products will be detected with a silicon 192 strips detector. The experimental program of future investigations using the technique of a gas catcher is discussed. It should be regarded as an alternative of the classical ISOL technique. The possibilities are considered for using this mass-spectrometer for laser spectroscopy of nuclei far off-stability.

Excitation of long living isomers 107m,109m Ag in the fast neutron inelastic scattering reactions

International Nuclear Information System (INIS)

Alpatov, V.G.; Borzakov, S.B.; Chinaeva, V.P

1999-01-01

The cross sections for excitation of 107m,109m Ag isomeric states are measured in the reactions of inelastic scattering of reactor fast neutrons. The measurements were performed on the rabbit tube 'Regata' of the IBR-2 reactor (JINR, Dubna). The method consisted in comparing the γ-line intensities of silver isomers with the 103m Rh isomer irradiated in the same neutron flux. The cross sections of 103 Rh are well known in wide range of neutron energy. The measured values are the following: σ( 107m Ag) = 204 ± 18 mb, σ( 109m Ag) = 262 ± 26 mb. The estimate is made of the possible yield of 109m Ag isomeric nuclei if one uses the high-current proton accelerator with heavy target to produce fast neutrons in reactions of spallation. (authors)

Millimeter-wave FEL-oscillator with a new type Bragg resonator: advantages in efficiency and selectivity

CERN Document Server

Ginzburg, N S; Kaminsky, A K; Peskov, N Yu; Sedykh, S N; Sergeev, A P

2000-01-01

An FEL-oscillator with a new type of Bragg resonator was realized on the basis of linac LIU-3000 (JINR, Dubna) (0.8 MeV/200 A/200 ns). This resonator consists of two corrugated waveguide sections having a step of phase pi between the corrugations at the point of connection. The selective properties of a resonator of this type are significantly improved in comparison with a traditional two-mirror Bragg resonator. The output power was about 50 MW at a frequency of 30.7 GHz with the optimal parameters of the resonator, which corresponds to the efficiency of 35%, which is the highest for millimeter wavelength FEL. Radiation at the fundamental mode and the two side modes with the frequencies coincided to the 'cold' microwave testing was separately observed depending on the magnetic fields of the wiggler and solenoid.

Impact of the beam pipe design on the operation parameters of the superconducting magnets for the SIS 100 synchrotron of the FAIR project

International Nuclear Information System (INIS)

Fischer, E; Schnizer, P; Mierau, A; Shim, S; Heil, C; Schnizer, B

2010-01-01

The SIS 100 accelerator of the Facility for Antiprotons and Ion Research (FAIR) at GSI Darmstadt will be the world's second fast ramped synchrotron utilising superconducting magnets in heavy ion research facilities. The request for high current Uranium beams requires vacuum of extremely high quality that can be achieved in long term operation only by cold vacuum chambers acting as a cryogenic pump. Its mechanical stable design options are strongly limited by AC loss generation and field distortion problems. Previous R and D indicated that cooling tubes, keeping the vacuum chamber below 15 K, create large additional eddy currents and thus deteriorate the field with a sextupole. This effect is most dominant at the start of the ramp. The ramp rate of the correctors is limited by the maximum available voltage and as by the heat created on the ramp up and the cooling efficiency of the Nuclotron-type cable. Thus we investigate different means to simplify the vacuum chamber design keeping its temperature below 15 K in the area where the highest suction pumping is required with alternative cooling methods as well as on the compensation margin the sextupole correctors can provide. This work was partly supported by the BMBF.

Industrial Sterilization st the Electron Linear-Accelerator Facility at Risoe; Sterilisation industrielle a l'aide de l'accelerateur lineaire d'electrons de Riso; Promyshlennaya sterilizatsiya oblucheniem na linejnom uskoritele ehlektronov v Rizo; Esterilizacion industrial con ayuda del acelerador lineal de electrones de Riso

Energy Technology Data Exchange (ETDEWEB)

Brynjolfsson, A.; Holm, N. W.; Tharup, G.; Sehested, K. [Accelerator Section, Danish Atomic Energy Commission, Research Establishment Risoe (Denmark)

1963-11-15

por contrato con empresas industriales. El acelerador produce un haz electronico estable de 10 MeV con una potencia media de 5 kW. El haz puede extraerse en linea recta o a traves de un dispositivo desviador y barredor. Este ultimo se emplea en las irradiaciones industriales. El material que se ha de irradiar atraviesa el campo en una cinta transportadora de velocidad regulable entre 0,2 y 600 mm/s, lo que permite variar la dosis en un intervalo muy grande sin modificar el ajuste del acelerador. El aparato funciona desde el otofio de 1960 para las instituciones cientificas de Dinamarca, y, a partir de 1961, tambien para la esterilizacion de instrumentos medicos, por ejemplo, jeringas, sondas, aparatos para transfusion e infusion, etc. El numero de articulos tratados aumento regularmente, habiendose irradiado unos 3000 paquetes en el primer trimestre de 1963. Cada paquete puede contener, por ejemplo, 900 jeringas de 2 cm. Se han dedicado muchos esfuerzos a mejorar las tecnicas de irradiacion, estudiandose entre otros aspectos el empleo de sistemas reflectores, la regulacion automatica de la dosis, el control dosimetrico y el empleo de indicadores cromaticos. La memoria revisa sucintamente estos importantes detalles tecnicos y describe los procesos de manipulacion, control y dosimetria empleados en la esterilizacion. Para terminar, proporciona algunos datos sobre el costo de explotacion del proceso. (author) [Russian] Poluchenie doz vysokikh moshchnostej na moshchnykh uskoritelyakh yavlyaetsya tsennym v smysle vozmozhnosti provedeniya teoreticheskikh, fizicheskikh i khimicheskikh issledovanij i takzhe opytnoj ehkspluatatsii ustanovok do promyshlennogo vnedreniya protsessov. Linejnyj uskoritel' v .Rizo ispol'zuetsya dlya takikh tselej i, v tom chisle, dlya oblucheniya meditsinskikh priborov dlya promyshlennykh firm po kontraktam. Ehtot linejnyj uskoritel' daet ustojchivyj puchok ehlektronov s ehnergiej 10 Mehv i srednej moshchnost'yu 5 kvt. Puchok mozhet byt' napravlen

Software of image processing system on the JINR basic computers and problems of its further development

International Nuclear Information System (INIS)

Ivanov, V.G.

1978-01-01

To process picture information on the basis of BESM-6 and CDC-6500 computers, Joint Institute for Nuclear Research has developed a set of programs which enables the user to restore a spatial picture of measured events and calculate track parameters, as well as kinematically identify the events and to select most probable hypotheses for each event. A wide-scale use of programs which process picture data obtained via various track chambers requires quite a number of different options of each program. For this purpose, a special program, PATCHY editor, has been developed to update, edit and assemble large programs. Therefore, a partitioned structure of the programs has been chosen which considerably reduces programming time. Basic problems of picture processing software are discussed and the fact that availability of terminal equipment for BESM-6 and CDC-6500 computers will help to increase the processing speed and to implement interactive mode is pointed out. It is also planned to develop a training system to help the user learn how to use the programs of the system

Controllable Pulse Frequency and Width System for Pulsing and Modulating Fast-Neutron Core Assemblies; Systeme a Frequence et Largeur d'Impulsions Ajustables Permettant la Pulsation et la Modulation de Milieux Multipliants Sous-Critiques a Neutrons Rapides; Sistema reguliruemykh chastoty i shiriny impul'sa, dayushaya impul's i modulyatsiyu razmnozhayushchikh sred na bystrykh nejtronakh; Sistema de Frecuencia y Amplitud de Impulso Ajustables, para Pulsar y Modular

Energy Technology Data Exchange (ETDEWEB)

Duquesne, M.; Lyon, F.; Schmitt, A. [Association Euratom-CEA-SECNR (France); Nucleaires de Cadarache, Centre d' Etudes [France; Gerbier, R. [Laboratoire des Accelerateurs - CEN de Grenoble (France); Nucleaires de Cadarache, Centre d' Etudes [France

1965-10-15

razonables retardando adecuadamente el segundo impulso con relacion al primero. En ciertos casos el tiempo de transito de los iones en las placas no es despreciable con respecto al tiempo durante el cual se aplica el incremento de tension. En estas circunstancias, se sustituye una de las placas por una lfnea de onda progresiva a la que se aplican sucesivamente los dos impulsos. El impulso de tension acompana asi al paquete de deuterones que produce el impulso. Los frentes de impulsos pueden reducirse, de este modo, a menos de 4 ns. Los generadores de tension escalonada estan transistorizados en sus primeras etapas. Los tubos de salida estan constituidos por valvulas de disco sellado que permiten obtener un incremento de tension de 1500 V en algunos nanosegundos. Los autores han utilizado un doble tetrodo de 50 MHz para los impulsos destinados a la lfnea de retardo. El sistema de deteccion emplea un dispositivo de centelleo y un fotomulti piicador cuyo circuito comprende un conjunto coincidencias-anticoincidencias, un analizador de tiempos y un registrador numerico. (author) [Russian] Nami razrabotana sistema, kotoraja daet vozmozhnost' poluchat' nejtronnye impul'sy nezavisimo ot reguliruemoj shiriny i chastoty sledovanija. Vremja narastanija i zatuhanija jetih impul'sov so- stavljaetporjadkaneskol'kihnanosekund. Dannaja sistema ispol'zuetsja pri provedenii impul'snyh i moduliruemyh opytov vysokoj chastoty. Dlja poluchenija nejtronnyh impul'sov s bystrym zatuhaniem primenjaetsja otklonenie puchka chistyh dejtonov, kotorye predvaritel'no byli uskoreny i otobrany. Iony, kotorye ne javljajutsja Dejtonami, byli ustraneny posle uskorenija v sortirovochnom magnite pri 10 Degree-Sign . Nami izuchalas' takzhe sistema otbora pered uskoreniem, kotoraja imela by preimushhestvo v vide umen'shennyh gabaritnyh razmerov. Puchok dejtonov prohodit cherez prostranstvo, nahodjashheesja mezhdu dvumja plastinkami, gde obychno imeetsja jelektrostaticheskoe pole, otklonjajushhee puchok na stenki

Department of Cosmic Ray Physics; Overview

International Nuclear Information System (INIS)

Szabelski, J.

2003-01-01

Full text: Department of Cosmic Ray Physics in Lodz is involved in basic research in the area of high-energy physics and cosmic ray physics related to: - Experimental and phenomenological studies of Extensive Air Showers induced by cosmic ray particles. - Studies of ultra-high energy (above 10 19 eV) cosmic rays: determination of energy spectrum and mass composition of primary particles - Studies of asymptotic properties of hadronic interactions based on the analysis of cosmic ray propagation through the atmosphere. - Studies of mass composition of cosmic rays in the energy range 10 15 - 10 17 eV. - Registration of cosmic ray intensity variation correlated with solar activity. Theoretical and experimental studies of Extensive Air Shower properties are performed mostly basing on the results obtained by the Lodz Extensive Air Shower Array. We have noticed unexplainable delayed signals registered about 500-900 microseconds after the main EAS pulse. Neutron transport simulations were performed in collaboration with JINR in Dubna. We prepared hardware for further experimental study of this effect. Continuous registrations of 5 GeV muon flux with the underground muon telescope have been carried on over the year 2001. We have detected several changes of muon intensity correlated with Forbush decreases registered at lower energies. We have also started registrations of muon counting rate in the on-surface scintillation detectors. These measurements will be included to the analysis of the disturbed energy spectrum of primary cosmic rays and its dependence on interplanetary disturbances related to the solar activity. In construction and data interpretation of cosmic ray experiments the Lodz group collaborates with many foreign institutes and laboratories: Forschungszentrum in Karlsruhe (Germany), College de France, Institute for Nuclear Studies of the Russian Academy of Sciences, JINR in Dubna (Russia), Uppsala University (Sweden) and DESY (Germany). We have prepared a

Representation of radiative strength functions within a practical model of cascade gamma decay

Energy Technology Data Exchange (ETDEWEB)

Vu, D. C., E-mail: vuconghnue@gmail.com; Sukhovoj, A. M., E-mail: suchovoj@nf.jinr.ru; Mitsyna, L. V., E-mail: mitsyna@nf.jinr.ru; Zeinalov, Sh., E-mail: zeinal@nf.jinr.ru [Joint Institute for Nuclear Research (Russian Federation); Jovancevic, N., E-mail: nikola.jovancevic@df.uns.ac.rs; Knezevic, D., E-mail: david.knezevic@df.uns.ac.rs; Krmar, M., E-mail: krmar@df.uns.ac.rs [University of Novi Sad, Department of Physics, Faculty of Sciences (Serbia); Dragic, A., E-mail: dragic@ipb.ac.rs [Institute of Physics Belgrade (Serbia)

2017-03-15

A practical model developed at the Joint Institute for Nuclear Research (JINR, Dubna) in order to describe the cascade gamma decay of neutron resonances makes it possible to determine simultaneously, from an approximation of the intensities of two-step cascades, parameters of nuclear level densities and partial widths with respect to the emission of nuclear-reaction products. The number of the phenomenological ideas used isminimized in themodel version considered in the present study. An analysis of new results confirms what was obtained earlier for the dependence of dynamics of the interaction of fermion and boson nuclear states on the nuclear shape. From the ratio of the level densities for excitations of the vibrational and quasiparticle types, it also follows that this interaction manifests itself in the region around the neutron binding energy and is probably different in nuclei that have different parities of nucleons.

Status report on the development of a tubular electron beam ion source

International Nuclear Information System (INIS)

Donets, E.D.; Donets, E.E.; Becker, R.; Liljeby, L.; Rensfelt, K.-G.; Beebe, E.N.; Pikin, A.I.

2004-01-01

The theoretical estimations and numerical simulations of tubular electron beams in both beam and reflex mode of source operation as well as the off-axis ion extraction from a tubular electron beam ion source (TEBIS) are presented. Numerical simulations have been done with the use of the IGUN and OPERA-3D codes. Numerical simulations with IGUN code show that the effective electron current can reach more than 100 A with a beam current density of about 300-400 A/cm 2 and the electron energy in the region of several KeV with a corresponding increase of the ion output. Off-axis ion extraction from the TEBIS, being the nonaxially symmetric problem, was simulated with OPERA-3D (SCALA) code. The conceptual design and main parameters of new tubular sources which are under consideration at JINR, MSL, and BNL are based on these simulations

ATLAS barrel toroid integration and test area in building 180

CERN Multimedia

Maximilien Brice

2003-01-01

The ATLAS barrel toroid system consists of eight coils, each of axial length 25.3 m, assembled radially and symmetrically around the beam axis. The coils are of a flat racetrack type with two 'double-pancake' windings made of 20.5 kA aluminium-stabilized niobium-titanium superconductor. The barrel toroid is being assembled in building 180 on the Meyrin site. In the first phase of assembly, the coils are packed into their aluminium-alloy casing. These photos show the double-pancake coils from ANSALDO and the coil casings from ALSTOM. In the foreground is the tooling from COSMI used to turn over the coil casings during this first phase. In the right background is the yellow lifting gantry manufactured at JINR-Dubna, Russia which will transport the coil casings to a heating table for prestressing. Two test benches with magnetic mirror are also visible.

Объединенный институт ядерных исследований в экспериментальной физике элементарных частиц

CERN Document Server

Bednyakov, V A

2017-01-01

In 2016 it was 60 years since the foundation of the Joint Institute for Nuclear Research in Dubna — the international intergovernmental organization leading research in the field of fundamental physics of elementary particles, atomic nuclei and condensed state of matter. A long and very productive way is passed. Looking back, it becomes clear that internationality and multidisciplinarity of the research is a guarantee of successful development (and preservation) of fundamental science. This observation turned out to be especially actual in the experimental field of research. In the review, on the basis of a brief description of the most important results achieved in JINR, an attempt is made to look into the future (for 7-10 years) and show the place of the Institute in solving the most important problems of elementary particle physics - the fundamental field of modern natural science. This look into the future is full of reasonable optimism.

Np-237 incineration study in various beams in ADS setup QUINTA

Directory of Open Access Journals (Sweden)

Kilim Stanisław

2018-03-01

Full Text Available Neptunium-237 samples were irradiated in a spallation neutron field produced in accelerator-driven system (ADS setup QUINTA. Five experiments were carried out on the accelerators at the JINR in Dubna - one in carbon (C6+, three in deuteron, and one in a proton beam. The energy in carbon was 24 GeV, in deuteron 2, 4 and 8 GeV, respectively, and 660 MeV in the proton beam. The incineration study method was based on gamma-ray spectrometry. During the analysis of the spectra several fission products and one actinide were identified. Fission product activities yielded the number of fissions. The actinide (Np-238, a result of neutron capture by Np-237, yielded the number of captures. The main goal of this work was to find out if and how the incineration rate depended on parameters of the accelerator beam.

E-36: First Proto-Megascience Experiment at NAL

Energy Technology Data Exchange (ETDEWEB)

Pronskikh, Vitaly S. [Fermilab

2016-03-01

E-36, an experiment on small angle proton-proton scattering, began testing equipment in the National Accelerator Laboratory’s newly achieved 100-GeV beam on February 12, 1972, marking the beginning of NAL’s experimental program. This experiment, which drew collaborators from NAL, Joint Institute for Nuclear Research (JINR at Dubna, USSR), the University of Rochester (Rochester, New York) and Rockefeller University (New York City) was significant not only as a milestone in Fermilab’s history but also as a model of cooperation between the East and West at a time when Cold War tensions still ran high. An examination of the origin, operation, and resolution of E-36 and the chain of experiments it spawned reveals the complex interplay of science and politics that drove these experiments as well as seeds of the megascience paradigm that has come to dominate high-energy physics research since the 1970s.

Preliminary Tests of the DECRIS-4 Ion Source%DECRIS-4离子源的初步测试结果

Institute of Scientific and Technical Information of China (English)

V.Bekhterev; S.Bogomolov; A.Efremov; G.Gulbekian; Yu.Kostyukhov; A.Lebedev; M.Leporis; V.Loginov; N.Yazvitsky

2007-01-01

The ECR ion source DECRIS一4 has been designed and constructed at the FLNR JINR to be used as a second injector of heavy multiply charged ions for the U-400 cyclotron.The design of the magnetic structure of the source was based on the idea of the so-called"magnetic plateau".The axial magnetic field is formed by three independent solenoids enclosed in separated iron yokes.As a result the superposition of the coils and hexapole magnetic fields creates the enlarged resonance volume.The first experiments showed that the source was able to produce more than 300eμA of Ar8+ when only 100W of microwave power was used.During the last experiment almost 500eμA of Ar8+ was extracted with the same power.In this paper we will present the preliminary results with other gaseous ions,such as oxygen,krypton and xenon.

Enhancements observed in the two-proton invariant mass distribution in the pionless deuteron breakup at 3.3 GeV/c

International Nuclear Information System (INIS)

Dolidze, M.G.; Glagolev, V.V.; Kacharava, A.K.

1986-01-01

A sample of ''non-spectator'' events in the pionless deuteron breakup at a 3.3 Gev/c momentum has been investigated by means of a 1m hydrogen bubble chamber at JINR, Dubna. The two-proton invariant mass spectrum in the charge exchange channel exibits two enhancements for masses of 2010 MeV/c 2 and 2160 Mev/c 2 . Theoretical calculations taking into account one-pion exchange diagrams and virtual pion absorption by the deuteron have been carried out. It has been shown that the enhancement at Msub(pp) = 2010 MeV/c 2 can be explained if there is an irregularity in the behaviour of the off-energy-shell amplitude of the πsup(+)d→pp reaction near the threshold. The observed maximum at Msub(pp) = 2160 Mev/c 2 is caused mainly by intermediate Δ production and pion absorption on the deuteron

Superfluid He testing of titanium-stainless steel transitions fabricated by explosive welding

International Nuclear Information System (INIS)

Budagov, Yu.; Sabirov, B.; Shirkov, G.

2009-01-01

An experimental setup was constructed to test in liquid He bimetallic (titanium-stainless steel) tube joints which were manufactured by an explosive welding method. The leak levels of the samples tested at room temperature 7.5·10 -10 and 7.5·10 -9 Torr·1/s at 77 K, correspondingly, measured at FNAL (Batavia, USA) after the thermocycling have coincided with the earlier results obtained at JINR (Dubna, Russia) and INFN (Pisa, Italy) data for the same samples. For the liquid helium test the tubes were welded in pairs by their titanium ends. At the room temperature the leak level of the three tested samples was 4.9·10 -10 Torr·l/s. At the first cryogenic tests (4-6 K) one of the samples manifested a leak. The investigation will be continued since the explosive welding seems to be a very perspective new generation technology

Particles and nuclei, letters

International Nuclear Information System (INIS)

2001-01-01

The present collection of letters from JINR, Dubna, contains ten separate records on the monochromatic neutrinos from massive fourth generation neutrino annihilation in the Sun and Earth, solar neutrino results from SAGE, the present and future oscillation experiments at reactors, as well as on the possibilities to test the LSND parameters at reactors, the energy spectrum of reactor antineutrinos and searches for new physics (recent developments), angular distribution of radiative gamma quanta in radiative beta decay of neutrons, an 37 Ar based neutrino source for calibration of the iodine solar neutrino detector, detector LENS as a new tool for solar neutrino spectroscopy, limits on different Majoron decay modes of 100 Mo, 116 Cd, 82 Se, and 96 Zr for neutrinoless double beta decays in the NEMO-2 experiment as well as on the search for 76 Ge and 150 Nd double beta decay to excited states

On the nuclear fragmentation mechanisms in nuclear collisions at intermediate and high energies

International Nuclear Information System (INIS)

Jipa, Al.; Besliu, C.; Felea, D.; Iliescu, B.; Ristea, O.; Ristea, M.; Calin, C.; Horbuniev, A.; Arsene, I.; Esanu, T.; Ochesanu, S.; Caramarcu, C.; Bordeianu, C.; Rosu, I.; Grossu, V.; Zgura, I.S.; Stan, E.; Mitu, C.; Potlog, M.; Cherciu, M.; Stefan, I.

2004-01-01

The nuclear fragmentation mechanisms can be discussed taking into account different scales. These scales are related to the fragment sizes. Taking into account the possible different fragmentation mechanisms of the nuclei at the same incident energy an analysis of the experimental results obtained in different experiments performed at the JINR Dubna (Russia), KEK Tsukuba (Japan), GSI Darmstadt (Germany) is done. Results on apparent temperatures, angular distributions, fragment momentum spectra, multiplicities of the intermediate mass fragments are used to analyse the competition between two possible nuclear fragmentation mechanisms, namely: a sudden fragmentation by explosive mechanisms, like shock waves, and a slow fragmentation by the 'fission' of the spectator regions, mainly, because of the interactions with the particles or fragments emitted from the participant region at transverse angles on the incident nucleus, in CMS.Some connections with chaos dynamics and fractal structure of the fragmentation patterns are included. (authors)

Detector for the FSD Fourier-diffractometer based on ZnS(Ag)/6LiF scintillation screen and wavelength shifting fibers readout

International Nuclear Information System (INIS)

Kuz'min, E.S.; Balagurov, A.M.; Bokuchava, G.D.; Zhuk, V.V.; Kudryashev, V.A.; Bulkin, A.P.; Trunov, V.A.

2001-01-01

At the IBR-2 pulsed reactor (FLNP, JINR, Dubna), a specialized time-of-flight instrument Fourier-Stress-Diffractometer (FSD) intended for the measurement of internal stresses in bulk samples by using high-resolution neutron diffraction is under construction. One of the main components of the diffractometer is a new-type detector with combined electronic - geometrical focusing uniting a large solid angle and a small geometry contribution to the instrumental resolution. The first two modules of the detector, based on scintillation screen ZnS(Ag)/ 6 LiF with wavelength shifting fibers readout have been developed and tested. The design of the detector and associated electronics are described. The method of time focusing surface approximation, using the screen flexibility is proposed. Characteristics of the tested modules in comparison with a detector of the previous generation are presented and advantages of the new detector design for high-resolution diffractometry are discussed

Particles and nuclei, letters

International Nuclear Information System (INIS)

2001-01-01

The present collection of letters from JINR, Dubna, contains eight separate records on status of 116 Cd double β decay study with 116 CdWO 4 scintillators, new limits on 2β processes in 40 Ca and 46 Ca by using low radioactive CaF 2 (Eu) crystal scintillators, the single state dominance in 2νββ-decay transitions to excited 0 + and 2 + final states, present status of the MONOLITH project, technique of neutrino-induced muon detection on the Earth surface, high-sensitive spectrometer of fast neutrons and the results of fast neutron background flux measurements at the gallium-germanium solar neutrino experiment (SAGE), new experimental limits on the electron stability and excitation of nuclear levels in 23 Na, 127 I and 129 Xe induced by the electron decay on the atomic shell and element-loaded organic scintillators for neutron and neutrino physics

First assembly phase for the ATLAS toroid coils

CERN Multimedia

Maximilien Brice

2003-01-01

The ATLAS barrel toroid system consists of eight coils, each of axial length 25.3 m, assembled radially and symmetrically around the beam axis. The coils are of a flat racetrack type with two double-pancake windings made of 20.5 kA aluminium-stabilized niobium-titanium superconductor. In the first phase of assembly, the two 'pancakes' are packed into their vacuum vessel. This is done using bladders filled with resin and glass microbeads under pressure. The resin is heated and, once cooled, holds the pancakes in place. The operation has to be performed on both sides of the coil, which necessitated a special technique to turn the coils over and then transport them to the heating table. Photos 01, 02, 03: Transporting the coil to the heating table using a special lifting gantry manufactured at JINR-Dubna, Russia in preparation for the 'bladderisation' operation.

Measurement of the high-energy neutron flux on the surface of the natural uranium target assembly QUINTA irradiated by deuterons of 4- and 8-GeV energy

International Nuclear Information System (INIS)

Adam, J.; Baldin, A.A.; Chilap, V.

2014-01-01

Experiments with a natural uranium target assembly QUINTA exposed to 4- and 8 GeV deuteron beams of the Nuclotron accelerator at the Joint Institute for Nuclear Research (Dubna) are analyzed. The 129 I, 232 Th, 233 U, 235 U, nat U, 237 Np, 238 Pu, 239 Pu and 241 Am radioactive samples were installed on the surface of the QUINTA set-up and irradiated with secondary neutrons. The neutron flux through the RA samples was monitored by Al foils. The reaction rates of 27 Al(n, y 1 ) 24 Na, 27 Al(n, y 2 ) 22 Na and 27 Al(n, y 3 ) 7 Be reactions with the effective threshold energies of 5, 27 and 119 MeV were measured at both 4- and 8-GeV deuteron beam energies. The average neutron fluxes between the effective threshold energies and the effective ends of the neutron spectra (which are 800 or 1000 MeV for energy of 4- or 8-GeV deuterons) were determined. The evidence for the intensity shift of the neutron spectra to higher neutron energies with the increase of the deuteron energy from 4 to 8 GeV was found from the ratios of the average neutron fluxes. The reaction rates and the average neutron fluxes were calculated with MCNPX2.7 and MARS15 codes.

The ratio Rdp of the quasi-elastic nd → p(nn) to the elastic np → pn charge-exchange process yields at 0 deg over 0.55-2.0 GeV neutron beam energy region: 2. Comparison of the results with the model dependent calculations

International Nuclear Information System (INIS)

Sharov, V.I.; Morozov, A.A.; Shindin, R.A.; Chernykh, E.V.; Nomofilov, A.A.; Strunov, L.N.

2008-01-01

In our previous paper, the new experimental results on ratio R dp of the quasi-elastic charge-exchange yield at 0 Lab d eg for the nd → p + (nn) reaction to the elastic np → pn charge-exchange yield, were presented. The measurements were carried out at the Nuclotron of the Veksler and Baldin Laboratory of High Energies of the Joint Institute for Nuclear Research at the neutron beam kinetic energies of 0.55, 0.8, 1.0,1.2, 1.4, 1.8 and 2.0 GeV. In this paper, the comparison of these R dp data with the R dp calculations obtained within the impulse approximation by using the invariant amplitude sets from the GW/VPI phase-shift analysis, is made. The calculated R dp values with the set of invariant amplitude data for the elastic np → pn charge exchange at θ p,CM = 0 deg are in a good agreement with the experimental data. It has been confirmed that at θ p,CM = 0 deg the nd → pnn process is caused by the elastic np → pn charge-exchange reaction. Thus, it has been shown that the obtained experimental R dp results can be used for the Delta-Sigma experimental programme to reduce the total ambiguity in the extraction of the amplitude parts

"Strong interaction" for particle physics laboratories

CERN Multimedia

2003-01-01

A new Web site pooling the communications resources of particle physics centres all over the world has just been launched. The official launching of the new particle physics website Interactions.org during the Lepton-Proton 2003 Conference at the American laboratory Fermilab was accompanied by music and a flurry of balloons. On the initiative of Fermilab, the site was created by a collaboration of communication teams from over fifteen of the world's particle physics laboratories, including KEK, SLAC, INFN, JINR and, of course, CERN, who pooled their efforts to develop the new tool. The spectacular launching of the new particle physics website Interactions.org at Fermilab on 12 August 2003. A real gateway to particle physics, the site not only contains all the latest news from the laboratories but also offers images, graphics and a video/animation link. In addition, it provides information about scientific policies, links to the universities, a very useful detailed glossary of particle physics and astrophysic...

Radioprotective action of glycerol and cysteamine on inactivation and mutagenesis in Salmonella tester strains after gamma and heavy ion irradiation

International Nuclear Information System (INIS)

Basha, S.G.; Krasavin, E.A.; Kozubek, S.

1991-01-01

Inactivation and mutagenesis were studied in Salmonella tester strains after γ-irradiation and after heavy ion irradiation in the presence of glycerol and cysteamine. Bacterial cells were irradiated at Dubna, JINR. Ions from deuterons to carbon were used with residual energies 2-9 MeV/u. The protective effect of glycerol was found both for γ-radiation and for heavy ions up to 50 keV/μm for both cell inactivation and mutagenesis in Salmonella tester strains with different mutation events. Cell sensitivity slightly increased with LET before falling down. The maximum was shifted in the presence of glycerol to the left and was less pronounced. The radioprotective effect of glycerol diminished gradually with LET from 2.0 for γ-radiation to 1.1 for carbon ions. Mutagenesis increases with LET in TA100 strain; in TA98 strain no marked increase could be detected. 13 refs.; 4 figs.; 5 tabs

Effect of nonaxial and hexadecapole deformation on the hyperfine splitting of energy levels in 238U muonic atoms

International Nuclear Information System (INIS)

Bagaev, V.I.; Mikhajlov, I.N.; Ortlepp, Kh.G.; Fromm, V.D.

1979-01-01

The effect of nonaxial and hexadecapole deformation on spectra of moun atoms is considered, the model of rigid nonaxial rotator being used. Experimental data on μ -238 U obtained on the JINR synchrocyclotron are presented. The effect of monopolar, quadrupolar and hexadecapolar parts of potential on muon spectrum is studied using a separated beam of negative 105 MeV/c muons, as the contribution of other harmonics is negligible. Wave functions of 238 U nucleus are determined in the framework of the Davydov-Filipov model. The values of charge distribution parameters obtained for 238 U are compared with available ones. The comparison shows that the effect of nuclear polarization on quadrupolar splitting of n→n-1 transitions decreases with the growth of n. Quadrupolar splitting of 4F→3D transitions is sufficiently large for experimental studies. Besides, vacuum polarization, radial charge distribution etc. produce an insignificant effect on the above transitions

Universal algorithm of time sharing

International Nuclear Information System (INIS)

Silin, I.N.; Fedyun'kin, E.D.

1979-01-01

Timesharing system algorithm is proposed for the wide class of one- and multiprocessor computer configurations. Dynamical priority is the piece constant function of the channel characteristic and system time quantum. The interactive job quantum has variable length. Characteristic recurrent formula is received. The concept of the background job is introduced. Background job loads processor if high priority jobs are inactive. Background quality function is given on the base of the statistical data received in the timesharing process. Algorithm includes optimal trashing off procedure for the jobs replacements in the memory. Sharing of the system time in proportion to the external priorities is guaranteed for the all active enough computing channels (back-ground too). The fast answer is guaranteed for the interactive jobs, which use small time and memory. The external priority control is saved for the high level scheduler. The experience of the algorithm realization on the BESM-6 computer in JINR is discussed

CMS Honours Three Russian and Bielorussian companies

CERN Multimedia

2003-01-01

On 7 March, CMS handed out the three latest Gold Awards under its scheme for honouring its best suppliers suppliers (c.f. Bulletin n°10/2003). Three Russian and Bielorussian firms were honoured, on the occasion of a visit by dignitaries from the two countries. CERN played host to Anatoly Sherbak, Head of the Fundamental Research Department of the Russian Federation Ministry of Industry and Science, Ambassador Sergei Aleinik, Permanent Representative of the Republic of Belarus to the Office of the United Nations at Geneva, Andrei Pirogov, Assistant Permanent Representative of the Russian Federation to the Office of the United Nations, and Alexei Sissakian, Vice Director of the JINR (Joint Institute for Nuclear Research) at Dubna in Russia. The directors of the three Russian and Bielorussian firms have received their awards and are seen with the visiting Russian and Bielorussian dignitaries and the CMS leaders in front of the CMS hadron calorimeter, on the spot where the detector is being assembled.These promi...

ISINN-3. Neutron spectroscopy, nuclear structure, related topics

International Nuclear Information System (INIS)

1995-01-01

The proceedings contain the materials presented at the Third International Seminar on Neutron-Nucleus Interactions (ISINN-3) dealing with the problems of neutron spectroscopy, nuclear structure and related topics. The Seminar took place in Dubna on April 26-28, 1995. Over 100 scientists from Belgium, Bulgaria, Czech Republic, Germany, Japan, Latvia, Mexico, Poland, Slovakia, Ukraine, USA and from more than 10 Russian research institutes took part in the Seminar. The Seminar is dedicated to the memory of the founder of the Neutron Physics Laboratory of JINR, the famous soviet scientist Professor Fedor L. Shapiro, whose 80th anniversary is being observed. The main problems discussed are the following: fundamental interactions and symmetries in neutron-induced reactions, fundamental properties of the neutron, properties of excited nuclei after neutron capture and some other ones. Special emphasis is laid upon γ decay and neutron induced nuclear fission as well as upon the methodical aspects of new experiments

Crystals channel high-energy beams in the LHC

CERN Multimedia

CERN Bulletin

2015-01-01

Bent crystals can be used to deflect particle beams, as suggested by E. Tsyganov in 1976. Experimental demonstrations have been carried out for four decades in various laboratories worldwide. In recent tests, a bent crystal inserted into the LHC beam halo successfully channelled and deflected 6.5 TeV protons into an absorber, with reduced secondary irradiation.    Quasimosaic crystal for the LHC (developed by PNPI). Bent crystal technology was introduced at CERN and further developed for the LHC by the UA9 Collaboration. For about ten years, experts from CERN, INFN (Italy), Imperial College (UK), LAL (France), and PNPI, IHEP and JINR (Russia) have been investigating the advantages of using bent crystals in the collimation systems of high-energy hadron colliders. A bent crystal replacing the primary collimator can deflect the incoming halo deeply inside the secondary collimators, improving their absorption efficiency. “The bent crystals we have just tested at the world-record en...

2 T superconducting detector solenoid for the PANDA target spectrometer

Energy Technology Data Exchange (ETDEWEB)

Efremov, A.A.; Koshurnikov, E.K. [Joint Institute for Nuclear Research, High Energy Physics Laboratory, Joliot-Curie, 6, 141980 Dubna, Moscow Region (Russian Federation); Lobanov, Y.Y. [Joint Institute for Nuclear Research, High Energy Physics Laboratory, Joliot-Curie, 6, 141980 Dubna, Moscow Region (Russian Federation)], E-mail: lobanov@jinr.ru; Makarov, A.F. [Joint Institute for Nuclear Research, High Energy Physics Laboratory, Joliot-Curie, 6, 141980 Dubna, Moscow Region (Russian Federation); Orth, H. [Gesellschaft fuer Schwerionenforschung, Planckstrasse 1, D-64291, Darmstadt (Germany); Sissakian, A.N.; Vodopianov, A.S. [Joint Institute for Nuclear Research, High Energy Physics Laboratory, Joliot-Curie, 6, 141980 Dubna, Moscow Region (Russian Federation)

2008-02-01

This paper describes the JINR design of the large 2 T superconducting solenoid for the target spectrometer of the PANDA experiment at HESR (FAIR, GSI, Darmstadt, Germany). The solenoid coil has an inner radius of 1.08 m and a length of 2.90 m. This solenoid is non-centrally split providing a warm bore of 100 mm in diameter through the coil to accommodate sufficient space for the internal target installations. Maximally stored energy in the windings is 22.3 MJ. All tracking and calorimetric detectors surrounding the target point, with exception of a forward cone of 5{sup 0} opening, are placed inside the lqHe-cryostat. The main features of the design and technique are as follows: a copper stabilizer and soldering technique for the superconducting cable; a stainless steel cryostat; winding technique over a mandrel; coreless type of the coil; low operational current. The details of the PANDA solenoid design including the magnetic field and stress-strain calculations are covered.

Study of collective flows of protons and π{sup -}-mesons in p+C, Ta and He+Li, C collisions at momenta of 4.2, 4.5 and 10 AGeV/c

Energy Technology Data Exchange (ETDEWEB)

Chkhaidze, L.; Djobava, T.; Kharkhelauri, L. [High Energy Physics Institute of Tbilisi State University, Tbilisi (Georgia); Chlachidze, G. [Fermi National Accelerator Laboratory, Batavia, IL (United States); Galoyan, A. [Joint Institute for Nuclear Research, Veksler and Baldin Laboratory of High Energy Physics, Dubna (Russian Federation); Togoo, R. [Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulan Bator (Mongolia); Uzhinsky, V. [Joint Institute for Nuclear Research, Laboratory of Information Technologies, Dubna (Russian Federation)

2016-11-15

Collective flows of protons and π{sup -}-mesons are studied at the momenta of 4.2, 4.5 and 10 AGeV/c for p+C, Ta and He+Li, C interactions. The data were obtained from the streamer chamber (SKM-200-GIBS) and from the Propane Bubble Chamber (PBC-500) systems utilized at JINR. A method of Danielewicz and Odyniec has been employed in determining a directed transverse flow of particles. The values of the transverse flow parameter and the strength of the anisotropic emission were defined for each interacting nuclear pair. It is found that the directed flows of protons and pions decrease with increasing the energy and the mass numbers of colliding nucleus pairs. The π{sup -}-meson and proton flows exhibit opposite directions in all studied interactions, and the flows of protons are directed in the reaction plane. The Ultra-relativistic Quantum Molecular Dynamical Model (UrQMD) coupled with the Statistical Multi-fragmentation Model (SMM), satisfactorily describes the obtained experimental results. (orig.)

Celebrating the Barrel Toroid commissioning

CERN Multimedia

Peter Jenni

ATLAS invited Funding Agency representatives and Laboratory Heads directly related to the funding and construction of the Barrel Toroid for a small ceremony on 13th December 2006 at Point 1, in order to mark the successful first full excitation of the BT (see last eNews). On that date, which was during the December CERN Council week, several of the Funding Agency Heads or their representatives could be present, representing CEA France, INFN Italy, BMBF Germany, Spain, Sweden, Switzerland, Russia, JINR Dubna and CERN. Speeches were delivered by the ATLAS spokesperson Peter Jenni thanking the Funding Partners in the name of the Collaboration, by Magnet Project Leader Herman ten Kate tracing the BT construction history, and by the CERN Director-General Robert Aymar congratulating all those who have contributed to the successful project. Herman ten Kate addressing the delegates. The text of the introductory address by Peter Jenni is reproduced here. "It is a great pleasure for me to welcome you all here...

Monitoring underground movements

CERN Multimedia

Antonella Del Rosso

2015-01-01

On 16 September 2015 at 22:54:33 (UTC), an 8.3-magnitude earthquake struck off the coast of Chile. 11,650 km away, at CERN, a new-generation instrument – the Precision Laser Inclinometer (PLI) – recorded the extreme event. The PLI is being tested by a JINR/CERN/ATLAS team to measure the movements of underground structures and detectors.   The Precision Laser Inclinometer during assembly. The instrument has proven very accurate when taking measurements of the movements of underground structures at CERN.    The Precision Laser Inclinometer is an extremely sensitive device capable of monitoring ground angular oscillations in a frequency range of 0.001-1 Hz with a precision of 10-10 rad/Hz1/2. The instrument is currently installed in one of the old ISR transfer tunnels (TT1) built in 1970. However, its final destination could be the ATLAS cavern, where it would measure and monitor the fine movements of the underground structures, which can affect the precise posi...

Two new wheels for ATLAS

CERN Multimedia

2002-01-01

Juergen Zimmer (Max Planck Institute), Roy Langstaff (TRIUMF/Victoria) and Sergej Kakurin (JINR), in front of one of the completed wheels of the ATLAS Hadronic End Cap Calorimeter. A decade of careful preparation and construction by groups in three continents is nearing completion with the assembly of two of the four 4 m diameter wheels required for the ATLAS Hadronic End Cap Calorimeter. The first two wheels have successfully passed all their mechanical and electrical tests, and have been rotated on schedule into the vertical position required in the experiment. 'This is an important milestone in the completion of the ATLAS End Cap Calorimetry' explains Chris Oram, who heads the Hadronic End Cap Calorimeter group. Like most experiments at particle colliders, ATLAS consists of several layers of detectors in the form of a 'barrel' and two 'end caps'. The Hadronic Calorimeter layer, which measures the energies of particles such as protons and pions, uses two techniques. The barrel part (Tile Calorimeter) cons...

Educational, research and implementation activities in the Department of Atomic Physics at Plovdiv University

International Nuclear Information System (INIS)

Balabanov, N.; Antonov, A.; Hristov, H.

2004-01-01

The Department of Atomic Physics at Plovdiv University has 40 year long experience in educating students in Atomic and Subatomic Physics. We aim at making the knowledge gained in nuclear physics part of the culture of our students. At the core of our educational activities lies our long and successful experience in studying the characteristics of atomic nuclei. In cooperation with JINR-Dubna we have studied the nuclei of approximately 40 percent of the periodic table elements. These studies also serve as a basis for the diverse implementation activities of the Department, which have an impressive geographical spread. In recent years our research has been focusing more specifically on radio-ecological issues with the valuable support of the Nuclear Regulatory Agency (NRA). Future more intense support on behalf of NRA's together with more dynamic links with other specialized units, such as the Kozloduy NPP in the first place, would considerably contribute to optimizing the effect of our overall activity. (authors)

VM-based infrastructure for simulating different cluster and storage solutions in ATLAS

CERN Document Server

KUTOUSKI, M; The ATLAS collaboration; PETROSYAN, A; KADOCHNIKOV, I; BELOV, S; KORENKOV, V

2012-01-01

The current ATLAS Tier3 infrastructure consists of a variety of sites of different sizes and with a mix of local resource management systems (LRMS) and mass storage system (MSS) implementations. The Tier3 monitoring suite, having been developed in order to satisfy the needs of Tier3 site administrators and to aggregate Tier3 monitoring information on the global VO level, needs to be validated for various combinations of LRMS and MSS solutions along with the corresponding Ganglia and/or Nagios plugins. For this purpose the Testbed infrastructure, which allows simulation of various computational cluster and storage solutions, had been set up at JINR (Dubna). This infrastructure provides the ability to run testbeds with various LRMS and MSS implementations, and with the capability to quickly redeploy particular testbeds or their components. Performance of specific components is not a critical issue for development and validation, whereas easy management and deployment are crucial. Therefore virtual machines were...

The polarized neutron spectrometer REMUR at the pulsed reactor IBR-2

International Nuclear Information System (INIS)

Aksenov, V.L.; Zhernenkov, K.N.; Kozhevnikov, S.V.; Nikitenko, Yu.V.; Petrenko, A.V.; Lauter, H.J.; Lauter-Pasyuk, V.

2004-01-01

At the Laboratory of Neutron Physics (JINR, Dubna) the new polarized neutron spectrometer REMUR has been constructed and commissioned. The spectrometer REMUR is dedicated to investigations of multilayers and surfaces by polarized neutron reflection and of the inhomogeneous state of solids by diffuse small-angle polarized neutron scattering. The spectrometer operates in the neutron wavelength interval 1-10 Angstroem. In the reflectometry mode it allows one to complete polarization analysis and neutron position-sensitive detection within the solid angle of scattering 2.2·10 -4 rad. The spectrometer ensures good statistics of the reflectometric data in the scattering wave vector interval 3·10 -3 - 5·10 -1 Angstroem -1 . In the small-angle scattering mode the spectrometer allows the investigation of neutron scattering processes without spin-flip over the detector's neutron registration solid angle interval from 4·10 -3 to 10 -1 rad and the scattering wave vector interval from 0.006-0.15 to 0.03-0.7 Angstroem -1 , respectively

Improving Selectivity of 1D Bragg Resonator Using Coupling of Propagating and Trapped Waves

CERN Document Server

Ginzburg, N S; Peskov, Nikolay Yu; Sergeev, A S

2004-01-01

A novel 1D Bragg resonator based on coupling propagated and locked (quasi cut-off) modes should be tested in a JINR- IAP FEM-oscillator to improve selectivity over the transverse mode index. In this scheme the electron beam interacts with only propagating wave, and the latter is coupled with a quasi cut-off mode. This coupling can be realized by either helical or azimuthally-symmetric corrugation. The quasi cut-off mode provides the feedback in the system leading to the absolute instability and the self-excitation of the whole system while efficiency in the steady-state regime of generation is almost completely determined by the propagating mode, synchronous to the beam. Analytical consideration and numerical simulation show that the efficiency of such an FEM can be rather high. The main advantage of this scheme is provision of higher selectivity over the transverse mode index than traditional scheme of Bragg FEL that encourage increasing operating frequency for fixed transverse size of the interaction space.

The use of muonic atoms in biomedical researches (review)

International Nuclear Information System (INIS)

Sabirov, E.M.

1984-01-01

The review based on the experimental works of USA, West Germany scientists, the scientists of LNP JINR, shows the possibilities of muon atom application for comparative element analysis in biology and medicine. The unique and wide possibilities of muon diagnosis method are shown. Experiments both in vitro and in vivo were conducted. Investigation resulted in demonstration of variation of C, N, O amount in investigated tissue samples; the relative oxygen content grows in progression: adipose tissue, muscular tissue, liuer, blood. It is shown that the method enables to determine the content of any element no matter in what chemical compound this element enters. The method of muon atoms has some advantages as compared with other nuclear physics methods. Method restriction lies in the absence of high-intensive meson beams, which is related to method sensitivity. Another disadvantage consists in impossibility to register hydrogen therefore the method must be expanded by other methods of analysis for the purpose of investigation of different functional changes in organism

The Optical Instrumentation of the ATLAS Tile Calorimeter

CERN Document Server

Abdallah, J; Alexa, C; Alves, R; Amaral, P; Ananiev, A; Anderson, K; Andresen, X; Antonaki, A; Batusov, V; Bednar, P; Bergeaas, E; Biscarat, C; Blanch, O; Blanchot, G; Bohm, C; Boldea, V; Bosi, F; Bosman, M; Bromberg, C; Budagov, Yu A; Calvet, D; Cardeira, C; Carli, T; Carvalho, J; Cascella, M; Castillo, M V; Costelo, J; Cavalli-Sforza, M; Cavasinni, V; Cerqueira, A S; Clément, C; Cobal, M; Cogswell, F; Constantinescu, S; Costanzo, D; Da Silva, P; David, M; Davidek, T; Dawson, J; De, K; Del Prete, T; Diakov, E; Di Girolamo, B; Dita, S; Dolejsi, J; Dolezal, Z; Dotti, A; Downing, R; Drake, G; Efthymiopoulos, I; Errede, D; Errede, S; Farbin, A; Fassouliotis, D; Feng, E; Fenyuk, A; Ferdi, C; Ferreira, B C; Ferrer, A; Flaminio, V; Flix, J; Francavilla, P; Fullana, E; Garde, V; Gellerstedt, K; Giakoumopoulou, V; Giangiobbe, V; Gildemeister, O; Gilewsky, V; Giokaris, N; Gollub, N; Gomes, A; González, V; Gouveia, J; Grenier, P; Gris, P; Guarino, V; Guicheney, C; Sen-Gupta, A; Hakobyan, H; Haney, M; Hellman, S; Henriques, A; Higón, E; Hill, N; Holmgren, S; Hruska, I; Hurwitz, M; Huston, J; Jen-La Plante, I; Jon-And, K; Junk, T; Karyukhin, A; Khubua, J; Klereborn, J; Konsnantinov, V; Kopikov, S; Korolkov, I; Krivkova, P; Kulchitsky, Y; Kurochkin, Yu; Kuzhir, P; Lapin, V; Le Compte, T; Lefèvre, R; Leitner, R; Li, J; Liablin, M; Lokajícek, M; Lomakin, Y; Lourtie, P; Lovas, L; Lupi, A; Maidantchik, C; Maio, A; Maliukov, S; Manousakis, A; Marques, C; Marroquim, F; Martin, F; Mazzoni, E; Merritt, F S; Myagkov, A; Miller, R; Minashvili, I; Miralles, L; Montarou, G; Némécek, S; Nessi, M; Nikitine, I; Nodulman, L; Norniella, O; Onofre, A; Oreglia, M; Palan, B; Pallin, D; Pantea, D; Pereira, A; Pilcher, J E; Pina, J; Pinhão, J; Pod, E; Podlyski, F; Portell, X; Poveda, J; Pribyl, L; Price, L E; Proudfoot, J; Ramalho, M; Ramstedt, M; Raposeiro, L; Reis, J; Richards, R; Roda, C; Romanov, V; Rosnet, R; Roy, P; Ruiz, A; Rumiantsau, V; Russakovich, N; Sada Costa, J; Salto, O; Salvachúa, B; Sanchis, E; Sanders, H; Santoni, C; Santos, J; Saraiva, J G; Sarri, F; Says, L P; Schlager, G; Schlereth, J L; Seixas, J M; Selldén, B; Shalanda, N; Shevtsov, P; Shochet, M; Silva, J; Simaitis, V; Simonyan, M; Sisakian, A; Sjölin, J; Solans, C; Solodkov, A; Solovyanov, O; Sosebee, M; Spanó, F; Speckmeyer, P; Stanek, R; Starchenko, E; Starovoitov, P; Suk, M; Sykora, I; Tang, F; Tas, P; Teuscher, R; Tischenko, M; Tokar, S; Topilin, N; Torres, J; Underwood, D; Usai, G; Valero, A; Valkár, S; Valls, J A; Vartapetian, A; Vazielle, F; Vellidis, C; Ventura, F; Vichou, I; Vivarelli, I; Volpi, M; White, A; Zaitsev, A; Zaytsev, Yu; Zenin, A; Zenis, T; Zenonos, Z; Zenz, S; Zilka, B

2013-01-01

The purpose of this Note is to describe the optical assembly procedure called here Optical Instrumentation and the quality tests conducted on the assembled units. Altogether, 65 Barrel (or LB) modules were constructed - including one spare - together with 129 Extended Barrel (EB) modules (including one spare). The LB modules were mechanically assembled at JINR (Dubna, Russia) and transported to CERN, where the optical instrumentation was performed with personnel contributed by several Institutes. The modules composing one of the two Extended Barrels (known as EBA) were mechanically assembled in the USA, and instrumented in two US locations (ANL, U. of Michigan), while the modules of the other Extended barrel (EBC) were assembled in Spain and instrumented at IFAE (Barcelona). Each of the EB modules includes a subassembly known as ITC that contributes to the hermeticity of the calorimeter; all ITCs were assembled at UTA (Texas), and mounted onto the module mechanical structures at the EB mechanical assembly loc...

High perveance electron gun for the electron cooling system

International Nuclear Information System (INIS)

Korotaev, Yu.; Meshkov, I.; Petrov, A.; Sidorin, A.; Smirnov, A.; Syresin, E.; Titkova, I.

2000-01-01

The cooling time in the electron cooling system is inversely proportional to the beam current. To obtain high current of the electron beam the control electrode of the gun is provided with a positive potential and an electrostatic trap for secondary electrons appears inside the electron gun. This leads to a decrease in the gun perveance. To avoid this problem, the adiabatic high perveance electron gun with the clearing control electrode is designed in JINR (J. Bosser, Y. Korotaev, I. Meshkov, E. Syresin et al., Nucl. Instr. and Meth. A 391 (1996) 103. Yu. Korotaev, I. Meshkov, A. Sidorin, A. Smirnov, E. Syresin, The generation of electron beams with perveance of 3-6 μA/V 3/2 , Proceedings of SCHEF'99). The clearing control electrode has a transverse electric field, which clears secondary electrons. Computer simulations of the potential map were made with RELAX3D computer code (C.J. Kost, F.W. Jones, RELAX3D User's Guide and References Manual)