WorldWideScience

Sample records for cern linac

  1. Operational experience with the CERN hadron linacs

    International Nuclear Information System (INIS)

    The present CERN proton linac (Linac2) was commissioned in 1978 and since that date has been the primary source of protons to the CERN accelerator complex. During the past 18 years, the machine has had a very good reliability record in spite of the demands made upon it. Modifications have been made with the view of maintaining this reliability with reduced resources and new requirements from the users. Further demands will be made in the future for LHC operation. In 1994, a new linac for heavy ion production was put into service replacing the original CERN proton linac. As this machine was built within an international collaboration, operation had to take into account the novelty of the techniques used and the variety of equipment supplied by outside collaborators. Even so, the new machine has also had very good reliability. (author)

  2. CERN Linac4. The space charge challenge

    Energy Technology Data Exchange (ETDEWEB)

    Hein, Lutz Matthias

    2013-08-06

    In the first phase of the upgrade program of the CERN accelerator complex the proton injector Linac2 will be replaced by a new, normal-conducting H-ion Linac, Linac4, allowing a significant increase of the proton flux intensity along the downstream accelerator complex. In the design of Linac4 three beam transport sections are implemented to match the beam between the different accelerator elements and to model the longitudinal pulse structure. These three beam transport sections, which are the most critical locations in terms of beam quality preservation, are in the focus of this thesis. During the work of this thesis the Low Energy Beam Transport (LEBT), which is required to match the source beam to the radiofrequency quadrupole (RFQ), has been commissioned and its beam dynamics re-constructed. The measurement campaign used to reconstruct the LEBT beam dynamics was performed with the aim to prepare the RFQ commissioning and to maximise the LEBT performance. Downstream of the Linac4 accelerator the beam is transported along a 180 m long transfer line to the Proton Synchrotron Booster (PS-Booster). The transfer line optics was studied, optimised and sections were completely re-designed. The new transfer line optics is characterised by an improved preservation of the beam emittance, higher stability of the optical solution with respect to alignment errors and field jitters of the transfer line magnets and it is matched to each of the PS-Booster injection schemes. In a concluding ''Start-To-End'' simulation based on the measured beam characteristics at the LEBT exit the beam dynamics of the downstream Linac, including the transfer line, was calculated. To minimise particle losses within acceptable emittance preservation the beam optics of the Medium Energy Beam Transport (MEBT) was adapted to the measured beam parameters. This ''Start-To-End'' simulation was performed to identify critical sections of the Linac4 beam dynamics and

  3. CERN Linac4. The space charge challenge

    International Nuclear Information System (INIS)

    In the first phase of the upgrade program of the CERN accelerator complex the proton injector Linac2 will be replaced by a new, normal-conducting H-ion Linac, Linac4, allowing a significant increase of the proton flux intensity along the downstream accelerator complex. In the design of Linac4 three beam transport sections are implemented to match the beam between the different accelerator elements and to model the longitudinal pulse structure. These three beam transport sections, which are the most critical locations in terms of beam quality preservation, are in the focus of this thesis. During the work of this thesis the Low Energy Beam Transport (LEBT), which is required to match the source beam to the radiofrequency quadrupole (RFQ), has been commissioned and its beam dynamics re-constructed. The measurement campaign used to reconstruct the LEBT beam dynamics was performed with the aim to prepare the RFQ commissioning and to maximise the LEBT performance. Downstream of the Linac4 accelerator the beam is transported along a 180 m long transfer line to the Proton Synchrotron Booster (PS-Booster). The transfer line optics was studied, optimised and sections were completely re-designed. The new transfer line optics is characterised by an improved preservation of the beam emittance, higher stability of the optical solution with respect to alignment errors and field jitters of the transfer line magnets and it is matched to each of the PS-Booster injection schemes. In a concluding ''Start-To-End'' simulation based on the measured beam characteristics at the LEBT exit the beam dynamics of the downstream Linac, including the transfer line, was calculated. To minimise particle losses within acceptable emittance preservation the beam optics of the Medium Energy Beam Transport (MEBT) was adapted to the measured beam parameters. This ''Start-To-End'' simulation was performed to identify critical sections of the Linac4 beam dynamics and to adjust the commissioning strategies.

  4. All Digital IQ Servo-System for CERN Linacs

    CERN Document Server

    Broere, J; Garoby, R; Rohlev, A; Serrano, J

    2004-01-01

    A VME based control system has been developed and built at CERN for the servo loops regulating the field in linac accelerating structures. It is an all-digital system built on a single VME card, providing digital detection, processing, and modulation. It is foreseen to be used, in different versions, for the needs of both present and future CERN hadron linacs. The first application will be in the energy ramping RF chain of the CERN Heavy Ion Linac (linac 3). Design principle and the experimental results are described.

  5. All Digital IQ Servo-System for CERN Linacs

    CERN Document Server

    Rohlev, A; Garoby, R

    2003-01-01

    A new VME based system has been developed and built at CERN for the servo loops regulating the field in the linac accelerating structure. It makes use of high speed digital In-phase/Quadrature (IQ) detection, digital processing, and digital IQ modulation. The digital processing and IQ modulation is done in a single PLD. The system incorporates continually variable set points, iterative learning, feed forward as well as extensive diagnostics and other features well suited for digital implementations. Built on a single VME card, it will be first used in the energy ramping RF chain of the CERN Heavy Ion Linac (linac 3) and later for upgrading the present proton linac (linac 2). This system serves also as a prototype for the future Superconducting Proton Linac (SPL). The design principle and the experimental results are described.

  6. Progress in the Construction of Linac4 at CERN

    CERN Document Server

    Vretenar, M; Baudrenghien, P; Bertone, C; Body, Y; Broere, J; Brunner, O; Bellodi, G; Buzio, M; Carli, C; Roncarolo, F; Ramberger, S; Raich, U; Puccio, B; Paoluzzi, M; Nisbet, D; Mikulec, B; Mathot, S; Maglioni, C; Lopez-Hernandez, LA; Lombardi, A; Lallement, J B; Lettry, J; Kozsar, I; Hansen, J; Hanke, K; Hammouti, L; Gerigk, F; Garoby, R; Funken, A; Fuchs, J F; Dos Santos, N; Dallocchio, A; Coupard, J; Corso, JP; Scrivens, R; Schwerg, N; Vollaire, J; Zickler, T; Weisz, S; Wegner, R; Vandoni, G; Rossi, C

    2013-01-01

    As first step of the LHC luminosity upgrade program CERN is building a new 160 MeV H¯ linear accelerator, Linac4, to replace the ageing 50 MeV Linac2 as injector to the PS Booster (PSB). Linac4 is an 86-m long normalconducting linac made of a 3 MeV injector followed by 22 accelerating cavities of three different types. The general service infrastructure has been installed in the new tunnel and surface building and its commissioning is progressing; high power RF equipment is being installed in the hall and installations in the tunnel will start soon. Construction of the accelerator parts is in full swing involving industry, the CERN workshops and a network of international collaborations. The injector section including a newly designed and built H¯ source, a 3-m long RFQ and a chopping line is being commissioned in a dedicated test stand. Beam commissioning of the linac will take place in steps of increasing energy between 2013 and 2015. From end of 2014 Linac4 could deliver 50 MeV protons i...

  7. CAS CERN Accelerator School: Cyclotrons, linacs and their applications. Proceedings

    International Nuclear Information System (INIS)

    These proceedings present the lectures given at the eighth specialized course organized by the CERN Accelerator School (CAS), the topic this time being 'Cyclotrons, Linacs and Their Applications'. Following an introductory lecture on linacs, the fundamental features of electron, ion and induction linacs are described together with their RF systems and particle sources. Cyclotrons are then introduced followed by details of their different types, their magnet and RF design, and their injection and extraction systems, with a glance towards exotic and possible future machines. Chapters are then presented on the use of linacs and cyclotrons for medical, fission, fusion and material applications, as well as for isotope production. Finally, descriptions of the design of a radioisotope facility, the matching of accelerators to their task and the computational tools used in their design are included. (orig.)

  8. CERN Linac4 - The Space Charge Challenge Design and Commission

    CERN Document Server

    Hein, Lutz Matthias; Holzer, Bernhard

    In the first phase of the upgrade program of the CERN accelerator complex the proton injector Linac2 will be replaced by a new, normal-conducting $H^-$ ion Linac, Linac4, allowing a significant increase of the proton flux intensity along the downstream accelerator complex. In the design of Linac4 three beam transport sections are implemented to match the beam between the different accelerator elements and to model the longitudinal pulse structure. These three beam transport sections, which are the most critical locations in terms of beam quality preservation, are in the focus of this thesis. During the work of this thesis the low energy beam transport (LEBT), which is required to match the source beam to the radiofrequency quadrupole (RFQ), has been commissioned and its beam dynamics re-constructed. The measurement campaign used to re-construct the LEBT beam dynamics was performed with the aim to prepare the RFQ commissioning and to maximise the LEBT performance. Downstream of the Linac4 accelerator the beam...

  9. High duty factor plasma generator for CERN's Superconducting Proton Linac

    International Nuclear Information System (INIS)

    CERN's Linac4 is a 160 MeV linear accelerator currently under construction. It will inject negatively charged hydrogen ions into CERN's PS-Booster. Its ion source is a noncesiated rf driven H- volume source directly inspired from the one of DESY and is aimed to deliver pulses of 80 mA of H- during 0.4 ms at a 2 Hz repetition rate. The Superconducting Proton Linac (SPL) project is part of the luminosity upgrade of the Large Hadron Collider. It consists of an extension of Linac4 up to 5 GeV and is foreseen to deliver protons to a future 50 GeV synchrotron (PS2). For the SPL high power option (HP-SPL), the ion source would deliver pulses of 80 mA of H- during 1.2 ms and operate at a 50 Hz repetition rate. This significant upgrade motivates the design of the new water cooled plasma generator presented in this paper. Its engineering is based on the results of a finite element thermal study of the Linac4 H- plasma generator that identified critical components and thermal barriers. A cooling system is proposed which achieves the required heat dissipation and maintains the original functionality. Materials with higher thermal conductivity are selected and, wherever possible, thermal barriers resulting from low pressure contacts are removed by brazing metals on insulators. The AlN plasma chamber cooling circuit is inspired from the approach chosen for the cesiated high duty factor rf H- source operating at SNS.

  10. A High-power Superconducting H$^-$ Linac (SPL) at CERN

    CERN Document Server

    Chiaveri, Enrico

    2001-01-01

    The conceptual design of a superconducting H^- linear accelerator at CERN for a beam energy of 2.2 GeV and a power of 4 MW is presented. Using most of the superconducting RF cavities available after the decommissioning of LEP, it operates at 352 MHz and delivers 10^16 protons per second. At an early stage it will upgrade the performance of the PS complex by replacing Linac2 and the PS booster, by injecting protons directly into the PS. The brilliance of the LHC beam will thus be tripled. The present ISOLDE facility can be supplied with five times more beam current than to-day. In conjunction with an accumulator and a compressor, the purpose of its design is to be the proton driver of a neutrino factory at CERN.

  11. Tests of the CERN Proton Linac Performance for LHC-Type Beams

    CERN Document Server

    Hill, C E; Scrivens, R; Vretenar, Maurizio; Feschenko, A V; Liou, A

    2000-01-01

    As the pre-injector of the LHC injector chain, the proton linac at CERN is required to provide a high-intensity (180mA) beam to the Proton Synchrotron Booster. The results of measurements at this intensity will be presented. Furthermore, the linac is now equipped with bunch shape monitors from INR, Moscow, which have allowed the comparison of the Alvarez tank RF settings with simulations.

  12. Tests of the CERN proton linac performance for LHC-type beams

    CERN Document Server

    Feschenko, A V; Lombardi, A M; Liou, A; Scrivens, R; Vretenar, Maurizio

    2000-01-01

    As the pre-injector of the LHC injector chain, the proton linac at CERN is required to provide a high-intensity (180mA) beam to the Proton Synchrotron Booster. The results of measurements at this intensity will be presented. Furthermore, the linac is now equipped with bunch shape monitors from INR, Moscow, which have allowed the comparison of the Alvarez tank RF settings with simulations.

  13. Study of beam parameters of the CERN proton linac using a three dimensional bunch shape monitor

    International Nuclear Information System (INIS)

    A Three Dimensional Bunch Shape Monitor (3D-BSM) has been developed for the CERN Proton Linac 2. A new area for beam studies at high intensities has been opened by this detector. Bunch density distributions in all three dimensions and their variations along the beam pulse can be obtained. Changing field gradients in linac quadrupoles, emittance variation along the bunch has been calculated. Measurements of beam halos become possible thanks to the large dynamic range of the device. Beam parameters at various linac settings have been measured and analysed. (author)

  14. Study of beam parameters of the CERN proton linac using a three dimensional bunch shape monitor

    CERN Document Server

    Feschenko, A V; Ostroumov, P N; Dubois, O; Haseroth, H; Hill, C; Kugler, H; Lombardi, A M; Naito, F; Tanke, E; Vretenar, Maurizio

    1996-01-01

    A Three Dimensional Bunch Shape Monitor (3D-BSM) has been developed for the CERN Proton Linac 2. A new area for beam studies at high intensities has been opened by this detector. Bunch density distributions in all three dimensions and their variations along the beam pulse can be obtained. Changing field gradients in linac quadrupoles, emittance variation along the bunch has been calculated. Measurements of beam halos become possible thanks to the large dynamic range of the device. Beam parameters at various linac settings have been measured and analysed.

  15. Design of Normal-conducting Quadrupole Magnets for Linac4 at CERN

    CERN Document Server

    Vanherpe, L; Vorozhtsov, A; Zickler, T

    2014-01-01

    Linac4 is the first element of the LHC Injectors Upgrade Project and will replace the existing Linac2 as linear injector of protons for the CERN accelerators. A new transfer line will link Linac4 to the Proton Synchrotron Booster (PSB). Approximately hundred normal-conducting electro-magnets are required for beam steering and focusing along the linac and the transfer line. This text concentrates on the design of the Linac4 quadrupole magnets. The design and the first magnetic measurements of the inter-tank quadrupole electro-magnets are discussed. In addition, the design and optimization of the transfer line quadrupole magnets are highlighted. The compatibility of the magnetic requirements and the power converter constraints for the latter magnet type is assessed.

  16. Using basic electromagnetism to introduce LINAC4 (CERN)

    Science.gov (United States)

    Cid-Vidal, Xabier; Cid, Ramon; Vretenar, Maurizio

    2016-07-01

    The LHC is the last element of CERN’s accelerator complex, which is a succession of machines with increasingly higher energies. Everything starts in the 50 MeV linear accelerator (LINAC2), but a new linear accelerator, the 160 MeV LINAC4, will replace LINAC2 in 2018, upgrading LHC injectors to higher intensity and eventually increasing the luminosity of LHC. The aim of this article is briefly introducing this new accelerator, and presenting a simple application of some fundamental laws of magnetism to be taken to the secondary school classrooms.

  17. Commissioning of the CERN LINAC4 BPM System with 50 Mev Proton Beamns

    CERN Document Server

    Tan, J; Søby, L; Sordet, M; Wendt, M

    2013-01-01

    The new Linac4 at CERN will provide a 160 MeV H- ion beam for charge-exchange injection into the existing CERN accelerator complex. Shorted stripline pick-ups placed in the Linac intertank regions and the transfer lines will measure beam orbit, relative beam current, beam phase, and average beam energy via the time-of-flight between two pickups. A prototype Beam Position Monitor (BPM) system has been installed in the transfer line between the existing Linac2 and the Proton Synchrotron Booster (PSB) in order to study and review the complete acquisition chain. This paper presents measurements and performance of this BPM system operating with 50 MeV proton beams, and compares the results with laboratory measurements and electromagnetic simulations.

  18. Assembly and RF Tuning of the Linac4 RFQ at CERN

    CERN Document Server

    Rossi, C; Hansen, J; Lallement, JB; Lombardi, AM; Pugnat, D; Vandoni, G; Timmins, M; Vretenar, M; Mathot, S; Piquet, O; Novo, J; Le Noa, Y; France, A; Desmons, M

    2013-01-01

    The fabrication of Linac4 is progressing at CERN with the goal of making a 160 MeV H- beam available to the LHC injection chain as from 2015. In the Linac4 the first stage of beam acceleration, after its extraction from the ion source, is provided by a Radiofrequency Quadrupole accelerator (RFQ), operating at the RF frequency of 352.2 MHz and which accelerates the ion beam to the energy of 3 MeV. The RFQ, made of three modules, one meter each, is of the four-vane kind, has been designed in the frame of a collaboration between CERN and CEA and has been completely machined and assembled at CERN. The paper describes the assembly of the RFQ structure and reports the results of RF low power measurements, in order to achieve the required accelerating field flatness within 1% of the nominal field profile.

  19. Beam diagnostics measurements at 3 MeV of the LINAC4 H- beam at CERN

    CERN Document Server

    Zocca, F; Duraffourg, M; Focker, G J; Gerard, D; Kolad, B; Lenardon, F; Ludwig, M; Raich, U; Roncarolo, F; Sordet, M; Tan, J; Tassan-Viol, J; Vuitton, C; Feshenko, A

    2014-01-01

    As part of the CERN LHC injector chain upgrade, LINAC4 [1, 2] will accelerate H- ions to 160 MeV, replacing the old 50 MeV proton linac. The ion source, the Low Energy Beam Transfer (LEBT) line, the 3 MeV Radio Frequency Quadrupole and the Medium Energy Beam Transfer (MEBT) line hosting a chopper, have been commissioned in the LINAC4 tunnel. Diagnostic devices are installed in the LEBT and MEBT line and in a movable diagnostics test bench which is temporarily added to the MEBT exit. The paper gives an overview of all the instruments used, including beam current transformers, beam position monitors, wire scanners and wire grids for transverse profile measurements, a longitudinal bunch shape monitor and a slit-and-grid emittance meter. The instrumentation performance is discussed and the measurement results that allowed characterizing the 3 MeV beam in the LINAC4 tunnel are summarized.

  20. Progress in the Design of the SPL, an $H ^{-}$ High-Intensity Linac at CERN

    CERN Document Server

    Bongardt, K; Frischholz, Hans; Gerigk, F; Lombardi, A M; Losito, R; Mostacci, A; Paoluzzi, M; Tückmantel, Joachim; Vretenar, Maurizio

    2002-01-01

    The SPL (Superconducting Proton Linac) is a 4 MW 2.2 GeV H- linac, intended to re-use most of the 352 MHz RF equipment from the decommissioned LEP machine. Injecting into the CERN PS, this linac would improve the intensity and quality of the CERN proton beams, while as a stand-alone facility could provide intense beams of radioactive ions or neutrinos (Neutrino Superbeam). Together with accumulator and compressor rings, it would be a suitable driver for a Neutrino Factory. Since the original proposal, many improvements to the design have been introduced, in order to simplify the layout and reduce costs. They include the reduction of the repetition frequency to 50 Hz, the design of a shorter superconducting (SC) linac section that goes up to the full energy with b=0.8 cavities, an improved DTL section including a new CCDTL design, a chopping line based on fast (2 ns rise time) low-voltage choppers and pulser, and a simplified front-end. Moreover, the problem of pulse mode operation of a superconducting linac w...

  1. submitter Radiation Protection Studies for CERN LINAC4/SPL Accelerator Complex

    CERN Document Server

    Mauro, Egidio; Silari, Marco

    2009-01-01

    CERN is presently designing a new chain of accelerators to replace the present Proton Synchrotron (PS) complex: a 160 MeV room-temperature H$^-$ linac (Linac4) to replace the present 50 MeV proton linac injector, a 3.5 GeV Superconducting Proton Linac (SPL) to replace the 1.4 GeV PS booster (PSB) and a 50 GeV synchrotron (named PS2) to replace the 26 GeV PS. Linac4 has been funded and the civil engineering work started in October 2008, whilst the SPL is in an advanced stage of design. Beyond injecting into the future 50 GeV PS, the ultimate goal of the SPL is to generate a 4 MW beam for the production of intense neutrino beams. The radiation protection design is driven by the latter requirement. This thesis summarizes the radiation protection studies conducted for Linac4. FLUKA Monte Carlo simulations, complemented by analytical estimates, were performed 1) to evaluate the propagation of neutrons through the waveguide, ventilation and cable ducts placed along the accelerator, 2) to estimate the radiological i...

  2. The control system of the CERN new linac

    International Nuclear Information System (INIS)

    Two computers are used for the Linac control system, interfaced to the process over CAMAC, configured in such a way that each computer has direct access to the CAMAC system. The control system is designed in such a way as to minimize the knowledge of programming and computers required by the normal users of the system. The consoles use touch panels for parameter, program and option selections and are interfaced over parallel CAMAC to the computers, whereas the process itself is interfaced over bit serial CAMAC. In the case of the ion source, the CAMAC Serial Highway crosses the 750 kV with the help of optical data links

  3. Spatial and temporal beam profile monitor with nanosecond resolution for CERN's Linac4 and Superconducting Proton Linac

    CERN Document Server

    Hori, M

    2008-01-01

    The Linac4, now being developed at CERN, will provide 160-MeV H- beams of high intensity . Before this beam can be injected into the CERN Proton Synchrotron Booster or future Superconducting Proton Linac for further acceleration, some sequences of 500-ps-long micro-bunches must be removed from it, using a beam chopper. These bunches, if left in the beam, would fall outside the longitudinal acceptance of the accelerators and make them radioactive. We developed a monitor to measure the time structure and spatial profile of this chopped beam, with respective resolutions and . Its large active area and dynamic range also allows investigations of beam halos. The ion beam first struck a carbon foil, and secondary electrons emerging from the foil were accelerated by a series of parallel grid electrodes. These electrons struck a phosphor screen, and the resulting image of the scintillation light was guided to a thermoelectrically cooled, charge-coupled device camera. The time resolution was attained by applying high-...

  4. A heavy ion replacement for the first tank of the Old CERN Linac

    International Nuclear Information System (INIS)

    The ''Old CERN Linac'' has been used to accelerate protons, deuterons and alpha particles. An RFQ is presently being constructed as a 16O injector. For extension to higher mass ions the first tank must be replaced by a new 2 βlambda Alvarez tank. Three scenarios are considered for the acceleration of 28Si up to 2.5 MeV/u. (orig.)

  5. Compact heavy ion RFQ preaccelerator for use at the CERN Linac I

    International Nuclear Information System (INIS)

    This paper describes the LBL contribution to a project designed to provide fully-stripped oxygen beams for acceleration in the CERN PS complex. A preaccelerator for Linac I, consisting of an ECR ion source, an RFQ linac, and rf matching cavities, is being assembled as part of a collaborative arrangement among LBL, GSI, and CERN. The RFQ, designed and built at LBL, will accept analyzed oxygen +6 beam from the ECR at 5.6 keV/amu, and accelerate it to 139.5 keV/amu, the injection energy required for 2 βlambda operation of Linac I. Stripping to +8 will be done with a foil stripper at 12.5 MeV/amu at the exit of Linac I. The RFQ operates at 202.56 MHz and is 0.86 meters in length. The structure is stabilized with vane coupling rings, and uses a single drive loop and a single tuning loop. 5 refs., 3 figs

  6. Progress in the design of the SPL, an $H^{-}$ high-intensity linac at CERN

    CERN Document Server

    Bongardt, K; Frischholz, Hans; Garoby, R; Gerigk, F; Lombardi, A M; Losito, R; Mostacci, A; Paoluzzi, M; Tückmantel, Joachim; Vretenar, Maurizio

    2002-01-01

    The SPL (Superconducting Proton Linac) is a 4 MW 2.2 GeV H/sup -/ linac, intended to reuse most of the 352 MHz RF equipment from the decommissioned LEP machine. Injecting into the CERN PS, this linac would improve the intensity and quality of the CERN proton beams, while as a stand-alone facility could provide intense beams of radioactive ions or neutrinos (Neutrino Superbeam). Together with accumulator and compressor rings, it would be a suitable driver for a Neutrino Factory. Since the original proposal, many improvements to the design have been introduced, in order to simplify the layout and reduce costs. They include the reduction of the repetition frequency to 50 Hz, the design of a shorter superconducting (SC) linac section that goes up to the full energy with beta =0.8 cavities, an improved DTL section including a new CCDTL design, a chopping line based on fast (2 ns rise time) low-voltage choppers and pulser, and a simplified front-end. Moreover, the problem of pulse mode operation of a superconductin...

  7. Progress in the fabrication of the RFQ accelerator for the CERN Linac4

    CERN Document Server

    Rossi, C; Lallement, J B; Lombardi, A M; Mathot, S; Pugnat, D; Timmins, M; Vandoni, G; Vretenar, M; Desmons, M; France, A; Le Noa, Y; Novo, G; Piquet, O

    2010-01-01

    The construction of Linac4, the new 160 MeV CERN H- injector, has started with the goal of improving the LHC injection chain from 2015 with a new higher energy linac. The low energy front end of Linac4 is based on a 352 MHz, 3-m long Radiofrequency Quadrupole (RFQ) accelerator [1]. The RFQ accelerates the 70 mA, 45 keV H- beam from the RF source to the energy of 3 MeV. The fabrication of the RFQ has started at CERN in 2009 and is presently in progress, aiming at the completion of the full structure by early 2011. The RFQ consists of three modules, one meter each; the fabrication alternates machining phases and stress relief cycles, for copper stabilization. Two brazing steps are required: one to assemble the four parts composing a module, and a second one to install the stainless steel flanges. In order to monitor that the tight mechanical and alignment budget is not exceeded, metrology measurements at the CERN workshop and RF bead-pull measurements are performed during the fabrication process. In this paper ...

  8. Experimental results of the laserwire emittance scanner for LINAC4 at CERN

    Science.gov (United States)

    Hofmann, Thomas; Boorman, Gary E.; Bosco, Alessio; Bravin, Enrico; Gibson, Stephen M.; Kruchinin, Konstantin O.; Raich, Uli; Roncarolo, Federico; Zocca, Francesca

    2016-09-01

    Within the framework of the LHC Injector Upgrade (LIU), the new LINAC4 is currently being commissioned to replace the existing LINAC2 proton source at CERN. After the expected completion at the end of 2016, the LINAC4 will accelerate H- ions to 160 MeV. To measure the transverse emittance of the H- beam, a method based on photo-detachment is proposed. This system will operate using a pulsed laser with light delivered via an optical fibre and subsequently focused onto the H- beam. The laser photons have sufficient energy to detach the outer electron and create H0/e- pairs. In a downstream dipole, the created H0 particles are separated from the unstripped H- ions and their distribution is measured with a dedicated detector. By scanning the focused laser beam across the H- beam, the transverse emittance of the H- beam can be reconstructed. This paper will first discuss the concept, design and simulations of the laser emittance scanner and then present results from a prototype system used during the 12 MeV commissioning of the LINAC4.

  9. Medium Power 352 MHZ solid state pulsed RF amplifiers for the CERN LINAC4 Project

    CERN Document Server

    Broere, J; Gómez Martínez, Y; Rossi, M

    2011-01-01

    Economic, modular and highly linear pulsed RF amplifiers have recently been developed to be used for the three buncher cavities in the CERN Linac4. The amplifiers are water-cooled and can provide up to 33 kW pulsed RF Power, 1.5 ms pulse length and 50 Hz repetition rate. Furthermore a 60 kW unit is under construction to provide the required RF Power for the debuncher cavity. The concept is based on 1.2 kW RF power modules using the latest 6th generation LDMOS technology. For integration into the CERN control environment the amplifiers have an internal industrial controller, which will provide easy control and extended diagnostic functions. This paper describes the construction, performance, including linearity, phase stability and EMC compliance tests

  10. Profile and Emittance Measurements at the CERN LINAC4 3 MeV test Stand

    CERN Document Server

    Zocca, F; Duraffourg, M; Focker, GJ; Gerard, D; Raich, U; Roncarolo, F

    2013-01-01

    A new 160 MeV H- Linac named Linac-4 will be built at CERN to replace the old 50 MeV proton Linac. The ion source, the 3 MeV Radio Frequency Quadrupole (RFQ) and the Medium Energy Beam Transport (MEBT) line hosting a chopper, have been commissioned in a dedicated test stand. Wire grids and wire scanners were used to measure the transverse beam profile and a slit/grid emittance meter was installed on a temporary test bench plugged at the RFQ and MEBT exit in different stages. The emittance meter slit was also used as a scanning scraper able to reconstruct the transverse profile by measuring the transmission with a downstream current transformer. On the same measurement bench, a spectrometer in conjunction with a wire grid allowed measuring the energy spread of the particles. This paper summarizes the measurement results that allowed characterizing the 3 MeV beam and discusses the present understanding of monitor performance.

  11. A three dimensional bunch shape monitor for the CERN proton linac

    International Nuclear Information System (INIS)

    The development, performance and test of the Three Dimensional Bunch Shape Monitor (3D-BSM) are presented. The principle of operation is based on the analysis of secondary electrons produced by a primary beam on a 0.1 mm tungsten wire to which a potential of -10 kV is applied. The horizontal particle distribution is provided by moving the wire across the primary beam. A horizontal slit located outside the primary beam area is moved vertically in order to analyse the secondary electron density distribution in the vertical direction. The longitudinal profile is measured as in the bunch length detector developed at INR earlier. The 3D-BSM has been installed and commissioned at the CERN proton linac. (author)

  12. Design of the superconducting section of the SPL Linac at CERN

    International Nuclear Information System (INIS)

    In order to set up a powerful proton source for a future Neutrino Factory, increasing at the same time the flux of protons available for new and existing facilities, CERN is studying a 2.2 GeV superconducting H- linac for 4 MW beam power, called SPL. The superconducting part of this linac covers the energy range from 120 MeV to 2.2 GeV. Three sections made of 352 MHz cavities with nominal beta of 0.52, 0.7 and 0.8 bring the beam energy up to 1 GeV. From this energy, superconducting cavities from LEP or beta 0.8 cavities can be used up to the final energy of 2.2 GeV. This paper covers the optimization for the superconducting part, the beam dynamics design principles, the matching between sections, and the results of multiparticle simulations with up to 50 million particles. To demonstrate the stability of the design, matched and mismatched input beams are used

  13. RF plasma conductivity in the CERN Linac4 H- ion source, comparison of simulations and measurements

    Science.gov (United States)

    Mattei, Stefano; Mochizuki, Shintaro; Nishida, Kenjiro; Shibata, Takanori; Lettry, Jacques; Hatayama, Akiyoshi; Tran, Minh Quang

    2014-10-01

    CERN Linac4 H- ion source is a Radio Frequency Inductively Coupled Plasma (RF-ICP) ion source. A solenoid antenna of 4 to 6 turns heats the plasma at a frequency of 2 MHz, in pulses of 0.5 ms and with a repetition rate of 0.8 to 2 Hz. In order to investigate the underlying plasma physics we have developed a Particle-In-Cell Monte Carlo Collision (PIC-MCC) code with the long-term goal to optimize the ion source operational parameters and geometry. This paper presents the determination of the complex plasma conductivity based on the PIC-MCC simulations. The resistive and reactive components of the plasma conductivity are computed as the proportionality factor between the RF electric field and the resulting plasma current. We present a parametric investigation as a function of the antenna current, gas pressure and antenna geometry. The simulation results, corresponding to the Linac4 ion source, are compared to the time-resolved optical emission photometry measurements of the Balmer lines obtained on a dedicated ion source test stand.

  14. 3D Emittances Tailoring Techniques and Optimization with Space Charge for the Future CERN PS Booster Operations with Linac4

    CERN Document Server

    Forte, Vincenzo; Benedetto, Elena; Bracco, Chiara; Cieslak-Kowalska, Magdalena; Di Giovanni, Gian Piero

    2016-01-01

    In the frame of the LIU (LHC Injectors Upgrade) project, the CERN PS Booster is going to be renovated to host a new H⁻ charge-exchange injection from the Linac4. One important feature of the new injection scheme is the possibility to tailor a wide range of 3D emittances for CERN's different users in an intensity span in the order of 5·10⁹ to 1.6·10¹³ protons per PSB ring. This paper gives an overview of 3D multi-turn injection techniques, focusing on the future LHC beams, which aim at reaching high brightness, and on highest intensity beams (ISOLDE), where losses are the main concern. Complete RF capture simulations and transverse injection maps, including space charge effects, are presented and also intended to be used during the commissioning with Linac4.

  15. Accuracy determination of the CERN Linac4 emittance measurements at the test bench for 3 and 12 Mev

    CERN Document Server

    Roncarolo, F; Bravin, E; Raich, U

    2010-01-01

    The CERN LINAC4 commissioning will start in 2011, at first in a laboratory test stand where the 45 KeV Hsource is already installed and presently tested, and later in the LINAC4 tunnel. A movable diagnostics bench will be equipped with the necessary sensors capable of characterizing the H- beam in different stages, from 3 MeV up to the first DTL tank at 12 MeV. In this paper we will discuss the accuracy of the transverse emittance measurement that will be performed with the slit-grid method. The system’s mechanical and geometric parameters have been determined in order to achieve the required resolution and sensitivity. Space charge effects during the beam transfer from the slit to the grid and scattering effects at the slit have been considered to determine the overall emittance measurement accuracy.

  16. Conceptual Design of the Low-Power and High-Power SPL A Superconducting H$^-$ Linac at CERN

    CERN Document Server

    Atieh, S; Aviles Santillana, I; Bartmann, W; Borburgh, J; Brunner, O; Calatroni, S; Capatina, O; Chambrillon, J; Ciapala, E; Eshraqi, M; Ferreira, L; Garoby, R; Goddard, B; Hessler, C; Hofle, W; Horvath-Mikulas, S; Junginger, T; Kozlova, E; Lebbos, E; Lettry, J; Liao, K; Lombardi, A M; Macpherson, A; Montesinos, E; Nisbet, D; Otto, T; Paoluzzi, M; Papke, K; Parma, V; Pillon, F; Posocco, P; Ramberger, S; Rossi, C; Schirm, K; Schuh, M; Scrivens, R; Torres Sanchez, R; Valuch, D; Valverde Alonso, N; Wegner, R; Weingarten, W; Weisz, S

    2014-01-01

    The potential for a superconducting proton linac (SPL) at CERN started to be seriously considered at the end of the 1990s. In the first conceptual design report (CDR), published in 2000 [1], most of the 352 MHz RF equipment from LEP was re-used in an 800 m long linac, and the proton beam energy was limited to 2.2 GeV. During the following years, the design was revisited and optimized to better match the needs of a high-power proton driver for neutrino physics. The result was a more compact (470 m long) accelerator capable of delivering 5 MW of beam power at 3.5 GeV, using state-of-the-art superconducting RF cavities at 704 MHz. It was described in a second CDR, published in 2006 [2]. Soon afterwards, when preparation for increasing the luminosity of the LHC by an order of magnitude beyond nominal became an important concern, a low-power SPL (LP-SPL) was studied as a key component in the renovation of the LHC injector complex. The combination of a 4 GeV LP-SPL injecting into a new 50 GeV synchrotron (PS2) was ...

  17. Laser based stripping system for measurement of the transverse emittance of H-beams at the CERN Linac4

    CERN Document Server

    Hofmann, T; Raich, U; Roncarolo, F; Cheymol, B

    2013-01-01

    The new LINAC4 at CERN will accelerate H- particles to 160 MeV and allow high brightness proton beam transfers to the Proton Synchrotron Booster, via a charge-exchange injection scheme. This paper describes the conceptual design of a laser system proposed for transverse profile and emittance measurements based on photon detachment of electrons from the H- ions. The binding energy of the outer electron is only 0.75 eV and can easily be stripped with a laser beam. Measuring the electron signal as function of the laser position allows the transverse beam profile to be reconstructed. A downstream dipole can also be used to separate the laser neutralized H0 atoms from the main H- beam. By imaging these H0 atoms as a function of laser position the transverse emittance can be reconstructed in the same way as in traditional slit-and-grid systems. By properly dimensioning the laser power and spot size, this method results in negligible beam losses and is therefore non-destructive. In addition, the absence of material ...

  18. Cern

    CERN Multimedia

    2009-01-01

    "La réparation de l'accélérateur géant de particules LHC, qui devrait redémarrer mi-novembre aprés une panne de plus d'un an, a coûté 23 millions d'euros, selon un haut responsable du Centre européen de recherche nucléaire (CERN), cité vendredi par les médias espagnols" (1 paragraph)

  19. Status of and Future Plans for the CERN Linac4 Emittance Meter based on Laser Electron-detachment and a Diamond Strip-detector

    CERN Document Server

    Bravin, E; Raich, U; Roncarolo, F; Zocca, F; Gibson, S; Kruchinin, KO; Bosco, A; Boorman, G; Griesmayer, E

    2014-01-01

    LINAC4 has started its staged commissioning at CERN. After completion it will accelerate high brightness H- beams to 160 MeV. To measure the transverse profile and emittance of the beam, a non-destructive method based on electron photo detachment is proposed, using a pulsed, fibre-coupled laser to strip electrons from the H- ions. The laser can be focused and scanned through the H- beam, acting like a conventional slit. A downstream dipole separates the neutral H0 beamlet, created by the laser interaction, from the main H- beam, so that it can be measured by a diamond stripdetector. Combining the H0 beamlet profiles with the laser position allows the transverse emittance to be reconstructed. A prototype of this instrument was tested while commissioning the LINAC4 at 3 and 12 MeV. In this paper we shall describe the experimental setup, challenges and results of the measurements, and also address the characteristics and performance of the diamond strip-detector subsystem. In addition, the proposal for a permane...

  20. Workshop: Linac90

    International Nuclear Information System (INIS)

    In 1960 the first linear accelerator (linac) conference was organized at Brookhaven by John Blewett. In the few years following, linear accelerator energies jumped from 50 MeV (at Brookhaven and CERN) to 2 GeV at Stanford. With the realization that, at least for electrons, circular accelerators have reached their practical limits, linacs are once more in the spotlight

  1. Pb injector at CERN

    International Nuclear Information System (INIS)

    For the CERN Lead Ion Accelerating Facility (achieved within a collaboration of several outside laboratories and with financial help of some member states) a new dedicated Linac has been built. This Linac has been installed in 1994 and served during two extended physics runs. This paper reviews the main characteristics of this machine and describes the first operational experience. Emphasis is put on new features of this accelerator, its associated equipment and on the peculiarities of heavy ions. (author)

  2. 25th anniversary for Linac-2

    CERN Multimedia

    2003-01-01

    On Friday, 3 October 2003, the Linac team celebrated a quarter century of successful operation of one of its linear accelerators: Linac-2, the proton workhorse of the CERN accelerator complex. Linac-2, CERN's linear proton accelerator, has now been running for 25 years - ample reason for a small celebration. About 30 members of the original team (10 of the initially more than 50 are still working at CERN), and other CERN personnel met on 3 October 2003. Linac-2 is the first link in the accelerator chain Linac-2 - PS Booster - PS - SPS and eventually LHC. Beams from Linac-2 are used after further acceleration in the CERN complex for SPS fixed target physics; for antiproton production for the Antiproton Decelerator (AD); for test beams in the East Experimental Hall and in the PS; for nuclear physics at ISOLDE; for LHC test beams and in the past for both ISR physics and Antiproton production (AA/AC) and test beams in LEAR. Linac-2 was built to obtain higher intensities and better stability than with ...

  3. LINAC 4

    CERN Multimedia

    2013-01-01

    On 13 March, a beam of negative hydrogen ions was injected into the first accelerator module of Linac 4, the linear accelerator which will replace Linac 2. The beam was created in the new source built for Linac 4 and accelerated from 45 kEV to 3 MeV by a radiofrequency quadrupole (RFQ) module, the first link in the Linac 4 accelerator chain. This crucial phase went off without a hitch. The video above shows the new Linac 4 ion source, the low-energy transfer line and the RFQ, with running commentary by Giulia Bellodi and Carlo Rossi from the Beams Department.

  4. The new Linac moves mountains

    CERN Multimedia

    2008-01-01

    The civil engineering work has started for Linac 4, one of the major renovation projects for the CERN accelerator complex. The work will be completed at the end of 2010 and the new linear accelerator is scheduled to be commissioned in 2013.

  5. Testing begins on Linac4

    CERN Multimedia

    Katarina Anthony

    2012-01-01

    On 3 August 2012, the Linac4 radiofrequency quadrupole (RFQ) module was installed at the accelerator test-stand in Building 152. The site will be the module’s home for almost a year, as the linear accelerator enters the assembly and testing stage.   Final module assembly is carried out before installation in Building 152.  Over the next Long Shutdown (LS2), Linac4 will replace the current Linac2 linear accelerator as the first link in CERN’s accelerator chain. It will deliver particles at 160 MeV to the PS Booster, more than triple the energy currently delivered by Linac2. But before the accelerator team can pop the champagne, the various elements of Linac4 will be tested and re-tested in facilities across CERN. “The first Linac4 tests are currently underway, starting with the CERN-built RFQ,” says Carlo Rossi, a physicist in the RF Group of the Beams (BE) Department and the RFQ project coordinator. “It’s an extremely impre...

  6. Superconducting linac

    International Nuclear Information System (INIS)

    This project has two goals: to design, build, and test a small superconducting linac to serve as an energy booster for heavy ions from an FN tandem electrostatic accelerator, and to investigate various aspects of superconducting rf technology. The main design features of the booster are described, a status report on various components (resonators, rf control system, linac control system, cryostats, buncher) is given, and plans for the near future are outlined. Investigations of superconducting-linac technology concern studies on materials and fabrication techniques, resonator diagnostic techniques, rf-phase control, beam dynamics computer programs, asymmetry in accelerating field, and surface-treatment techniques. The overall layout of the to-be-proposed ATLAS, the Argonne Tandem-Linac Accelerator System, is shown; the ATLAS would use superconducting technology to produce beams of 5 to 25 MeV/A. 6 figures

  7. Linac3 - 1992-1994

    CERN Multimedia

    CERN; A Van der Shueren; Jean-Claude Vialis

    1995-01-01

    This film reports the differents steps of the construction in differents places (Italy, Germany, France) from 29 October 1992 to 29 April 1994. This linac, commissioned in summer 1994, presently provides beams of 208Pb53+. A 14 GHz ECR ion source operating in the "afterglow" mode produces Pb 27+ ions at 2.5 keV/u. This beam is accelerated in an RFQ and a three tank IH linac to 4.2 MeV/u where stripping in a 1 um carbon foil to a charge state distribution centered around Pb53+ takes place. 53+ ions are selected from this mixture in a magnetic filter before being transported to the PS Booster and other circular machines. Linac3, the more common name for this machine, was built by a truly international collaboration involving France, Italy, Germany, Italy, Sweden, Switzerland, India, the Czech Republic and CERN.

  8. 150 Bulgarian students visit CERN

    CERN Multimedia

    Alizée Dauvergne

    2010-01-01

    Between 27 March and 8 April 2010, 150 Bulgarian students from the Astronomical Observatory in Varna visited CERN as part of the “From Galileo to CERN” programme. Bulgarian students participating in the "From Galileo to CERN" educational programme. “It’s interesting to combine astronomy and particle physics”, explains Svejina Dimitrova, organiser of the programme and Director of Varna Astronomical Observatory. The three groups, each one comprising 50 students, first visited Pisa, Padua and other places in Italy  related to Galileo’s life. “Thanks to the visit, students understood telescopes and why Galileo is such an important scientist”, says Svejina. After Italy, they came to CERN for three days and visited several sites: Linac, the Computer Centre CCC, etc. Another group of Bulgarian students in their visit to CERN. “They became aware that particle physics is not only the...

  9. Commissaire Moulin visits CERN

    CERN Multimedia

    CERN Bulletin

    2014-01-01

    The French actor and film-maker Yves Rénier was shown around the Laboratory on Friday 6 June by friends at CERN.   Yves Rénier at LEIR. (Photo: Ludwig Pregernig) A keen diver and star of the long-running French television police drama Commissaire Moulin, Yves Rénier took advantage of a stopover in Geneva on his way to the Red Sea to meet up with his friends from the CERN Diving Club, who were only too pleased to take him on a tour of the Laboratory. In the morning, Yves Rénier visited the CERN Control Centre (CCC), Linac2 and LEIR. After lunch at the brasserie in Restaurant No. 2, the actor continued his tour with the CERN Computer Centre, the SM18 superconducting magnet test facility, and lastly the ATLAS experiment. “Thank you so much for showing me around and introducing me to a world I knew so little about,” confided Yves Rénier. “It’s fascinating to see so many scientists of different cultures,...

  10. Development of an Eddy Current Septum for LINAC4

    CERN Document Server

    Barnes, M; Borburgh, J; Fowler, T; Goddard, B; Ueda, A; Weterings, W

    2008-01-01

    A linear accelerator (linac) is the first stage of the CERN accelerator complex. The linac defines the beam quality for subsequent stages of acceleration and the reliability has to be high as a fault of the linac shuts down all other machines. The existing linacs at CERN were designed 30 or more years ago: recent upgrades allowed the linacs to reach LHC requirements but also showed that they are at the limit of their brightness and intensity capabilities. A replacement Superconducting Proton Linac (SPL) has been proposed; the initial part of the SPL is termed LINAC4. The LINAC4 injection bump would be made up of a set of four pulsed dipole magnets; the first of these magnets (BS1) must act as a septum with a thin element dividing the high-field region of the circulating beam from the field-free region through which injected $H^{-}$ beam must pass. The initial specifications for BS1 required; a deflection of 66 mrad at 160 MeV, achieved with a peak field of 628 mT and a length of 250 mm: the field fall time wa...

  11. LINAC4 low energy beam measurements

    CERN Document Server

    Hein, L M; Lallement, J B; Lombardi, A M; Midttun, O; Posocco, P; Scrivens, R

    2012-01-01

    Linac4 is a 160 MeV normal-conducting linear accelerator for negative Hydrogen ions (H−), which will replace the 50 MeV proton Linac (Linac2) as linear injector for the CERN accelerators. The low energy part, comprising a 45 keV Low Energy Beam Transport system (LEBT), a 3 MeV Radiofrequency Quadrupole (RFQ) and a Medium Energy Beam Transport (MEBT) is being assembled in a dedicated test stand for pre-commissioning with a proton beam. During 2011 extensive measurements were done after the source and after the LEBT with the aim of preparing the RFQ commissioning and validating the simulation tools, indispensable for future source upgrades. The measurements have been thoroughly simulated with a multi-particle code, including 2D magnetic field maps, error studies, steering studies and the generation of beam distribution from measurements. Emittance, acceptance and transmission measurements will be presented and compared to the results of the simulations.

  12. CERN Choir

    CERN Multimedia

    Staff Association

    2015-01-01

      Do you like singing? The CERN Choir is looking for basses and tenors Join us! Programme Spring Session 2015: Donizetti: Misere & Missa di Gloria e Credo Bellini: Salve Regina Bruckner: Requiem in D minor Next concert: Sunday 31 May 2015 at 17:00 Musicales de Comesières (GE) Rehearsals at CERN Main Auditorium, building 500 On Wednesdays from 20.00 to 22:00 Membership fee: January to June 150 CHF September to December: 100CHF Contact: Baudouin.bleus@cern.ch Facebook/Choeur-du-CERN

  13. Alignment and Field Error Tolerance in Linac4

    CERN Document Server

    Bellodi, G; Garcia Tudela, M; Hein, L; Lallement, J B; Lanzone, S; Lombardi, A M; Posocco, P; Sargsyan, E

    2011-01-01

    LINAC4 [1] is a linear accelerator for negative Hydrogen ions (H−), which will replace the 50 MeV proton LINAC (LINAC2) as linear injector for the CERN accelerators. The higher output energy (160 MeV) together with charge-exchange injection will allow increasing beam intensity in the following machines. LINAC4 is about 80 m long, normal-conducting, and will be housed in a tunnel 12 m below ground on the CERN Meyrin site. The location has been chosen to allow using LINAC4 as the first stage of acceleration for a Multi-MegaWatt superconducting LINAC (SPL [2]). A 60 m long transfer line brings the beam towards the present LINAC2-to-PS Booster transfer line, which is joined at the position of BHZ20. The new transfer line consists of 17 new quadrupoles, an RF cavity and 4 bending magnets to adjust both the direction and the level for injection into the PS Booster. End-to-end beam dynamics simulations have been carried out in parallel with the codes PATH [3] and TRACEWIN[4]. Following the definition of the layout...

  14. Courrier CERN

    CERN Multimedia

    2015-01-01

    Example of the cover page of the French version of the CERN Courier; Courrier CERN from January 1962. The journal was published both in English and French up to volume 45, no. 5, June 2005. Since then there is a single-language edition where articles are published either in French or English with an abstract in the other language.

  15. CERN & Society

    CERN Multimedia

    2016-01-01

    Non Member State Summer Students 2015 are interviewed about their decision to study STEM subjects, to apply for CERN NMSSS programme, their experience onsite @CERN and takeaways, their future goals and aspirations, offering also advice to fellow students.The Non Member State Summer Student Programme stands for a unique opportunity for students from all over the world to spend their summer at CERN in Geneva, getting involved in some of the world’s biggest experiments. For 8 weeks, summer students gather on-site at CERN and join in the day-to-day work of research. The Programme targets advanced undergraduate and beginning graduate students of physics, computing and engineering, particularly from developing countries. Participating students receive scientific training, attend lectures and work on laboratory-based projects alongside with CERN experts and fellow students.

  16. Linear Accelerator (LINAC)

    Science.gov (United States)

    ... News Physician Resources Professions Site Index A-Z Linear Accelerator A linear accelerator (LINAC) customizes high energy x-rays to ... ensured? What is this equipment used for? A linear accelerator (LINAC) is the device most commonly used ...

  17. CERN Rocks

    CERN Multimedia

    2004-01-01

    The 15th CERN Hardronic Festival took place on 17 July on the terrace of Rest 3 (Prévessin). Over 1000 people, from CERN and other International Organizations, came to enjoy the warm summer night, and to watch the best of the World's High Energy music. Jazz, rock, pop, country, metal, blues, funk and punk blasted out from 9 bands from the CERN Musiclub and Jazz club, alternating on two stages in a non-stop show.  The night reached its hottest point when The Canettes Blues Band got everybody dancing to sixties R&B tunes (pictured). Meanwhile, the bars and food vans were working at full capacity, under the expert management of the CERN Softball club, who were at the same time running a Softball tournament in the adjacent "Higgs Field". The Hardronic Festival is the main yearly CERN music event, and it is organized with the support of the Staff Association and the CERN Administration.

  18. LINAC4 takes a tour of Europe

    CERN Multimedia

    Katarina Anthony

    2011-01-01

    Along the German Autobahnen, a truck carrying 20 tonnes of copper is on its way to Poland. The metal has already made a short tour of Europe, yet the drive across the high-speed highway is only the beginning of its transformation into CERN’s next linear accelerator, LINAC4.   Grzegorz Wrochna (left), director of the Andrzej Soltan Institute for Nuclear Studies (IPJ), and Rolf Heuer (right), CERN DG, sign the framework agreement between the two institutes. By the summer of 2012, the PI-Mode Structures (PIMS) will be constructed and completely installed in the LINAC4 tunnel. The PIMS cavities are the final accelerating structures needed for LINAC4, and have been designed to accelerate protons from 100 to 160MeV. While the first cavity was built entirely at CERN, construction of the remaining cavities has become a larger, multi-national operation. In a 1 million euro framework agreement signed on 11 February by the Director-General, the Andrzej Soltan Institute for Nuclear Studies in Swie...

  19. Upgrade Issues for the CERN Accelerator Complex

    CERN Document Server

    Garoby, R

    2008-01-01

    The Large Hadron Collider (LHC) at CERN is at a very advanced stage of hardware commissioning and the first beam collisions in the experiments are expected during the year 2008. In line with the recommendations issued in 2006 by the European Strategy Group for Particle Physics, work has now started for maximizing the physics reach of the LHC and for preparing for other foreseeable needs. Beyond upgrades in the LHC itself, mainly in the optics of the insertions, the injector complex has to be renewed to deliver beam with upgraded characteristics with a high reliability. In a first phase, a new 160 MeV H-linac ("Linac4") will be built to replace the present 50 MeV proton linac (Linac2) and extensive consolidation will be made. In a second phase, the present 26 GeV PS and its set of injectors (Linac2 + PSB) are planned to be replaced with a ~50 GeV synchrotron ("PS2") using a ~4 GeV superconducting proton linac ("SPL") as injector. The SPS itself will also be the subject of major improvements, to be able to cope...

  20. Linac working group technical summary

    International Nuclear Information System (INIS)

    The working group looked at linac injectors for a Superconducting Super Collider (SSC) or Hadron Facility. Discussion includes rf power, a possible strawman linac, ion source/injector, radio-frequency quadrupole, and coupled-cavity linac

  1. Linac 1, inner structure

    CERN Multimedia

    1968-01-01

    This photo shows the inner structure of Linac 1. As injector to the PS, and later to the Booster, Linac 1 accelerated protons to 50 MeV, but it has also accelerated heavier ions. Fitted with a 520 keV RFQ pre-injector (instead of the original Cockcroft-Walton generator), it delivered protons and heavy ions to LEAR, from 1982 to 1992. After 33 years of faithful service, Linac 1 was dismantled in 1992 to make room for Linac 3 (Pb ions).

  2. CERN technology in the service of medicine

    CERN Multimedia

    2001-01-01

    The prototype of the first module of the LInac BOster (LIBO) has been constructed and tested at CERN. This new medical accelerator offers new perspectives in deep-seated tumour treatment.   Accelerator technology developed at CERN is set to bring about important advances in cancer therapy. The linac booster - LIBO - project aims to build a 3GHz proton linear accelerator to boost to 200 MeV the energy of the beam from 50-70 MeV cyclotrons, existing in several hospitals and laboratories. This will allow deep-seated tumours to be treated (see box). The prototype of the first LIBO module has just passed high power RF tests at CERN. Two members of the LIBO collaboration, Riccardo Zennaro and Paolo Berra, with the first LIBO module installed in the LIL tunnel. The LIBO idea goes back to 1993 when it was conceived by CERN's Ugo Amaldi, founder of Italy's TERA foundation. From the beginning, Mario Weiss, a former CERN staff member has led the project. A decisive step was taken in 1998 when a collaboration...

  3. Linac4 H⁻ ion sources.

    Science.gov (United States)

    Lettry, J; Aguglia, D; Alessi, J; Andersson, P; Bertolo, S; Briefi, S; Butterworth, A; Coutron, Y; Dallocchio, A; David, N; Chaudet, E; Faircloth, D; Fantz, U; Fink, D A; Garlasche, M; Grudiev, A; Guida, R; Hansen, J; Haase, M; Hatayama, A; Jones, A; Koszar, I; Lallement, J-B; Lombardi, A M; Machado, C; Mastrostefano, C; Mathot, S; Mattei, S; Moyret, P; Nisbet, D; Nishida, K; O'Neil, M; Paoluzzi, M; Scrivens, R; Shibata, T; Steyaert, D; Thaus, N; Voulgarakis, G

    2016-02-01

    CERN's 160 MeV H(-) linear accelerator (Linac4) is a key constituent of the injector chain upgrade of the Large Hadron Collider that is being installed and commissioned. A cesiated surface ion source prototype is being tested and has delivered a beam intensity of 45 mA within an emittance of 0.3 π ⋅ mm ⋅ mrad. The optimum ratio of the co-extracted electron- to ion-current is below 1 and the best production efficiency, defined as the ratio of the beam current to the 2 MHz RF-power transmitted to the plasma, reached 1.1 mA/kW. The H(-) source prototype and the first tests of the new ion source optics, electron-dump, and front end developed to minimize the beam emittance are presented. A temperature regulated magnetron H(-) source developed by the Brookhaven National Laboratory was built at CERN. The first tests of the magnetron operated at 0.8 Hz repetition rate are described. PMID:26932021

  4. Linac4 H- ion sources

    Science.gov (United States)

    Lettry, J.; Aguglia, D.; Alessi, J.; Andersson, P.; Bertolo, S.; Briefi, S.; Butterworth, A.; Coutron, Y.; Dallocchio, A.; David, N.; Chaudet, E.; Faircloth, D.; Fantz, U.; Fink, D. A.; Garlasche, M.; Grudiev, A.; Guida, R.; Hansen, J.; Haase, M.; Hatayama, A.; Jones, A.; Koszar, I.; Lallement, J.-B.; Lombardi, A. M.; Machado, C.; Mastrostefano, C.; Mathot, S.; Mattei, S.; Moyret, P.; Nisbet, D.; Nishida, K.; O'Neil, M.; Paoluzzi, M.; Scrivens, R.; Shibata, T.; Steyaert, D.; Thaus, N.; Voulgarakis, G.

    2016-02-01

    CERN's 160 MeV H- linear accelerator (Linac4) is a key constituent of the injector chain upgrade of the Large Hadron Collider that is being installed and commissioned. A cesiated surface ion source prototype is being tested and has delivered a beam intensity of 45 mA within an emittance of 0.3 π ṡ mm ṡ mrad. The optimum ratio of the co-extracted electron- to ion-current is below 1 and the best production efficiency, defined as the ratio of the beam current to the 2 MHz RF-power transmitted to the plasma, reached 1.1 mA/kW. The H- source prototype and the first tests of the new ion source optics, electron-dump, and front end developed to minimize the beam emittance are presented. A temperature regulated magnetron H- source developed by the Brookhaven National Laboratory was built at CERN. The first tests of the magnetron operated at 0.8 Hz repetition rate are described.

  5. CERN choir

    CERN Multimedia

    2004-01-01

    Don't forget a special performance of Joseph Haydn's Creation, an oratorio in three parts, given by the CERN choir and the Annecy choir Pro Musica, this Sunday at 8.30 p.m. at the Grand Casino. Tickets (38 CHF) are available at Fnac Rive and Balexert.

  6. Robot adventures at CERN

    CERN Multimedia

    2015-01-01

    Imagine if the CERN robots had an end-of-year party... From retrieving data tapes to handling material safely, the robots at CERN fulfill numerous tasks. Find out more: http://cern.ch/go/VjX7 Produced by: CERN Video Productions Director: Christoph M. Madsen Copyright © 2015 CERN. Terms of use: http://copyright.web.cern.ch/

  7. CERN Heavy-Ion Facility design report

    International Nuclear Information System (INIS)

    The design of the CERN Heavy-Ion Facility is described. This facility will be based on a new ion linear accelerator (Linac 3), together with improvements to the other accelerators of the CERN complex to allow them to cope with heavy ions, i.e. to the Proton Synchrotron Booster (PSB), the Proton Synchrotron (PS) and the Super Proton Synchrotron (SPS). For this reference design, the pure isotope of lead, 208Pb, is considered. The bulk of the report describes Linac 3, a purpose-built heavy-ion linac mainly designed and constructed in collaboration with several CERN member state laboratories, but also with contributions from non-member states. Modifications and improvements to existing CERN accelerators essentially concern the RF acceleration, beam control and beam monitoring (all machines), beam kickers and septa at the input and output of the PSB, and major vacuum improvements, aiming to reduce the pressure by factors of at least seven and three in the PSB and PS respectively. After injection from the Electron Cyclotron Resonance source at 2.5 keV/u the partially stripped heavy-ion beam is accelerated successively by a Radio Frequency Quadrupole and an Interdigital-H linac to 4.2 MeV/u. After stripping to 208Pb53+, the beam is again accelerated, firstly in the PSB (to 98.5 MeV/u), then in the PS (to 4.25 GeV/u). The final stage of acceleration in the SPS takes the fully stripped 208Pb82+ ions to 177 GeV/u, delivering a beam of 4.108 ions per SPS supercycle (15.2 s) to the experiments. The first physics run with lead ions is scheduled for the end of 1994. Finally, some requirements for carrying out heavy-ion physics at the Large Hadron Collider are mentioned. (orig.)

  8. Linac pre-injector

    CERN Multimedia

    1965-01-01

    New accelerating column of the linac pre-injector, supporting frame and pumping system. This new system uses two mercury diffusion pumps (in the centre) and forms part of the modifications intended to increase the intensity of the linac. View taken during assembly in the workshop.

  9. The Linac4 Project

    CERN Document Server

    Lombardi, Alessandra

    2016-01-01

    Linac4 is a normal conducting, 160 MeV H- ion accelerator that is being constructed within the scope of the LHC injectors upgrade project. Linac4 will be connected to the Proton Synchrotron Booster (PSB) during the next long LHC shut-down and it will replace the current 50 MeV hadron linac, Linac2. Linac4 is presently being commissioned, with the aim of achieving the final energy at the end of the year. A test of the injection chicane and a reliability run will follow. The beam commissioning, in steps of increasing energy, has been prepared by an extended series of studies and interlaced with phases of installation. In this paper we will detail the beam dynamics challenges and we will report on the commissioning results.

  10. Status and plans for Linac4 installation and commissioning

    CERN Document Server

    Vretenar, M; Arnaudon, L; Baudrenghien, P; Bellodi, G; Broere, J; Brunner, O; Comblin, J F; Coupard, J; Dimov, V A; Fuchs, J F; Funken, A; Gerigk, F; Granemann Souza, E; Hanke, K; Hansen, J; Yarmohammadi Satri, M; Kozsar, I; Lallement, J B; Lenardon, F; Lettry, J; Lombardi, A M; Maglioni, C; Midtun, O; Mikulec, B; Nisbet, D; Paoluzzi, M; Raich, U; Ramberger, S; Roncarolo, F; Rossi, C; Sanchez Alvarez, J L; Scrivens, R; Tan, J; Valerio-Lizarraga, C A; Vollaire, J; Wegner, R; Weisz, S; Zocca, F

    2014-01-01

    Linac4 is a normal conducting 160 MeV Hˉ linear accelerator presently being installed and progressively commissioned at CERN. It will replace the ageing 50 MeV Linac2 as injector of the PS Booster (PSB), increasing at the same time its brightness by a factor of two thanks to the higher injection energy. This will be the first step of a program to increase the beam brightness in the LHC injectors for the needs of the High-Luminosity LHC project. After a series of beam measurements on a dedicated test stand the 3 MeV Linac4 front-end, including ion source, RFQ and a beam chopping line, has been recommissioned at its final position in the Linac4 tunnel. Commissioning of the following section, the Drift Tube Linac, is starting. Beam commissioning will take place in steps of increasing energy, to reach the final 160 MeV in 2015. An extended beam measurement phase including testing of stripping equipment for the PSB and a year-long test run to assess and improve Linac4 reliability will take place in 2016, prior to...

  11. CERN OVERVIEW animation

    CERN Multimedia

    Arzur Catel Torres

    2015-01-01

    This animation shows how the Large Hadron Collider (LHC) works. The film begins with an aerial view of CERN near Geneva, with outlines of the accelerator complex, including the underground Large Hadron Collider (LHC), 27-km in circumference. The positions of the four largest LHC experiments, ALICE, ATLAS, CMS and LHCb are revealed before we see protons travelling around the LHC ring. The proton source is a simple bottle of hydrogen gas. An electric field is used to strip hydrogen atoms of their electrons to yield protons. Linac 2, the first accelerator in the chain, accelerates the protons to the energy of 50 MeV. The beam is then injected into the Proton Synchrotron Booster (PSB), which accelerates the protons to 1.4 GeV, followed by the Proton Synchrotron (PS), which pushes the beam to 25 GeV. Protons are then sent to the Super Proton Synchrotron (SPS) where they are accelerated to 450 GeV. The protons are finally transferred to the two beam pipes of the LHC. The beam in one pipe circulates clockwise while ...

  12. LINAC4 - Views of the 3 MeV Front-end (H- Source, LEBT, RFQ, MEBT) with Test Bench.

    CERN Multimedia

    Anna Pantelia

    2013-01-01

    The Linac4 is the new linear accelerator that will replace Linac2 as proton low energy injector in the LHC accelerator chain. On 14 November, members of the Linac4 collaboration and the CERN Operation Group were brought together for their first “real day” in the Linac4 Control Room. Together, they successfully accelerated their first hydrogen ion beam to 3 MeV. It was an exciting moment for everyone involved marked the start of one of the most critical commissioning phases for the new accelerator.

  13. Pulsed SC Proton Linac

    OpenAIRE

    Ouchi, N.; Chishiro, E.; Tsukishima, C.; Mukugi, K.

    2000-01-01

    The superconducting (SC) proton linac is proposed in the JAERI/KEK Joint Project for a high-intensity proton accelerator in the energy region from 400 to 600 MeV. Highly stable fields in the SC cavities are required under the dynamic Lorentz force detuning. A new model describing the dynamic Lorentz detuning has been developed and the validity has been confirmed experimentally. The model has been applied successfully to the rf control simulation of the SC proton linac.

  14. The Superconducting Proton Linac plasma generator and Linac4 H-Ion source

    International Nuclear Information System (INIS)

    Full text: In the course of the sLHC project, CERN is studying a new plasma generator for the Superconducting Proton Linac (SPL) similar to the RF driven volume H- source of Linac4. The new plasma generator has been designed for a higher duty factor of up to 6% and has therefore been equipped with several cooling systems for the ceramic plasma chamber, ignition element, extraction area, RF antenna and matching network. This resulted in a redesign of the magnetic cusp configuration which had to be displaced and reinforced by the use of Halbach magnets which are now protected against heating due to RF induced eddy currents by an effective copper shielding. The Teststand of the plasma generator and its RF generator have been commissioned and thorough measurements are performed, including the plasma's light spectrum, thermal imaging of the source, RF-plasma coupling characterisation and Langmuir probe measurements of the plasma. (author)

  15. UK @ CERN

    CERN Multimedia

    FI Department

    2008-01-01

    17 – 18 November 2008 9.00 a.m. - 5.00 p.m. on Monday 17 November 9.00 a.m. - 5.00 p.m. on Tuesday 18 November Individual meetings will take place in the technicians’ or engineers’ offices. The companies will contact relevant users/technicians but anyone wishing to arrange an appointment with a specific company can contact Caroline Laignel (mailto:caroline.laignel@cern.ch, tel. 73722). A list of the companies is available from all departmental secretariats and on the web at: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm List of companies: 1. Caburn MDC Europe Ltd. 2. Croft Engineering Services 3. Cryox Ltd. 4. Goodfellow Cambridge Ltd. 5. Gravatom Engineering Systems Ltd. 6. High Voltage Technology 7. Lilco Ltd. 8. Micro Metalsmiths Ltd. 9. Photek Ltd. 10. Shadow Robot Company 11. Sundance Multiprocessor Technology Ltd. 12. Tessella plc 13. Thermal Resources Management Ltd. 14. Torr Scientific Ltd. For further information please contact Mrs C. Laignel, FI-DI, tel. 7372...

  16. CERN moves to http://home.cern

    CERN Multimedia

    2015-01-01

    A new top-level domain for CERN will be inaugurated next week, with the migration of the core website to http://home.cern.   The new home.cern webpage. The .cern top-level domain is intended for the exclusive use of CERN and its affiliates, and will soon be open for applications from within the community. Clear governance mechanisms for registration and management of .cern domains have been put in place. Applications for domains may be submitted by current members of the CERN personnel, and must be sponsored by a CERN entity such as a department, experiment, project or CERN-recognised experiment. For more information please refer to the registration policy. The acquisition of the .cern top-level domain was negotiated via ICANN’s new gTLD programme by a board comprising members of the CERN Legal Service, Communications group and IT department. .cern is one of over 1,300 new top-level domains that will launch over the coming months and years. The .cern domain nam...

  17. CERN/KEK: Very high accelerating gradients

    International Nuclear Information System (INIS)

    Full text: A world-wide effort is under way to develop linear electron-positron colliders so that physics experiments can be extended into a range of energies where circular machines (necessarily much larger than CERN's 27-kilometre LEP machine) would be crippled by synchrotron radiation. CERN is studying the feasibility of building a 2 TeV machine called CLIC powered not by individual klystrons, but by a high intensity electron 'drive' linac running parallel to the main linac (November 1990, page 7). This drive linac will itself be powered by similar superconducting cavities to those developed for LEP. A high gradient is an obvious design aim for any future high energy linear collider because it makes it shorter and therefore cheaper - the design figure for the CLIC machine is 80 MV/m. The CLIC study group has taken a significant step forward in demonstrating the technical feasibility of their machine by achieving peak and average accelerating gradients of 137 MV/m and 84 MV/m respectively in a short section of accelerating structure during high gradient tests at the Japanese KEK Laboratory last year. This result obtained within the framework of a CERN/KEK collaboration on linear colliders was obtained using a 20-cell accelerating section built at CERN using state-of the- art technology which served both as a model for CLIC studies as well as a prototype for the Japanese Linear Collider studies. The operating frequency of the model accelerating section is 2.6 times lower than the CLIC frequency but was chosen because a high power r.f. source and pulse compression scheme has been developed for this frequency at KEK. Testing CLIC models at 11.4 GHz is however more stringent than at 30 GHz because the chance of electrical breakdown increases as the frequency is lowered. This recent result clearly demonstrates that a gradient of 80 MV/m is feasible

  18. Full power to the first Linac4 module

    CERN Multimedia

    Francesco Poppi

    2010-01-01

    Since last week the first of a total of 23 accelerating structures for Linac4 has been undergoing high-power tests. Although still a prototype, this structure is destined to be the first of the 12 PIMS cavities to be installed in the Linac4 tunnel and it has been completely designed, developed and constructed at CERN.   The PIMS prototype. The new Linac4 has 4 different types of accelerating structures. The PI-Mode Structures (PIMS) are the last stage and are designed to accelerate protons up to 160 MeV. “PIMS have never before been used to accelerate protons”, explains Frank Gerigk, the project engineer responsible for the Linac4 accelerating structures. “In LEP, they were used to accelerate electrons, and now we have modified them and improved several design features to make them suitable for protons”. The first prototype was entirely manufactured in the CERN workshop. Due to the size of the pieces it was difficult to achieve and preserve the required to...

  19. Linac4: injecting new life into the LHC

    CERN Multimedia

    Antonella Del Rosso

    2015-01-01

    Construction work is nearing completion on the ion source for Linac4, the new linear accelerator that forms part of the LHC injector upgrade programme. Here we find out more about this essential component of the accelerator chain, designed and built at CERN.     The image shows the Linac4 H- source. The red light is the alpha line of the visible hydrogen emission spectrum. The ion source is a key component of Linac4, the linear accelerator that from 2018 will supply H- ions (hydrogen atoms with an extra electron) at 160 MeV for injection into the accelerator complex. As the only ion source at CERN, Linac4 must be highly reliable, which requires a full understanding of the production mechanisms, the simulation of physical processes and the validation of those processes through experimentation. “This source is the result of much fruitful collaboration,” says Jacques Lettry of the BE department. “Its design was inspired by the many sources of th...

  20. 19th November 2010 - President of Application of Detectors and Accelerators to Medecine A. Colussi signs the guest book with CERN Director-General R. Heuer, on the occassion of the inauguration of the First Unit of the Linac for Image Guided Hadron Therapy (LIGHT) in building 904.

    CERN Multimedia

    Maximilien Brice

    2010-01-01

    CERN-EX-1011305 14: from left to right: ADAM Vice President D. Campi, ADAM Scientific Committee Member G. Brianti, ADAM Scientific Committee Chair U. Amaldi, CERN Director-General R. Heuer, ADAM President A. Colussi, Italian Ambassador to the U.N. L. Mirachian, CERN Director for Research and Scientific Computing S. Bertolucci, CERN Physics Department Head P. Bloch, ADAM Board of Directors Member C. Lamprecht, ADAM Scientific Committee Member F. Sauli, P. Pearce and J. Bernier.

  1. Intense positron beams: linacs

    International Nuclear Information System (INIS)

    Beams of monoenergetic positrons with energies of a few eV to many keV have been used in experiments in atomic physics, solid-state physics and materials science. The production of positron beams from a new source, an electron linac, is described. Intense, pulsed beams of low-energy positrons were produced by a high-energy beam from an electron linac. The production efficiency, moderator geometry, beam spot size and other positron beam parameters were determined for electrons with energies from 60 to 120 MeV. Low-energy positron beams produced with a high-energy electron linac can be of much higher intensity than those beams currently derived from radioactive sources. These higher intensity beams will make possible positron experiments previously infeasible. 10 references, 1 figure

  2. High field electron linacs

    International Nuclear Information System (INIS)

    High field electron linacs are considered as potential candidates to provide very high energies beyond LEP. Since almost twenty years not much improvement has been made on linac technologies as they have been mostly kept at low and medium energies to be used as injectors for storage rings. Today, both their efficiency and their performances are being reconsidered, and for instance the pulse compression sheme developed at SLAC and introduced to upgrade the energy of that linac is a first step towards a new generation of linear accelerators. However this is not enough in terms of power consumption and more development is needed to improve both the efficiency of accelerating structures and the performances of RF power sources

  3. UK @ CERN

    CERN Multimedia

    FI Department

    2008-01-01

    17 – 18 November 2008 9.00 a.m. - 5.00 p.m. on Monday 17 November 9.00 a.m. - 5.00 p.m. on Tuesday 18 November Individual meetings will take place in the technicians’ or engineers’ offices. The companies will contact relevant users/technicians but anyone wishing to arrange an appointment with a specific company can contact Caroline Laignel (caroline.laignel@cern.ch, tel. 73722). A list of the companies is available from all departmental secretariats and on the web here. List of companies: 1. Caburn MDC Europe Ltd. 2. Croft Engineering Services 3. Cryox Ltd. 4. Goodfellow Cambridge Ltd. 5. Gravatom Engineering Systems Ltd. 6. High Voltage Technology 7. Lilco Ltd. 8. Micro Metalsmiths Ltd. 9. Photek Ltd. 10. Shadow Robot Company 11. Sundance Multiprocessor Technology Ltd. 12. Tessella plc 13. Thermal Resources Management Ltd. 14. Torr Scientific Ltd. For further information please contact Mrs C. Laignel, FI-DI, tel. 73722.

  4. This summer, go behind-the-scenes of CERN in photos in the Microcosm

    CERN Multimedia

    2016-01-01

    Find out the best photos of the 2015 CERN Photowalk competition in the Microcosm.   Photo: Olivier Miche. The best photos taken at the 2015 CERN Photowalk competition are now exhibited in the Microcosm, for the whole summer period. Through this photographic exhibition, the visitors will be taken behind-the scenes of CERN, through the main workshop, the ISOLDE facility and the future accelerator Linac 4. They will also take a glimpse of the life on the CERN campus.

  5. The Fermilab Linac Upgrade

    International Nuclear Information System (INIS)

    The Fermilab Linac Upgrade is planned to increase the energy of the H- linac from 200 to 400 MeV. This is intended to reduce the incoherent space-charge tuneshift at injection into the 8 GeV Booster which can limit either the brightness or the total intensity of the beam. The Linac Upgrade will be achieved by replacing the last four 201.25 MHz drift-tube tanks which accelerate the beam from 116 to 200 MeV, with seven 805 MHz side-coupled cavity modules operating at an average axial field of abut 7.5 MV/m. This will allow acceleration to 400 MeV in the existing Linac enclosure. Each accelerator module will be driven with a klystron-based rf power supply. A prototype rf modulator has been built and tested at Fermilab, and a prototype 12 MW klystron is being fabricated by Litton Electron Devices. Fabrication of production accelerator modules is in progress. 8 figs., 4 tabs

  6. The Fermilab Linac Upgrade

    Energy Technology Data Exchange (ETDEWEB)

    Noble, R.J.

    1991-02-01

    The Fermilab Linac Upgrade is planned to increase the energy of the H- linac from 200 to 400 MeV. This is intended to reduce the incoherent space-charge tuneshift at injection into the 8 GeV Booster which can limit either the brightness or the total intensity of the beam. The Linac Upgrade will be achieved by replacing the last four 201.25 MHz drift-tube tanks which accelerate the beam from 116 to 200 MeV, with seven 805 MHz side-coupled cavity modules operating at an average axial field of abut 7.5 MV/m. This will allow acceleration to 400 MeV in the existing Linac enclosure. Each accelerator module will be driven with a klystron-based rf power supply. A prototype rf modulator has been built and tested at Fermilab, and a prototype 12 MW klystron is being fabricated by Litton Electron Devices. Fabrication of production accelerator modules is in progress. 8 figs., 4 tabs.

  7. TOP LINAC design

    International Nuclear Information System (INIS)

    The report describes a linear accelerator for protons named TOP LINAC designed for the TOP (Terapia Oncologica con Protoni, Oncological Protontherapy) project launched by the Italian National Institute of Health (Istituto Superiore di Sanita', ISS) to explore in collaboration with the biggest Oncological Hospital in Rome (Istituto Regina Elena, IRE) the potentialities of the therapy with accelerated protons and establish guide lines for the application of this new type of radiotherapy in comparison with the more traditional electron and x-rays radiotherapy. The concept of a compact accelerator for protontherapy applications bore within the Italian Hadrontherapy Collaboration (TERA Collaboration) with the aim to diffuse the protontherapy on the National territory. The ISS program plans to use the TOP linac proton beam also for production of PET (Positron Emission Tomography) radioisotopes and radiobiology studies. Official agreements are in course between ISS and ENEA which provides its experience in the industrial and medical accelerators for the design and the construction of the TOP linac. The accelerator that will be the first 3 GHz proton linac in the world, will be composed of a 428.3 MHz 7 Me V RFQ + DTL injector followed by a 7-65 Me V section of a 3 GHz SCDTL structure and a 65 - 200 Me V variable energy SCL 3 GHz structure. In particular the SCDTL section uses a highly innovative accelerating structure patented by ENEA. In this report the clinical and physical requests are discussed and a preliminary design of the whole machine is given

  8. Designing self-matching linacs

    International Nuclear Information System (INIS)

    The present trend in ion-linac design is to begin with a radio-frequency quadrupole (RFQ) linac followed by one or more drift-tube linac (DTL) tanks in which permanent-magnet quadrupoles are used for transverse focusing. The lack of adjustable elements (knobs) strongly suggests that one should seek linac designs with intertank matching solutions that are insensitive to beam currents and emittances, which can be accomplished if there are no sharp discontinuities in the focusing properties along the entire linac. Guidelines are presented for linac design and describe techniques for longitudinal as well as transverse matching between tanks. For a wide range of beam currents and emittances, a beam matched at the entrance to the RFQ should remain well matched throughout the entire linac

  9. Drift tubes of Linac 2

    CERN Multimedia

    1977-01-01

    With the advent of the 800 MeV PS Booster in 1972, the original injector of the PS, a 50 MeV Alvarez-type proton linac, had reached its limits, in terms of intensity and stability. In 1973 one therefore decided to build a new linac (Linac 2), also with a drift-tube Alvarez structure and an energy of 50 MeV. It had a new Cockcroft-Walton preinjector with 750 keV, instead of the previous one with 500 keV. Linac 2 was put into service in 1980. The old Linac 1 was then used for the study of, and later operation with, various types of ions. This picture shows Linac 2 drift-tubes, suspended on stems coming from the top, in contrast to Linac 1, where the drift-tubes stood on stems coming from the bottom.

  10. Beam halo in high-intensity hadron linacs

    International Nuclear Information System (INIS)

    This document aims to cover the most relevant mechanisms for the development of beam halo in high-intensity hadron linacs. The introduction outlines the various applications of high-intensity linacs and it will explain why, in the case of the CERN Superconducting Proton Linac (SPL) study a linac was chosen to provide a high-power beam, rather than a different kind of accelerator. The basic equations, needed for the understanding of halo development are derived and employed to study the effects of initial and distributed mismatch on high-current beams. The basic concepts of the particle-core model, envelope modes, parametric resonances, the free-energy approach, and the idea of core-core resonances are introduced and extended to study beams in realistic linac lattices. The approach taken is to study the behavior of beams not only in simplified theoretical focusing structures but to highlight the beam dynamics in realistic accelerators. All effects which are described and derived with simplified analytic models, are tested in realistic lattices and are thus related to observable effects in linear accelerators. This approach involves the use of high-performance particle tracking codes, which are needed to simulate the behavior of the outermost particles in distributions of up to 100 million macro particles. In the end a set of design rules are established and their impact on the design of a typical high-intensity machine, the CERN SPL, is shown. The examples given in this document refer to two different design evolutions of the SPL study: the first conceptual design report (SPL I) and the second conceptual design report (SPL II). (orig.)

  11. Beam halo in high-intensity hadron linacs

    Energy Technology Data Exchange (ETDEWEB)

    Gerigk, F.

    2006-12-21

    This document aims to cover the most relevant mechanisms for the development of beam halo in high-intensity hadron linacs. The introduction outlines the various applications of high-intensity linacs and it will explain why, in the case of the CERN Superconducting Proton Linac (SPL) study a linac was chosen to provide a high-power beam, rather than a different kind of accelerator. The basic equations, needed for the understanding of halo development are derived and employed to study the effects of initial and distributed mismatch on high-current beams. The basic concepts of the particle-core model, envelope modes, parametric resonances, the free-energy approach, and the idea of core-core resonances are introduced and extended to study beams in realistic linac lattices. The approach taken is to study the behavior of beams not only in simplified theoretical focusing structures but to highlight the beam dynamics in realistic accelerators. All effects which are described and derived with simplified analytic models, are tested in realistic lattices and are thus related to observable effects in linear accelerators. This approach involves the use of high-performance particle tracking codes, which are needed to simulate the behavior of the outermost particles in distributions of up to 100 million macro particles. In the end a set of design rules are established and their impact on the design of a typical high-intensity machine, the CERN SPL, is shown. The examples given in this document refer to two different design evolutions of the SPL study: the first conceptual design report (SPL I) and the second conceptual design report (SPL II). (orig.)

  12. Beam dynamics and commissioning of low and medium energy H- beam at Linac4

    CERN Document Server

    Satri, Masoomeh Yarmohammadi; Lamehi-Rachti , Mohammad

    The First step of the CERN Large Hadron Collider injectors upgrade (LIU) project is Linac4. It accelerates H- ions to 160 MeV in an 80 m long accelerator housed in a tunnel 12 m underground, presently under construction. It will replace the present 50 MeV proton Linac2 as injector of the proton accelerator complex to increase the LHC luminosity. It consists of a 45 keV RF volume source, a twosolenoid Low Energy Beam Transport (LEBT), a 352.2 MHz Radio Frequency Quadrupole (RFQ) accelerating the beam to 3 MeV, a Medium Energy Beam Transport (MEBT) line. The MEBT houses a fast chopper to selectively remove unwanted micro-bunches in the 352 MHz sequence and avoid losses at capture in the CERN PSB (1 MHz). After chopping, the beam acceleration continues by a 50 MeV Drift Tube Linac (DTL), a 100 MeV Cell-Coupled Drift Tube Linac and a Pi-Mode Structure bringing the beam to the final energy of 160 MeV. Linac4 has been commissioned with a temporary source up to 12 MeV. The beam commissioning stages of Linac4 in LEBT...

  13. HOM Couplers for CERN SPL Cavities

    CERN Document Server

    Papke, Kai; Van Rienen, U

    2013-01-01

    Higher-Order-Modes (HOMs) may affect beam stability and refrigeration requirements of superconducting proton linacs such as the SPL, which is studied at CERN as the driver for future neutrino facilities. In order to limit beam-induced HOM effects, CERN considers the use of HOM couplers on the cut-off tubes of the 5-cell superconducting cavities. These couplers consist of resonant antennas shaped as loops or probes, which are designed to couple to modes of a specific frequency range. In this paper the design process is presented and a comparison is made between various design options for the medium and high-beta SPL cavities, both operating at 704.4 MHz. The RF characteristics and thermal behaviour of the various designs are discussed.

  14. Hangout with CERN: Welcome to CERN (S01E01)

    CERN Multimedia

    Kahle, Kate

    2012-01-01

    In this first Hangout with CERN "Welcome to CERN" ATLAS physicist Steven Goldfarb, CERN theorist Alvaro De Rujula and Mick Storr from the CERN education group introduce CERN and answer some of the questions received via #askCERN on Twitter and Google+. Recorded live on 1st November 2012.

  15. Virgin Galactic explores CERN

    CERN Multimedia

    2016-01-01

    Virgin Galactic visited CERN with a group of future astronauts and Sir Richard Branson. During their visit the group was shown around various experiments, including the Globe, SM18, AMS and the CERN Control Centre.

  16. Doing business with CERN

    CERN Multimedia

    2015-01-01

    The Procurement Service, in collaboration with the Communications group’s Design team, has recently launched a new information campaign targeted at companies wishing to supply their products and services to CERN. This campaign comprises:   A brochure, available in hard and soft copy:  http://procurement.web.cern.ch/brochures/doing-business-with-cern.   A 6-minute video overview: https://procurement-dev.web.cern.ch/doing-business-with-cern. This campaign is intended for Member State firms with whom CERN is yet to do business. The key objectives are: To emphasise that CERN can be considered a major customer across a wide range of activities;   To present CERN’s procurement procedures in a dynamic and digestible way;   To highlight the information available on CERN’s procurement website: http://procurement.web.cern.ch. Furthermore, a new section called “Having a contract with CERN” is also now ava...

  17. CERN Shop Christmas Sale

    CERN Multimedia

    Visits & Exhibition Service/ETT-VE

    2001-01-01

    11-13.12.2001 Looking for Christmas present ideas? Come to the Reception Shop Special Stand in Meyrin, Main Building, ground floor, from Tuesday 11 to Thursday 13 December from 10.30 to 16.00. CERN Calendar 10.- CERN Sweat-shirts(M, L, XL) 30.- CERN T-shirt (M, L, XL) 20.- New CERN silk tie (2 colours) 35.- Fancy silk tie (blue, bordeau) 25.- Silk scarf (light blue, red, yellow) 35.- Swiss army knife with CERN logo 25.- CERN watch 25.- CERN baseball cap 15.- CERN briefcase 15.- Book 'Antimatter' (English) 35.- Book 'How the web was born' (English) 25.- The Search for Infinity (French, Italian, English, German) 40.-   If you miss this special occasion, the articles are also available at the Reception Shop in Building 33 from Monday to Saturday between 08.30 and 17.30 hrs.

  18. Beam Loss in Linacs

    CERN Document Server

    Plum, M A

    2016-01-01

    Beam loss is a critical issue in high-intensity accelerators, and much effort is expended during both the design and operation phases to minimize the loss and to keep it to manageable levels. As new accelerators become ever more powerful, beam loss becomes even more critical. Linacs for H- ion beams, such as the one at the Oak Ridge Spallation Neutron Source, have many more loss mechanisms compared to H+ (proton) linacs, such as the one being designed for the European Spallation Neutron Source. Interesting H- beam loss mechanisms include residual gas stripping, H+ capture and acceleration, field stripping, black-body radiation and the recently discovered intra-beam stripping mechanism. Beam halo formation, and ion source or RF turn on/off transients, are examples of beam loss mechanisms that are common for both H+ and H- accelerators. Machine protection systems play an important role in limiting the beam loss.

  19. The CERN Library

    CERN Multimedia

    Hester, Alec G

    1968-01-01

    Any advanced research centre needs a good Library. It can be regarded as a piece of equipment as vital as any machine. At the present time, the CERN Library is undergoing a number of modifications to adjust it to the changing scale of CERN's activities and to the ever increasing flood of information. This article, by A.G. Hester, former Editor of CERN COURIER who now works in the Scientific Information Service, describes the purposes, methods and future of the CERN Library.

  20. Greece at CERN

    CERN Multimedia

    CERN Press Office. Geneva

    1997-01-01

    Greece, one of CERN*'s founding Member States, inaugurated its first Industrial Exhibition at the Meyrin site on Tuesday, 14 October. After a meeting with CERN's Director General, Professor Christopher Llewellyn Smith, Professor Emmanuel Frangoulis, the General Secretary of the Greek Ministry of Industry, accompanied by Prof Emmanuel Floratos, Greek delegate to CERN council visited the DELPHI experiment on the LEP collider, guided by Andromachi Tsirou, a Greek physicist.

  1. France at CERN

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    Rolf Heuer, CERN Director General, visits the exhibition "La France au CERN". The exhibition France at CERN, organized by UBIFRANCE in collaboration with CERN's GS/SEM (Site Engineering and Management) service, took place from Monday 7 to Wednesday 9 June in the Main Building. The 36 French firms taking part came to present their products and technologies related to the Organization's activities. The next exhibition will be "Netherlands at CERN" in November.

  2. CERN Photowalk 2015

    CERN Multimedia

    2015-01-01

    CERN is organising a Photowalk on Friday 25 September 2015. At this event a few selected photographers will get the chance to come to CERN, the European Organization for Nuclear Research, for an exclusive behind-the-scenes tour of the laboratory. For more information: http://photowalk2015.web.cern.ch/

  3. In the CERN Library

    CERN Multimedia

    1963-01-01

    Seen in this picture is Noria Christophoridou, librarian of the Greek Atomic Energy Commission, who has been sent by her government to CERN for a year to widen her experience of library and documentation services. In the photograph she is providing information to Kurt Gottfried, a CERN visiting scientist from Harvard University, who is spending a year with CERN's Theory Division

  4. Injector linac of SPring-8

    International Nuclear Information System (INIS)

    The linac that is SPring-8 injector was completed and started operation from August 1. A beam was able to be transported to the final beam dumping at a tail end on August 8. From now on this linac carries out beam adjustment and be scheduled to do a beam injection to a synchrotron in October. The construction and fundamental performance of the linac are described. (author)

  5. Collide@CERN Geneva

    CERN Document Server

    CERN. Geneva; Kieffer, Robert; Blas Temino, Diego; Bertolucci, Sergio; Mr. Decelière, Rudy; Mr. Hänni, Vincent

    2014-01-01

    CERN, the Republic and Canton of Geneva, and the City of Geneva are delighted to invite you to “Collide@CERN Geneva Music”. Come to the public lecture about collisions between music and particle physics by the third winners of Collide@CERN Geneva, Vincent Hänni & Rudy Decelière, and their scientific inspiration partners, Diego Blas and Robert Kieffer. The event marks the beginning of their residency at CERN, and will be held at the CERN Globe of Science and Innovation on 16 October 2014 at 19.00. Doors will open at 18.30.

  6. CERN Cricket Club

    CERN Multimedia

    CERN Cricket Club

    2010-01-01

    CERN Cricket Club Match Reports The cricket season is well under way, despite the weather, and several matches have been played. The match reporters have, however, found it too difficult to limit their reports to ¼ of a page, hence the reports have not appeared in the bulletin. All reports can be found at http://cern.ch/Club-Cricket/reports/reports.html The list of forthcoming matches can be consulted at http://cern.ch/Club-Cricket/fixtures.html Further information about the CERN Cricket Club can be found at http://cern.ch/Club-Cricket/

  7. Britain at CERN

    CERN Multimedia

    CERN Press Office. Geneva

    1996-01-01

    On 8 October, H.E. Mr David Beattie, British Ambassador to Switzerland, Mr John R. Nichols, H.M. Consul-General in Geneva and, Prof. Christopher Llewellyn Smith, CERN*'s Director General, formally opened the industrial exhibition of thirty-three British hi-tech companies at CERN, which takes place from 8 to 11 October, 1996. The exhibition offers British companies the opportunity to display their products in fields that are of immediate importance to the scientists, engineers and technicians working at CERN, and also to scientists from non-Member States who take part in research projects at CERN.

  8. Linac4 Low Energy Beam Measurements with Negative Hydrogen

    CERN Document Server

    Scrivens, R; Crettiez, O; Dimov, V; Gerard, D; Granemann Souza, E; Guida, R; Hansen, J; Lallement, J B; Lettry, J; Lombardi, A; Midttun, O; Pasquino, C; Raich, U; Riffaud, B; Roncarolo, F; Valerio-Lizarraga, C A; Wallner, J; Yarmohammadi Satri, M; Zickler, T

    2014-01-01

    Linac4, a 160 MeV normal-conducting H- linear accelerator, is the first step in the upgrade of the beam intensity available from the LHC proton injectors at CERN. The Linac4 Low Energy Beam Transport (LEBT) line from the pulsed 2 MHz RF driven ion source, to the 352 MHz RFQ has been built and installed at a test stand, and has been used to transport and match to the RFQ a pulsed 14 mA H- beam at 45 keV. A temporary slit-and-grid emittance measurement system has been put in place to characterize the beam delivered to the RFQ. In this paper a description of the LEBT and its beam diagnostics is given, and the results of beam emittance measurements and beam transmission measurements through the RFQ are compared with the expectation from simulations.

  9. Commissioning of the new H- source for Linac4

    International Nuclear Information System (INIS)

    As part of the CERN accelerator complex upgrade, a new linear accelerator for H- (Linac4) will start its operation in 2014. The source for this linac will be a 2 MHz rf driven H- source which is a copy of the very successful source from DESY. In this paper the design and the first results of the commissioning are reported. The commissioning has progressed successfully, and no major obstacles have been identified which will prevent reaching the goal of 80 mA H- beam current, 45 keV beam energy, 0.4 ms pulse length, and 2 Hz repetition rate. The source is producing up until now a stable beam of 23 mA, 35 keV, and with a repetition rate of 0.83 Hz.

  10. CERN honours Georges Charpak

    CERN Multimedia

    2009-01-01

    CERN pays tribute to the work of Georges Charpak at a colloquium in honour of his 85th birthday. var flash_video_player=get_video_player_path(); insert_player_for_external('Video/Public/Movies/2009/CERN-MOVIE-2009-008/CERN-MOVIE-2009-008-0753-kbps-480x360-25-fps-audio-64-kbps-44-kHz-stereo', 'mms://mediastream.cern.ch/MediaArchive/Video/Public/Movies/2009/CERN-MOVIE-2009-008/CERN-MOVIE-2009-008-Multirate-200-to-753-kbps-480x360.wmv', 'false', 480, 360, 'https://mediastream.cern.ch/MediaArchive/Video/Public/Movies/2009/CERN-MOVIE-2009-008/CERN-MOVIE-2009-008-posterframe-480x360-at-10-percent.jpg', '1167500', true, 'Video/Public/Movies/2009/CERN-MOVIE-2009-008/CERN-MOVIE-2009-008-0600-kbps-maxH-360-25-fps-audio-128-kbps-48-kHz-stereo.mp4'); Watch the video conference of Georges Charpak.   On 9 March CERN’s Main Auditorium was the venue for a fascinating and moving celebration marking the 85th birthday of Georges Charpak, who was awarded the Nobel Prize for Physics in 1992 for his inven...

  11. CERN Holiday Gift Guide

    CERN Multimedia

    2013-01-01

    Do you have last-minute gifts to get? Stuck for ideas? The CERN Shop and the ATLAS and CMS secretariats have some wonderfully unique gifts and stocking-fillers for sale this year - perfect for the physics fanatics in your life. Let's take a look...   1. CERN Notebook, 10 CHF - 2. CERN Pop-up book, 30 CHF - 3. USB Stick 8GB, 25 CHF - 4. CERN Tumbler, 12 CHF 5. ATLAS 3D Viewer, 5 CHF - 6. ATLAS Puzzle, 15 CHF - 7. CMS Umbrella, 25 CHF   These gifts are all available at the CERN Shop, with the exception of the ATLAS 3D Viewer and the CMS umbrella, which are only available from the respective secretariats. Don’t forget! If you’re from CERN, you still have time to take advantage of a 10% off discount at the CERN shop. Offer ends 20 December.

  12. NPL superconducting Linac control system

    International Nuclear Information System (INIS)

    The control system for the NPL Linac is based on a Microvax II host computer connected in a star network with 9 satellite computers. These satellites use single board varsions of DEC's PDP 11 processor. The operator's console uses high performance graphics and touch screen technology to display the current linac status and as the means for interactively controlling the operation of the accelerator

  13. CERN Table Tennis Club

    CERN Multimedia

    CERN Table Tennis Club

    2014-01-01

    CERN Table Tennis Club Announcing CERN 60th Anniversary Table Tennis Tournament to take place at CERN, from July 1 to July 15, 2014   The CERN Table Tennis Club, reborn in 2008, is encouraging people at CERN to take more regular exercise. This is why the Club, thanks to the strong support of the CERN Staff Association, installed last season a first outdoor table on the terrace of restaurant # 1, and will install another one this season on the terrace of Restaurant # 2. Table tennis provides both physical exercise and friendly social interactions. The CERN Table Tennis club is happy to use the unique opportunity of the 60th CERN anniversary to promote table tennis at CERN, as it is a game that everybody can easily play, regardless of level. Table tennis is particularly well suited for CERN, as many great physicists play table tennis, as you might already know: “Heisenberg could not even bear to lose a game of table tennis”; “Otto Frisch played a lot of table tennis;...

  14. The SPL Front End: A 3 MeV$H^{-}$ Test Stand at CERN

    CERN Document Server

    Rossi, C; Caspers, Friedhelm; Garoby, R; Genest, J; Hanke, K; Hori, Masaki; Küchler, D; Lombardi, A M; Magistris, M; Millich, Antonio; Paoluzzi, M; Sargsyan, E; Silari, M; Steiner, T; Vretenar, M; Beauvais, Pierre Yves; Ausset, P; LINAC'04

    2004-01-01

    In the frame of the SPL (Superconducting Proton Linac) study at CERN, a new 160 MeV proton injector for the CERN PS Booster is presently under development. This linear accelerator (Linac4) would not only be a first step towards a future, multi-MW superconducting linac, but would also improve in the medium term both the beam availability and beam quality for CERN’s proton users. Within the framework of the Linac4 study and with the support of the EU funded Joint Research Activity HIPPI (High Intensity Pulsed Proton Injectors), a 3 MeV test stand is under construction at CERN. This test stand will explore some of the most critical issues of the linac, such as the beam dynamics at low energy, with special emphasis on the chopper line that has been designed to generate the required time structure of the beam, to clean the beam halo, and to match it to the subsequent RF structures. In this context, a new Beam Shape and Halo Monitor is under construction. The beam acceleration will be performed by an RFQ that is ...

  15. A great start for the whole CERN accelerator chain

    CERN Multimedia

    2016-01-01

    With physics data-taking under way this week at the LHC, I’d like to take a look at what’s been happening at the rest of the CERN accelerator chain.   The LHC tends to dominate the news from CERN for all kinds of reasons, beech martens included, but we should not forget that there is a unique chain of accelerators upstream of the LHC, tended to and operated by an incredible group of people. If our whole accelerator chain does not work perfectly, nor can the LHC, and in addition to forming the LHC’s injector chain, our upstream accelerators support their own experiments, bringing great diversity to the CERN research programme. The chain begins with the proton source and Linac2, which have been faithfully delivering beams since 1978. This year, Linac2 accelerated its first beams on 29 February. Beams were then passed on to the PS Booster and the veteran PS, the linchpin of the CERN accelerator complex and in operation since 1959. The final link in the chain before the ...

  16. LINAC control automation system

    International Nuclear Information System (INIS)

    A 7 MeV Electron Beam Linear Accelerator (LINAC) being used for pulse radiolysis experiments at RC and CDD, B.A.R.C. has been automated with a PLC based control panel designed and developed by Computer Division, B.A.R.C.. The control panel after power on switches ON various units in a pre-defined sequence and intervals on a single turn of START key from OFF to ON position. The control panel also generates various ramp signals in a pre-defined sequence and rate and steady values and feeds to the LINAC bringing it to the ready for experiment condition. Similarly on a single turn of STOP key from OFF to ON position, the panel ramps down the various signals in pre-defined manners and makes OFF the various units in predefined sequence and timing providing safety to the machine. The steady values for various signals are on line settable as and when required so. This automation system relieves the operator from fatigue of time consuming manual ramping up or down of various signals and running around in four rooms for switching ON or OFF the various units enhancing efficiency and safety. This also facilitates the user scientist to do start up and shutdown operation in the absence of skilled operators and thus adds flexibility for working up to extended timing. This unit has been working satisfactorily since August 2002. For extraordinary condition automation to manual or vice versa change over has been provided. (author)

  17. Optimization of SRF Linacs

    Energy Technology Data Exchange (ETDEWEB)

    Powers, Tom [JLAB

    2013-09-01

    This work describes preliminary results of a new software tool that allows one to vary parameters and understand the effects on the optimized costs of construction plus 10 year operations of an SRF linac, the associated cryogenic facility, and controls, where operations includes the cost of the electrical utilities but not the labor or other costs. It derives from collaborative work done with staff from Accelerator Science and Technology Centre, Daresbury, UK several years ago while they were in the process of developing a conceptual design for the New Light Source project.[1] The initial goal was to convert a spread sheet format to a graphical interface to allow the ability to sweep different parameter sets. The tools also allow one to compare the cost of the different facets of the machine design and operations so as to better understand the tradeoffs. The work was first published in an ICFA Beam Dynamics News Letter.[2] More recent additions to the software include the ability to save and restore input parameters as well as to adjust the Qo versus E parameters in order to explore the potential costs savings associated with doing so. Additionally, program changes now allow one to model the costs associated with a linac that makes use of energy recovery mode of operation.

  18. CERN and the environment

    CERN Multimedia

    Corinne Pralavorio

    2016-01-01

    New webpages answer common questions about CERN and the environment.   One of the new public webpages dedicated to CERN and the environment. Do your neighbours ever ask you about CERN’s environmental impact? And about radiation in particular? If so, the answers to those questions can now be found online on a new set of public webpages dedicated to CERN and the environment. These pages, put together by the Occupational Health, Safety and Environmental Protection (HSE) unit and the groups responsible for CERN's site maintenance, contain a wealth of information on topics linked to the environment, such as biodiversity at CERN, waste management, ionising radiation, and water and electricity consumption. “CERN forms part of the local landscape, with its numerous sites and scientific activities. It’s understandable that people living nearby have questions about the impact of these activities and it’s important that we respond with complete transp...

  19. German visits to CERN

    CERN Multimedia

    2007-01-01

    State secretary to Germany's Federal Ministry of Education and Research, Frieder Meyer-Krahmer, with CERN's Director-General Robert Aymar.On 21 February, Professor Frieder Meyer-Krahmer, State Secretary to Germany's Federal Ministry of Education and Research, came to CERN. He visited the ALICE and ATLAS experiments and the computing centre before meeting the CERN's Director-General, some German physicists and members of the top management. The Minister of Science, Research and the Arts of the Baden-Württemberg regional government, Peter Frankenberg, and CERN's Director-General, Robert Aymar, signing an agreement on education. In the background: Sigurd Lettow, CERN's Director of Finance and Human Resources, and Karl-Heinz Meisel, Rector of the Fachhochschule Karlsruhe. The Minister of Science, Research and the Arts of the Baden-Württemberg regional government, Prof. Peter Frankenberg, visited CERN on 23 February. He was accompanied by the Rector of the Fachhochschule Karlsruhe, Prof. Karl-Heinz Meisel, and b...

  20. Germany at CERN

    CERN Multimedia

    2005-01-01

    From left to right: Maximilian Metzger, CERN's Secretary-General, Hermann Schunck, Director at the German Federal Ministry of Education and Research, and Robert Aymar, CERN's Director-General, talking to Wolfgang Holler from Butting, one of the companies at the "Germany at CERN" exhibition. Far right : Susanne-Corinna Langer-Greipl from BMBF, delegate to the CERN Finance Committee. For three days, CERN's Main Building was transformed into a showcase for German industry. Twenty-nine companies from sectors related to particle physics (electrical engineering, vacuum and low temperature technology, radiation protection, etc.) were here for the ninth "Germany at CERN" exhibition, organised by the German Federal Ministry of Education and Research (BMBF), which gave them the opportunity to meet scientists and administrators from the Laboratory. On 1 March the exhibition was visited by a German delegation headed by Dr Hermann Schunck, Director at BMBF.

  1. Young Artists@ CERN

    CERN Document Server

    2004-01-01

    In view of 50th anniversary of CERN, about 20 young artists will be visiting CERN from 26 to 31 January to learn about the laboratory's research and the mysterious world of particle physics. The impressions they take home will be the main inspiration for the artwork they will then produce for an exhibition to be inaugurated in October 2004 as part of CERN's 50th anniversary celebration. We are looking for scientists who are interested in the Art-Science synergy and who can volunteer to discuss their work at CERN to these young artists during this week (25-31/01). Please contact renilde.vanden.broeck@cern.ch if you are interested. The project is called Young Artists@ CERN and for more information look at this website: http://www.hep.ucl.ac.uk/~andy/CERNart/

  2. CERN Cricket club

    CERN Multimedia

    CERN Cricket club

    2015-01-01

    The CERN Cricket Club 2015 season begins soon, the first net practice is scheduled (weather permitting) for Thursday April 16th, at 18:00! The club is always looking for new players and newcomers will be made very welcome. Anyone who is interested in joining the club should sign up on our web site: http://cern.ch/Club-Cricket/ or turn up for net practice, which takes place each Thursday evening from April 16th (apart from CERN official holidays) until the end of September (starting at 18:00 to around 19:30) at the CERN Prévessin site: http://club-cricket.web.cern.ch/Club-Cricket/CERN-Ground.html The first match will be at home on Sunday, April 19th against Rhone CC from Lyon.

  3. CERN Relay Race

    CERN Multimedia

    CERN Running Club

    2010-01-01

    The CERN relay race will take place around the Meyrin site on Thursday 20 May, starting at 12.15. If possible, please avoid driving on the site during this 20-minute period. If you do meet runners while driving your car, please STOP until they have all passed. Thank you for your cooperation. Details on the route, and how to register your team for the relay race, can be found at: https://espace.cern.ch/Running-Club/CERN-Relay

  4. The CERN PC farm

    CERN Multimedia

    Serge Bellegarde

    2005-01-01

    Housed in the CERN Computer Centre, these banks of computers process and store data produced on the CERN systems. When the LHC starts operation in 2008, it will produce enough data every year to fill a stack of CDs 20 km tall. To handle this huge amount of data, CERN has also developed the Grid, allowing the processing power to be shared between computer centres around the world.

  5. Sharing resources@CERN

    CERN Multimedia

    Maximilien Brice

    2002-01-01

    The library is launching a 'sharing resources@CERN' campaign, aiming to increase the library's utility by including the thousands of books bought by individual groups at CERN. This will improve sharing of information among CERN staff and users. Photo 01: L. to r. Eduardo Aldaz, from the PS division, Corrado Pettenati, Head Librarian, and Isabel Bejar, from the ST division, read their divisional copies of the same book.

  6. Radiation protection at CERN

    OpenAIRE

    Forkel-Wirth, Doris; Roesler, Stefan; Silari, Marco; Streit-Bianchi, Marilena; Theis, Christian; Vincke, Heinz; Vincke, Helmut

    2013-01-01

    This paper gives a brief overview of the general principles of radiation protection legislation; explains radiological quantities and units, including some basic facts about radioactivity and the biological effects of radiation; and gives an overview of the classification of radiological areas at CERN, radiation fields at high-energy accelerators, and the radiation monitoring system used at CERN. A short section addresses the ALARA approach used at CERN.

  7. CERN - better than science fiction!

    CERN Multimedia

    2007-01-01

    From left to right: Allan Cameron (Production Designer), Sam Breckham (Location Manager), James Gillies (Head of Communication at CERN), Jacques Fichet (from the CERN audiovisual service), Rolf Landua (former spokesman of the ATHENA antihydrogen experiment at CERN and Head of CERN's Education Group), Ron Howard, and Renilde Vanden Broeck (CERN press officer).

  8. Integrity at CERN

    CERN Document Server

    Department, HR

    2015-01-01

    In the fulfillment of its mission, CERN relies upon the trust and material support of its Member States and partners, and is committed to exercising exemplary stewardship of the resources with which it is entrusted. Accordingly, CERN expects the highest level of integrity from all its contributors (whether members of the personnel, consultants, contractors working on site, or persons engaged in any other capacity at or on behalf of CERN). Integrity is a core value of CERN, defined in the Code of Conduct as “behaving ethically, with intellectual honesty and being accountable for one’s own actions”.

  9. Britain at CERN

    CERN Multimedia

    2000-01-01

    H. E. Mr Christopher Hulse, Ambassador of United Kingdom in Switzerland, CERN Director General Luciano Maiani, Sir David Wright, Chief Executive of British Trade International and Roger Cashmore, CERN Director of research visit the Britain at CERN exhibition. From 14 to 17 November 30 British companies exhibited leading edge technologies at CERN. This is Britain's 18th exhibition at CERN since 1968. Out of the 30 companies, which attended the Britain at CERN exhibition in 1998, 25 have received an order or a contract relating to CERN during the last two years. The exhibition was inaugurated on Tuesday by Sir David Wright, Chief Executive of British Trade International. He was accompanied by H.E. Mr Christopher Hulse CMG, OBE, Her Majesty's Ambassador to Switzerland, and Mr. David Roberts, Deputy Head of Mission and Director of Trade Promotion at the British Embassy in Bern. CERN Director-General, Professor Luciano Maiani, underlined the major contribution of British physicists to CERN, pointing out the fact ...

  10. Dear CERN Computing Community,

    CERN Multimedia

    2003-01-01

    This is to remind you that LXPLUS6 cluster will be switched off on: Friday May 30th 2003 12:00 CET Please start using lxplus.cern.ch now to avoid unnecessary problems at the last minute. Note especially, that telnet and ftp to lxplus.cern.ch are not provided and will not work, instead secure protocols such as ssh and sftp should be used. Also LINUX6 resources in LXBATCH will no longer be available from the same date - Friday May 30th 2003 8:00 CET. See: http://cern.ch/plus/issues.html for other know issues. Vladimir Bahyl CERN/IT/FIO/FS

  11. Dear CERN Computing Community,

    CERN Multimedia

    2003-01-01

    This is to remind you that LXPLUS6 cluster will be switched off on: Friday May 30th 2003 12:00 CETPlease start using lxplus.cern.ch now to avoid unnecessary problems at the last minute. Note especially, that telnet and ftp to lxplus.cern.ch are not provided and will not work, instead secure protocols such as ssh and sftp should be used. Also LINUX6 resources in LXBATCH will no longer be available from the same date - Friday May 30th 2003 8:00 CET. See: http://cern.ch/plus/issues.html for other know issues. Vladimir Bahyl CERN/IT/FIO/FS

  12. Photowalk 2015: CERN as seen by a photographer

    CERN Multimedia

    Julie Haffner

    2015-01-01

    On Friday, 25 September, CERN opened its doors to nineteen photographers from all over the world for the CERN Photowalk 2015: behind the scenes at the Laboratory.   The photo competition was organised as part of an international photo competition, the Global Physics Photowalk, in which seven other physics laboratories also participated. Professional and amateur photographers alike had the chance to visit and capture for posterity a number of unique CERN sites: Linac4, the main workshop and the ISOLDE facility. They were also able to get a feel for life at CERN by exploring the Meyrin campus. A jury will select the best three photos taken at CERN before the end of October. These photos will be exhibited in 2016 and will represent CERN in the international competition, in which each of the other labs will also enter three snapshots. In November, an international jury and a public vote will pick the winning photos, which will be exhibited in 2016 in Asia, Europe and North America and will be featured ...

  13. Radiation protection studies for a high-power 160 MeV proton linac

    CERN Document Server

    Mauro, Egidio

    2009-01-01

    CERN is presently designing a new chain of accelerators to replace the present Proton Synchrotron (PS) complex: a 160 MeV room-temperature H− linac (Linac4) to replace the present 50 MeV proton linac injector, a 3.5 GeV Superconducting Proton Linac (SPL) to replace the 1.4 GeV PS Booster (PSB) and a 50 GeV synchrotron (named PS2) to replace the 26 GeV PS. Linac4 has been funded and the civil engineering work started in October 2008, whilst the SPL is in an advanced stage of design. Beyond injecting into the future 50 GeV PS, the ultimate goal of the SPL is to generate a 4 MW beam for the production of intense neutrino beams. The radiation protection design is driven by the latter requirement. This work summarizes the radiation protection studies conducted for Linac4. FLUKA Monte Carlo simulations, complemented by analytical estimates, were performed to evaluate the propagation of neutrons through the waveguide, ventilation and cable ducts placed along the accelerator, to estimate the radiological impact of ...

  14. Romanian Visit to CERN

    CERN Multimedia

    2001-01-01

    Romanian Minister for Foreign Affairs, Mr Mircea Dan Geoana, visited CERN on 30 March to discuss collaboration between his country and the Laboratory. Above, Mr Dan Geoana signs the visitors' book in the presence of CERN Director General Luciano Maiani and Mrs Anda Flip, Ambassador and permanent representative of Romania at the United Nations.

  15. CERN's Early History Revisited

    CERN Multimedia

    Schopper, Herwig Franz; Krige, Gerhard John

    2005-01-01

    As a member of the group of historians charged to write the history of the founding of CERN, John Krige particularly underlines the important role I.I. Rabi played. The first author, former Director General of CERN add a few comments. S.A. Khan gives precisions about the role played by E. Amaldi and P. Auger; then J. Krige replies

  16. ESO: The CERN Years

    CERN Multimedia

    Schaeffer, A

    2012-01-01

    In 1970, CERN and ESO signed a collaboration agreement for the construction of the Observatory’s first telescope. That same year, ESO’s Telescope Division and Sky Atlas laboratory settled on the CERN site in Meyrin. Let’s turn back to the beginnings of this lasting and fruitful alliance.

  17. Punctualizaciones del CERN

    CERN Multimedia

    2002-01-01

    "Viene de la pagina anterior. Puntualizaciones del CERN. La valoracion que me merece la aprobacion en el Consejo de Ministros el 24 de mayo de un acuerdo de colaboracion entre el MCYT y el CERN para el proyecto de neutrinos al Gran Sasso es positiva" (1 page).

  18. Integration of CERN staff

    CERN Multimedia

    1965-01-01

    An example of the integration of CERN staff in the neighbouring communes is provided by the hamlet of Bugnon at St-Genis-Pouilly (Ain), FRance. The CERN installation on the Swiss site are visible on the left in the background. Behind them the Saleve mountain in Haute-Savoie.

  19. Child Care at CERN

    CERN Document Server

    CERN, Child Care Initiative

    2008-01-01

    This is a document summarizing a survey of child care needs of CERN staff and users which was performed in February 2008 by the CERN Child Care Initiative. The document presents the analysis of this data. Conclusions on the minimal facilities size are derived and possible funding source at the European Union are discussed.

  20. The CERN Accelerator School

    CERN Multimedia

    2016-01-01

    Introduction to accelerator physics This course will take place in Budapest, Hungary, from 2 to 14 October 2016. It is now open for registration and further information can be found at: http://cas.web.cern.ch/cas/Hungary2016/Hungary-advert.html and http://indico.cern.ch/event/532397/.

  1. CERN and the LHC

    CERN Multimedia

    Cramer, J G

    1992-01-01

    CERN, a high-energy physics laboratory in Europe, is planning to build a more powerful particle accelerator, the Large Hadronic Collider. The US spreads its accelerators around the country while most of Europe's research is conducted at and around CERN.

  2. CERN openlab Open Day

    CERN Multimedia

    Purcell, Andrew Robert

    2015-01-01

    The CERN openlab Open Day took place on 10 June, 2015. This was the first in a series of annual events at which research and industrial teams from CERN openlab can present their projects, share achievements, and collect feedback from their user communities.

  3. UK Mission to CERN

    CERN Multimedia

    2004-01-01

    At the end of June, nine experts from UK industry visited CERN to study techniques for developing distributed computing systems and to look at some specific applications. In a packed three-day programme, almost 40 CERN experts presented a comprehensive survey of achievements.

  4. Drift tubes of Linac 2

    CERN Multimedia

    Photographic Service

    1977-01-01

    Being redied for installation, those at the right are for tank 1, those on the left for tank 2. Contrary to Linac 1, which had drift-tubes supported on stems, here the tubes are suspended, for better mechanical stability.

  5. France at CERN

    CERN Multimedia

    2001-01-01

    From 19 to 22 June, for the 8th edition of France at CERN, 31 French companies presented their latest technology to the Laboratory. Demonstrating the latest in French technology during France at CERN. The France at CERN exhibition was inaugurated by Mr. Bernard Frois, Director of the Department Energy, Transport, Environment and Natural Resources at the Technology Directorate of the Ministry of Research. 'France is happy to be a Member of CERN, which is a successful example of the construction of scientific Europe,' he declared during the inauguration, 'this exhibition is an excellent opportunity to put fundamental research and advanced technology in contact.' Mr. Philippe Petit, French Ambassador to Switzerland, and Mr. Alexandre Defay, technical adviser of the Minister of Research, were also present to represent France and its industry. Representing CERN at the 19 June opening of the exhibition was Claude Detraz, who said, 'I hope that this exhibition will make it possible to weave stronger links between ...

  6. CERN in the park

    CERN Multimedia

    2002-01-01

    CERN will be the centre of debate at a 'Café scientifique' on Monday 29 April. The aim of the Cafés scientifiques, which are organised by the association of Bancs Publics, is to kindle discussion between ordinary people and specialists in a scientific field. This Monday, Maurice Bourquin, President of the CERN Council, Hans Hoffmann, Director of Technology Transfer and Scientific Computing at CERN, Gilbert Guignard, a physicist at CERN, and Ruhal Floris, who teaches mathematical didactics at the University of Geneva, will explain the usefulness and contributions to science of the world's biggest laboratory for particle physics. What is CERN for? Monday 29 April at 18.30 Musée d'histoire des sciences, Geneva (in the park Perle du Lac) Entry free Wine and buffet after the discussion

  7. Romanian President Visits CERN

    CERN Multimedia

    2001-01-01

    Director General Luciano Maiani watches as Romanian President Ion Iliescu signs the CERN guest book. On Friday the 12th of October, Romanian President Ion Iliescu arrived at CERN and was warmly greeted by Director General Luciano Maiani at the steps of building 500. After initial greetings and a general presentation of the laboratory, President Iliescu and his entourage embarked on a whistle stop tour of the CERN facilities. They visited the CMS magnet assembly hall and civil engineering work where presentations were made by CMS spokesperson Michel Della Negra and the ATLAS Tile Calorimeter where the president was introduced to Romanian physicists working here at CERN. Michel Della Negra explains some of the general principles behind CMS to President Iliescu during his visit last week. The Romanian teams working on CERN projects make very visible contributions, for example to the construction of the ATLAS experiment and to the preparation of its eventual scientific exploitation. 'Those of us on the ATLAS ...

  8. CERN Mobility Survey

    CERN Multimedia

    GS Department

    2011-01-01

    The Institute of Shipping and Transport of the University of the Aegean and the National Technical University of Athens are partners with CERN in a study of mobility patterns between and within the CERN sites and to that effect have realized a mobility survey dedicated to the CERN community.         The study aims to understand: How you presently get around the CERN sites; What problems you encounter regarding mobility; What your needs are; What improvements you’d like to see; What measures you would like to see implemented most. The replies we receive will enable us to define a general policy promoting the diversity of mobility at CERN and to establish and quantify the strategic actions to be implemented for both the short and medium term. The objectives of the transport mobility plans are to: Facilitate mobility within and between the CERN sites by identifying adequate solutions in response to individual ...

  9. Lectures for CERN pensioners

    CERN Multimedia

    GS Department

    2009-01-01

    The CERN Medical Service and the Pensioners Association are pleased to invite CERN pensioners to a series of lectures given by professors and specialists from the Teaching Hospitals and the Faculty of Medicine of the University of Geneva on the following topic: PROMOTION OF OPTIMUM BRAIN AGEING The lectures will take place in the Main CERN Auditorium (Building 60) from 2.30 p.m. to 4.30 p.m. on the following dates: Thursday 15 January 2009: Diagnosing and treating Alzheimer’s disease Pr Gabriel GOLD Wednesday 25 February 2009: What is the brain reserve? Speaker’s name to be announced at a later date. The lectures will be given in French, with transparencies in English, and will be followed by a wide-ranging debate with the participants. CERN Medical Service - Pensioners Association - CERN-ESO (GAC-EPA)

  10. SLAC Linac Preparations for FACET

    Energy Technology Data Exchange (ETDEWEB)

    Erickson, R.; Bentson, L.; Kharakh, D.; Owens, A.; Schuh, P.; Seeman, J.; Sheppard, J.C.; Stanek, M.; Wittmer, W.; Yocky, G.; Wienands, U.; /SLAC

    2011-02-07

    The SLAC 3km linear electron accelerator has been cut at the two-thirds point to provide beams to two independent programs. The last third provides the electron beam for the Linac Coherent Light Source (LCLS), leaving the first two-thirds available for FACET, the new experimental facility for accelerator science and test beams. In this paper, we describe this separation and projects to prepare the linac for the FACET experimental program.

  11. NPL superconducting linac control system

    International Nuclear Information System (INIS)

    The control system for the Nuclear Physics Lab (NPL) linac is based on a Microvax II host computer connected in a star network with nine satellite computers. These satellites use single-board versions of DEC's PDP 11 processor. The operator's console uses high-performance graphics and touch-screen technology to display the current linac status and as the means for interactively controlling the operation of the accelerator

  12. Inner structure of Linac 2

    CERN Multimedia

    1977-01-01

    With the advent of the 800 MeV Booster in 1972, the original injector of the PS, a 50 MeV Alvarez-type proton linac, had reached its limits, in terms of intensity and stability. In 1973 one therefore decided to build a new linac (Linac 2), also with a drift-tube Alvarez structure and an energy of 50 MeV. It had a new Cockcroft-Walton preinjector with 750 keV, instead of the previous one with 500 keV. Linac 2 was put into service in 1980. The old Linac 1 was then used for the study of, and later operation with, various types of ions. This picture shows the inner structure of Linac 2, with drift-tubes hanging on stems under a rigid support structure, soon to be mounted inside tank 1 (750 keV to 10 MeV, the lowest-energy one of 3). Frank Malthouse is standing in the background.

  13. Space charge compensation in the Linac4 low energy beam transport line with negative hydrogen ions

    Energy Technology Data Exchange (ETDEWEB)

    Valerio-Lizarraga, Cristhian A., E-mail: cristhian.alfonso.valerio.lizarraga@cern.ch [CERN, Geneva (Switzerland); Departamento de Investigación en Física, Universidad de Sonora, Hermosillo (Mexico); Lallement, Jean-Baptiste; Lettry, Jacques; Scrivens, Richard [CERN, Geneva (Switzerland); Leon-Monzon, Ildefonso [Facultad de Ciencias Fisico-Matematicas, Universidad Autónoma de Sinaloa, Culiacan (Mexico); Midttun, Øystein [CERN, Geneva (Switzerland); University of Oslo, Oslo (Norway)

    2014-02-15

    The space charge effect of low energy, unbunched ion beams can be compensated by the trapping of ions or electrons into the beam potential. This has been studied for the 45 keV negative hydrogen ion beam in the CERN Linac4 Low Energy Beam Transport using the package IBSimu [T. Kalvas et al., Rev. Sci. Instrum. 81, 02B703 (2010)], which allows the space charge calculation of the particle trajectories. The results of the beam simulations will be compared to emittance measurements of an H{sup −} beam at the CERN Linac4 3 MeV test stand, where the injection of hydrogen gas directly into the beam transport region has been used to modify the space charge compensation degree.

  14. Effect of H- stripped electrons on the LINAC4 profile measurements

    CERN Document Server

    Chevallay, E; Duraffourg, M; Focker, GJ; Hessler, C; Raich, U; Roncarolo, F; Vuitton, C; Zocca, F

    2013-01-01

    At CERN's LINAC4 it is foreseen to measure transverse beam profiles by means of Secondary Emission wire grids (normally referred to as SEM monitors or SEM grids) and Beam Wire Scanners (BWS). Following observations at the SNS linac BWS, that showed cross-talk between wire signals attributed to scattering of H- stripped electrons, it was decided to investigate this effect for the LINAC4 case. The interaction of electron beams with Carbon and Tungsten wires was studied through Monte Carlo simulations (FLUKA code), analytical calculations, particle tracking simulations in EM fields (CST Particle Studio) and a laboratory experiment based on a 70 keV electron beam, well reproducing the case of 128 MeV H- ions.

  15. Induction Linac Pulsers

    International Nuclear Information System (INIS)

    The pulsers used in most of the induction linacs evolved from the very large body of work that was done in the U.S. and Great Britain during the development of the pulsed magnetron for radar. The radar modulators started at ∼100 kW and reached >10 MW by 1945. A typical pulse length was 1 μs at a repetition rate of 1,000 pps. A very comprehensive account of the modulator development is Pulse Generators by Lebacqz and Glasoe, one of the Radiation Laboratory Series. There are many permutations of possible modulators, two of the choices being tube type and line type. In earlier notes I wrote that technically the vacuum tube pulser met all of our induction linac needs, in the sense that a number of tubes, in series and parallel if required, could produce our pulses, regulate their voltage, be useable in feed-forward correctors, and provide a low source impedance. At a lower speed, an FET array is similar, and we have obtained and tested a large array capable of >10 MW switching. A modulator with an electronically controlled output only needs a capacitor for energy storage and in a switched mode can transfer the energy from the capacitor to the load at high efficiency. Driving a full size Astron induction core and a simulated resistive 'beam load' we achieved >50% efficiency. These electronically controlled output pulses can produce the pulses we desire but are not used because of their high cost. The second choice, the line type pulser, visually comprises a closing switch and a distributed or a lumped element transmission line. The typical switch cannot open or stop conducting after the desired pulse has been produced, and consequently all of the initially stored energy is dissipated. This approximately halves the efficiency, and the original cost estimating program LIACEP used this factor of two, even though our circuits are usually worse, and even though our inveterate optimists often omit it. The 'missing' energy is that which is reflected back into the line from

  16. CERN: Digitally open, too

    CERN Multimedia

    Computer Security Team

    2013-01-01

    The Open Days are here!! From tomorrow onwards, we will be welcoming thousands of people to CERN. No barriers, no boundaries!   For decades, we have welcomed researchers and visitors from around the world to work at CERN, discuss physics research and attend our training sessions, lectures and conferences. This is how fundamental research should be conducted!!! But have you ever noticed how you are welcome at CERN in the digital world, too? Once you are affiliated and are registered with CERN, you receive a CERN computing account and e-mail address.  You can register your laptops, PCs and smartphones to use our (wireless) network, you can easily create your personal webpage, and profit from a vast disk space for file storage (AFS and DFS). CERN is indeed an Open Campus and not only during the Open Days. CERN is an Open Campus in the digital world. This digital Open Campus culture is exactly the reason why “computer security” has been dele...

  17. CERN in 2030

    CERN Multimedia

    Laëtitia Pedroso

    2011-01-01

    A competition will soon be launched to select the architect, urban planner or landscape designer to undertake the first phase of redevelopment of the parking area by the flagpoles, between Entrances A and B. This will be the first stage in a wider development project aimed at sprucing up the CERN site and enhancing its image. Work to create a pleasant and harmonious area at the CERN entrance will start in 2013 while preparatory work for other developments inside the CERN site has already begun…   CERN as it is today.  By 2030, CERN will be a greener place, much like a university campus. The arrival of the tramway on 30 April will be an opportunity to forge ahead with the urban plan aimed at rejuvenating the CERN site and redefining how it is organised. "Nearly sixty years after CERN's first buildings went up, this plan will help transform the site and give it a welcoming, friendly face, a bit like a university campus," explains Thierry Chanard, urban plannin...

  18. The 1956 CERN Symposium

    CERN Document Server

    Jarlskog, Cecilia

    2014-01-01

    CERN, currently the largest organization in the world for particle physics, was founded in 1954. Originally located in Meyrin, at the outskirts of the city of Geneva in Switzerland, it has with time extended into neighboring France. The Theoretical Study Division of CERN, however, was created already in 1952, i.e., before the official inauguration of CERN. It was situated in Copenhagen. Christian Møller [1] was appointed (part-time) as the Director and there were two full time senior staff members, Gunnar Källén and Ben R. Mottelson. While constructing buildings and accelerators were in progress, an international conference was organized by CERN in the city of Geneva. This “CERN Symposium on High Energy Accelerators and Pion Physics”, 11–23 June 1956, attracted about 250 participants from outside CERN, among them at least 18 Nobel Laureates or future Laureates. Unfortunately, the participants from CERN are not listed in the Proceedings [2]. The conference focused on measuring devices such as bubbl...

  19. CERN honours its guides

    CERN Multimedia

    2004-01-01

    At the end of January, CERN's guides were rewarded for their devotion to the Laboratory. They have a passion for their work, know CERN inside-out and for 40 years have shown people of all ages and nationalities, from all walks of life, around the Laboratory. Who are they? Why, the CERN guides, of course. On 27 January, ten of CERN's 180 guides received special honours for their impressive number of guided tours in 2003. Presenting the awards in the Microcosm hall, CERN's Director-General Robert Aymar congratulated the winners on the key role they play with respect to the general public. "CERN would be nothing without you who show them its activities," he stressed. CERN's Director-General Robert Aymar congratulates Alberto Ribon for his tally of over 40 visits in the course of 2003.One of the prizes was the book «The Particle Odyssey». Here the book's co-author Christine Sutton dedicates it for Sijin Qian. Tzanko Spassoff (PH) and retired staff members Klaus Batzner and Antonio Francano wo...

  20. La Hollande au CERN

    CERN Document Server

    CERN Press Office. Geneva

    1995-01-01

    On 17 October the third industrial exhibition, "Holland at CERN" was officially opened by Dr R.J. van Duinen, President of the Dutch Organisation for Scientific Research (NWO). In his opening speech he encouraged scientific organisations such as CERN to take full advantage of industry's ability to design and invent new processes and equipment stressing that the purpose of the "Holland at CERN" exhibition was not simply to sell equipment, but to establish an efficient cross-fertilisation between fundamental science and industry.

  1. Linac transport and acceleration

    International Nuclear Information System (INIS)

    The acceleration of intense bunches maintaining high brightness is limited both by single-particle effects, e.g., misalignments, injection errors, and rf-steering, and collective phenomena, where the effects of the longitudinal and transverse wakefield on particles within a single bunch are the most severe. The working group has considered both problems and potentials of linac acceleration from ∼50 MeV to 1 GeV for free electron laser (FEL) applications, as well as from a few Gev to 1 TeV for linear colliders. The outlook for free electron lasers is bright: no fundamental problems seem to arise in the acceleration of peak currents in excess of 100 A with small emittance and low momentum spread. The situation of linear colliders is more complex and more difficult. Two examples, one operating at 11.4 GHz, the other at 30 GHz, are used to illustrate some of the difficulties and the exceedingly tight tolerances required. Both examples are based on round beams, and thus neither benefit from the advantages of flat beams nor address the increased care required in transporting beams of very small emittance in one plane. The working group acknowledges, but did not explore, promising concepts for colliders based on RF superconductivity

  2. CERN Developments for 704 MHz Superconducting Cavities

    CERN Document Server

    Capatina, O; Aviles Santillana, I; Arnau Izquierdo, G; Bonomi, R; Calatroni, S; Chambrillon, J; Gerigk, F; Garoby, R; Guinchard, M; Junginger, T; Malabaila, M; Marques Antunes Ferreira, L; Mikulas, S; Parma, V; Pillon, F; Renaglia, T; Schirm, K; Tardy, T; Therasse, M; Vacca, A; Valverde Alonso, N; Vande Craen, A

    2013-01-01

    The Superconducting Proton Linac (SPL) is an R&D effort coordinated by CERN in partnership with other international laboratories. It is aiming at developing key technologies for the construction of a multi-megawatt proton linac based on state-of-the-art RF superconducting technology, which would serve as a driver in new physics facilities for neutrinos and/or Radioactive Ion Beam (RIB). Amongst the main objectives of this R&D effort, is the development of 704 MHz bulk niobium beta=1 elliptical cavities, operating at 2 K with a maximum accelerating gradient of 25 MV/m, and the testing of a string of cavities integrated in a machine-type cryomodule. The cavity together with its helium tank had to be carefully designed in coherence with the innovative design of the cryomodule. New fabrication methods have also been explored. Five such niobium cavities and two copper cavities are in fabrication. The key design aspects are discussed, the results of the alternative fabrication methods presented and the stat...

  3. 29 March 2012 - Austrian Niederösterreich Governor E. Pröll with Klubobmann and Chairman of EBG MedAustron GmbH Council K. Schneeberger, Director General for Cultural Policy Amabssador M.Eichtinger and Permanent Representative of Austria to the UNO and Austrian Delegate to CERN Council Ambassador C. Strohal in the MedAustron facility at CERN building 184.

    CERN Multimedia

    Jean-Claude Gadmer

    2012-01-01

    CERN-HI-1203078 01 - 13: visit of LINAC 3 with M. Benedikt CERN-HI-1203078 14 - 20: in the Roy Billinge room CERN-HI-1203078 21- 22: visit of the LEIR accelerator in building 354 CERN-HI-1203078 23 - 55: signing the guest book with CERN Director-General R. Heuer and Head of International Relations F. Pauss CERN-HI-1203078 56 - 99: in building 184, Governor Pröll and CERN Director-General R. Heuer switch on the MedAustron ion source to produce the proton beam; visit MedAustron facility. CERN-HI-1203078 32:from left to right: Klubobmann and Chairman of EBG MedAustron GmbH Council K. Schneeberger; Director-General R. Heuer;Niederösterreich Governor E. Pröll;Head of International Relations F. Pauss;Permanent Representative of Austria to the UNO and Austrian Delegate to CERN Council Ambassador C. Strohal.

  4. Status of the HIE-ISOLDE Project at CERN

    CERN Document Server

    Kadi, Y; Blumenfeld, Y; Bravin, E; Calatroni, S; Catherall, R; Fraser, M A; Goddard, B; Parchet, D; Siesling, E; Vandoni, G; Venturini Delsolaro, W; Voulot, D; Williams, L R

    2012-01-01

    The HIE-ISOLDE project represents a major upgrade of the ISOLDE facility with a mandate to significantly improve the quality and increase the intensity and energy of radioactive nuclear beams produced at CERN. The project will expand the experimental nuclear physics programme at ISOLDE by focusing on an upgrade of the existing REX linac with a 40 MV superconducting linac comprising thirty-two niobium-on-copper sputter-coated quarter-wave resonators housed in six cryomodules. The new linac will raise the energy of post-accelerated beams from 3 MeV/u to over 10 MeV/u. The upgrade will be staged to first deliver beam energies of 5.5 MeV/u using two high-β cryomodules placed downstream of REX, before the energy variable section of the existing linac is replaced with two low-β cryomodules and two additional high-β cryomodules are installed to attain over 10 MeV/u with full energy variability from as low as 0.45 MeV/u. An overview of the project including a status summary of the different R&D activities and ...

  5. Star spotting at CERN

    CERN Multimedia

    2008-01-01

    This June, two American celebrities (and physics enthusiasts!) came to CERN. Brian Cox gave Mike Einziger (right), lead guitarist with the rock band Incubus, the star treatment in the ATLAS cavern. Jesse Dylan embraces the spirit of ATLAS! Mike Einziger, lead guitarist with the rock band Incubus, visited CERN on Friday 13 June between concerts in Finland and England. Einziger, a lifelong science enthusiast descended into the ATLAS and CMS caverns and visited the SM18 test magnet facility during his brief tour of CERN. Einziger learned about the LHC through watching online lectures from University of Manchester and ATLAS physicist Brian Cox, and was thrilled to have the chance to see the detectors in person. The musician has created an orchestral piece, inspired in part by the work being done at CERN for the LHC, which will have its debut in Los Angeles on 23 August. Just over a week earlier, Jesse Dylan, Hollywood film director a...

  6. Ex / Noise / CERN / Deerhoof

    CERN Multimedia

    CERN, SM18,

    2015-01-01

    Indie rockers Deerhoof battled with the noise of CERN’s magnet test facilities on 30 August 2015. The band visited CERN at the invitation of ATLAS physicist James Beacham, whose pilot project Ex/Noise/CERN collides experimental music artists with experimental particle physics. Credits: -Producer- CERN Video Productions James Beacham François Briard -Director- Noemi Caraban -Camera- Yann Krajewski Piotr Traczyk Noemi Caraban -Crane operator- Antonio Henrique Jorge-Costa -Live recording at CERN- Mixing at Rec studio/Geneva By Serge Morattel -Infography- Daniel Dominguez Noemi Caraban -Deerhoof- John Dieterich Satomi Matsuzaki Ed Rodriguez Greg Saunier w/Deron Pulley SPECIAL THANKS TO: Michal Strychalski Marta Bajko Maryline Charrondiere Luca Bottura Christian Giloux Rodrigue Faes Mariane Catallon Georgina Hobgen Hailey Reissman Marine Bass

  7. Britain exhibition at CERN

    CERN Multimedia

    Bertin; CERN PhotoLab

    1969-01-01

    The United Kingdom inaugurated the Industrial Exhibitions in 1968, and it wasn't till 1971 that other countries staged exhibitions at CERN. This photo was taken in 1969, at the second British exhibition, where 16 companies were present.

  8. Indian President visits CERN

    CERN Multimedia

    Katarina Anthony

    2011-01-01

    On 1 October, her Excellency Mrs Pratibha Devisingh Patil, President of India, picked CERN as the first stop on her official state visit to Switzerland. Accompanied by a host of Indian journalists, a security team, and a group of presidential delegates, the president left quite an impression when she visited CERN’s Point 2!   Upon arrival, Pratibha Patil was greeted by CERN Director General Rolf Heuer, as well as senior Indian scientists working at CERN, and various department directors. After a quick overview of the Organization, Rolf Heuer and the President addressed India’s future collaboration with CERN. India is currently an Observer State of the Organization, and is considering becoming an Associate Member State. A short stop in LHC operations gave Steve Myers and the Accelerator team the opportunity to take the President on a tour through the LHC tunnel. From there, ALICE’s Tapan Nayak and Spokesperson Paolo Giubellino took Pratibha Patil to the experiment&am...

  9. Open Hardware at CERN

    CERN Multimedia

    CERN Knowledge Transfer Group

    2015-01-01

    CERN is actively making its knowledge and technology available for the benefit of society and does so through a variety of different mechanisms. Open hardware has in recent years established itself as a very effective way for CERN to make electronics designs and in particular printed circuit board layouts, accessible to anyone, while also facilitating collaboration and design re-use. It is creating an impact on many levels, from companies producing and selling products based on hardware designed at CERN, to new projects being released under the CERN Open Hardware Licence. Today the open hardware community includes large research institutes, universities, individual enthusiasts and companies. Many of the companies are actively involved in the entire process from design to production, delivering services and consultancy and even making their own products available under open licences.

  10. CERN stationery rejuvenated

    CERN Multimedia

    Anaïs Schaeffer

    2013-01-01

    With the introduction of CERN’s new graphic charter, our complete range of official communications stationery has been redesigned. Discover the newly harmonised and standardised range of CERN stationery.   As the Director-General announced in Bulletin 41-42/2012, a new graphic charter is now in force at CERN. The graphics team has taken this opportunity to redesign all the official CERN stationery, such as business cards, correspondence cards, letterheads, envelopes and file holders, all of which will now boast the same, unified format. In keeping with CERN’s new graphic charter, even the business cards have had a makeover: of a better quality than their predecessors, they now elegantly display the CERN colours (namely the familiar Pantone 286 blue). These new cards, which all follow a standardised format, help to project a standardised corporate image of the Organization. Order them online now! As the Director-General highlighted, “it's increasingly imp...

  11. CERN meets Facebook

    CERN Multimedia

    2012-01-01

    Social networking sites like LinkedIn, MySpace, Google+ and Facebook are on the rise. In particular, the life of youngsters revolves more and more around these sites as they facilitate communication, networking and the exchange of niceties. Who does not today already have an account registered with one of them? A Facebook profile can contain photos, listings of hobbies, job information, preferences…   The on-going effort to externalise some of CERN's computing resources continues, and in order to promote a unified interface for personal information, CERN has decided to establish a partnership with Facebook starting on 1stApril. "CERN is a public and trustworthy international organisation, and as such, our staff and users have nothing to hide from the general public," said Alexi Spiner (IT), project leader responsible for this migration: * The computer profiles of all CERN users will be integrated into the Facebook portal; * In addition, we will also ...

  12. Rejuvenating CERN's Accelerators

    CERN Multimedia

    2004-01-01

    In the coming years and especially in 2005, CERN's accelerators are going to receive an extensive renovation programme to ensure they will perform reliably and effectively when the LHC comes into service.

  13. CERN Science and Technology

    OpenAIRE

    Di Meglio, Alberto

    2015-01-01

    A high-level overview of the relationship between science and technology at CERN and the impact of technology on research with a focus on ICT technologies. Presented as a 12-minute "power-talk" at CIOCity 2015, Brussels

  14. PACMAN at CERN

    CERN Multimedia

    2015-01-01

    PACMAN Particle Accelerator Components Metrology and Alignment to the Nanometre scale. PACMAN is an Innovative Doctoral Program Network, offering training to 10 Early Stage Researchers hosted by CERN thanks to The European Commission FP7 Marie Curie Actions.

  15. YOUR LIFE@CERN

    CERN Multimedia

    Guinot, Genevieve

    2016-01-01

    Balancing work and home life, getting support for your family and thriving in an inclusive and respectful workplace: find out more about the support structures in place to enhance your working life@CERN!

  16. CERN at ESOF 2016

    CERN Multimedia

    James Gillies

    2016-01-01

    CERN had a major presence at the ESOF2016 conference this week, largely in collaboration with our EIROforum partners. A keynote session featuring the CERN Director-General, Fabiola Gianotti, EMBL Director-General, Iain Mattaj, and ESO Director for Science, Rob Ivison, and chaired by BBC science correspondent Pallab Ghosh debated the value of European collaboration in science.   The focal point of EIROforum’s presence was a stand highlighting the societal benefit of EIROforum science. (Image: Matt Wilkinson Photography/ ESOF 2016) A double session covered the science of the EIROs, with ATLAS physicist Claire Lee representing CERN, and there was a session exploring the ways that the EIROforum organisations create business value locally, with the leader of the Knowledge Transfer group, Giovanni Anelli, representing CERN. The focal point of EIROforum’s presence was a stand highlighting the societal benefit of EIROforum science. Side events linked to the stand discussed subjects su...

  17. La nascita del CERN

    CERN Multimedia

    Fidecaro, Giuseppe

    2004-01-01

    CERN was born on 30th September 1954, after the ratification of the Convention by the Member States. After the war, there was a need for international collaboration to rebuild the half-destroyed Europe (2 pages)

  18. Iran approaches CERN

    CERN Multimedia

    2002-01-01

    Members of Parliament from the Islamic Republic of Iran visit SM18. From left to right : Ali Mojtahed-Shabestari, Deputy Ambassador of the Islamic Republic of Iran in Geneva, Diether Blechschmidt, from CERN, Abdol-Rahim Baharvand and Hossain Amiri, from the Iranian Parliament, Norbert Siegel, from CERN, Hossain Afarideh, Rasool Seddighi and Ahmad Shirzad from the Iranian Parliament. Five members of the Parliament of the Islamic Republic of Iran visited CERN for three days at the beginning of May. All of them have PhD's in Physics, as well as holding their job in politics. They are involved in legislation for science, research and education funding in Iran. Apart from their interest in CERN in general, they were especially attracted to the CMS detector, since an Iranian contribution to the LHC is now starting through a collaboration with the Institute for Studies in Theoretical Physics and Mathematics in Tehran.

  19. CERN 1981-8

    International Nuclear Information System (INIS)

    At the CERN Council Meeting in December, the Director General traditionally gives an end-of-year review. This time the presentation took on added significance as it marked the end of the eight-year mandate of Herwig Schopper, who handed over on 1 January to Carlo Rubbia. Looking back over those eight years, Schopper pointed out several major trends. The dramatic growth in CERN 'users' (the scientists coming to the Laboratory to do their research) has led to CERN's research programme becoming really worldwide. The attrition of having to operate an expanding Laboratory under a constant budget has produced in its wake a healthy increase in the efficiency of CERN's big machines and experimental facilities

  20. CERN recognises LHC suppliers

    CERN Multimedia

    2002-01-01

    CERN has just presented the first awards recognising LHC suppliers. The Russian institute BINP, the Belgian firm Cockerill-Sambre and the US company Wah-Chang are the recipients of the first 'Golden Hadrons'.

  1. CERN scientists predict supernova

    CERN Multimedia

    2003-01-01

    "A team of theoretical physicists working at CERN and the Technion Institute of Technology in Israel has developed a theory to account for the mysterious gamma ray bursts that come from the depths of the Universe" (1/2 page).

  2. CERN confirms LHC schedule

    CERN Multimedia

    2003-01-01

    The CERN Council held its 125th session on 20 June. Highlights of the meeting included confirmation that the LHC is on schedule for a 2007 start-up, and the announcement of a new organizational structure in 2004.

  3. Safety at CERN

    CERN Multimedia

    2009-01-01

    Safety is an integral part of our working lives, and should be in our minds whatever job we do at CERN. Ultimately, safety is the responsibility of the Director General – your safety is my concern. That’s why I have this week appointed a new Safety Policy Committee (SAPOCO) that reflects the new Organizational structure of CERN. CERN’s Staff Rules and Regulations clearly lay out in chapter 3 the scope of safety at CERN as well as my responsibilities and yours in safety matters. At CERN, safety is considered in the broadest sense, encompassing occupational Health and Safety, environmental protection, and the safety of equipment and installations. It is my responsibility to put appropriate measures in place to ensure that these conditions are met. And it is the responsibility of us all to ensure that we are fully conversant with safety provisions applicable in our areas of work and that we comply with them. The appointment of a n...

  4. Fusion Revisits CERN

    CERN Multimedia

    2001-01-01

    It's going to be a hot summer at CERN. At least in the Main Building, where from 13 July to 20 August an exhibition is being hosted on nuclear fusion, the energy of the Stars. Nuclear fusion is the engine driving the stars but also a potential source of energy for mankind. The exhibition shows the different nuclear fusion techniques and research carried out on the subject in Europe. Inaugurated at CERN in 1993, following collaboration between Lausanne's CRPP-EPFL and CERN, with input from Alessandro Pascolini of Italy's INFN, this exhibition has travelled round Europe before being revamped and returning to CERN. 'Fusion, Energy of the Stars', from 13 July onwards, Main Building

  5. IH linac development at INS

    International Nuclear Information System (INIS)

    A new tuning method of the gap voltage distribution has been developed for an interdigital H type linac. With an asymmetrically ridged IH resonator, the voltage distribution was significantly improved by introducing a pair of Wing Tuners. The quality factor and the shunt impedance of the resonant cavity remained practically unchanged by these inductive tuning elements. The Wing Tuners strongly affect on linac characteristics similarly to the local reduction of the resonator diameter. A prototype IH linac has been constructed to demonstrate the operational capabilities of the tuning method. The linac is designed to accelerate protons from an energy of 15 to 161 keV with an rf frequency of 100 MHz. The linac tank is made of mild steel, and 48 and 92 cm in diameter and in length, respectively. The drift tube structure of π/3π mode is adopted, and an electrostatic quadrupole lens is installed in every 3π drift tube. The experimental results of the proton model agree well with the design characteristics. (author)

  6. CERN expositions permanentes

    CERN Document Server

    2016-01-01

    Explore by yourself the issues CERN's physicists are trying to solve: given that the entire universe is made of particles, where do they come from? Why do they behave in the way they do? Discover the massive apparatus used by physicists at CERN, like the LHC, and see how each part works. And if you have more time on site, follow the LHC circuit at ground level to understand in situ this giant machine. Enter our exhibitions. Welcome!

  7. Future Perspectives at CERN

    OpenAIRE

    Ellis, John

    2002-01-01

    Current and future experiments at CERN are reviewed,with emphasis on those relevant to astrophysics and cosmology. These include experiments related to nuclear astrophysics, matter-antimatter asymmetry, dark matter, axions, gravitational waves, cosmic rays, neutrino oscillations, inflation, neutron stars and the quark-gluon plasma. The centrepiece of CERN's future programme is the LHC, but some ideas for perspectives after the LHC are also presented.

  8. CERN: Making CLIC tick

    International Nuclear Information System (INIS)

    While the Large Hadron Collider (LHC) scheme for counter-rotating proton beams in a new superconducting ring to be built in CERN's existing 27-kilometre LEP tunnel is being pushed as the Laboratory's main construction project for the 1990s, research and development continues in parallel for an eventual complementary attack on new physics frontiers with CERN's Linear Collider - CLIC - firing TeV electron and positron beams at each other

  9. Cern Women's Club

    CERN Multimedia

    Cern Women's Club

    2014-01-01

      CERN WOMEN’S CLUB   Coffee Morning Tuesday 10th  June 2014, 12:30   Annual Club Lunch at the restaurant “Le Coq Rouge” in St-Genis-Pouilly Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://web.cern.ch/Club-WomensClub/

  10. Cern women's club

    CERN Document Server

    Club des cernoises

    2014-01-01

    CERN WOMEN’S CLUB Coffee Morning Tuesday 13th  May 2014, 9:30 Bldg 504,  (Restaurant No 2 – DSR) 1st Floor, Club Room 3   Annual General Meeting Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://cern.ch/Club-WomensClub/

  11. CERN, Accelerating Science

    CERN Multimedia

    De Melis, Cinzia

    2015-01-01

    What is the Universe made of? Where did it come from, where is it going and why does it behave the way it does? These are some of the questions that CERN set out to address when a small number of pioneering scientists created Europe’s first scientific international organization. Founded in 1954, in the aftermath of the Second World War, CERN is not only a first-class centre for fundamental research but also a pioneering adventure in international collaboration.

  12. CERN permanent exhibitions

    CERN Multimedia

    2016-01-01

    Explore by yourself the issues CERN's physicists are trying to solve: given that the entire universe is made of particles, where do they come from? Why do they behave in the way they do? Discover the massive apparatus used by physicists at CERN, like the LHC, and see how each part works. And if you have more time on site, follow the LHC circuit at ground level to understand in situ this giant machine. Enter our exhibitions. Welcome!

  13. The CERN's year

    International Nuclear Information System (INIS)

    CERN, the European organization for nuclear research, has just celebrated its fifty years of existence. Its first goal was to counterbalance the migration of physics scientists towards the USA by the creation of a physics laboratory gathering scientists from the different European countries. Today, the CERN's mission has changed and has overcome all the expectations of its founders. In 2008, it will become, with the LHC (Large Hadron Collider), the biggest particle accelerator in the world. The CERN employs about 3000 physicists, engineers, technicians and workers. There is also 6500 people from 80 different countries who use the CERN's facilities during the year. The CERN is controlled by 20 European member states and 6 observer countries, and 20 non-member countries participate to the programs in progress. The CERN's power comes from its international and cosmopolitan spirit. The whole most famous physicists of the world can work together for the progress of science and for a better understanding of matter, of its interactions and of our universe. Two Nobel prices of physics come from the CERN: C. Rubbia and S. Van der Meer in 1983 for the discovery of W+, W- and Z0 bosons, and G. Charpak for the development of particle detectors. One can foresee that the LHC will allow new scientific achievements, like for instance, during experiments for the quest of the famous Higgs boson. It is important also to mention that the CERN has been at the origin of several technological innovations in all technical and engineering domains in the framework of its fundamental physics researches. (J.S.)

  14. CERN: RICH dividends

    International Nuclear Information System (INIS)

    Back in 1985, when the hunt was on at CERN's proton-antiproton collider for as many W and Z particles as possible, an Athens/CERN/Uppsala/Wuppertal group had an unique chance to install a ring-imaging Cherenkov counter (RICH) in one of the twelve end-cap sectors of the big UA2 experiment and squeeze in a short run

  15. CERN Library | Agnes Chavez @ CERN | 3 May

    CERN Multimedia

    CERN Library

    2016-01-01

    Agnes Chavez is an artist and educator participating in a two-week research stay through the ATLAS Experiment at CERN.   Tuesday 3 May at 4 p.m. CERN Library (52 1-052) Artist/educator, Agnes Chavez will share video outcomes from Projecting Particles, an Art + Science + Education collaboration with ATLAS. The Sci-Art project combines the International Masterclass with Projection Art in a series of teen-led youth workshops and projection events. In this presentation Chavez will share her vision and describe the research and development behind the project, now in its third year.  For the Projecting pARTicles series of art installations she has formed an interdisciplinary team of programmers, artists, scientists and educators to investigate how we can create art and education interventions inspired by emerging particle physics theories. Chavez’s art experiments with data visualization, sound and projections to create participatory environments. She collaborates with programmers t...

  16. Civil Engineering Feasibility Studies for Future Ring Colliders at CERN

    CERN Document Server

    Bruning, O; Myers, S; Osborne, J; Rossi, L; Waaijer, C; Zimmermann, F

    2013-01-01

    CERN civil engineers are studying the feasibility of several potential ring colliders to complement the LHC: an 80km circular tunnel to house the TLEP and VHE-LHC, and the ring-ring and linac-ring options for the LHeC. The feasibility of these projects is largely dependent on civil design and geotechnical and environmental risks. As civil infrastructure works typically represent one third of the cost of major physics projects, it is critical that the construction costs are well understood from the conceptual stage. This proceeding presents the first results of the feasibility studies for the 80km tunnel and the linac-ring LHeC. Presented at IPAC'13 Shanghai, 12-17 May 2013

  17. CREATIVE COLLISIONS: ARTS @CERN

    CERN Document Server

    CERN. Geneva

    2012-01-01

    In 2000, CERN hosted Signatures of the Invisible – one of the landmark initiatives in arts and science. In 2012, CERN is now initiating its own science/arts programme Collide@CERN in different arts disciplines. The first of these is in digital arts, and the international competition to find the winning artist is called the Prix Ars Electronica Collide@CERN. It was announced September 2011 at CERN’s first collaboration with an international arts festival – Ars Electronica in Linz. The competition attracted over 395 entries from 40 countries around the world. The winning artist, Julius Von Bismarck, will begin his two month residency here at CERN next month. Ariane Koek who leads on this initiative, discusses the residency programme, as well as the background about Art@CERN. History has shown that particle physics and the arts are great inspiration partners. The publication of the paper by Max Planck which gave birth to quantum mechanics as well as those by Einstein, heavily influenced some of the grea...

  18. Sharing resources@CERN

    CERN Multimedia

    2002-01-01

    The library is launching a 'sharing resources@CERN' campaign, aiming to increase the library's utility by including the thousands of books bought by individual groups at CERN. This will improve sharing of information among CERN staff and users. Until now many people were unaware that copies of the same book (or standard, or journal) are often held not only by the library but by different divisions. (Here Eduardo Aldaz, from the PS division, and Isabel Bejar, from the ST division, read their divisional copies of the same book.) The idea behind the library's new sharing resources@CERN' initiative is not at all to collect the books in individual collections at the CERN library, but simply to register them in the Library database. Those not belonging to the library will in principle be unavailable for loan, but should be able to be consulted by anybody at CERN who is interested. "When you need a book urgently and it is not available in the library,' said PS Division engineer Eduardo Aldaz Carroll, it is a sham...

  19. CERN openlab Open Day

    CERN Multimedia

    Andrew Purcell

    2015-01-01

    CERN openlab is the unique public-private partnership between CERN and leading companies in the field of information and communication technology. The programme is now entering an exciting new phase and is expanding to include other public research organisations for the first time. A special event will be held at CERN to mark this occasion.   CERN openlab was created in 2001 and is now entering its fifth three-year phase (2015-2017). Its mission is to accelerate the development of cutting-edge solutions to be used by the scientific community to control the operations of complex machines and to analyse the vast amounts of data produced by physics experiments. During Run 2 of the LHC, it is expected that the CERN Data Centre will store more than 30 petabytes of data per year from the LHC experiments, which is equivalent to about 1.2 million Blu-ray discs, or 250 years of HD video. Testing in this demanding environment provides the companies collaborating in CERN openlab with valuable feedback o...

  20. CERN Relay Race

    CERN Multimedia

    Running Club

    2010-01-01

    This year’s CERN Relay Race will take place around the Meyrin site on Thursday 20th May at 12h00. This annual event is for teams of 6 runners covering distances of 1000m, 800m, 800m, 500m, 500m and 300m respectively. Teams may be entered in the Seniors, Veterans, Ladies, Mixed or Open categories. The registration fee is 10 CHF per runner, and each runner receives a souvenir prize. As usual, there will be a programme of entertainments from 12h in the arrival area, in front of the Restaurant no. 1. Drinks, food, CERN club information and music will be available for the pleasure of both runners and spectators. The race starts at 12h15, with results and prize giving at 13:15.   For details of the race, and of how to sign up a team, please visit: https://espace.cern.ch/Running-Club/CERN-Relay The event is organised by the CERN Running Club with the support of the CERN Staff Association.  

  1. CERN Pensioners Association

    CERN Multimedia

    The GAC Committee

    2004-01-01

    Open Day To all CERN retired staff As part of the celebrations organised for the 50th anniversary of CERN, an Open Day will be held on Saturday 16 October 2004. Anyone willing to act as a guide, either to help and inform visitors at the reception points or to guide groups of visitors, sharing your knowledge with them, is invited to fill in the attached form. A preparatory meeting will be arranged for those who left CERN some time ago and whose knowledge of the site may no longer be quite up-to-date. The Open Day organisers need your help, which will be very much appreciated. We hope that many pensioners will participate. People with internet access may enrol directly without coming to CERN, http://www.cern.ch/CERN50/openday The GAC Committee OPEN DAY : CALL FOR VOLUNTEERS 16th October 2004 So now you are excited about the Open Day, how can you participate? As you can imagine, for such a large number of activities, we need many volunteers. Please return the following form to Elena Battis...

  2. CERN In Focus

    CERN Multimedia

    CERN audiovisual service

    2008-01-01

    First edition 2008 of Cern in Focus. On behalf of the audiovisual team, a selection of the latest videos filmed at CERN. Every six weeks, we will bring you the latest in CERN's activities, from LHC start up to the Computing Grid, featuring the experiments and many other goings-on at CERN. The agenda of this first edition of CERN in Focus features the visit of the prime minister of Malta, Lawrence Gonzi... CMS and the final descent of the YE-1 end cap... The departure of UA1 magnets to Japan... The start up of sectors 4 and 5... And finally, in our sports round up... We'll talk about football. New in brief this month... The final bolt is in place : On 7th November, in the bowels of the LHC tunnel, CERN's Director General Robert Aymar tightened a gold-plated bolt for the last arc interconnection of sector 1-2. This symbolic gesture marks the completion of all the arc interconnections of the LHC. Last welding work: it was never going to be an easy task. On this day last year just one sector had been completed,...

  3. Status of the RFD Linac Structure Developement

    OpenAIRE

    Swenson, Donald A.

    2000-01-01

    The Proof-of-Principle (POP) prototype of the Rf-Focused Drift tube (RFD) linac structure is currently under test at Linac Systems, after years of delay due to a variety of technical problems. A discussion of these technical problems and their solutions will be presented. The status of these tests will be reported. Plans for future development of this linac structure will be revealed. Potential uses of this linac structure for a variety of scientific, medical, and industrial applications will...

  4. Upgrading the Fermilab Linac local control system

    International Nuclear Information System (INIS)

    A new control system for the Fermilab Linac is being designed, built and implemented. First, the nine-year-old linac control system is being replaced. Second, a control system for the new 805 MHz part of the linac is being built. The two systems are essentially identical, so that when the installations are complete, we will still have a single Linac Control System. 8 refs., 5 figs

  5. RF system of FELI linac

    International Nuclear Information System (INIS)

    FELI (Free Electron Laser Research Institute, Inc.) is constracting a Free Electron Laser facility covering from 20μm (infrared region) to 0.35μm (ultra violet region), using an S-band linac. The building will be completed in November 1993 and linac will start to be installed in December 1993. RF system of linac for FEL is required of long pulse duration and high stability. An S-band klystron (Toshiba E3729) is operated in three pulse operation modes (pulse width and peak RF power); 24μs-24MW, 12.5μs-34MW, 0.5μs-70MW. Each klystron modulator has the PFN consisting of 4 parallel networks of 24 capacitors and 24 inductors, and it has a line switch of optical thyristor stack. (author)

  6. Cockcroft-Walton generator for Linac 2

    CERN Multimedia

    Photographic Service

    1976-01-01

    Its higher voltage of 750 kV, compared to the 520 kV Cockcroft-Walton of Linac 1, contributed to the higher current that Linac 2 could deliver. The cubic container houses the electronics. The ion-source, in the spherical container, delivered protons and, for tests, also deuterons. In 1993 an RFQ replaced it as Linac 2 preinjector.

  7. IMPACT simulation and the SNS linac beam

    International Nuclear Information System (INIS)

    Multi-particle tracking simulations for the SNS linac beam dynamics studies are performed with the IMPACT code. Beam measurement results are compared with the computer simulations, including beam longitudinal halo and beam losses in the superconducting linac, transverse beam Courant-Snyder parameters and the longitudinal beam emittance in the linac. In most cases, the simulations show good agreement with the measured results

  8. SUPERCONDUCTING LINAC FOR THE SPALLATION NEUTRON SOURCE

    International Nuclear Information System (INIS)

    The Spallation Neutron Source (SNS) linac is comprised of both normal and superconducting rf (SRF) accelerating structures. The SRF linac accelerates the beam from 186 to 1250 MeV through 117 elliptical, multi-cell niobium cavities. This paper describes the SRF linac architecture, physics design considerations, cavity commissioning, and the expected beam dynamics performance

  9. Intrabeam stripping in H- Linacs

    CERN Document Server

    Lebedev, V; Ostigy, J -F; Alexandrov, A; Shishlo, A

    2012-01-01

    A beam loss in the superconducting part of the SNS linac has been observed during its commissioning and operation. Although the loss does not prevent the SNS high power operation, it results in an almost uniform irradiation of linac components and increased radiation levels in the tunnel. Multi-particle tracking could neither account for the magnitude of the observed loss nor its dependence on machine parameters. It was recently found that the loss is consistent with the intrabeam particle collisions resulting in stripping of H- ions. The paper describes experimental observations and corresponding analytical estimates of the intrabeam stripping.

  10. Spotlight on CERN : Recruitment and professions at CERN

    CERN Multimedia

    CERN video productions

    2010-01-01

    Spotlight on CERN No. 3 Recruitment and professions at CERN Welcome to the Globe of Science and Innovation for this third edition of "Spotlight on CERN". When one thinks about professions at CERN, what springs to mind? Physicists? Engineers? In fact, the smooth operation of the Organisation relies on a diversity of professions and this in itself, poses a real challenge in terms of recruitment in CERN member states. Today, to tell us more about this challenge and about CERN professions in general, we welcome James Purvis, Head of the HR Recruitment, Programmes and Monitoring group, and Lore Taillieu, leader of the group's Recruitment section.

  11. Fifty years of the CERN Proton Synchrotron Volume 2

    CERN Document Server

    CERN. Geneva; Manglunki, Django; Burnet, Jean-Paul; Carli, Christian; Chanel, Michel; Garoby, Roland; Giovannozzi, Massimo; Hancock, Steven; Haseroth, Helmut; Hübner, Kurt; Küchler, Detlef; Lewis, Julian; Lombardi, Alessandra; Martini, Michel; Maury, Stephan; Métral, Elias; Möhl, Dieter; Plass, Günther; Rinolfi, Louis; Scrivens, Richard; Steerenberg, Rende; Steinbach, Charles; Vretenar, Maurizio; Zickler, Thomas

    2013-01-01

    This report sums up in two volumes the first 50 years of operation of the CERN Proton Synchrotron. After an introduction on the genesis of the machine, and a description of its magnet and powering systems, the first volume focuses on some of the many innovations in accelerator physics and instrumentation that it has pioneered, such as transition crossing, RF gymnastics, extractions, phase space tomography, or transverse emittance measurement by wire scanners. The second volume describes the other machines in the PS complex: the proton linear accelerators, the PS Booster, the LEP pre-injector, the heavy-ion linac and accumulator, and the antiproton rings.

  12. Fifty years of the CERN Proton Synchrotron Volume 1

    CERN Document Server

    CERN. Geneva; Carli, Christian; Chanel, Michel; Garoby, Roland; Gilardoni, Simone; Giovannozzi, Massimo; Hancock, Steven; Haseroth, Helmut; Hübner, Kurt; Küchler, Detlef; Lewis, Julian; Lombardi, Alessandra; Manglunki, Django; Martini, Michel; Maury, Stephan; Métral, Elias; Möhl, Dieter; Plass, Günther; Rinolfi, Louis; Scrivens, Richard; Steerenberg, Rende; Steinbach, Charles; Vretenar, Maurizio; Zickler,Thomas

    2011-01-01

    This report sums up in two volumes the first 50 years of operation of the CERN Proton Synchrotron. After an introduction on the genesis of the machine, and a description of its magnet and powering systems, the first volume focuses on some of the many innovations in accelerator physics and instrumentation that it has pioneered, such as transition crossing, RF gymnastics, extractions, phase space tomography, or transverse emittance measurement by wire scanners. The second volume describes the other machines in the PS complex: the proton linear accelerators, the PS Booster, the LEP pre-injector, the heavy-ion linac and accumulator, and the antiproton rings.

  13. CAS CERN Accelerator School third general accelerator physics course

    International Nuclear Information System (INIS)

    The general course on accelerator physics given in Salamanca, Spain, closely followed those organised by the CERN Accelerator School at Gif-sur-Yvette, Paris in 1984, and at Aarhus, Denmark in 1986 and whose proceedings were published as CERN Yellow Reports 85-19 (1985) and 87-10 (1987) respectively. However, certain topics were treated in a different way, improved or extended, while some new ones were introduced and it is all of these which are included in the present proceedings. The lectures include beam-cooling concepts, Liouville's theorem and emittance, emittance dilution in transfer lines, weak-betatron coupling, diagnostics, while the seminars are on positron and electron sources, linac structures and the LEP L3 experiment, together with industrial aspects of particle accelerators. Also included are errata and addenda to the Yellow Reports mentioned above. (orig.)

  14. An exact "Tour de France" passes through CERN

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    In August 2011, the renowned French mountaineer Lionel Daudet set off from Mont Blanc on a "Tour de la France exacte",  strictly following the 5,000 km of land borders and coastline without using a single motorised vehicle. And about a week into his expedition, the French border led him… to CERN of course… where he described his experience as out of the ordinary.   Lionel Daudet at one of the posts marking the French border in Meyrin (next to the Linac 4 building).  The words "out of the ordinary" are not used lightly by a man who has scaled France's highest peaks in extreme conditions and conquered the world's greatest climbs (mainly solo), from Alaska to Patagonia. "I had never visited a physics lab before today," confesses Lionel Daudet, sitting at a table in the CERN cafeteria. "You get the feeling that knowledge is being built here. When I crossed this particular border...

  15. CERN Relay Race

    CERN Document Server

    2009-01-01

    The CERN relay race, now in its 39th year, is already a well-known tradition, but this year the organizers say the event will have even more of a festival feeling. Just off the starting line of the CERN relay race.For the past few years, spectators and runners at the CERN relay race have been able to enjoy a beer while listening to music from the CERN music and jazz clubs. But this year the organizers are aiming for "even more of a festival atmosphere". As David Nisbet, President of the CERN running club and organizer of the relay race, says: "Work is not just about getting your head down and doing the theory, it’s also about enjoying the company of your colleagues." This year, on top of music from the Santa Luis Band and the Canettes Blues Band, there will be demonstrations from the Aikido and softball clubs, a stretching session by the Fitness club, as well as various stalls and of course, the well-earned beer from AGLUP, the B...

  16. Inspired by CERN

    CERN Multimedia

    2004-01-01

    Art students inspired by CERN will be returning to show their work 9 to 16 October in Building 500, outside the Auditorium. Seventeen art students from around Europe visited CERN last January for a week of introductions to particle physics and astrophysics, and discussions with CERN scientists about their projects. A CERN scientist "adopted"each artist so they could ask questions during and after the visit. Now the seeds planted during their visit have come to fruition in a show using many media and exploring varied concepts, such as how people experience the online world, the sheer scale of CERN's equipment, and the abstractness of the entities scientists are looking for. "The work is so varied, people are going to love some pieces and detest others," says Andrew Charalambous, the project coordinator from University College London who is also curating the exhibition. "It's contemporary modern art, and that's sometimes difficult to take in." For more information on this thought-provoking show, see: htt...

  17. Spaceflight participant visits CERN!

    CERN Multimedia

    Kathryn Coldham

    2016-01-01

    On 15 July, CERN welcomed spaceflight participant Anousheh Ansari.   Anousheh Ansari’s grin stretches from ear to ear, during an intriguing conversation with Nobel laureate Samuel C.C. Ting at AMS POCC. (Image: Maximilien Brice/CERN) Iranian-American Anousheh Ansari was the first-ever female spaceflight participant, spending eight days on the International Space Station (ISS) in 2006. She now has a new addition to her list of extraordinary sights ­– the home of the world’s largest particle accelerator: CERN.   On 15 July, Anousheh Ansari came to CERN and, unsurprisingly, visited the control room of the experiment attached to the ISS: the AMS. At the AMS Payload Operations Control Centre (AMS POCC) on CERN’s Prévessin site, she met the Nobel laureate Samuel Ting, spokesperson of the AMS experiment. Ansari and her accompanying guests were thrilled to expand their knowledge about CERN, its research and its...

  18. CERN CAR STICKERS

    CERN Multimedia

    Service Accueil et Controle d'Accès; ST Division

    1999-01-01

    In accordance with Operational Circular n¡ 2, paragraph 21, CERN car stickers are to be renewed. The new stickers are now available and will be valid for a year.Youare therefore requested:either to obtain them from the distribution points for new stickers (see below); or to send us the application form below, duly completed, via the internal mail; or to complete the application form directly via the Web at the address: http://cern.ch/registration-stickers. Each vehicle has to carry a sticker and needs a separate application form.Vehicles bearing CERN diplomatic plates (CD07, 431K and CD series) do not need a sticker for access to the CERN areas.Thank you.List of distribution points:Registration Service (bldg 55 1st floor), open from 07h30 to 16h30. Building 33 (entrance hall), open from 08h00 to 18h00. Building 120 (ground floor), outside working hours.Name Surname CERN identification number Vehicle registration plates Country issuing the plates Vehicle ma...

  19. Radiography at CERN

    CERN Multimedia

    HSE Unit

    2014-01-01

    What is industrial radiography? It is a non-destructive method with a wide variety of applications, such as inspecting the quality of a weld. It uses high-energy radioactive sources or an X-ray generator.   Is this inspection technique used at CERN? Yes, it is widely used at CERN by the EN-MME Group, which outsources the work to one or more companies, depending on the workload. Is it possible to carry out radiography anywhere at CERN? Yes, it is possible to carry out radiography in any building/accelerator/experiment area at CERN (including in areas which are not normally subject to radiological hazards). When is radiography carried out? It normally takes place outside of working hours (7 p.m. to 6 a.m.). How will I know if radiography is taking place in my building? If this activity is planned in a CERN building, notices will be affixed to all of its main entrance doors at least 24 hours in advance. What are the risks? There is a risk of exposure to very high levels of radiation, dep...

  20. Apprenticeship at CERN

    CERN Multimedia

    Staff Association

    2016-01-01

    In 1961, based on the finding that the evolution of the labour market created a growing need for qualified staff, a first agreement between the Republic and Canton of Geneva and CERN was signed. One of the objectives of this agreement was the vocational training of young electronics and physics laboratory technicians. CERN, an important stakeholder in the local economy, highlighted with this agreement its willingness to participate in the local social and economic development. The first apprentice arrived at CERN in 1965. In 1971, the apprenticeship centre was created; it now hosts over twenty apprentices in total and welcomes about six new apprentices each year. These apprenticeships are for young people aged between 15 and 21 years, coming from one of the CERN Member States, and having completed their mandatory education, e.g. 11th grade in Switzerland or 3ème in France. The training is divided between working time at CERN and one or two days per week at school (CFPT in Geneva for electronics or ...

  1. CERN television news

    CERN Document Server

    2002-01-01

    CERN events brought right to your desktop by the new video bulletin.   CERN now has its very own news broadcast , or rather 'webcast', with a host of special reports and even a star presenter. From today onwards, just go to the Bulletin's web page, click on the 'video news' link and sit back and enjoy the latest news about CERN, presented in images by Wendy Korda. The ten-minute newscast in both French and English, the Organization's two official languages, presents interviews, pictures of experiments and computer-generated graphics, bringing you right up to date with some of the Laboratory's latest stories. The show concludes with a selection of the best snapshots taken by the CERN Photo Lab. So every one or two months CERN's Audio-Video Service (ETT/DH) will be putting together a video news report that you can watch on your own desktop computer. Daniel Boileau, Patrick Gilbert de Vautibault and Jacques Fichet, the Service's three technicians, came up with the idea of producing this regular feat...

  2. EU Commissioner visits CERN

    CERN Multimedia

    2005-01-01

    European Commissioner Viviane Reding in front of one of the computers showing how the Grid works and, from left to right, Robert Aymar, CERN's Director-General, Wolfgang von Rüden, Head of the Information Technology Department, and Bob Jones, the newly appointed director of the EGEE project since 1st November. Viviane Reding, European Commissioner for Information Society and Media, visited CERN on 28 October. Accompanied throughout by CERN's Director-General, Robert Aymar, and the Head of the Information Technology Department, Wolfgang von Rüden, the Commissioner visited the ATLAS cavern before going on to the Information Technology Department, where she was given a complete overview of CERN's activities in the strategic field of Grid computing. Viviane Reding's visit coincided with the end of the EGEE (Enabling Grids for E-sciencE) conference, which took place in Pisa in Italy. Co-ordinated by CERN and funded by the European Commission, the EGEE project aims to set up a worldwide grid infrastructure for sc...

  3. Lectures for CERN pensioners

    CERN Multimedia

    SC Unit

    2008-01-01

    The CERN Medical Service and the Pensioners Association are pleased to invite CERN pensioners to a series of lectures given by professors and specialists from the Teaching Hospitals and the Faculty of Medicine of the University of Geneva on the following topic: PROMOTION OF OPTIMUM BRAIN AGEING The lectures will take place in the Main CERN Auditorium (Building 60) from 2.30 p.m. to 4.30 p.m. on the following dates: Wednesday 12 November 2008: Assessing the extent of brain ageing Dr Dina ZEKRY Friday 12 December 2008: Can memory decline be prevented? Pr Jean-Pierre MICHEL Thursday 15 January 2009: Diagnosing and treating Alzheimer’s disease Pr Gabriel GOLD Wednesday 25 February 2009: What is the brain reserve? Speaker’s name to be announced at a later date The lectures will be given in French, with transparencies in English, and will be followed by a wide-ranging debate with the participants. CERN Medical Service - Pensioners Association - CERN-ESO (GAC-EPA)

  4. CERN Phonebook evolution

    CERN Multimedia

    Sébastien Dellabella

    2012-01-01

    Consolidating phonebooks at CERN We have had many phonebooks in the past, Xwho (now decommissioned), the NICE phonebook on Windows PCs, and more recently the web site people.cern.ch. However, diversity doesn’t always equate to improved efficiency or quality. So in order to reduce the maintenance effort and to improve the user experience, we have consolidated these various phonebooks into a single web application: phonebook.cern.ch Motivations for change The NICE Phonebook was introduced in the year 2000 when Windows 95 was the major desktop platform. Since then, a lot has changed not only in technology and the desktop landscape but also in the variety of devices used to access the data (notably smartphones and tablets). Updating the NICE phonebook is slow. Once the master database is modified it can take up to two days for the data to propagate to the application. Thus, we are now planning the retirement of the NICE phonebook application. The new Phonebook.cern.ch The new phonebook.cern.ch...

  5. Drift Tube Linac Conditioning of Tank1

    CERN Document Server

    Shafqat, N; Toor, W A

    2014-01-01

    Tank1 of the Drift Tube Linac (DTL) of the Linac4 has been conditioned at the Linac4 tunnel. The tank was tuned for resonance at 352.2 MHz, and stable operation has been achieved with 725 µs long RF pulses at a repetition rate of 1 Hz. The maximum RF level that has been reached is 810 kW with a pulse width of 600 µs. Since this was the first RF structure exclusively conditioned in the Linac4 tunnel with the operation and control software of Linac4, some related issues and limitations had to be taken into account.

  6. Emittance growth in rf linacs

    International Nuclear Information System (INIS)

    As the space-charge limit is approached, the current that can be accelerated in an rf linac and the output emittance that can be expected are discussed. The role of the envelope equations to estimate limits is outlined. The results of numerical experiments to explore general properties of emittance growth are given

  7. Design of long induction linacs

    International Nuclear Information System (INIS)

    A self-consistent design strategy for induction linacs is presented which addresses the issues of brightness preservation against space charge induced emittance growth, minimization of the beam breakup instability and the suppression of beam centroid motion due to chromatic effects (corkscrew) and misaligned focusing elements. A simple steering algorithm is described that widens the effective energy bandwidth of the transport system

  8. Prototype of the RFD linac structure

    International Nuclear Information System (INIS)

    A 2.5-MeV prototype of a 'Compact 12-MeV Proton Linac for PET Isotope Production' is under construction at Linac Systems. This unit will serve as the 'proof of principle' for the revolutionary new Rf Focused Drift tube (RFD) linac structure. Both the prototype and the production unit will operate at 600 MHz. The prototype comprises a 25- keV proton ion source, a short LEBT, a 0.65-m-long RFQ linac to 0.8 MeV, and a 0.35-m-long RFD linac to 2.5 MeV. Because of the similarity of the accelerating and focusing properties of the RFQ and RFD linac structures, no matching section is required between them. The two linac structures will be resonantly coupled together and powered by a collection of planar triodes. The prototype is scheduled for completion in the fall of 1997. (author)

  9. Progress in design of the SNS linac

    International Nuclear Information System (INIS)

    The Spallation Neutron Source (SNS) is a six-laboratory collaboration to build an intense pulsed neutron facility at Oak Ridge, TN. The linac design has evolved from the conceptual design presented in 1997 in order to achieve higher initial performance and to incorporate desirable upgrade features. The linac is now designed to produce 2-MW beam power using a combination of radio-frequency quadrupole (RFQ) linac, drift-tube linac (DTL), coupled-cavity linac (CCL), and superconducting-RF (SRF) linac. Designs of each of these elements support he high peak intensity and high quality beam required for injection into the SNS accumulator ring. This paper will trace the evolution of the linac design and the progress made in the R and D program. (author)

  10. PROGRESS IN DESIGN OF THE SNS LINAC

    Energy Technology Data Exchange (ETDEWEB)

    R. HARDEKOPF

    2000-11-01

    The Spallation Neutron Source (SNS) is a six-laboratory collaboration to build an intense pulsed neutron facility at Oak Ridge, TN. The linac design has evolved from the conceptual design presented in 1997 to achieve higher initial performance and to incorporate desirable upgrade features. The linac will initially produce 2-MW beam power using a combination of radio-frequency quadruple (RFQ) linac, drift-tube linac (DTL), coupled-cavity linac (CCL), and superconducting-cavity linac (SCL). Designs of each of these elements support the high peak intensity and high quality beam required for injection into the SNS accumulator ring. This paper will trace the evolution of the linac design, the cost and performance factors that drove architecture decisions, and the progress made in the R&D program.

  11. Progress in design of the SNS linac

    Energy Technology Data Exchange (ETDEWEB)

    Hardekopf, R. [Los Alamos National Laboratory, Los Alamos, NM (United States)

    2001-03-01

    The Spallation Neutron Source (SNS) is a six-laboratory collaboration to build an intense pulsed neutron facility at Oak Ridge, TN. The linac design has evolved from the conceptual design presented in 1997 in order to achieve higher initial performance and to incorporate desirable upgrade features. The linac is now designed to produce 2-MW beam power using a combination of radio-frequency quadrupole (RFQ) linac, drift-tube linac (DTL), coupled-cavity linac (CCL), and superconducting-RF (SRF) linac. Designs of each of these elements support the high peak intensity and high quality beam required for injection into the SNS accumulator ring. This paper will trace the evolution of the linac design and the progress made in the R and D program. (author)

  12. Dalai Lama at CERN

    International Nuclear Information System (INIS)

    On 30 August CERN turned aside from its usual day-to-day preoccupations when Director-General Herwig Schopper played host to the Dalai Lama of Tibet and his entourage during the holy man's 1983 visit to Europe. In welcoming his visitor, Professor Schopper stressed the role of particle physics in helping to understand man's place in the cosmos, and how the Dalai Lama's interest would further the interrelation of science, philosophy and religion. The Dalai Lama visited the UA 1 experiment (rolled back into its 'garage' during the present fixed target operations at CERN) and the large installations for the neutrino experiments in the West Area of the SPS machine. There was an intriguing exchange of views with CERN theorists, who described how science has continually modified our view of the world around us

  13. CMS Centre at CERN

    CERN Multimedia

    2007-01-01

    A new "CMS Centre" is being established on the CERN Meyrin site by the CMS collaboration. It will be a focal point for communications, where physicists will work together on data quality monitoring, detector calibration, offline analysis of physics events, and CMS computing operations. Construction of the CMS Centre begins in the historic Proton Synchrotron (PS) control room. The historic Proton Synchrotron (PS) control room, Opened by Niels Bohr in 1960, will be reused by CMS to built its control centre. TThe LHC@FNAL Centre, in operation at Fermilab in the US, will work very closely with the CMS Centre, as well as the CERN Control Centre. (Photo Fermilab)The historic Proton Synchrotron (PS) control room is about to start a new life. Opened by Niels Bohr in 1960, the room will be reused by CMS to built its control centre. When finished, it will resemble the CERN Contro...

  14. Safety alarms at CERN

    CERN Document Server

    Ninin, P; Henny, L

    1998-01-01

    In order to operate the CERN accelerators complex safely, the acquisition, transport and management of safety alarms is of crucial importance. The French regulatory authority [Direction de Sûreté des Installations Nucléaires de Base (INB)] defines them as Level 3 alarms; they represent as such a danger for the life and require an immediate intervention of the Fire Brigade. Safety alarms are generated by fire and flammable gas detection systems, electrical emergency stops, and other safety related systems. Level 3 alarms are transmitted for reliability reasons to their operation centre: the CERN Safety Control Room (SCR) using two different media: the hard-wired network and a computer based system. The hard-wired networks are connected to local panels summarizing in 34 security areas the overall CERN geography. The computer based system offers data management facilities such as alarm acquisition, distribution, archiving and information correlation. The Level 3 alarms system is in constant evolution in order...

  15. CERN welcomes European science

    CERN Multimedia

    2002-01-01

    On 3 and 4 October CERN will host a special workshop for Marie Curie fellows. This programme is a key plank in the EU's strategy for creating a European research area.     With thousands of scientists from all over the continent working together, CERN is already an exemplary European science showcase. On 3 and 4 October, the Laboratory will contribute further to unifying all European science by hosting a special workshop for EU-funded Marie Curie fellows. This scheme gives young researchers from around the continent the mobility to go to wherever Europe's best facilities in their chosen field happen to be. The event that will take place at CERN, entitled 'Special workshop of Marie Curie Fellows on research and training in physics and technology', organised together with the European Commission, is a continuation of a series of workshops with the aim, among others, of promoting young researchers, supporting their training and mobility, and facilitating the interdisciplinary dissemination of knowledge. Dur...

  16. CERN UN Roundtable

    CERN Document Server

    CERN. Geneva; Del Rosso, Antonella; Gillies, James

    2014-01-01

    In the spirit of strengthening links and sharing best practices among the two Organizations, UNOG and CERN will be jointly organizing a round table discussion on the issue of “The challenge of communicating science and technology to the world: issues and solutions”. It is hoped that the discussions can highlight the experience of various organizations and institutions in their efforts to communicate and inform in several languages on topics – science and technology – that are often perceived as distant and arduous by the layman. ==>> Please note that registrations are now closed. It is not necessary to register for this event if you plan to watch it live on http://webcast.cern.ch. Send your questions to the speakers by email to: question@cern.ch

  17. CERN's new safety policy

    CERN Multimedia

    2014-01-01

    The documents below, published on 29 September 2014 on the HSE website, together replace the document SAPOCO 42 as well as Safety Codes A1, A5, A9, A10, which are no longer in force. As from the publication date of these documents any reference made to the document SAPOCO 42 or to Safety Codes A1, A5, A9 and A10 in contractual documents or CERN rules and regulations shall be deemed to constitute a reference to the corresponding provisions of the documents listed below.   "The CERN Safety Policy" "Safety Regulation SR-SO - Responsibilities and organisational structure in matters of Safety at CERN" "General Safety Instruction GSI-SO-1 - Departmental Safety Officer (DSO)" "General Safety Instruction GSI-SO-2 - Territorial Safety Officer (TSO)" "General Safety Instruction GSI-SO-3 - Safety Linkperson (SLP)" "General Safety Instruction GSI-SO-4 - Large Experiment Group Leader In Matters of Safety (LEXGLI...

  18. Kandinsky College Visits CERN

    CERN Multimedia

    CERN Video productions; Angelos Alexopoulos

    2012-01-01

    This video documents the visit of nine senior high school students of the Kandinsky College in Nijmegen (Netherelands) to CERN. The students visited many of CERN's experimental facilities, took part in a Cloud Chamber workshop, attended talks and roundtable discussions of SpacePart12 and worked on the evaluation of the Microcosm exhibition as part of a school inquiry-based research project. The students and their teacher, Paul de Haas (a participant of the High School Teachers 2012 Programme at CERN) were connected with Prof. Christine Kourkoumelis and George Vasileiadis at the University of Athens and learned hands-on how to analyse real physics events, including Higgs-like ones, from the ATLAS experiment at the LHC using the HYPATIA Applet.

  19. Cern Cricket Club

    CERN Multimedia

    Cern Cricket Club

    2014-01-01

      Cern Cricket Club The CERN Cricket Club 2014 season has started earlier than usual, with a game scheduled for the first time ever on Easter Sunday.  Due to repair work for the damage done to the ground because of the “Bosons&More” party at the end of September, all games until June have had to be scheduled away. Net practice, which normally takes place on the ground from mid-April, will not start until mid-June. The club is always looking for new players and newcomers will be made very welcome. Anyone who is interested in joining the club should sign up on our web site: http://cern.ch/Club-Cricket/    

  20. CERN Relay Race

    CERN Multimedia

    2005-01-01

    The CERN Relay Race will take place around the Meyrin site on Wednesday 18 May between 12.15 and 12.35. This year, weather permitting, there will be some new attractions in the start/finish area on the field behind the Main Building. You will be able to: listen to music played by the CERN Jazz Club; buy drinks at the bar organised by the CERN Running Club; buy lunch served directly on the terrace by the restaurant Novae. ATTENTION: concerning traffic, the recommendations are the same as always: If possible, please avoid driving on the site during this 20 minute period. If you do meet runners in your car, please STOP until they all have passed. Thank you for your understanding.

  1. Florida State University superconducting linac

    International Nuclear Information System (INIS)

    As early as the fall of 1977 it was decided that the future research needs of their nuclear structure laboratory required an increase in energy capability to at least 8 MeV per nucleon for the lighter ions, and that these needs could be met by the installation of a 17 MV tandem Van de Graaff accelerator. The chief problem with this proposal was the high cost. It became apparent that a far less expensive option was to construct a linear accelerator to boost the energy from their existing 9 MV tandem. The options open to them among linac boosters were well represented by the room temperature linac at Heidelberg and the superconducting Stony Brook and Argonne systems. By the Spring of 1979 it had been decided that both capital cost and electric power requirements favored a superconducting system. As regards the two superconducting resonator technologies - the Argonne niobium-copper or the Caltech-Stony Brook lead plated copper - the Argonne resonators, though more expensive to construct, had the advantages of more boost per resonator, greater durability of the superconducting surface and less stringent beam bunching requirements. In 1980 pilot funding from the State of Florida enabled the construction of a building addition to house the linac and a new target area, and the setting up of a small, three resonator, test booster. Major funding by the NSF for the laboratory upgrade started in 1984. With these funds they purchased their present helium liquefaction and transfer system and constructed three large cryostats, each housing four Argonne beta = 0.105 resonators and two superconducting solenoids. The last large cryostat was completed and installed on-line early this year and the linac was dedicated on March 20. Nuclear physics experiments using the whole linac began in early June. 4 references, 6 figures, 1 table

  2. BNCT with linac, feasibility study

    International Nuclear Information System (INIS)

    High energy photon beams from Medical Linear Accelerators (linacs) which are used in radiotherapy produce undesirable neutrons, beside the clinically useful electron and photon beams. Neutrons are produced from the photonuclear reaction (γ,n) of high energy photons with high Z-materials which compose the accelerator head. In this paper the possible use of these undesirable neutrons for BNCT is investigated, making use of high energy linacs already installed in hospitals, primarily for high energy electron and photon therapy and applying them in the context of BNCT. The photoneutron components emitted by the accelerator is the source for Monte Carlo simulations of the interactions that take place within the head of a voxel-based phantom. The neutron flux across the phantom head is calculated using different moderator arrangements and different techniques in the aim of increasing the thermal neutron flux at the targeted site. Also, we shall test different configurations of the linac head to maximize the exposure of high-Z materials to the photon beam, including the removal of the flattening filter, so as to boost the photoneutron production in the linac head. Experimental work will be conducted in hospitals to validate the Monte Carlo simulations. To make use of linacs for BNCT will be advantageous in the sense that the setting in a hospital department is much more acceptable by the public than a reactor installation. This will mean less complications regarding patient positioning and movement with respect to the beams, additional patient transportation and management will be more cost effective. (author)

  3. CERN Relay Race

    CERN Document Server

    2008-01-01

    The CERN relay race will take place around the Meyrin site on Thursday 5 June starting at 12:15 p.m. If possible, please avoid driving on the site during this 20-minute period. If you do meet runners while driving your car, please STOP until they have all passed. Thank you for your cooperation. Details on how to register your team for the relay race are given on the Staff Association Bulletin web site. You can access the online registration form at: http://cern.ch/club-running-relay/form.html

  4. The significance of Cern

    CERN Multimedia

    Weisskopf,V

    Le Prof. V.Weisskopf, DG du Cern de 1961 à 1965, est né à Vienne, a fait ses études à Göttingen et a une carrière académique particulièrement riche. Il a travaillé à Berlin, Copenhague et Berlin et est parti aux Etats Unis pour participer au projet Manhattan et était Prof. au MTT jusqu'à 1960. Revenu en Europe, il a été DG du Cern et lui a donné l'impulsion que l'on sait.

  5. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2009-01-01

    Are you running Vista on your new PC – or are you planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual session of this course will take place on 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at mailto:Technical.Training@cern.ch

  6. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    Are you running Vista on your new PC – or are you planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual sessions of this course will take place on 12 December 2008 and 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at mailto:Technical.Training@cern.ch

  7. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    You are running Vista on your new PC – or are planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual sessions of this course will take place on 12 December 2008 and 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at mailto:Technical.Training@cern.ch

  8. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    Are you running Vista on your new PC – or are planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual sessions of this course will take place on 12 December 2008 and 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at Technical.Training@cern.ch

  9. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    You are running Vista on your new PC – or are planning to install it? The Technical Training service is organizing a half-day training on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced using Windows XP. The next bilingual sessions of this course will take place on December 12, 2008 and January 30, 2009. Register using our catalogue : http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at Technical.Training@cern.ch

  10. Poland at CERN

    CERN Multimedia

    CERN Press Office. Geneva

    2000-01-01

    On 17 October 2000, the second Polish industrial and technological exhibition opens at CERN*. The first one was held five years ago and nine of the companies that were present then have come back again this year. Six of those companies were awarded contracts with CERN in 1995. Three Polish officials were present at the Opening Ceremony today: Mrs Malgorzata Kozlowska, Under-secretary of State in the State Committee for Scientific Research, Mr Henryk Ogryczak, Under-secretary of State in Ministry of Economy and Prof. Jerzy Niewodniczanski, President of National Atomic Energy Agency.

  11. Exhibition of the winning pictures from CERN Photowalk 2015 | 4 - 14 April | “Pas Perdus” area

    CERN Multimedia

    2016-01-01

    Twenty photos entered into the “CERN Photowalk 2015: Behind the scenes at the Laboratory” competition will be on display in the “Pas Perdus” area (Buildings 500 and 61) from 4 to 14 April.    The ISOLDE installation as seen by Andrew Hara, one of the photographers who took part in the CERN Photowalk 2015 competition. In September 2015, 19 photographers from all over the world visited CERN, cameras at the ready, to find out what goes on behind the scenes at the Laboratory. They had the opportunity to take photographs of daily life on the CERN site and of facilities including the Linac 4 linear accelerator, the main workshop and ISOLDE. A jury selected the best photos taken at CERN and the top three were entered into the world's biggest physics photography competition, the Global Physics Photowalk, in which eight laboratories participated. The winners of the Global Physics Photowalk can be seen here.

  12. People and things. CERN Courier, Oct 1986, v. 26(8)

    International Nuclear Information System (INIS)

    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. Already acknowledged as the world's most versatile system of particle accelerators, CERN's complex of big machines put on a spectacular performance after the short summer shutdown. On 3 September, the new LEP Injection Linac (LIL) was put through its paces and the ejection line tested in readiness for the next step. The 1986 Dirac Medals of the International Centre for Theoretical Physics, Trieste, Italy, have been awarded to Ybichiro Nambu and Alexander Polyakov for their important contributions to mathematical physics

  13. CERN firemen share their expertise

    CERN Multimedia

    Maximilien Brice

    2002-01-01

    Firemen from local fire brigades have been coming to CERN to learn modern fire-fighting techniques. This apparatus allows the simulation of the spectacular backdraft phenomenon, so firemen training at CERN learn to understand it.

  14. CHINA Continuing cooperation with CERN

    International Nuclear Information System (INIS)

    During a visit to China in July, CERN Director General Carlo Rubbia signed an agreement with the Chinese Academy of Sciences which provides a reciprocal framework for CERN and China to continue and develop their scientific and technical cooperation

  15. CERN Diversity Newsletter - March 2016

    CERN Document Server

    Kaltenhauser, Kristin; CERN. Geneva. HR Department

    2016-01-01

    Quarterly CERN Diversity Newsletter, informing on recent and ongoing diversity activities, and interesting reads, videos and other links related to diversity. Subscribe here: https://diversity.web.cern.ch/2015/07/subscribe-diversity-newsletter

  16. CERN Diversity Newsletter - November 2015

    CERN Document Server

    Kaltenhauser, Kristin; CERN. Geneva. HR Department

    2015-01-01

    Quarterly CERN Diversity Newsletter, informing on recent and ongoing diversity activities, and interesting reads, videos and other links related to diversity. Subscribe here: https://diversity.web.cern.ch/2015/07/subscribe-diversity-newsletter

  17. Une flamme pour le CERN

    CERN Multimedia

    2004-01-01

    For the 50th anniversary of CERN, letters posted from Saint Genis will bear a postmark to celebrate CERN's anniversary. Envelopes are also available from the Saint-Genis-Pouilly (France) post office (3 paragraphs)

  18. RF Plasma modeling of the Linac4 H− ion source

    CERN Document Server

    Mattei, S; Hatayama, A; Lettry, J; Kawamura, Y; Yasumoto, M; Schmitzer, C

    2013-01-01

    This study focuses on the modelling of the ICP RF-plasma in the Linac4 H− ion source currently being constructed at CERN. A self-consistent model of the plasma dynamics with the RF electromagnetic field has been developed by a PIC-MCC method. In this paper, the model is applied to the analysis of a low density plasma discharge initiation, with particular interest on the effect of the external magnetic field on the plasma properties, such as wall loss, electron density and electron energy. The use of a multi-cusp magnetic field effectively limits the wall losses, particularly in the radial direction. Preliminary results however indicate that a reduced heating efficiency results in such a configuration. The effect is possibly due to trapping of electrons in the multi-cusp magnetic field, preventing their continuous acceleration in the azimuthal direction.

  19. WILL I AM visits CERN

    CERN Multimedia

    Noemi Caraban

    2013-01-01

    Will.i.am visited CERN in December 2013, fulfilling a wish he made in a video-link appearance at TEDxCERN earlier that year http://tedxcern.web.cern.ch/video/choral-performance-reach-stars-william. During his visit, he was shown the Antimatter Decelerator, the underground ATLAS experiment cavern and the CERN Control Centre. He also took the opportunity to promote CERN’s beam line for schools competition.

  20. CERN Video News on line

    CERN Document Server

    2003-01-01

    The latest CERN video news is on line. In this issue : an interview with the Director General and reports on the new home for the DELPHI barrel and the CERN firemen's spectacular training programme. There's also a vintage video news clip from 1954. See: www.cern.ch/video or Bulletin web page

  1. Women at CERN

    CERN Multimedia

    2004-01-01

    To mark International Women's Day on 8 March, the Weekly Bulletin has looked at the careers of six female physicists, engineers and administrators working at CERN. A frequent question on the lips of newcomers to CERN as they take a quick look around them is 'But where are the women?' However, while it's true that the Laboratory has never had a huge number of female personnel, a closer look reveals that there are in fact quite a few around. To mark International Women's Day, the Bulletin has interviewed six women working at CERN to find out how they see the Organization, what they do and what they think about their daily working lives. Creating a link 'Maybe because I grew up during World War II, my parents always taught me to respect people of other nationalities, religions, colour, etc., so one thing I have always appreciated about CERN is that it promotes this tolerance and understanding by giving us the great privilege of working side by side with colleagues from many cultures and walks of life.' Pegg...

  2. La Nascita del CERN

    CERN Multimedia

    Fidecaro, Giuseppe

    2004-01-01

    CERN is born on 30 Sep 1954, just after the signature in Paris of a Convention for the creation of an European Center for Nuclear Research. It was a need to recreate a multilateral collaboration to start again scientific Research after the War (2 pages)

  3. Satellite photo of CERN

    CERN Multimedia

    1991-01-01

    This photo from the Landsat5 orbital telescope shows the locations of CERN's Meyrin and Prevessin sites near Geneva on the Swiss-France border. The tunnels housing the LHC and SPS accelerators are also illustrated. Photo credit: US Geological Survey/photo by Jane Doe.

  4. Disney World sur CERN

    CERN Multimedia

    Bieri, P

    1998-01-01

    "'Cela ressemble à un film de James Bond.' Des milliers de curieux se sont rendus, hier, dans le temple genevois de la science ouvert au public. Opération de charme réussie pour le CERN, qu i s'est ainsi refait une image" (1 page)

  5. CERN's future secured

    CERN Multimedia

    2003-01-01

    The CERN Council held its 123rd session on 13 December under the chairmanship of Professor Maurice Bourquin. The election of the next Director General, the Baseline Plan for 2003-2010 and a new status for non-European states were among the items agreed. In addition, the European Investment Bank has agreed a loan of 300 million EUR to complete the LHC.

  6. CERN: LHC magnets

    International Nuclear Information System (INIS)

    With test magnets for CERN's LHC proton-proton collider regularly attaining field strengths which show that 10 Tesla is not forbidden territory, attention turns to why and where quenches happen. If 'training' can be reduced, superconducting magnets become easier to commission

  7. CERN fellows and visitors

    CERN Multimedia

    Penney, R. W.

    1963-01-01

    This article describes the Fellowship and Visitor Programme as it is at present, detailing the various headings under which the visitors come and indicating the methods by which they are chosen. The way in which their work is integrated into the general scientific activity of CERN is discussed briefly.

  8. CERN: 50 and counting

    International Nuclear Information System (INIS)

    Fifty years is a long time in particle physics - and not just because most subatomic particles only exist for tiny fractions of a second. In 1954, the year that CERN was established, the leading high-energy laboratories in the US, and indeed the world, were at Berkeley in California and Brookhaven in New York. Today these two labs - with nine Nobel prizes for discoveries in particle physics between them - have been replaced by Stanford (established in 1962) and Fermilab (1967) as the focal points of high-energy physics in the US. CERN did not reach its current position of strength overnight. In the early years it struggled as US labs dominated the field and beat Europe's new lab to the big discoveries. The tide turned with the detection of weak neutral currents in 1973, and the discovery of the W and Z bosons 10 years later showed that CERN was capable of making truly massive discoveries. Today, completing the Large Hadron Collider (LHC) and its four detectors on schedule and within budget, and then ensuring that they run reliably from 2007 onwards, are CERN's top priorities. (U.K.)

  9. CERN apprenticeship scheme honoured

    CERN Multimedia

    2008-01-01

    Prestigious awards for two apprentices who did their practical training at CERN. Sylvain Heinzen, apprentice physics lab technician at CERN, receiving his award from Pierre-François UNGER, State Councillor responsible for the Federal Department of the Economy and Health. The other award-winner, Cédric Gerber, is on the right of the photo.Among Geneva’s top apprentices who were honoured by the Fondation sociale de l’Union industrielle genevoise (UIG) on 28 October this year, were two CERN apprentices. Electronics technician Cédric Gerber and physics lab technician Sylvain Heinzen both did their four-year sandwich course at CERN, obtaining their professional qualification, the Certificat fédéral de capacité (CFC), in June. On top of that, Cédric Gerber, who had been a particularly outstanding apprentice, received two further distinctions at the CFC awards ceremony - the State Council prize for achieving one of the top-ten o...

  10. Give blood at CERN

    CERN Multimedia

    SC Unit

    2008-01-01

    ACCIDENTS and ILLNESSES don’t take a break! DO SOMETHING AMAZING - GIVE BLOOD! IT’S IN ALL OUR INTERESTS. 30 July 2008 from 9.30 a.m. to 4 p.m. CERN RESTAURANT NOVAE First floor - Salle des Pas Perdus After you have given blood, you are invited to partake of refreshments kindly offered by NOVAE.

  11. CERN CAR CLUB

    CERN Multimedia

    Automobile club

    2009-01-01

    You are cordially invited to the next General Assembly of the CERN Car Club Tuesday 12 January 2010 at 5:45pm Bldg. 593 / room 11 As the end of 2009 is approaching, it is time to think about renewing your subscription. Therefore next time you are on the CERN-Meyrin site or at the Post Office counter don’t forget to fill in the payment slip to continue to be a part of our large family. The fee remains unchanged: 50 CHF. For those of you who are regular users of our equipment and who know of all the advantages that the club is in a position to offer, it seems pointless to give details, we are sure that many of you have made use of them and are satisfied. We remind you everyone working on CERN site is entitled to become a member of our club, this includes industrial support personnel and staff of companies which have a contract with CERN. If you are not yet a member, come and visit us! We will be happy to welcome you and show you the facilities, or you can visit our web site. The use of the club&...

  12. A heatwave at CERN

    CERN Multimedia

    Anaïs Schaeffer

    2011-01-01

    It's getting hot in Buildings 201 and 860, over-heating even... But no reason to panic! We're talking about the superheated water boilers of CERN's two heating plants, which heat all the buildings on the Meyrin and Prévessin sites.   View of the three boilers and the control centre of the Meyrin heating plant. CERN's two heating plants each comprise three gas* boilers, with generators of 15 MW in the case of Meyrin and 5 MW in the case of Prévessin. Both inject pressurised water, superheated to 125 degrees, into several kilometres of pipes, 22 km on the Meyrin site and 5 km in Prévessin. "A single boiler is sufficient most of the time but a second kicks in automatically during very cold weather, and a third is there on stand-by," explains Christophe Martel, head of the GS Department section responsible for CERN's heating and air-conditioning systems. All of CERN's buildings have a sub-station that receives the superheated water from the boilers an...

  13. DESY greets CERN

    CERN Multimedia

    Helmut Dosch, Chairman of the DESY Board of Directors, continues the series of occasional exchanges between CERN and other laboratories world-wide. As part of this exchange, CERN Director-General Rolf Heuer wrote a message in DESY inForm. Helmut Dosch took over from Albrecht Wagner in March 2009. You may think that the connections between CERN and DESY are obvious – particle physics labs with record-breaking accelerators and users from all around the world trying to solve mankind’s great mysteries. We even exchanged a few Directors. But did you know that there are similarities that are much closer to home – for example that both labs have names for their staff in the host language that are untranslatable into English? You are CERNoises and CERNois, we are DESYanerinnen and DESYaner. And in the end it’s the people it all comes down to. We at DESY admire the resourcefulness, enthusiasm, dedication and perseverance with which you at CERN have designed, built, started ...

  14. Muse at CERN

    CERN Multimedia

    CERN Bulletin

    2016-01-01

    On 19 July, the world-famous, English rock band, Muse, visited CERN before taking centre-stage at Nyon’s Paléo Festival. They toured some of CERN’s installations, including the Synchrocyclotron and the Microcosm exhibition, and also looked in on CMS and the Antimatter Factory.    

  15. Bhutan at CERN

    CERN Multimedia

    2002-01-01

    On Tuesday 12 March, CERN received an extraordinary visitor, a very great representative of a very tiny country. His Royal Highness, Dasho Jigme Khesar Namgyal Wangchuk, Crown Prince of Bhutan, visited the assembly site of CMS. For those whose geographical knowledge is weak, Bhutan is a tiny bhuddist kingdom, nestled in the Himalayas and surrounded by two giants, India and China.

  16. The CERN Accelerator School

    CERN Multimedia

    2016-01-01

    Introduction to accelerator physics The CERN Accelerator School: Introduction to Accelerator Physics, which should have taken place in Istanbul, Turkey, later this year has now been relocated to Budapest, Hungary.  Further details regarding the new hotel and dates will be made available as soon as possible on a new Indico site at the end of May.

  17. CERN celebrates another milestone

    CERN Multimedia

    2007-01-01

    "CERN (the European Organization for Nuclear Research) recently celebrated the lowering of the gigantic toroid magnet end-cap, using an EOT crane, onto the cavern floor. After a two-hour operation, the installation teams from ATLAS, PH-ATI and TS could finally breath a sigh of relief." (1/2 page)

  18. Improved safety at CERN

    CERN Document Server

    2006-01-01

    As announced in Weekly Bulletin No. 43/2006, a new approach to the implementation of Safety at CERN has been decided, which required taking some managerial decisions. The guidelines of the new approach are described in the document 'New approach to Safety implementation at CERN', which also summarizes the main managerial decisions I have taken to strengthen compliance with the CERN Safety policy and Rules. To this end I have also reviewed the mandates of the Safety Commission and the Safety Policy Committee (SAPOCO). Some details of the document 'Safety Policy at CERN' (also known as SAPOCO42) have been modified accordingly; its essential principles, unchanged, remain the basis for the safety policy of the Organisation. I would also like to inform you that I have appointed Dr M. Bona as the new Head of the Safety Commission until 31.12.2008, and that I will proceed soon to the appointment of the members of the new Safety Policy Committee. All members of the personnel are deemed to have taken note of the d...

  19. CERN in the blogosphere

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    CERN communicates with the outside world in many different ways – websites, publications, through the media and via twitter to name but a few. As of January, CERN has a new way of engaging with the world: a CERN institutional blog.   CERN’s blog was launched on 10 January on the Quantum Diaries platform, adding a new strand to a well-established site. Quantum Diaries was launched in 2005 as an initiative for the World Year of Physics promoted by the InterAction collaboration, a group that brings together the communication offices of some of the world’s major particle physics labs and organisations. The launch of institutional blogs from Brookhaven, CERN, Fermilab and TRIUMF has added an extra dimension to Quantum Diaries. Visits to the site jumped to 3000 per day with the addition of the institutional blogs, and that number is already growing. CERN’s first post explains one of the reasons we’re doing this. With the incredible thirst for informati...

  20. CERN in detail

    CERN Multimedia

    Laëtitia Pedroso

    2010-01-01

    Before, you had to go on the TPG website to find a tram-route, use Google Maps to see an aerial photo of CERN, and look for CERN buildings on map.web.cern.ch. Now, that's ancient history, with a new Geographical Information System (GIS) Portal set up by the Design Office and Patrimony Service (GS/SEM/DOP).  It's a one-stop-shop for all this information and much more.   A screenshot of the GIS Portal. Over the past few days, you might have noticed the new interface called MAPSearch that pops up when you make a building search using the Building and Roads field on the CERN homepage. This is a simplified version of the new GIS web Portal, a project on which the GS Department's Design Office and Patrimony Service has been working since January 2010. "In today's informatics age, we need to respond ever more quickly to increasing numbers of specific user requests," explains Project Leader Youri Robert. This is more than just a new release of an old tool, it's a completely n...

  1. The CERN Accelerator School

    CERN Document Server

    2016-01-01

      Introduction to accelerator physics This course will take place in Istanbul, Turkey, from 18 to 30 September 2016. It is now open for registration, and further information can be found here: http://cas.web.cern.ch/cas/Turkey-2016/Turkey-advert.html

  2. Neutrinos at CERN

    International Nuclear Information System (INIS)

    CERN's long and distinguished neutrino tradition began in 1958 at the then new 500 MeV synchrocyclotron (SC) with the first observation of the decay of a charged pion into an electron and a neutrino. At that time, the first ideas on the special (vector/axial vector) structure of the weak interactions had been put forward by Feynman and Gell-Mann and by Marshak and Sudarshan, but the continual non-observation of that charged pion decay was holding up progress. This decay is only one part in ten thousand, and is masked by the dominant muon-neutrino channel. A special telescope was built to pick up the high energy electrons from the pion decay. In 1962 came another SC neutrino success, with the first measurement of the decay of a charged pion into a neutral one, with emission of an electron and a neutrino. Meanwhile the main thrust of CERN's neutrino effort was taking shape at the PS. By the close of 1960, CERN had decided to attack neutrino physics using several detectors - a 1m heavy liquid bubble chamber from Andre Lagarrigue's team in Paris, a CERN 1 m heavy liquid bubble chamber, and a hybrid chamber/counter from a group led by Helmut Faissner

  3. Cern Golf Club

    CERN Multimedia

    Cern Golf Club

    2014-01-01

      The Cern Golf Club   Members are here with invited to the: Annual General Meeting which takes place Wednesday evening the 5th February 2014 at 18h00 in the Conference room in bldg 13-2-005. A committee member will be at CERN gate B, 17h50 and accompany “external” CGC members to the conference room. Agenda: 1. President’s report 2. Treasurer’s report 3. Election of the Committee for 2014 4. Election of  Auditors 5. Draft schedule for 2014 CGC-competitions and other events 6. “Corpo” report    7. Proposals and any other business Please forward any proposals (to any of the committee members) you have, including candidature for the 2014 committee minimum three days in advance before the meeting.      Cern Golf Club   Les membres de club de golf de CERN sont invités à l’Assemblée Géné...

  4. Cern Women's Club

    CERN Multimedia

    Club des cernoises

    2013-01-01

    Christmas SaleTuesday 26th November 2013, from 9:00 to 11:00 Main Building 60 Ground Floor Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch.

  5. CERN-Russian meeting

    CERN Multimedia

    1974-01-01

    (front) V.P Dzhelepov (Dubna) (2nd row) A. Serov (State Committee), I.G. Morozov (Vice-Minister for Atomic Energy), V.S. Kaftanov (ITEP) (back) A. Derevschikov, R. Anthoine, V. Savrin, S. Nurushev, E. Gabathuler, M. Steuer (see CERN Courier of August 1974)

  6. CERN's Guardian Angels

    CERN Multimedia

    2002-01-01

    Any trouble at CERN? The Technical Control Room operates the entire technical infrastructure of CERN every day, all year long. They deal with problems that go from simple water leaks to devastating power cuts.   The Technical Control Room with Kenneth Olesen and Mark Harvey, minutes before their starting time. This big room is probably the liveliest at CERN, since there's always someone there, everyday, all year long. Laurent Randot and Eric Lienard working in the Technical Control Room at CERN in building 212. They've started at 7 a.m. and today has been a relatively quiet day. There have been some microcuts in the electric net because of the wind. But these have been repaired rather quickly... The relief: It's 2.30 p.m. Time for Laurent Randot and Eric Lienard to show their colleagues Mark Harvey and Kenneth Olesen what has been going on during the morning. They are the next TCR team of the day. Mark Harvey and Kenneth Olesen start their working day. They will work until 11p.m., when another team wil...

  7. CERN CROQUET CLUB

    CERN Multimedia

    Cern Croquet Club

    2015-01-01

    CERN CROQUET CLUB   Prévessin site Introduction to croquet, and barbecue, at the club from 18.00 on Thursday 30th April. Please Email norferga@orange.fr by 28th April if you are coming.  Please wear flat-soled shoes. Looking forward to seeing. Norman Eatough, President

  8. Induced radioactivity at CERN

    CERN Multimedia

    1970-01-01

    A description of some of the problems and some of the advantages associated with the phenomenon of induced radioactivity at accelerator centres such as CERN. The author has worked in this field for several years and has recently written a book 'Induced Radioactivity' published by North-Holland.

  9. Tragic loss at CERN

    CERN Multimedia

    CERN Ski Club

    2015-01-01

    Tragic loss at CERN The CERN community is mourning the tragic loss of two members of the CERN Ski Club. On Sunday, April 12, an avalanche buried four out of five skiers, taking part in a ski touring in the region of the Becs de Bosson in Valais (CH). The fifth skier, who had not been buried in the snow,  courageously managed to save two of the skiers, but Hervé Milcent, 49 years, federal ski instructor, and Mattieu Cattin, 33 years, were buried under two to three meters of snow, far down the avalanche slope, and did not survive, despite the fast arrival of the mountain rescue. In its 40 years of existence, the CERN Ski Club, one of the biggest in the Geneva area, has never been confronted with such a tragedy. The passing of Hervé and Matthieu has deeply shocked and saddened all volunteers of the Club as well as the entire alpine community. The ski touring section of the club would like to honour its friend Hervé, who joined the club in 1998. In 2003 he became res...

  10. CERN SHOP CHRISTMAS SALE

    CERN Multimedia

    Visits & Exhibition Service

    2000-01-01

    Looking for Christmas present ideas? Come to the Reception Shop Special Stand in Meyrin, Main Building, ground floor, from Tuesday 12 to Thursday 14 December from 10.00 to 16.00.   Sweat-shirt col zippé, grey, blue, black (M, L, XL) 30.- Sweat-shirt col polo, grey, collar blue (M, L, XL) 30.- T-shirt, black, (M, L, XL) 15.- WWW T-shirt, white, bordeau (M, L, XL) 15.- CERN silk tie (3 colours) 33.- Fancy silk tie (blue, bordeau 25.- Silk scarf (blue, red, yellow) 35.- Swiss army knife with CERN logo 25.- New model of CERN watch 25.- New CERN baseball cap 10.- Antimatter (English/anglais) 30.- The Search for Infinity (French, Italian, English,) 35.- Auf der Suche nach dem Unendlichen 45.- If you miss this special occasion, the articles are also available at the Reception Shop in Building 33 from Monday to Saturday between 08.30 and 17.30 hrs (Shop will be closed at 12.00 on 22.12.).

  11. CERN Women's club

    CERN Multimedia

    CERN Women's club

    2010-01-01

    The Welcome Center The Welcome Center website for CERN newcomers – and everyone else at CERN – has celebrated its first anniversary in operation. It began as a project to organize all the various information available at CERN into an easy to use site, with advice to help you make the most of your time here. It continues to be updated as new information becomes available. Lori Hakulinen and her helpers offer to meet with anyone who has questions. They can advise you on weekend activities, local restaurants and where to buy hard to find items or some of your favorite things from home, in addition to all of the practicalities you need to know, such as how to find housing or have a telephone installed, where to take language classes and much, much more. It’s all listed at: http://cern.ch/club-cwc-newcomers In general, meetings take place the first and third Thursdays in the month at Restaurant No. 1 in the Children’s Dining Room. (Please consult the Homepage for schedu...

  12. CERN Cricket Club

    CERN Multimedia

    Staff Association

    2014-01-01

    CERN CRICKET CLUB   The CERN Cricket Club 2014 season has been a good one so far with the team qualifying for the Swiss Cup semi-finals, with home advantage on the Prevessin ground on Sunday, August 24th. Their opponents will only be known the day before when the final game in the Eastern Division is played.  The CERN ground hasn’t quite recovered from the Bosons&More party last year, the wet weather making it impossible to roll the ground, but the new, wider strip is a big improvement. Net practice eventually started in late July, which is probably why the results at the beginning of the season weren’t so good. As match reports are too long to be included in the weekly bulletin, the full reports and the schedule can be found under “Matches (Fixtures, results, reports)” on the Cricket Club web site at http://cern.ch/Club-Cricket/    Anyone interested in playing cricket is welcome to join us at net practice, which takes pla...

  13. CERN and space science

    CERN Multimedia

    2009-01-01

    The connection between CERN and space is tangible this week, as former CERN Fellow and ESA astronaut Christer Fuglesang begins the second week of his mission on space shuttle flight STS-128. I had the pleasure to meet Christer back in October 2008 at an IEEE symposium in Dresden, and he asked me whether we could give him something related to CERN for his official flight kit. We thought of caps and tee-shirts, but in the end decided to give him a neutralino as a symbol of the link between particle physics and the science of the Universe. Neutralinos are theoretical particles that the LHC will be looking for, and if they exist, they’re strong candidates for the Universe’s dark matter. Christer’s neutralino is just a model, of course, escaped from the particle zoo, but what better symbol of the connectedness of science? Christer Fuglesang is not the only link CERN has with the space shuttle programme. We’ve recently learned that...

  14. CERN Housing Service: Hostel

    CERN Multimedia

    CERN Housing Service

    2004-01-01

    Arrangements for the end of the year closure Hostel on the CERN site During the closure of CERN for Christmas and the New Year, the hostel will be closed from midday on Friday 17 December 2004 until Monday 3 January 2005 at 8:00. All accounts must be settled and room keys returned to the Reception before 10:00 on Friday 17 December 2004. Hostel in St. Genis-Pouilly The wing reserved for CERN will be closed from midday on Friday 17 December 2004 until Monday 3 January 2005 at 8:00. Anyone with no alternative but to stay in the Hostel during this period can be accommodated in another part of the building. The people concerned must make the appropriate reservations in person at the Reception of the St.-Genis Hostel, as far in advance as possible and in any case no later than Friday 10 December 2004. The total length of stay during the two weeks in question must be paid for in advance, no later than Friday10 December 2004. All reservations remaining unpaid after this date will be cancelled. Reception: CERN ...

  15. Site Layout of the proposed new Hadrons' Injector Chain at CERN

    CERN Document Server

    Baldy, J L; Evans, L; Garoby, R; Gerigk, F; Lindroos, M; López-Hernandez, L A; Maury, S; Poehler, M; Silari, M; Vretenar, M

    2008-01-01

    The replacement of almost all the LHC injector complex on the Meyrin-site of CERN (Linac2, PSB and PS) is planned within the next 10 years. The layout foreseen for the new accelerators is described in this paper, together with its compatibility with the existing experimental physics facilities. These machines can, after upgrade, supply with high beam power future physics facilities for radioactive ions and/or neutrinos. Their possible layout is also sketched in this document.

  16. Beam tests on a proton linac booster for hadron therapy

    CERN Document Server

    De Martinis, C; Berra, P; Birattari, C; Calabretta, L; Crandall, K; Giove, D; Masullo, M R; Mauri, M; Rosso, E; Rovelli, A; Serafini, L; Szeless, Balázs; Toet, D Z; Vaccaro, Vittorio G; Weiss, M; Zennaro, R

    2002-01-01

    LIBO is a 3 GHz modular side-coupled proton linac booster designed to deliver beam energies up to 200 MeV, as required for the therapy of deep seated tumours. The injected beam of 50 to 70 MeV is produced by a cyclotron like those in several hospitals and research institutes. A full-scale prototype of the first module with an input/output energy of 62/74 MeV, respectively, was designed and built in 1999 and 2000. Full power RF tests were carried out successfully at CERN using a test facility at LIL at the end of the year 2000. In order to prove the feasibility of the acceleration process, an experimental setup with this module was installed at the INFN Laboratorio Nazionale del Sud (LNS) in Catania during 2001. The superconducting cyclotron provided the 62 MeV test beam. A compact solid-state RF modulator with a 4 MW klystron, made available by IBA-Scanditronix, was put into operation to power the linac. In this paper the main features of the accelerator are reviewed and the experimental results obtained duri...

  17. Status of the Superconducting Proton Linac (SPL) Cryo-Module

    CERN Document Server

    Parma, V; Capatina, O; Chambrillon, J; Montesinos, E; Schirm, K; Vande Craen, A; Vandoni, G; Van Weelderen, R

    2014-01-01

    The Superconducting Proton Linac (SPL) is an R&D effort conducted by CERN in partnership with other international laboratories, aimed at developing key technologies for the construction of a multi-megawatt proton linac based on state-of-the-art SRF technology. Such an accelerator could serve as a driver in new physics facilities for neutrinos and/or radioactive ion beams [1]. Amongst the main objectives of this effort, are the development of 704 MHz bulk niobium beta=1 elliptical cavities (operating at 2 K and providing an accelerating gradient of 25 MV/m) and the test of a string of cavities integrated in a machine-type cryo-module. In an initial phase, only four out of the eight cavities of the SPL cryo-module will be tested in a half-length cryo-module developed for this purpose, which nonetheless preserves the main features of the full size module. This paper presents the final design of the cryo-module and the status of the construction of the main cryostat parts. Preliminary plans for the assembly a...

  18. Linac4 45 keV Proton Beam Measurements

    CERN Document Server

    Bellodi, G; Hein, L M; Lallement, J-B; Lombardi, A M; Midttun, O; Scrivens, R; Posocco, P A

    2013-01-01

    Linac4 is a 160 MeV normal-conducting H- linear accelerator, which will replace the 50 MeV proton Linac2 as injector for the CERN proton complex. Commissioning of the low energy part - comprising the H - source, a 45 keV Low Energy Beam Transport line (LEBT), a 3 MeV Radiofrequency Quadrupole (RFQ) and a Medium Energy Beam Transport (MEBT) - will start in fall 2012 on a dedicated test stand installation. In preparation to this, preliminary measurements were taken using a 45 keV proton source and a temporary LEBT setup, with the aim of characterising the output beam by comparison with the predictions of simulations. At the same time this allowed a first verification of the functionalities of diagnostics instrumentation and acquisition software tools. Measurements of beam profile, emittance and intensity were taken in three different setups: right after the source, after the first and after the second LEBT solenoids respectively. Particle distributions were reconstructed from emittance scan...

  19. first tank of Linac 1

    CERN Multimedia

    This was the first tank of the linear accelerator Linac1, the injection system for the Proton Synchrotron, It ran for 34 years (1958 - 1992). Protons entered at the far end and were accelerated between the copper drift tubes by an oscillating electromagnetic field. The field flipped 200 million times a second (200 MHz) so the protons spent 5 nanoseconds crossing a drift tube and a gap. Moving down the tank, the tubes and gaps had to get longer as the protons gained speed. The tank accelerated protons from 500 KeV to 10 MeV. Linac1 was also used to accelerate deutrons and alpha particles for the Intersecting Storage Rings and oxygen and sulpher ions for the Super Proton Synchrotron heavy ion programme.

  20. CERN HEALTH INSURANCE SCHEME (CHIS)

    CERN Document Server

    HR Department

    2002-01-01

    List of benefits for 2002 The CHIS list of benefits for 2002 is now available from the HR Division Website (under 'general information'). We wish to draw your attention to the fact that the copies of this list available at the CERN UNIQA Office are intended ONLY for CERN pensioners. CERN staff members are therefore kindly requested to print this list themselves from the Web. English version HERE We would like to take this opportunity to remind staff members that they should obtain medical expenses claim forms from their divisional secretariat and NOT from the CERN UNIQA Office, which has a limited supply intended for CERN pensioners ONLY. Human Resources Division Tel: 73635

  1. Harmonic Analysis of Linac Alignment

    CERN Document Server

    McCrady, Rodney C

    2005-01-01

    We have analyzed the requirements on alignment of the focusing elements (quadrupole doublets) in the Los Alamos Neutron Science Center (LANSCE) side coupled linac. The analysis is performed in terms of harmonics of the quardrupole spacing. This allows us to determine the effect of intentional deviations from a straight line, such as following the curvature of the Earth, and of unintentional deviations introduced by measurement and alignment errors. Results are compared to measured positions of the doublets.

  2. Linacs for medical and industrial applications

    International Nuclear Information System (INIS)

    Linear accelerators for medical and industrial applications have become an important commercial business. Microwave electron linacs for cancer radiation therapy and high-energy industrial radiography form the bulk of this market, but these, as well as induction linacs, are now being offered for radiation processing applications such as sterilization of disposable medical products, food preservation and material modifications. The radio frequency quadrupole (RFQ) linac has now made the ion linac also practical for commercial applications in medicine and industry, including radiation therapy, isotope production, neutron production, materials modification, and energy transfer processes. Ion linacs for several of these applications will soon be commercially available. The market for both ion and electron linacs is expected to significantly grow in several exciting and important areas

  3. CERN & Society launches donation portal

    CERN Multimedia

    Cian O'Luanaigh

    2014-01-01

    The CERN & Society programme brings together projects in the areas of education and outreach, innovation and knowledge exchange, and culture and arts, that spread the CERN spirit of scientific curiosity for the inspiration and benefit of society. Today, CERN & Society is launching its "giving" website – a portal to allow donors to contribute to various projects and forge new relationships with CERN.   "The CERN & Society initiative in its embryonic form began almost three years ago, with the feeling that the laboratory could play a bigger role for the benefit of society," says Matteo Castoldi, Head of the CERN Development Office, who, with his team, is seeking supporters and ambassadors for the CERN & Society initiative. "The concept is not completely new – in some sense it is embedded in CERN’s DNA, as the laboratory helps society by creating knowledge and new technologies – but we would like to d...

  4. Diagnostic expert system in the PF LINAC

    International Nuclear Information System (INIS)

    A prototype diagnostic expert system (ES) was developed for the Photon Factory 2.5-GeV electron/positron LINAC injector system. The ES has been on-lined with the conventional linac computer network for receiving real data. This project was undertaken in an attempt to reduce the linac operator's mental workload, diagnosis duties, and to explore Artificial Intelligence (AI) technologies. The outlook for ES and its problems, and what has been achieved are outlined in this presentation. (author)

  5. Linac-LHC EP Collider Options

    CERN Document Server

    Zimmermann, F; Bordry, Frederick; Braun, H H; Brüning, Oliver Sim; Çiftçi, A K; Chattopadhyay, S; Dainton, J B; de Roeck, A; Eide, A; Garoby, R; Holzer, B J; Klein, M; Linnecar, T; Mess, K H; Osborne, J; Rinolfi, L; Schulte, D; Sultansoy, S; Tomás, R; Tückmantel, Joachim; Vivoli, A; Willeke, F J

    2008-01-01

    We describe various parameter scenarios for a ring-linac ep collider based on LHC and an independent electron linac. Luminosities between $10^{31}$ and $10^{33} cm^{-2}s^{-1}$ can be achieved with a s.c. linac, operated either in pulsed or in cw mode, with optional recirculation, at a total electric wallplug power of order 20 MW. Higher luminosities, of several $10^{33} cm^{-2}s^{-1}$ can be reached by investing more electric power or by energy recovery. Finally, merits of a linac-ring ep collider are discussed.

  6. Status of the RFI Linac Prototype

    CERN Document Server

    Swenson, D A

    2004-01-01

    A prototype of the Rf Focused Interdigital (RFI) linac structure is currently under construction at Linac Systems. The RFI linac structure is basically an interdigital (or Wideröe) linac structure with rf quadrupole focusing incorporated into each drift tube. The 200 MHz RFI prototype, consisting of a short RFQ linac followed by a short RFI linac, will accelerate a 20 mA beam of protons from an injection energy of 25 keV to an output energy of 2.50 MeV in a total linac structure length of 1.44 meters. The linac structures are designed for continuous (cw) operation, and will be tested initially at a 33% duty factor. The peak structure power of 66 kW and peak beam power of 50 kW will be supplied by a 144 kW, 33% duty rf power system. A microwave ion source will supply the proton beam and an articulated Einzel lens will steer and focus the beam into the RFQ aperture. The mechanical design of the linac structures will be presented, the calculated performance will be described, the status of the components will b...

  7. Dual mode medical Linac development at SAMEER

    International Nuclear Information System (INIS)

    SAMEER has developed a 6 MV Oncology machine. These types of machines are already tested and treating patients at Head and Neck Cancer Institute, Indore and Adyar Cancer Hospital at Chennai. Two more such machines are in the process of commissioning at Amravati Cancer Foundation, Amravati and B K L Walawalkar Hospital, Dervan. For treating malignant tumors, high energy X-rays are required and for treatment of skin cancer electrons are used. Therefore, to enhance the present low energy radiotherapy linac technology at SAMEER, a dual photon energy linac capable of giving 6 and 15 MV photons and multiple electron energies (6, 8, 10, 12, 14, 16 and 18 MeV) for treatment is being developed indigenously. The prototype of a 15 MeV linac is already developed and tested at SAMEER. The sub-assemblies for the dual mode medical linac like gridded electron gun and target is designed and tested. A linac tube with a detuning plunger or energy switch is designed and assembled. The linac is tuned and tested at low power. The measured parameters are given. Outgassing of linac tube was carried out at a temperature of 250 C. The vacuum achieved after baking is ∼10-10 mbar. The linac tube is now integrated on the gantry head for high power testing. This paper will discuss the design, experimental measurement results and vacuum processing aspects of the linac tube. (author)

  8. France at CERN

    CERN Multimedia

    2005-01-01

    From 04 to 06 october 2005 Administration Building Bldg 60/61 - ground and 1st floor 09:00 - 17:30   Thirty-two companies will present their latest technology at the "France at CERN" exhibition. French industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: mechanical engineering, electrical engineering, electronics, data processing, various supplies, civil engineering and buildings, and vacuum and low temperature technology. The exhibition is organised by UBIFRANCE, the French Committee for Trade Events Abroad.  You will find below : the list of exhibitors.   A detailed programme will be available in due course at : your Departmental secretariat, the reception information desk, Building 33, the exhibition itself.   A detailed list of the firms involved is already available under the following FI link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm     LIST OF EXHIBITORS AIR LIQUIDE DTA ALSTOM...

  9. France at CERN

    CERN Multimedia

    2005-01-01

    From 04 to 06 october 2005 Administration Building Bldg 60/61 - ground and 1st floor 09:00 - 17:30   Thirty-two companies will present their latest technology at the "France at CERN" exhibition. French industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: mechanical engineering, electrical engineering, electronics, data processing, various supplies, civil engineering and buildings, and vacuum and low temperature technology. The exhibition is organised by UBIFRANCE, the French Committee for Trade Events Abroad.  You will find below : the list of exhibitors.   A detailed programme will be available in due course at : your Departmental secretariat, the reception information desk, Building 33, the exhibition itself.   A detailed list of the firms involved is already available under the following FI link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm     LIST OF EXHIBITORS AIR LIQUIDE DTA ALSTO...

  10. CERN School of Computing

    CERN Multimedia

    2007-01-01

    The 2007 CERN School of Computing, organised by CERN in collaboration with the University of Split (FESB) will be held from 20 to 31 August 2007 in Dubrovnik, Croatia. It is aimed at postgraduate students and research workers with a few years' experience in scientific physics, computing or related fields. Special themes this year are: GRID Technologies: The Grid track delivers unique theoretical and hands-on education on some of the most advanced GRID topics; Software Technologies: The Software track addresses some of the most relevant modern techniques and tools for large scale distributed software development and handling as well as for computer security; Physics Computing: The Physics Computing track focuses on informatics topics specific to the HEP community. After setting-the-scene lectures, it addresses data acquisition and ROOT. Grants from the European Union Framework Programme 6 (FP6) are available to participants to cover part or all of the cost of the School. More information can be found at...

  11. ERC rewards CERN researchers

    CERN Multimedia

    Rosaria Marraffino

    2015-01-01

    The European Research Council (ERC) has awarded starting grants to Magdalena Kowalska, a member of the ISOLDE physics team, and Claude Duhr, CERN Theory Division. The funding will enable them to build their own research teams at CERN, engaging postdocs and PhD students.   Magdalena Kowalska and Claude Duhr. The ERC fosters scientific excellence in Europe through competitive funding. Its grants are awarded to projects headed by researchers – both beginning-of-career and established – via an open, peer-reviewed competition. In December 2014, Magdalena Kowalska and Claude Duhr were awarded grants to pursue research in ultra-sensitive nuclear magnetic resonance (NMR) in liquids and mathematical structures in scattering amplitudes, respectively. “Our research project aims to apply an ultra-sensitive NMR technique using radioisotopes to liquids in order to study the interaction of metal ions with biological molecules such as proteins, DNA or RNA,” says Mag...

  12. ITALY AT CERN

    CERN Multimedia

    23 - 26 June 2003 Main Building Bldg 60 - ground and 1st floor 09.00 hrs - 17.30 hrs Twenty-four companies will present their latest technology at the "Italy at CERN" exhibition. The Italian industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: cryogenics and vacuum technologies, electric power and power electronics, mechanical components, small and precision machined mechanical components, engineering, industrial plants, industrial machinery, automation, telecommunication, instrumentation, data processing and electronics. The exhibition is being organised by the INFN of Padova. There follows : - the list of exhibitors. A detailed programme will be available in due course at : - your Divisional secretariat, - the exhibition, - on the SPL homepage http://spl-div.web.cern.ch/spl-div/member_states/exhibitions_visits.htm LIST OF EXHIBITORS 1 Aerimpianti Spa13 Europa Metalli - LMI spa 2 AERSAT Spa14 FBM ICOSS srl 3 Andalo' Gianni Srl15 Finsys...

  13. ITALY AT CERN

    CERN Multimedia

    2003-01-01

    23 - 26 June 2003 Main Building Bldg 60 - ground and 1st floor 09.30 hrs - 17.30 hrs Twenty-four companies will present their latest technology at the "Italy at CERN" exhibition. The Italian industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: cryogenics and vacuum technologies, electric power and power electronics, mechanical components, small and precision machined mechanical components, engineering, industrial plants, industrial machinery, automation, telecommunication, instrumentation, data processing and electronics. The exhibition is being organised by the INFN of Padova. There follows: - the list of exhibitors. A detailed programme will be available in due course: - from your Divisional secretariat, - at the exhibition, - on the SPL homepage http://spl-div.web.cern.ch/spl-div/member_states/exhibitions_visits.htm LISTE DES EXPOSANTS / LIST OF EXHIBITORS 1 Aerimpianti Spa13 Europa Metalli - LMI spa 2 AERSAT Spa14 FBM ICOSS srl 3 Anda...

  14. Italy at CERN

    CERN Multimedia

    Caroline Laignel

    2005-01-01

    15 - 17 November 2005 Main Building Bldg 60 - ground and 1st floor 09:00 - 17:30 Twenty-six companies will present their latest technology at the "Italy at CERN" exhibition. Italian industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: electrical engineering, electronics, logistics, mechanical engineering, vacuum and low-temperature technology.   The exhibition is being organised by the INFN in Padua. The exhibitors are listed below.   A detailed programme will be available in due course : from your Departmental secretariat, at the exhibition, on the FI homepage http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS  Ansaldo Superconduttori Spa CAEN Spa CECOM Snc Consorzio Canavese Export CPE Italia Spa Criotec Impianti Srl CTE Sistemi Srl Carpenteria S. Antonio Spa E.E.I. Equipaggiamenti Elettronici Industriali Elettronica Conduttori Srl Goma Elettronica Spa ICAR Spa Intercond Spa Keno...

  15. CERN Courier goes digital

    CERN Multimedia

    Christine Sutton, CERN Courier editor

    2013-01-01

    The January/February 2013 issue of the CERN Courier offers a new way to access the content – the first digital edition of the magazine.   The CERN Courier dates back to August 1959, when the first issue appeared, consisting of 8 black-and-white pages. Since then it has seen many changes in design and layout, leading to the current full-colour editions of more than 50 pages on average. It went on the web for the first time in October 1998, when IOP Publishing took over the production work. Now, we have taken another step forward with a digital edition that provides yet another means to access the content beyond the web and print editions, which continue as before. To download the digital edition, click here. To sign up to the new issue alert, please visit: http://cerncourier.com/cws/sign-up.

  16. CERN Heart Days

    CERN Multimedia

    2003-01-01

    14 & 15 OCTOBER 2003 The Medical Service and the Fire Brigade invite everyone working at CERN to participate in the above event. INFIRMARY 9 am to 16.30 pm Building 57, ground floor No need to book HEALTHY HEART? Evaluation of personal cardiac risks through the monitoring of: Blood pressure Cholesterol and sugar levels Body Mass Index ... and more Leaflets, information and advice concerning cardiac issues FIRE BRIGADE 9 to 12am - Building 65 Please book (limited to 15 people/day) FIRST AID COURSES What to do in a Cardiac Emergency (3 h. duration) Places are limited and on reservation only (15 people/day). To book, e-mail the Medical Services on: service.medical@cern.ch

  17. CERN Heart Days

    CERN Multimedia

    2003-01-01

    14 & 15 OCTOBER 2003 The Medical Service and the Fire Brigade invite everyone working at CERN to participate in the above event. INFIRMARY 9 am to 16.30 pm Building 57, ground floor HEALTHY HEART? ♥ Evaluation of personal cardiac risks through the monitoring of: • Blood pressure • Cholesterol and sugar levels • Body Mass Index ... and more ♥ Leaflets, information and advice concerning cardiac issues FIRE BRIGADE 9 to 12am Building 65 FIRST AID COURSES ♥ What to do in a Cardiac Emergency (3 h duration) Places are limited and on reservation only (15 people / day) To book, E-mail the Medical Services on: service.medical@cern.ch

  18. CERN Heart Days

    CERN Multimedia

    2003-01-01

    14 & 15 OCTOBER 2003 The Medical Service and the Fire Brigade invite everyone working at CERN to participate in the above event. INFIRMARY 9 am to 16.30 pm Building 57, ground floor no need to book HEALTHY HEART? • Evaluation of personal cardiac risks through the monitoring of: Blood pressure Cholesterol and sugar levels Body Mass Index ... and more • Leaflets, information and advice concerning cardiac issues FIRE BRIGADE 9 to 12 am - Building 65 Please book (limited to 15 people/day) FIRST AID COURSES • What to do in a Cardiac Emergency (3 h. duration) Places are limited and on reservation only (15 people/day). To book, e-mail the Medical Services on: service.medical@cern.ch

  19. Germany at CERN

    CERN Multimedia

    C. Laignel / FI-DI

    2005-01-01

    From 1 to 3 march 2005 Administration Building Bldg 60/61 - ground and 1st floor 09:30 - 17:30 Twenty eight companies will present their latest technology at the "Germany at CERN" exhibition. German industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: mechanical engineering, particle detectors, electrical engineering, electronics, data processing, radiation protection and vacuum and low temperature techonology. The exhibition is organised by the Federal Minister of Education and Research (BMBF), Bonn. There follows: the list of exhibitors A detailed programme will be available in due course at : your Departemental secretariat, the reception information desk, Building 33, the exhibition. A detailed list of firms is available under the following FI link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS ACCEL Instruments GmbH APRA-NORM Elektromechanik GmbH BABCOCK NOELL Nucle...

  20. Germany AT CERN

    CERN Multimedia

    C. Laignel / FI-DI

    2005-01-01

    From 1 to 3 march 2005 Administration Building Bldg 60/61 - ground and 1st floor 09:30 - 17:30 Twenty nine companies will present their latest technology at the "Germany at CERN" exhibition. German industry will exhibit products and technologies related to the field of particle physics. The main sectors represented will be: mechanical engineering, particle detectors, electrical engineering, electronics, data processing, radiation protection and vacuum and low temperature techonology. The exhibition is organised by the Federal Minister of Education and Research (BMBF), Bonn. The exhibitors are listed below. A detailed programme will be available in due course: from your Departemental secretariat, from the reception information desk, Building 33, at the exhibition itself. A detailed list of the participating firms is already available at the following FI link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS ACCEL Instruments GmbH APRA-NORM Elekt...

  1. Germany AT CERN

    CERN Multimedia

    2005-01-01

    From 1 to 2 March 2005 Administration Building Bldg 60/61 - ground and 1st floor 09:30 - 17:30 Twenty nine companies will present their latest technology at the "Germany at CERN" exhibition. German industry will exhibit products and technologies related to the field of particle physics. The main sectors represented will be: mechanical engineering, particle detectors, electrical engineering, electronics, data processing, radiation protection and vacuum and low temperature techonology. The exhibition is organised by the Federal Ministry of Education and Research (BMBF), Bonn. The exhibitors are listed below. A detailed programme will be available in due course: from your Departemental secretariat, from the reception information desk, Building 33, at the exhibition itself. A detailed list of the participating firms is already available at the following FI link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS ACCEL Instruments GmbH APRA-NORM Elekt...

  2. Monitoring Evolution at CERN

    CERN Document Server

    Andrade, P; Murphy, S; Pigueiras, L; Santos, M

    2015-01-01

    Over the past two years, the operation of the CERN Data Centres went through significant changes with the introduction of new mechanisms for hardware procurement, new services for cloud provisioning and configuration management, among other improvements. These changes resulted in an increase of resources being operated in a more dynamic environment. Today, the CERN Data Centres provide over 11000 multi-core processor servers, 130 PB disk servers, 100 PB tape robots, and 150 high performance tape drives. To cope with these developments, an evolution of the data centre monitoring tools was also required. This modernisation was based on a number of guiding rules: sustain the increase of resources, adapt to the new dynamic nature of the data centres, make monitoring data easier to share, give more flexibility to Service Managers on how they publish and consume monitoring metrics and logs, establish a common repository of monitoring data, optimise the handling of monitoring notifications, and replace the previous ...

  3. Belgian Firms Visit CERN

    CERN Multimedia

    2001-01-01

    Fifteen Belgian firms visited CERN last 2 and 3 April to present their know-how. Industrial sectors ranging from precision machining to electrical engineering and electronics were represented. And for the first time, companies from the Flemish and Brussels regions of the country joined their Walloon compatriots, who have come to CERN before. The visit was organised by Mr J.-M. Warêgne, economic and commercial attaché at the Belgian permanent mission for the French-speaking region, Mr J. Van de Vondel, his opposite number for the Flemish region, and Mrs E. Solowianiuk, economic and commercial counsellor at the Belgian permanent mission for the Brussels-Capital region.

  4. Ombud's Corner: Respect @ CERN

    CERN Document Server

    Sudeshna Datta-Cockerill

    2014-01-01

    Since 2010 CERN has been a member of the Geneva-based association "Le respect, ça change la vie". Four years later and in conjunction with CERN’s celebration of its 60 years of ‘science for peace’, it is time to launch a new respectful workplace awareness campaign under the auspices of the Ombud.   Mutual respect is a basic pillar of peace. At CERN, we pride ourselves on our history, which started when a handful of Europe’s visionary scientists saw the opportunity that an international laboratory for fundamental research would present in bringing nations together. That idea has worked very well and, today, our success can be measured not only in terms of unprecedented scientific achievements but also in terms of training and education, and exemplary collaboration across borders, cultures and an extensive range of differences. In order for history to continue along these positive lines, and coming back to the awareness campai...

  5. Great Britain at CERN

    CERN Multimedia

    2006-01-01

    From 14 to 16 November 2006 Administration Building, Bldg. 60/61 - ground and 1st floor 09.30 - 17.30 Fifteen companies will present their latest technologies at the 'Great Britain at CERN' exhibition. British industry will exhibit products and technologies related to the field of particle physics. The main fields represented will be computing technologies, electrical engineering, electronics, mechanical engineering, vacuum & low temperature technologies and particle detectors. The exhibition is organised by BEAMA Exhibitions (the British Electrotechnical and Allied Manufacturers Association). Below you will find: a list of the exhibitors. A detailed programme will be available in due course: from your Departmental secretariat, from the Reception information desk, Building 33, at the exhibition itself. A detailed list of the companies is available at the following FI link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS 3D Metrics Almat...

  6. Great Britain at CERN

    CERN Multimedia

    2006-01-01

    From 14 to 16 November 2006 Administration Building, Bldg. 60/61 - ground and 1st floor 09.30 - 17.30 Fifteen companies will present their latest technologies at the 'Great Britain at CERN' exhibition. British industry will exhibit products and technologies related to the field of particle physics. The main fields represented will be computing technologies, electrical engineering, electronics, mechanical engineering, vacuum & low temperature technologies and particle detectors. The exhibition is organised by BEAMA Exhibitions (the British Electrotechnical and Allied Manufacturers Association). Below you will find: a list of the exhibitors. A detailed programme will be available in due course: from your Departmental secretariat, from the Reception information desk, Building 33, at the exhibition itself. A detailed list of the companies is available at the following FI link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS 3D Metrics Alma...

  7. CERN: Towards LEP 200

    International Nuclear Information System (INIS)

    In March a cryomodule with four superconducting radiofrequency accelerating cavities operated for the first time in CERN's new LEP electron-positron collider, the result of many years of careful research and development work and an important step on the road to boost LEP energies from their initial level around 50 GeV per beam to above the 82 GeV threshold for production of W pairs

  8. CERN Relay Race 2009

    CERN Document Server

    2009-01-01

    The CERN relay race will take place around the Meyrin site on Thursday 14th May starting at 12:15. If possible, please avoid driving on the site during this 20-minute period. If you do meet runners while driving your car, please STOP until they have all passed. Thank you for your cooperation. More details on how to register your team for the relay race

  9. CERN access cards

    CERN Multimedia

    HR Department

    2007-01-01

    Holders of CERN access cards are reminded that the card is an official document. It is important to carry it with you at all times when you are on the site. This applies also to those on standby duty who are called out for emergency interventions. As announced in Weekly Bulletin 13/2006, any loss or theft of access cards must be declared to the competent external authorities.

  10. Discovery Mondays - CERN Microcosm

    CERN Multimedia

    Antonio Marin

    2003-01-01

    Le public est venu nombreux au sixième Lundi Découverte du 6.10.2003 pour voir et manipuler les outils des géomètres du CERN, o le groupe de métrologie de positionnement et de topométrie leur a concocté des animations d'une redoutable précision.

  11. CERN Women's Club

    CERN Multimedia

    Club des cernoises

    2011-01-01

    Coffee Morning Tuesday 11th October, 9:00 – 11:00 Bldg 504 (Restaurant No 2) 1st Floor, Club Room 3 Presentation of the charity to benefit from the Christmas Sale TERRE DES HOMMES New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  12. CERN: Accelerator school

    International Nuclear Information System (INIS)

    Full text: Jyvaskyla, a university town in central Finland, was the setting for last year's General Accelerator School organized by the CERN Accelerator School. Well over a hundred students - more than for some time - followed two weeks of lectures on a broad spectrum of accelerator topics, the first step en route to becoming the designers, builders and operators of the surprisingly large number of, accelerators of all kinds either built or planned throughout Europe and further afield. This was the fifth such school organized by CAS in a biennial cycle which alternates this introductory level with more advanced tuition. The next, advanced, school will be from 20 October - 1 November, hosted by Athens University on the Greek Island of Rhodes. (Application details will become available in Spring but would-be participants should already reserve the dates.) After Finland, the CAS caravan moved to Benalmadena near Malaga in Spain where, together with Seville University, they organized one of the joint US-CERN schools held every two years and focusing on frontier accelerator topics. This time the subject was electron-positron factories - machines for high luminosity experiments in phi, tau-charm, beauty and Z physics. Experts from both sides of the Atlantic and from Japan shared their knowledge with an equally representative audience and probed the many intensity related phenomena which must be mastered to reach design performance. A number of these topics will receive extended coverage in the next specialist CAS School which is a repeat - by public demand - of the highly successful radiofrequency course held in Oxford in 1991. This school will be in Capri, Italy, with the support of the University of Naples from 29 April to 5 May. Details and application forms are now available by e-mail (CASRF@CERNVM.CERN.CH), by fax (+41 22 7824836) or from Suzanne von Wartburg, CERN Accelerator School, 1211 Geneva 23, Switzerland

  13. Les outils du CERN

    CERN Document Server

    1999-01-01

    C'est le plus grand centre mondial de recherche en physique des particules. Les outils du Laboratoire, accélérateurs et détecteurs de particules, figurent parmi les instruments scientifiques les plus complexes au monde. Des prix Nobels ont d'ailleurs été attribués aux physiciens du CERN pour leurs développements.

  14. CERN Electronics Pool presentations

    CERN Multimedia

    2011-01-01

    The CERN Electronics Pool has organised a series of presentations in collaboration with oscilloscope manufacturers. The last one will take place according to the schedule below.   Time will be available at the end of the presentation to discuss your personal needs. The Agilent presentation had to be postponed and will be organised later. -     Lecroy: Thursday, 24 November 2011, in 530-R-030, 14:00 to 16:30.

  15. CERN Women's Club

    CERN Multimedia

    Club des Cernoises

    2013-01-01

    Coffee Morning Tuesday 11th  June 2013, 12:30 Annual Club Lunch at the restaurant “Bois Joly” in Crozet Those interested in helping should come along. New arrivals and all members are cordially invited.You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  16. Cern Women's Club

    CERN Multimedia

    Club des cernoises

    2013-01-01

    Coffee MorningTuesday 12th November 2013, from 9:00 to 11:00 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Organisation of Christmas Sale Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch.

  17. Cern Women's Club

    CERN Multimedia

    Club des cernoises

    2013-01-01

    Coffee MorningTuesday 9th April 2013, 9:00 – 14:00 Bldg 504 (Restaurant No 2 – DSR) Ground Floor Spring Jumble Sale Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  18. Cern Women's club

    CERN Multimedia

    Club des Cernoises

    2013-01-01

    Coffee Morning Tuesday 5th  February 2013, 9:00 – 11:00 Bldg 504 (Restaurant No 2 – DSR) 1st  Floor, Club Room 3 Presentation of cheque to Nous Aussi Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/    

  19. Cern Women's Club

    CERN Multimedia

    Club des cernoises

    2013-01-01

    Coffee MorningTuesday 12th March 2013, 9:00 – 11:00 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Eastern Tradition Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  20. Cern Women's Club

    CERN Document Server

    Club des cernoises

    2013-01-01

    Coffee MorningTuesday 14th January 2014, from 9 : 00 to 11: 00 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Epiphany (French tradition - "Tirer les rois")   Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch.

  1. Cern Women's Club

    CERN Multimedia

    Club des cernoises

    2012-01-01

    Coffee MorningTuesday 15th January 2013, 9:00 – 11:00 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Epiphany (French tradition – “Tirer les rois”) Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  2. Cern Women's Club

    CERN Multimedia

    Club des cernoises

    2013-01-01

    Coffee MorningTuesday 14th May 2013, 9:30 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Annual General Meeting Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch

  3. CERN Women's Club

    CERN Multimedia

    CERN Women's Club

    2012-01-01

    Coffee Morning Tuesday 15th  May 2012, 9:00 Building 504,  (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Annual General Meeting Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  4. CERN Women's Club

    CERN Multimedia

    CERN Women's Club

    2012-01-01

    offee Morning Tuesday 12th  June 2012, 12:30 Annual Club Lunch at "The Physalis" in Prévessin Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  5. CERN Women's Club

    CERN Multimedia

    CERN Women's Club

    2013-01-01

    Coffee Morning Tuesday 10th September 2013, 9:00 Bldg 504, (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Registration Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  6. Cern Women's Club

    CERN Multimedia

    Club des Cernoises

    2011-01-01

    Coffee Morning Tuesday 8th November 2011, 9:00 - 11:00 Bldg 504 (Restaurant No 2 - DSR) 1st Floor, Club Room 3 Organization of our Christmas Sale In favour of “Terre des Hommes” Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  7. CERN Women's Club

    CERN Multimedia

    CERN Women's Club

    2011-01-01

    Coffee Morning Tuesday 10th January 2012, 9:00 – 11:00 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Epiphany (French tradition – “Tirer les rois”) Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/

  8. CERN: an aerial view

    CERN Multimedia

    2004-01-01

    On 30th January, when CERN still resembled a winter wonderland, a helicopter with a photographer on board took off on an aerial tour. One sunny morning at the end of January, when the area was waking up to an overnight snowfall, a helicopter took off from the Meyrin site with a CERN photographer on board. CERN has been the subject of aerial photographs ever since its creation. Although its appearance has changed over the years, the Laboratory has aged well. The aerial photographs taken during its fifty-year history bear witness to its expansion, showing how a handful of buildings and a first accelerator have blossomed into an entire machine complex. Let's take to the skies and have a look at some of the photos taken on this crisp January morning: a sight for sore eyes! In the foreground, Building 40 on the Meyrin site is recognisable from its magnet shape.On the right of the Route de Meyrin (crossing the photo diagonally), next to Point 1, the work on the Globe of Innovation, which got underway at the beg...

  9. CERN Housing Service : HOSTELS

    CERN Multimedia

    2005-01-01

    ARRANGEMENTS FOR THE END-OF-YEAR CLOSURE Hostels on the CERN site During the CERN shutdown over Christmas and the New Year, the hostels will be closed from midday on Wednesday, 21 December 2005 until 7.30 a.m. on Thursday, 5 January 2006. All accounts must be settled and room keys returned to the Reception before 10.00 a.m. on Wednesday, 21 December 2005. Hostel in St. Genis-Pouilly The wing reserved for CERN will be closed from midday on Wednesday, 21 December 2005 until 8.00 a.m. on Thursday, 5 January 2006. Anyone with no alternative but to stay in the hostel during this period can be accommodated in another part of the building, subject to availability. Those concerned must make the appropriate reservations in person at the Reception of the St. Genis Hostel as early as possible and in any case no later than Wednesday, 14 December 2005. The total stay during the two weeks in question must be paid for in advance, no later than Wednesday, 14 December 2005. After this date, any reservations that have ...

  10. CERN GSM monitoring system

    CERN Multimedia

    Ghabrous Larrea, C

    2009-01-01

    As a result of the tremendous development of GSM services over the last years, the number of related services used by organizations has drastically increased. Therefore, monitoring GSM services is becoming a business critical issue in order to be able to react appropriately in case of incident. In order to provide with GSM coverage all the CERN underground facilities, more than 50 km of leaky feeder cable have been deployed. This infrastructure is also used to propagate VHF radio signals for the CERN’s fire brigade. Even though CERN’s mobile operator monitors the network, it cannot guarantee the availability of GSM services, and for sure not VHF services, where signals are carried by the leaky feeder cable. So, a global monitoring system has become critical to CERN. In addition, monitoring this infrastructure will allow to characterize its behaviour over time, especially with LHC operation. Given that commercial solutions were not yet mature, CERN developed a system based on GSM probes and an application...

  11. Upcycling CERN Exhibitions

    CERN Multimedia

    Katarina Anthony

    2015-01-01

    Summer is coming - and with it, a new Microcosm exhibition showcasing CERN (see here). But while the new exhibit is preparing to enchant visitors, many have been asking about the site's former content. Will it simply be out with the old and in with the new? Not as such!   The plasma ball from Microcosm is now on display at the LHCb site. As Microcosm's new content is moving in, its old content is moving up. From LHCb to IdeaSquare, former Microcosm displays and objects are being installed across the CERN site. "Microcosm featured many elements that were well suited to life outside of the exhibition," says Emma Sanders, Microcosm project leader in the EDU group. "We didn't want this popular content to go to waste, and so set out to find them new homes across CERN." The LHCb experiment has received a number of Microcosm favourites, including the Rutherford experiment, the cosmic ray display and the Thomson experiment. "We&...

  12. CERN printing infrastructure

    International Nuclear Information System (INIS)

    For many years CERN had a very sophisticated print server infrastructure [13] which supported several different protocols (AppleTalk, IPX and TCP/IP) and many different printing standards. Today's situation differs a lot: we have a much more homogenous network infrastructure, where TCP/IP is used everywhere and we have less printer models, which almost all work using current standards (i.e. they all provide PostScript drivers). This change gave us the possibility to review the printing architecture aiming at simplifying the infrastructure in order to achieve full automation of the service. The new infrastructure offers both: LPD service exposing print queues to Linux and Mac OS X computers and native printing for Windows based clients. The printer driver distribution is automatic and native on Windows and automated by custom mechanisms on Linux, where the appropriate Foomatic drivers are configured. Also the process of printer registration and queue creation is completely automated following the printer registration in the network database. At the end of 2006 we have moved all (∼1200) CERN printers and all users' connections at CERN to the new service. This paper will describe the new architecture and summarize the process of migration

  13. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    Carlo Rubbia turned 75 on March 31, and CERN held a symposium to mark his birthday and pay tribute to his impressive contribution to both CERN and science. Carlo Rubbia, 4th from right, together with the speakers at the symposium.On 7 April CERN hosted a celebration marking Carlo Rubbia’s 75th birthday and 25 years since he was awarded the Nobel Prize for Physics. "Today we will celebrate 100 years of Carlo Rubbia" joked CERN’s Director-General, Rolf Heuer in his opening speech, "75 years of his age and 25 years of the Nobel Prize." Rubbia received the Nobel Prize along with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. During the symposium, which was held in the Main Auditorium, several eminent speakers gave lectures on areas of science to which Carlo Rubbia made decisive contributions. Among those who spoke were Michel Spiro, Director of the French National Insti...

  14. Spanish Visit to CERN

    CERN Multimedia

    2002-01-01

    Last week CERN was visited by the Spanish Minister of Science and Technology, Josep Piqué i Camps. While here, he was able to visit the ATLAS assembly hall where many items of equipment are being built in collaboration with Spanish academic institutions or firms. These include the vacuum vessels for the ATLAS barrel toroid magnets supplied by the Spanish firm Felguera Construcciones Mechanics. Similarly, the Universidad Autónoma de Madrid is participating in the manufacture of the electromagnetic calorimeter endcaps, while the Barcelona Institute for High Energy Physics and the Valencia IFIC (Instituto de Física Corpuscular) are highly involved in the production of barrel modules for the tile calorimeter. The delegation, accompanied by Spanish scientists at CERN, also visited the LHC superconducting magnet test hall (photo). From left to right: Felix Rodriguez Mateos of CERN LHC Division, Josep Piqué i Camps, Spanish Minister of Science and Technology, César Dopazo, Director-General of CIEMAT (Spanish ...

  15. Serbian President visits CERN

    CERN Multimedia

    Katarina Anthony

    2012-01-01

    On Tuesday 10 January, Serbian President Boris Tadić visited the Laboratory to sign the Agreement of granting the status of Associate Membership as the pre-stage to full Membership of CERN.    Before the signing ceremony, the President, welcomed by Director-General Rolf Heuer at CERN’s Point 5, took the opportunity to visit CERN. After a general introduction, the President took advantage of the shutdown to visit the LHC’s underground caverns. Leading the President through their respective experiments were spokespersons Fabiola Gianotti (ATLAS) and Joe Incandela (CMS).  After a morning of tours, President Tadić and Rolf Heuer signed the Agreement. Serbia’s status as an Associate Member as pre-stage to full Membership is expected to come into force following ratification by the Serbian Parliament. After a maximum period of five years, the CERN Council will decide on the admission of Serbia to full Membership. This new agreement continues Serbia&a...

  16. CERN on the net

    CERN Document Server

    2008-01-01

    As all eyes turn to the LHC in the run-up to the big switch-on, online media are providing a keyhole into the deepest corners of CERN. From YouTube to blogs, communicating ideas has never before had the capacity to reach so many people. A wide range of websites comment on CERN.Blogs, YouTube, social networking, podcasting, Twitter, SecondLife, Flickr…. it’s easy to get lost in the ever expanding world of Web 2.0. But it’s also hard to ignore the fact that these web facilities are becoming a central part of everyday life, whether it’s for finding information, sharing interests with friends, keeping up to date with news, or simply for entertainment. CERN’s profile on these sites is also increasing, but as with everything on the Internet there is a huge range in the quality of information available, stretching from officially endorsed sites all the way to the plain ridiculous! This is our guide to some of the best CERN conte...

  17. On location at CERN

    CERN Multimedia

    Joannah Caborn Wengler

    2012-01-01

    CERN continues to be a very popular candidate for film locations at the moment. Not only has it inspired a German author and a film-maker interested in the more exotic interpretations of the science being worked on at the Organization, but even the recent puppet animation film by the legendary Muppets featured some CERN scenes.   Dr Bunsen Honeydew (far left) and his friends at ATLAS. Beaker, Bunsen's assistant, has just been sucked up the vacuum tube top left... Image courtesy Walt Disney Studios. In “The Muppet Movie”, released in November 2011 in North America and world-wide in January and February this year, Kermit is reuniting his friends who have ended up in some far-flung places since they last worked together 10 years ago. CERN caught the imagination of the film-makers as the perfect place for the Muppet scientists, Dr. Honeydew Bunsen and his hapless assistant Beaker. After a brief scene filmed in front of a backdrop of the ATLAS detector, the rest of the ...

  18. CERN's first female firefighter

    CERN Multimedia

    Alizée Dauvergne

    2010-01-01

    Until recently, the women's changing room in the Fire Station, built in 2005, has always been empty. With the arrival of Séverine Peverelly, CERN's first female firefighter, it now has a purpose. Séverine Peverelly took up her post as a firefighter in April. Séverine, who comes from Gap in France, took up her post as a firefighter in the CERN fire brigade at the beginning of April. "We were looking for a new member," explains David Peyron, Head of the Fire and Rescue Service. It didn't matter if it was a man or a woman; we needed a firefighter with the right skills, and Séverine just happened to have them." With ten years experience working in French fire services, Séverine was looking for a new challenge. "What attracted me to CERN was the international dimension, because that creates additional challenges," she explains. And these can be considerable! For one thing, every country has its own way of worki...

  19. Control week at CERN

    CERN Multimedia

    2008-01-01

    From 19 to 23 May, the IT-CO Group will be organising the first "Poster forum" at CERN on the theme of process control. Process control lies at the heart of numerous conferences across the world in which CERN takes an active part. Many posters have been produced, and these deserve to be presented to everybody in order to give value to, share and derive maximum benefit from the software, tools and methods developed and used at CERN in this field. This initiative will also allow each group, section and member of the personnel to present their work to others at the Laboratory. The forum will take place from 19 to 23 May in the main hall of Building 500, leading to Restaurant No. 1, on the Meyrin site. To stimulate discussions and exchanges, the authors will be in attendance by their posters on Thursday 22 May between 12 noon and 2.00 p.m. Interested? If you wish to take part and present your work, please contact mathias.philippe.dutou...

  20. New psychologist at CERN

    CERN Multimedia

    Laëtitia Pedroso

    2010-01-01

    A new psychologist, Sigrid Malandain, started work at CERN on 1 November. The psychologist’s office, formerly part of the Social Affairs Service in Human Resources, has now moved to the Medical Service (office 57-1-024). It is open every Tuesday and Thursday.   The new psychologist, Sigrid Malandain. Working in an organisation like CERN has numerous advantages. However, as in any professional setting, the work can sometimes bring stress, anxiety, overwork and so on. For this reason, a few years ago CERN brought in a psychologist for the staff. “As a psychologist, my role isn’t just to deal with known problems, but also to make assessments and, if possible, prevent difficult situations arising. Sometimes people realise that something is wrong, but they can’t say why. In such cases, I may be able to use a discussion to assess the nature of the problem and determine if further sessions are needed. If that is the case, I can either conduct the session...

  1. CERN, accelerator of motivation

    CERN Multimedia

    François Becler

    2014-01-01

    Have your dreams ever come true? My dream did, when I was lucky enough to be allowed into the world’s largest particle physics laboratory and spend five whole days there.   François, in front of LEP's DELPHI detector, displayed in the LHCb cavern. François was given the opportunity to visit the experiment during his placement at CERN. I’m a pupil in my last year at the Collège Jean-Jacques Rousseau in Saint-Julien-en-Genevois and was on a work experience placement at CERN from 16 to 20 December last year. I’m so happy I was chosen because working alongside physicists and engineers of all nationalities was like a dream come true. The first thing that impressed me was the size of the site, its infrastructures and facilities but also the fact that I was working in a prestigious, world-renowned organisation. I spent lots of time looking at the map and trying to find my way around... CERN's such a massive place ! Th...

  2. Denis Guedj at CERN

    CERN Multimedia

    2009-01-01

    Denis Guedj (right), pictured with Etiennette Auffray Hillemanns of the CMS collaboration and Hartmut Hillemanns of the DG-KTT group.French author Denis Guedj, who is also a mathematician and Professor of History of Science at Paris VIII University, visited CERN on 7 and 8 October. During a presentation in the CERN Library he discussed his 15 published books and likened the process of novel writing to working on a scientific experiment: it begins with a limited amount of data, and then questions arise, problems are solved and further research reveals truths. Denis Guedj works hard to ensure that his novels contain ‘true fiction’. His most recent visit to CERN will help him to write a new book set at the LHC in which he will combine his scientific interest in what happens when a proton and proton collide with a human story about what happens to a male and female physicist who meet in the LHC tunnel. "Visiting the CMS cavern was...

  3. CERN Housing Service: Hostel

    CERN Multimedia

    2004-01-01

    Arrangements for the end of the year closure Hostel on the CERN site During the closure of CERN for Christmas and the New Year, the hostel will be closed from mid-day on Friday, December 17, 2004 until Monday, January 3, 2005 at 8h00. All accounts must be settled and room keys returned to the Reception before 10h00 on Friday, December 17, 2004. Hostel in St. Genis-Pouilly The wing reserved for CERN will be closed from mid-day on Friday, December 17, 2004 until Monday, January 3, 2005 at 8h00. Anyone with no alternative but to stay in the Hostel during this period can be accommodated in another part of the building. The people concerned must make the appropriate reservations in person at the Reception of the St. Genis Hostel, as far in advance as possible and in any case no later than Friday, December 10, 2004. The total length of stay during the two weeks in question must be paid for in advance, no later than Friday, December 10, 2004. All reservations remaining unpaid after this date will be cancell...

  4. CERN HOUSING SERVICE: HOSTEL

    CERN Multimedia

    2003-01-01

    1. Arrangements for the end of the year closure 1.1 Hostel on the CERN site During the closure of CERN for Christmas and the New Year, the hostel will be closed from mid-day on Friday, December 19, 2003 until Monday, January 5, 2004 at 8h00. All accounts must be settled and room keys returned to the Reception before 10h00 on Friday, December 19, 2003. 1.2 Hostel in St. Genis-Pouilly The wing reserved for CERN will be closed from mid-day on Friday, December 19, 2003 until Monday, January 5, 2004 at 8h00. Anyone with no alternative but to stay in the Hostel during this period can be accommodated in another part of the building. The people concerned must make the appropriate reservations in person at the Reception of the St. Genis Hostel, as far in advance as possible and in any case no later than Friday, December 12, 2003. The total length of stay during the two weeks in question must be paid for in advance, no later than Friday, December 12, 2003. All reservations remaining unpaid after this date will be canc...

  5. CERN HOUSING SERVICE: HOSTEL

    CERN Multimedia

    2002-01-01

    1. Arrangements for the end of the year closure 1.1 Hostel on the CERN site During the closure of CERN for Christmas and the New Year, the hostel will be closed from midday on Friday 20 December 2002 until Monday 6 January 2003 at 8h00. All accounts must be settled and room keys returned to the Reception before 10h00 on Friday 20 December 2002. 1.2 Hostel in St. Genis-Pouilly The wing reserved for CERN will be closed from midday on Friday 20 December 2002 until Monday 6 January 2003 at 8h00. Anyone with no alternative but to stay in the Hostel during this period can be accommodated in another part of the building. The people concerned must make the appropriate reservations in person at the Reception of the St. Genis Hostel, as far in advance as possible and in any case no later than Friday 13 December 2002. The total length of stay during the two weeks in question must be paid for in advance, no later than Friday 13 December 2002. All reservations remaining unpaid after this date will be cancelled. 2. Reminde...

  6. CERN Library | Agnes Chavez @ CERN | 17 March

    CERN Multimedia

    2015-01-01

    Agnes Chavez will present her work on Tuesday, 17 March 2015 at 4 p.m. in the Library (Builidng. 52-1-052) Coffee will be served from 3.30 p.m.   Agnes Chavez is an artist and educator participating in a two-week research stay organised by the ATLAS Experiment at CERN. Chavez is using the stay to develop her art and education project, Projecting pARTicles, which will be exploring particle physics through projection art. Chavez experiments with data visualization, sound and projection art to create participatory environments. She collaborates with programmers to create algorithmic drawings projected on to buildings, walls and spaces. This work explores our relationship with nature and technology, and how these and other sensory experiences determine how we perceive and interpret the world around us. For the Projecting pARTicles series she has formed an interdisciplinary team of programmers, artists, scientists and educators to investigate how we can create art and education interventions inspire...

  7. CAS on Free-Electron Lasers and Energy Recovery Linacs in Hamburg

    CERN Multimedia

    CERN Accelerator School

    2016-01-01

    The CERN Accelerator School (CAS) and DESY held a jointly-organised specialised course on Free-Electron Lasers and Energy Recovery Linacs (FELs and ERLs) in Hamburg, Germany, from 31 May to 10 June 2016.      The course was held in the Hotel Scandic Emporio in Hamburg and was attended by 68 participants of 13 nationalities, coming from countries as far away as China, Iran and Japan. The intensive programme comprised 44 lectures and one seminar. Following introductory lectures on electromagnetism, relativity and synchrotron radiation issues, the basic requirements of linacs and ERLs were discussed. Detailed lectures on the theory of FEL science followed. Undulators and the process of lasing and seeding were covered in some detail along with lectures on various beam dynamics and beam control issues. Case studies, for which seven hours were allocated, completed the academic programme. For these, the students were divided into small groups and tasked with completing the basic desig...

  8. CERN: Fixed target targets

    International Nuclear Information System (INIS)

    Full text: While the immediate priority of CERN's research programme is to exploit to the full the world's largest accelerator, the LEP electron-positron collider and its concomitant LEP200 energy upgrade (January, page 1), CERN is also mindful of its long tradition of diversified research. Away from LEP and preparations for the LHC proton-proton collider to be built above LEP in the same 27-kilometre tunnel, CERN is also preparing for a new generation of heavy ion experiments using a new source, providing heavier ions (April 1992, page 8), with first physics expected next year. CERN's smallest accelerator, the LEAR Low Energy Antiproton Ring continues to cover a wide range of research topics, and saw a record number of hours of operation in 1992. The new ISOLDE on-line isotope separator was inaugurated last year (July, page 5) and physics is already underway. The remaining effort concentrates around fixed target experiments at the SPS synchrotron, which formed the main thrust of CERN's research during the late 1970s. With the SPS and LEAR now approaching middle age, their research future was extensively studied last year. Broadly, a vigorous SPS programme looks assured until at least the end of 1995. Decisions for the longer term future of the West Experimental Area of the SPS will have to take into account the heavy demand for test beams from work towards experiments at big colliders, both at CERN and elsewhere. The North Experimental Area is the scene of larger experiments with longer lead times. Several more years of LEAR exploitation are already in the pipeline, but for the longer term, the ambitious Superlear project for a superconducting ring (January 1992, page 7) did not catch on. Neutrino physics has a long tradition at CERN, and this continues with the preparations for two major projects, the Chorus and Nomad experiments (November 1991, page 7), to start next year in the West Area. Delicate neutrino oscillation effects could become

  9. CERN openlab enters fifth phase

    CERN Multimedia

    Andrew Purcell

    2015-01-01

    CERN openlab is a unique public-private partnership between CERN and leading ICT companies. At the start of this year, openlab officially entered its fifth phase, which will run until the end of 2017. For the first time in its history, it has extended beyond the CERN community to include other major European and international research laboratories.   Founded in 2001 to develop the innovative ICT systems needed to cope with the unprecedented computing challenges of the LHC, CERN openlab unites science and industry at the cutting edge of research and innovation. In a white paper published last year, CERN openlab set out the main ICT challenges it will tackle during its fifth phase, namely data acquisition, computing platforms, data storage architectures, computer management and provisioning, networks and connectivity, and data analytics. As it enters its fifth phase, CERN openlab is expanding to include other research laboratories. "Today, research centres in other disciplines are also st...

  10. Italy's Prime Minister visits CERN

    CERN Multimedia

    Stefania Pandolfi

    2015-01-01

    On Tuesday, 7 July 2015, the Prime Minister of the Italian Republic, Matteo Renzi, visited CERN. He was accompanied by a delegation that included Italy's Minister for Education, University and Research, Stefania Giannini.   From left to right: Fernando Ferroni, President of the Istituto Nazionale di Fisica Nucleare (INFN); Sergio Bertolucci, CERN Director for Research and Scientific Computing; Stefania Giannini, Italy's Minister of Education, University and Research; Matteo Renzi, Prime Minister of the Italian Republic; Fabiola Gianotti, CERN Director-General Designate; Rolf Heuer, CERN Director-General.   The Prime Minister was welcomed by members of the CERN Management together with former CERN Director-General and Senator for Life of the Italian Republic, Carlo Rubbia. After a brief general introduction to CERN’s activities by Rolf Heuer, the Italian delegation visited LHC Point 1. After a tour of the ATLAS control room, they donned helmets to visit th...

  11. CERN openlab summer student programme

    CERN Multimedia

    2013-01-01

    CERN openlab is currently taking applications for its summer student programme. The closing date for applications is 31 March 2013.   The openlab summer student programme is open for applications from bachelor, master and PhD students in computer science and physics. Successful applicants will spend 9 weeks at CERN, during the period from June to September 2013, working with some of the latest hardware and software technologies. The programme is more than just a summer at CERN: it can lead to follow-on projects at the home institute and may even inspire students to become entrepreneurs in cutting-edge computing technologies. A series of lectures will be given by experts in various domains of CERN-related high-throughput computing. Study tours of external companies and universities as well as of CERN facilities are also part of the programme. Please visit the CERN openlab website for more information.

  12. CERN openlab Summer Student Programme

    CERN Multimedia

    2012-01-01

    CERN openlab is currently taking applications for its summer student programme. The closing date for applications is 30 March 2012.   The openlab Summer Student Programme is open for applications from bachelor, master and PhD students in computer science and physics. Successful applicants will spend 8 weeks at CERN, during the period June to September 2012, to work with some of the latest hardware and software technologies. The programme is more than just a summer at CERN: it can lead to follow-on projects at the home institute and may even inspire the students to become entrepreneurs in cutting-edge computing technologies. A series of lectures will be given by experts in various domains of CERN related high-throughput computing. Study tours to external companies and universities as well as to CERN facilities are also part of the programme. Please visit www.cern.ch/openlab-students for more information.

  13. Wake Field Effect Analysis in APT Linac

    OpenAIRE

    Kurennoy, Sergey S.

    1998-01-01

    The 1.7-GeV 100-mA CW proton linac is now under design for the Accelerator Production of Tritium (APT) Project. The APT linac comprises both the normal conducting (below 211 MeV) and superconducting (SC) sections. The high current leads to stringent restrictions on allowable beam losses (

  14. Study of characteristics of linac with TWRR

    International Nuclear Information System (INIS)

    High power electron linac which is developed by PNC is an electron linac with the TWRR (Traveling Wave Resonant Ring). Some phenomena occurred on our high power test are mentioned. Some important characteristics such as stability and phase characteristic are discussed. (author)

  15. Earned Value Conference at CERN - 25-26 November 2009 (Main Building, first floor)

    CERN Multimedia

    GS Department

    Next week, 25-26 November, 60 participants from universities and industry will meet at CERN for the first European conference on Earned Value Management and Analysis. This project control methodology was first introduced -in anger- during LHC, and will further be in use for the LHC upgrade projects like Linac4. During the conference, more information on the methodology will be presented and experiences will be shared on how “Earned Value” has been used at CERN and in industry. More information On the web site, you can also find the conference schedule. If you would like to attend some of the presentations, please send an email to jurgen.de.jonghe@cern.ch

  16. Scientific Information Service at CERN

    CERN Document Server

    Pereira, Margarida

    2016-01-01

    Dissemination of information is an essential part of CERN's mission. It brings people together from all around the world and trains the scientists of tomorrow. CERN scientific output is documented and made available for the scientific community and the general public through the CERN Document Server, INSPIRE-HEP and Wikipedia. This report presents the work done in the Scientific Information Service during the summer student program.

  17. RF linacs for esoteric applications

    International Nuclear Information System (INIS)

    Particle accelerators of various types have been considered for many years in terms of their application to national defense. Recently, the Strategic Defense Initiative has focused and emphasized such applications. After appropriate and extensive development, accelerators could fulfill important roles in a defensive-system architecture and could compete effectively with other technologies. A great deal of the required development is engineering. Aspects of the R and D program on rf-linac-based applications are discussed, and potential long-term influences on accelerator technology are outlined

  18. The linac coherent light source

    International Nuclear Information System (INIS)

    The Linac Coherent Light Source is a self-amplified spontaneous emission based free electron laser to be built at the Stanford Linear Accelerator Centre by a multi-laboratory collaboration. This facility will provide ultra-short pulses of coherent X-ray radiation with the fundamental harmonic energy tuneable over the energy range of 0.82 to 8.2 keV. In addition to the coherent X-ray radiation, which will have an extremely high peak and average brightness, a continuous spectrum of spontaneous synchrotron radiation (SR) of high brightness will also be produced. The characteristics of the LCLS and its associated radiological issues are discussed. (authors)

  19. Electron beam linac simulations, 1985

    International Nuclear Information System (INIS)

    The results of particle simulation studies of electron beam problems for the year 1985 are summarized. Although the main subjects this year were mostly the same as in previous years, namely foilless diodes, accelerating gaps, and beam extraction, a major new element this year was the addition of IFR (ion-focused-regime) channels to the various components of a linac beam line. Of particular interest may be the new results obtained for IFR autoacceleration gaps (relevant to MIMI), and the studies of extraction from a guide magnetic field onto an IFR propagation channel (relevant to RADLAC II). 49 figs., 20 refs

  20. Induction linacs and pulsed power

    International Nuclear Information System (INIS)

    Progress in electronic power conversion technology is making possible a new class of induction linacs that can operate at extremely high repetition rates. Advances in insulator technology, pulse forming line design and switching may also lead to a new type of high current accelerator with accelerating gradients at least an order of magnitude greater than those attainable today. The evolution of the induction accelerator pulsed power system will be discussed along with some details of these emerging technologies which are at the frontiers of accelerator technology

  1. Dear CERN and ESO Colleagues and Retirees

    CERN Multimedia

    Pension Fund

    2010-01-01

    Following approval by the CERN Pension Fund Governing Board, the CERN Pension Fund team is pleased to announce the new website address of your Pension Fund: http://pensionfund.cern.ch I take this opportunity to thank all the technical teams at CERN for the quality and rapidity of their support. Kind regards, Théodore Economou CEO, CERN Pension Fund

  2. Operation of the GTS-LHC Source for the Hadron Injector at CERN%CERN用于强子研究加速器系统离子注入的离子源GTS-LHC运行状况

    Institute of Scientific and Technical Information of China (English)

    L.Dumas; C.Hill; D.Hitz; D.Küchler; C.Mastrostefano; M.O'Neil; R.Scrivens

    2007-01-01

    The GTS-LHC ion source,designed and build by CEA Grenoble,was installed and commissioned at CERN in 2005.Since than the source has delivered oxygen and lead ion beams (O4+ and Pb27+ from the source,Pb54+ from the linac)for the commissioning of the Low Energy Ion Ring(LEIR).Results of this operation and attempts to improve the source performance and reliability,and the linac performance will be presented in this paper.

  3. CERN Permanent exhibitions short version

    CERN Multimedia

    2016-01-01

    Visits Explore by yourself the issues CERN's physicists are trying to solve: given that the entire universe is made of particles, where do they come from? Why do they behave in the way they do? Discover the massive apparatus used by physicists at CERN, like the LHC, and see how each part works. CERN invites the public to discover the mysteries of the Universe and the work of the world's biggest physics laboratory through free of charge guided tours and permanent exhibitions. As a group, with friends, individually, on foot, on your bike, come and discover CERN or explore it virtually. Welcome!

  4. News from the CERN Printshop

    CERN Multimedia

    IT Department

    2010-01-01

    Please note there are a limited number of the 2011 CERN wall calendars now available from the Printshop, located in Building 510-R-007. These have been printed on card in A3 and A4. If you need more than a few copies, there are two solutions: download the file and print your own on paper; send us an e-mail to place an order. Please visit the new Printshop website for more information: http://cern.ch/printshop. Printshop reception opening hours: 10h00-12h00 and 13h00-15h00. Many thanks. CERN Printshop Tel: 72426 E-mail: Printshop@cern.ch

  5. Magnetic Qualification of Permanent Magnet Quadrupoles for CERN’s Linac4

    CERN Document Server

    Buzio, M; Lombardi, A; Mateo, F

    2012-01-01

    This paper summarizes the results of the magnetic measurements done to qualify prototypes and series permanent- magnet quadrupoles for the new Linac4, currently in construction at CERN. The results, obtained with a combination of stretched wire and rotating coil techniques, include the individually tuned integrated field gradient, multipoles, magnetic axis and field direction. These magnets are characterized by a challengingly small 22 mm aperture diameter and we illustrate the methods adopted to guarantee instrument calibration, along with the estimated accuracies of the measured quantities and their impact on beam optics.

  6. Phase scan signature matching for linac tuning

    International Nuclear Information System (INIS)

    A relatively simple method for linac tuning has been devised, tested and used on the Alvarez and side coupled linacs. Tank or Module phase is varied over 360 degrees while the phase of signals from strip-line beam monitor is measured. Reference phase is taken from the master oscillator for the linac. Theoretical curves of beam phase versus tank/module phase are matched to the measured curves to determine the tank/module field amplitude and phase, and the input and output betas of the tanks/modules. Early experiments on tanks 4--7 of the Alvarez linac have demonstrated the feasibility of the technique. Recently this method was used for commissioning of the Fermilab upgraded linac

  7. Contributed papers to the 1984 Linac Conference

    International Nuclear Information System (INIS)

    The LEP Injector Linacs (LIL) are the first part of the LEP injection chain, and consist of a 200 MeV high current electron linac, followed by a 600 MeV low current electron/positron linac. First a description of the complete machine is presented. Then the accelerating structures are more particularly described. The automatic phasing system which shall be used during the operation of the linacs is also presented together with measurements and tests. At least the front end linac is described, with the instrumentation developped by LAL in order to measure the beam parameters intensity, energy, emittance, bunch length. Main results of the experimental program which took place in 1982 and 1983 are given

  8. 2014 CERN Accelerator Schools

    CERN Multimedia

    2014-01-01

    A specialised school on Power Converters will be held in Baden, Switzerland, from 7 to 14 May 2014. Please note that the deadline for applications is 7 FEBRUARY 2014. A course on Introduction to Accelerator Physics will be held in Prague, Czech Republic, from 31 August to 12 September 2014. Applications are now open for this school; the application deadline is 25 APRIL 2014. Further information on these schools and other CAS events can be found on the CAS website and on the Indico page. For further information please contact Barbara.strasser@cern.ch

  9. CERN Relay Race

    CERN Document Server

    2011-01-01

    The CERN relay race will take place around the Meyrin site on Thursday 19 May starting at 12-15. If possible, please avoid driving on the site during this 20-minute period. If you do meet runners while driving your car, please STOP until they have all passed. Thank you for your cooperation. Details of the course and of how to register your team for the relay race can be found here. Some advice for all runners from the Medical Service can also be found here.   

  10. CERN hearing day

    CERN Multimedia

    2005-01-01

    1 in 10 people suffer from hearing loss - do you? The Medical Service invites everyone working on CERN premises to participate in the National Hearing Day on: Thursday 10th March From 9am to 4pm The Infirmary, Blg. 57, Gr.Fl. We will be offering hearing tests (audiogram); information, advice on hearing loss, tinnitus and more. Deafness does not just affect the elderly: in Europe, 50% the hearing-impaired are under the age of 55. Exposure to excessive noise is one of the main reasons for hearing loss. But prevention is possible and effective: for example, Hearing protection devices could reduce tinnitus cases by 80%.

  11. CERN hearing day

    CERN Multimedia

    2005-01-01

    1 in 10 people suffer from hearing loss ? do you? The Medical Service invites everyone working on the CERN site to participate in the NATIONAL HEARING DAY on: Thursday 10th March 2005 From 9am to 4pm The Infirmary, Blg. 57, Ground Floor We will be offering hearing tests (audiograms), as well as information and advice on hearing loss, tinnitus, etc. Deafness does not just affect the elderly: in Europe, 50% of the hearing-impaired are under the age of 55. Exposure to excessive noise is one of the main reasons for hearing problems but prevention is possible. For example, hearing protection devices can prevent 80% of tinnitus cases.

  12. CERN hearing day

    CERN Multimedia

    2005-01-01

    1 in 10 people suffer from hearing loss - do you? The Medical Service invites everyone working on the CERN site to participate in the NATIONAL HEARING DAY on: Thursday 10th March 2005 From 9am to 4pm The Infirmary, Blg. 57, Ground Floor We will be offering hearing tests (audiograms), as well as information and advice on hearing loss, tinnitus, etc. Deafness does not just affect the elderly: in Europe, 50% of the hearing-impaired are under the age of 55. Exposure to excessive noise is one of the main reasons for hearing problems but PREVENTION IS POSSIBLE. For example, hearing protection devices can prevent 80% of tinnitus cases.

  13. CERN hearing day

    CERN Multimedia

    2005-01-01

    1 in 10 people suffer from hearing loss - do you? The Medical Service invites everyone working on CERN premises to participate in the National Hearing Day on: Thursday 10th March From 9am to 4pm The Infirmary, Blg. 57, Gr.Fl. We will be offering hearing tests (audiogram); information, advice on hearing loss, tinnitus and more. Deafness does not just affect the elderly: in Europe, 50% the hearing-impaired are under the age of 55. Exposure to excessive noise is one of the main reasons for hearing loss. But PREVENTION IS POSSIBLE AND EFFECTIVE: for example, Hearing protection devices could reduce tinnitus cases by 80%.

  14. CERN safety week

    CERN Multimedia

    DG Unit

    2009-01-01

    Following an increase in the number of accidents in 2008, the Safety Commission is organising a CERN safety week from 8 to 12 June for riders of bicycles, scooters and motorbikes. We invite you to take part in the programme, which will be held in the Main Building (Bldg. 500) and will consist of an exhibition, organised events and hands-on activities, including demonstrations of emergency braking, a driving simulator, simulation of what it feels like to drive under the influence of alcohol, demonstrations by the Fire Brigade, video projections, etc. There will also be a number of prizes to be won. Please sign up via your DSO.

  15. Michael Frayn visits CERN

    CERN Multimedia

    2007-01-01

    Award-winning playwright and novelist Michael Frayn gave a guest lecture in the main auditorium at CERN on Friday 15 March about his new book The Human Touch: Our Part in the Creation of the Universe. The lecture focused on cosmology and philosophy and the limitations that language places on our ability to understand the creation of a universe in which we seem to play such a small part. In addition to his novels and plays, which include Copenhagen, a play about the 1941 meeting between German physicist Werner Heisenberg and Danish physicist Niels Bohr, Frayn has translated several works from Russian, including plays by Chekhov and Tolstoy.

  16. Spotlight on CERN

    CERN Multimedia

    CERN video productions

    2009-01-01

    Welcome to the Globe of Science and Innovation for the first "Spotlight on CERN" just a few weeks before the restart of the LHC machine. Today our guest is Mike Lamont, who is in charge of the Operations Group for the accelerator beams. This weekend, protons were injected into the LHC for the first time since September 2008. But before we talk about that, let's go back a few weeks and look at the previous stage, which involved testing the transfer lines of the injection tunnels TI2/TI8. Our video team was there to film this operation.

  17. Cern Women's club

    CERN Document Server

    Cern Women's club

    2014-01-01

    Coffee Morning Tuesday 14th October 2014, 9:30 – 11:30 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Presentation of the charity to benefit from the Christmas Sale “Les Jardins de Voltaire” Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/  

  18. Cern Women's Club

    CERN Multimedia

    Club des cernoises

    2013-01-01

    Coffee MorningTuesday 8th October 2013, from 9:00 to 11:00 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Presentation of the charity to benefit from the Christmas Sale  “Au Coeur des Grottes”. Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch.

  19. Tech meetups @ CERN

    CERN Document Server

    CERN. Geneva

    2014-01-01

    Nowadays it's quite important never to stop learning, to keep up with the new achievements of your field, especially in IT. Personally, I'm a big fan of meetups, hackathons and competitions. Beside their educative effect, they have a strong social aspect which can boost your motivation and serve as a source of inspiration as well. I'm going to talk about two meetups: Geneva Haskell Meetup, and CERN Coding Sessions. As both of them are excellent platforms to share, learn, inspire and get inspired, I'd like to spread the word about them.

  20. CONFERENCE FOR CERN PENSIONERS

    CERN Multimedia

    GS Department

    2010-01-01

    Wednesday 9 June 2010 from 2.30 p.m. to 5.00 p.m. Auditorium in Building 30 7-018 RESEARCH PROJECT “OPTIMUM BRAIN AGEING” Initial results of the study of the population of CERN pensioners Dr François HERRMANN, Geneva Technology and cognitive decline: prevention and compensation Professor Alain FRANCO, Nice, Vice-President of the IAGG (lnternational Association of Gerontology and Geriatrics) Discussion with the participants Admission free. The presentations will be in French.

  1. Conference for CERN pensioners

    CERN Multimedia

    GS Department

    2010-01-01

    Wednesday 9 June 2010 from 2.30 p.m. to 5.00 p.m. Auditorium in Building 30 7-018 RESEARCH PROJECT “OPTIMUM BRAIN AGEING” Initial results of the study of the population of CERN pensioners Dr François HERRMANN, Geneva Technology and cognitive decline: prevention and compensation Professor Alain FRANCO, Nice, Vice-President of the IAGG (lnternational Association of Gerontology and Geriatrics) Discussion with the participants Admission free. The presentations will be in French.

  2. The DARHT Phase 2 Linac

    CERN Document Server

    Rutkowski, H L; Waldron, W L; Chow, K P; Vella, M C; Fawley, W M; Briggs, R; Nelson, S; Wolf, Z; Birx, D L; Rutkowski, HL; Reginato, LL; Waldron, WL; Chow, KP; Vella, MC; Fawley, WM

    2000-01-01

    The second phase accelerator for the Dual Axis Hydrodynamic Test facility (DARHT) is designed to provide an electron beam pulse that is 2 microsec long, 2kA, and 20 MeV in particle energy. The injector provides 3.2 MeV so that the linac need only provide 16.8 MeV. The linac is made with two types of induction accelerator cells. The first block of 8 cells have a 14 in. beam pipe compared to 10 in. in the remaining 80 cells. The other principal difference is that the first 8 cells have reduced volt-sec in their induction cores as a result of a larger diameter beam pipe. The cells are designed for very reliable high voltage operation. The insulator is Mycalex. Results from prototype tests are given including results from solenoid measurements. Each cell contains a solenoid for beam transport and a set of x-y correction coils to reduce corkscrew motion. Details of tests to determine RF mode impedances relevant to BBU generation are given. Blocks of cells are separated by "intercells" some of which contain transpo...

  3. Indigenous 6 MV medical LINAC

    International Nuclear Information System (INIS)

    Linear Accelerators were made for physics research all over the world; in India too the first indigenous accelerator was made for research of materials using the 3.5 MeV Linear Accelerator in the 1960s at the Tata Institute of Fundamental Research, Mumbai. Prof. R.V.S. Sitaram was the leading scientist who contributed in the development of the first indigenous linac that served research scholars for more than two decades. The travelling wave S-band Linac using a magnetron as a source of high power microwaves was a significant development towards the indigenous accelerator. The accelerating structure had magnetic coils for beam focusing, the HV modulator, microwave system and control unit were indigenously developed by TIFR scientists. Dr. Homi Bhabha, Director, TIFR had taken keen interest in the project and an appropriate room in the basement was selected for the accelerator facility. The Iinac tube cavities, magnetic coils and pulse transformer were designed and fabricated in TIFR laboratory and only raw material was imported. The group working on Radar transmitters developed the transmission line type modulator using components such as charging choke and locally available HV transformers. However, the rectifier diodes, cores switching tubes were imported. The complete system design was done in-house and also included operation and maintenance of the facility. Over its life of two decades, a second generation of technologists were developed with a first hand knowledge of an accelerator system

  4. CERN videonews magazine Nr 2 : December 2002

    CERN Multimedia

    Audiovideo Service

    2002-01-01

    News from :ATRAP experiment's latest achievements. (CERN Bulletin 45/2002) CAST experiment. (CERN Bulletin 35/2002) InDiCo : the European digital conferencing project. (CERN Bulletin 42/2002) CMS : superconducting cable production Diaporama

  5. CERN in "Nature"

    CERN Multimedia

    CERN Bulletin

    2013-01-01

    CERN is nestled within a verdant natural environment which, thanks to a conservation-oriented policy, is characterized by a remarkable biodiversity. The continued protection of that diversity calls for thoughtful, carefully planned measures.   CERN’s site is an extensive one: its 650 hectares include 210 hectares of buildings, roadways and parking lots, 100 hectares of fenced-off green area, and 340 hectares of non-fenced land, a patchwork of fields, woods and pasture. This land teems with a great variety of plants and animals, including some rare and unexpected species. In 2009 CERN received a certificate from the Swiss foundation Nature & économie for the Meyrin site, and the award was renewed in 2012 for three more years. “The green spaces inside the fenced area are tended by six ISS gardeners, whose duties also include keeping the sidewalks and footpaths clear of snow in winter. The Meyrin site also includes orchid sanctuaries, meadows and sheep pasture...

  6. CERN Record Club

    CERN Multimedia

    CERN Record club

    2015-01-01

    Over 2000 DVDs Now Available If you were a member last year, please come along and renew your membership for just 20.- and check out the latest additions, the list is at http://crc.web.cern.ch/crc/public/disc.php?action=search&month=2015/01. If you are not a member, why not come along and have a look, we now have over 2000 DVDs on display covering Action films, Suspense, Drama, Comedy, Sci fi and Childrens. The full catalogue can be consulted at http://cern.ch/crc and for 20.- membership you have access to all of them. There is also a CD selection, Classical music, Jazz and popular; it is not on display but the catalogue is online and you can select what you want and come to the club to collect it. We are open from 12:30 to 13:00 on Mondays, Wednesdays and Fridays and the Club Room is in Restaurant 2, Building 504, near the UBS ATM. We look forward to seeing you.

  7. Industrial services at CERN

    CERN Multimedia

    2002-01-01

    The Bulletin looks at industrial services contracts and the real impact of the cost reductions at CERN. The level of industrial services contracts varies from one phase to another. For example, during the dismantling of LEP (photo) it rose substiantially to fall again at the end of dismantling. Industrial services contracts are an important resource for CERN. The level and nature of such contracts changes according to the phase of operation of the Laboratory. A construction phase, as for the LHC, requires a higher level of industrial services contracts compared with a period of normal running. During the operation of LEP, industrial services contracts were thus maintained at a level of 120 MCHF per year. The level rose to 156 MCHF in 2001 to include contracts awarded for dismantling LEP, and fell to about 144 MCHF in 2002 when the dismantling was complete. During the whole LHC construction period, up to 2007, industrial services spending will be stable in the range 135-140 MCHF per year. For the running pe...

  8. Kayak CERN Club

    CERN Multimedia

    Kayak CERN Club

    2014-01-01

                            Canoë Kayak CERN (CKC) Mikko Karppinen Vainqueur de la Maxi Kayak Pour la première édition de la course maxi kayak d’Annecy dimanche 1er juin, organisée par l’association Kayak sans Frontières, trois membres du Canoë Kayak CERN prenaient le départ de la boucle de 34kms autour du lac, Nicolas Roget qui après 23kms d’effort dû abandonner suite à plusieurs dessalages dans la partie la plus mouvementée du lac, René Dague franchissait la ligne d’arrivée après 3h15 de course se classant à la 10ème place juste devant l’ancien champion du monde de slalom Jacques Calori...

  9. Disk storage at CERN

    CERN Document Server

    Mascetti, L; Chan, B; Espinal, X; Fiorot, A; Labrador, H Gonz; Iven, J; Lamanna, M; Presti, G Lo; Mościcki, JT; Peters, AJ; Ponce, S; Rousseau, H; van der Ster, D

    2015-01-01

    CERN IT DSS operates the main storage resources for data taking and physics analysis mainly via three system: AFS, CASTOR and EOS. The total usable space available on disk for users is about 100 PB (with relative ratios 1:20:120). EOS actively uses the two CERN Tier0 centres (Meyrin and Wigner) with 50:50 ratio. IT DSS also provide sizeable on-demand resources for IT services most notably OpenStack and NFS-based clients: this is provided by a Ceph infrastructure (3 PB) and few proprietary servers (NetApp). We will describe our operational experience and recent changes to these systems with special emphasis to the present usages for LHC data taking, the convergence to commodity hardware (nodes with 200-TB each with optional SSD) shared across all services. We also describe our experience in coupling commodity and home-grown solution (e.g. CERNBox integration in EOS, Ceph disk pools for AFS, CASTOR and NFS) and finally the future evolution of these systems for WLCG and beyond.

  10. The colours of CERN

    CERN Multimedia

    Laëtitia Pedroso

    2010-01-01

    Would you move into an office painted in a colour you hate? As we all know, taste in colour is individual. Thanks to the establishment of a new Painting Charter, conflicting opinions will be unified.   The four new paint colours established in the Painting Charter. There were many reasons behind the creation of the Painting Charter by the GS SEM Department. Unlike many companies, CERN has not until now regulated which colours can be used inside buildings. With many nationalities passing through CERN, tastes tend to differ: northern countries usually prefer colder colours, while southern countries seem to prefer warm colours. It’s not hard to imagine how quickly we could make a rainbow! In addition, whenever an office needs to be repainted, it can be difficult to find exactly the same colour. This results in entire walls being repainted, which increases the cost. If – by chance – the original colour is found, it could be out of stock. While ...

  11. CERN Yachting club

    CERN Multimedia

    CERN Yachting club

    2015-01-01

    Surely among the most active sports clubs within CERN, the Yachting Club has had a steadily increasing membership over a decade; it is now around 350 but new members are always welcome, especially now at the beginning of a season. Indeed, with the Lottery for places in courses which are one of our highlights, membership has jumped since mid-March. The Lottery is always heavily oversubscribed, which we like to think represents its good reputation for quality of teaching and good fun at the same time. Now those lucky new students are in contact with their teachers, will be buying wetsuits in some cases (dinghy and catamaran courses), joining us for the launch of the fleet (see calendar on website at http://yachting.web.cern.ch/yachting/ycc_home.html ) and  – in many cases – learning sailing as complete beginners. Those Lottery-unlucky can still plan a fun season, with our Thursday Practice evenings, where we can almost always place everyone on a boat for an outing.   ...

  12. Italy at CERN

    CERN Multimedia

    Caroline Laignel

    2005-01-01

    15 - 17 November 2005 Main Building Bldg 60 - ground and 1st floor 09:00 - 17:30 Twenty-six companies will present their latest technology at the "Italy at CERN" exhibition. Italian industry will exhibit products and technologies which are related to the field of particle physics.The main subjects are: electrical engineering, electronics, logistics, mechanical engineering, vacuum and low-temperature technology. The exhibition is being organised by the INFN in Padua.The exhibitors are listed below.A detailed programme will be available in due course : from your Departmental secretariat, at the exhibition, on the FI homepage http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS  Ansaldo Superconduttori Spa CAEN Spa CECOM Snc Consorzio Canavese Export CPE Italia Spa Criotec Impianti Srl CTE Sistemi Srl Carpenteria S. Antonio Spa E.E.I. Equipaggiamenti Elettronici Industriali Elettronica Conduttori Srl Goma Elettronica Spa ICAR Spa Intercond Spa Kenotec Srl O...

  13. France at CERN

    CERN Multimedia

    GS Department

    2010-01-01

    Industrial Exhibition Administration Building Bldg 61 Tuesday 8 June: 9 a.m. – 5.30 p.m. Wednesday 9 June: 9 a.m. – 4 p.m. “FRANCE AT CERN” – INDUSTRIAL EXHIBITION Thirty-six French companies are presenting their latest technological advances during the industrial exhibition "France at CERN", featuring products and technologies specifically related to the activities of the CERN facility. Presenting their know-how in electric vehicles, PSA - PEUGEOT/CITROEN are sponsoring the event. Seminars will be hold in the Main Building’s conference rooms: R&D innovation strategy in Pôle Nucléaire Bourgogne (08/06/2010 – 13h) MU by Peugeot (08/06/2010 – 14h) Citroën (08/06/2010 – 15h) « Elément 14 » : a unique design engineer community for sharing Electronic Engineering Solutions (09/06/2010 – 11h) Individual B2B meetin...

  14. EUCYS prizewinner visits CERN

    CERN Multimedia

    Jennifer Toes

    2016-01-01

    Young Turkish student Baris Volkan Gürses visited CERN from 4 to 8 July after winning the prize in the 2015 European Contest for Young Scientists (EUCYS).    Baris Volkan Gürses, EUCYS prizewinner, visiting the Microcosm. After winning both regional and national competitions in Turkey, 18-year-old student Baris Volkan Gürses competed against 169 young scientists and was awarded a visit to CERN by EIROforum for his physics project in EUCYS 2015. His project, entitled “Generation of artificial gravity by using electrostatic force for prevention of muscle atrophy and osteoporosis occurring in gravity-free environments”, focused on the design of a mechanism to help with the impact of spaceflight on the human body. “My objective was to eliminate the negative effects of a gravity-free environment on astronauts who stay in space for longer periods of time, like in the International Space Station,” explained Volkan. &...

  15. Kofi Annan visits CERN

    CERN Multimedia

    Katarina Anthony

    2011-01-01

    On Tuesday 13 September, former Secretary-General of the United Nations and Nobel Peace Laureate Kofi Annan paid a visit to CERN.   Arriving in the early afternoon, Kofi Annan and his family were greeted by Director-General Rolf Heuer on the steps of Building 500. After a quick introduction to the Laboratory, they were whisked off to SM18 for a tour of the LHC’s superconducting magnet test hall, guided by Technology Department Head Frédérick Bordry. After a light lunch in Restaurant 2, Kofi Annan added his signature to CERN’s Guest Book. He is the second UN Secretary-General to add their name to CERN’s roster; his successor Ban Ki-Moon’s visited CERN in 2008.  Kofi Annan was then guided by spokesperson Fabiola Gianotti on a tour of ATLAS’s Visitor Centre. This was an opportunity for some of the younger members of the ATLAS collaboration to meet the former Secretary-General and to answer his questions about the exper...

  16. New auditorium for CERN

    CERN Multimedia

    Laëtitia Pedroso

    2010-01-01

    Since September 2009 the PH and GS Departments have been working very closely together on the renovation project for Building 222. The building is now being transformed into an auditorium with a seating capacity of 200. Work began on 15 November 2009 and will be completed just in time for the first conferences.   The conference room in B222 a few days ago. After 20 years as premises for the filtering and purification of CERN's drinking water and three years as a hall for the reception tests and testing of electronic equipment for the LHC experiments, Building 222 is about to get another new lease of life. Only the Main Auditorium and the Globe have seating capacities in excess of 200 at CERN. “The problem of the lack of conference rooms with such a seating capacity was raised at the end of 2008 by the PH Department, which proposed this idea. The project was entrusted to the GS Department in 2009,” explains Barthélemy Gossuin, an engineer in the GS Department who is...

  17. CERN@school

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    CERN’s educational programmes have inspired large numbers of physics teachers all over Europe to adopt innovative approaches to teaching.  Becky Parker, a former participant in the High School Teachers (HST) programme, has set up the CERN@school project, in which students are using Medipix chips to study cosmic rays. They have recently designed and are building Lucid, a detector that will be launched into space in 2011.   The LUCID detector designed by the Langton school. Take a school with the declared aim of ‘providing learning experiences which are enjoyable, stimulating and challenging and which encourage critical and innovative thinking’. Add to that a motivated teacher who wants to put it into practice and you have the perfect seeds for growing a new generation of young researchers. Becky Parker came to CERN in 2007. She observed how cutting-edge research is done here and decided to export it to her school. However, she didn’t just go back t...

  18. CERN Croquet Club

    CERN Document Server

    Staff Association

    2015-01-01

    CERN Croquet Club plays from April to October on two grass courts, on a par with golf greens, on the Prévessin site, where we have a clubhouse with bar and barbecue facilities. Lawn bowls is also played there. Croquet involves using a long mallet to hit one’s balls through a series of narrow hoops. Accuracy is needed, as well as a grasp of tactics. Games are singles or doubles. We play both Association croquet, the original complex game which requires a fairly long apprenticeship, and Golf croquet, a version which moves along more quickly and is easy to learn. Coaching is provided. Membership is open to anyone, whether CERN employees or not. We organise several internal club competitions, including a monthly mini-league, and members also play in Swiss Championships.  The Swiss team plays a number of international matches each year, at home or away, against England, Scotland, Wales, Italy, Belgium, Austria and Germany. Swiss champions play in the European and World Golf croq...

  19. CERN CINE CLUB

    CERN Multimedia

    CERN CINE CLUB

    2010-01-01

    CERN CINE CLUB Thursday 24 June 2010 at 20:30 / Jeudi 24 Juin 2010 à 20:30 CERN Main Auditorium / Amphithéâtre Principal   The Raggedy Rawney By/de : Bob Hoskins (UK, 1988) - 104 min With/avec: Dexter Fletcher, Bob Hoskins, David Hill, Zoe Nathanson, Zoe Wanamaker Bob Hoskins makes his directorial debut with this lyrical, mystical fable about the strength of family and the transcendence of love. When a young military recruit named Tom goes AWOL after his first taste of battle, he must disguise himself with face paint and women’s clothing to avoid being captured by his vengeful commanding officer. He is instead discovered and taken in by Darky, the leader of an eccentric group of traveling gypsies, who thinks he is a «rawney», a half-mad, half-magical woman who brings good fortune. But when Tom begins a love affair with Darky’s daughter, he sets off a chain reaction of events that will soon put all of their lives in grave ...

  20. CERN apprentice receives award

    CERN Multimedia

    2008-01-01

    Another CERN apprentice has received an award for the quality of his work. Stéphane Küng (centre), at the UIG ceremony last November, presided over by Geneva State Councillor Pierre-François Unger, Head of the Department of Economics and Health. Electronics technician Stéphane Küng was honoured in November by the Social Foundation of the Union Industrielle Genevoise (UIG) as one of Geneva’s eight best apprentices in the field of mechatronics. The 20-year-old Genevan obtained his Federal apprentice’s certificate (Certificat fédéral de capacité - CFC) in June 2007, achieving excellent marks in his written tests at the Centre d’Enseignement Professionnel Technique et Artisanal (CEPTA). Like more than 200 youngsters before him, Stéphane Küng spent part of his four-year sandwich course working at CERN, where he followed many practical training courses and gained valuable hands-on experience in various technical groups and labs. "It’ always very gr...

  1. Steven Weinberg visits CERN

    CERN Multimedia

    2009-01-01

    Steven Weinberg visiting the ATLAS cavern accompanied by Peter JenniIt was no surprise that the CERN audience arrived early in the Globe of Science and Innovation for the colloquium on 7 July. Nobel laureate Steven Weinberg is one of the major contributors to the Standard Model of particle physics. He received the Nobel Prize for Physics in 1979 for his work on the unified theory of the electromagnetic and weak interactions, one of the essential pillars of the Standard Model. After lunch at CERN and a visit to ATLAS, Weinberg gave a colloquium on "The Quantum Theory of Fields: Effective or Fundamental" to a packed audience. In his talk, he looked at how the use of quantum field theory in particle physics has fluctuated in popularity since Paul Dirac first introduced the approach to describe the interaction of particles with electromagnetic fields in the late 1920s. In particular, he posed the question: Is quantum field theory fundamental or does it a...

  2. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    On 7 April CERN will be holding a symposium to mark the 75th birthday of Carlo Rubbia, who shared the 1984 Nobel Prize for Physics with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. Following a presentation by Rolf Heuer, lectures will be given by eminent speakers on areas of science to which Carlo Rubbia has made decisive contributions. Michel Spiro, Director of the French National Institute of Nuclear and Particle Physics (IN2P3) of the CNRS, Lyn Evans, sLHC Project Leader, and Alan Astbury of the TRIUMF Laboratory will talk about the physics of the weak interaction and the discovery of the W and Z bosons. Former CERN Director-General Herwig Schopper will lecture on CERN’s accelerators from LEP to the LHC. Giovanni Bignami, former President of the Italian Space Agency, will speak about his work with Carlo Rubbia. Finally, Hans Joachim Schellnhuber of the Potsdam Institute for Climate Research and Sven Kul...

  3. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    On 7 April CERN will be holding a symposium to mark the 75th birthday of Carlo Rubbia, who shared the 1984 Nobel Prize for Physics with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. Following a presentation by Rolf Heuer, lectures will be given by eminent speakers on areas of science to which Carlo Rubbia has made decisive contributions. Michel Spiro, Director of the French National Institute of Nuclear and Particle Physics (IN2P3) of the CNRS, Lyn Evans, sLHC Project Leader, and Alan Astbury of the TRIUMF Laboratory will talk about the physics of the weak interaction and the discovery of the W and Z bosons. Former CERN Director-General Herwig Schopper will lecture on CERN’s accelerators from LEP to the LHC. Giovanni Bignami, former President of the Italian Space Agency and Professor at the IUSS School for Advanced Studies in Pavia will speak about his work with Carlo Rubbia. Finally, Hans Joachim Sch...

  4. What's new @CERN ?

    CERN Multimedia

    CERN video productions

    2011-01-01

    Le 30 mars 2010 – une date désormais gravée dans le marbre – le jour où le LHC, le grand collisionneur de hadrons, soit le plus puissant accélérateur de particules au monde a commencé à fonctionner à des énergies inédites. Depuis, les collisions s’enchainent avec la promesse de découvertes. Dans cette édition de What’s new at CERN?, nous allons faire le bilan des performances de cette machine et parler de son mode d’exploitation qui va changer dans quelques jours. Les mots clés de cette émission ? Performances – expériences – ions - protons - avenir Tout cela en compagnie de Steve Myers, directeur du CERN pour les accélérateurs et la technologie, et de Yves Schutz, physicien de l’expérience ALICE.

  5. Italy au CERN

    CERN Multimedia

    FI Department

    2008-01-01

    4 – 6 March 2008 Main Building Bldg 60 - ground and 1st floor 09.00 hrs - 17.30 hrs Nineteen companies will present their latest technology at the "Italy at CERN" exhibition. Italian industry will exhibit products and technologies related to the field of particle physics. The main subjects are civil engineering and buildings, data processing, electrical engineering, electronics, industrial support, mechanical engineering, particle detectors and vacuum and low-temperature technology. The exhibition is being organised by the INFN of Padova. The exhibitors are listed below. More details on the firms can be found at the following link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS Boffetti Impianti S.r.l. Bozzi & Figli S.r.l. C.A.E.N. S.p.A. Cavicel S.p.A. Comecer S.p.A. E.E.I. Elettronica Conduttori S.r.l. Euromec S.r.l. Eurotech S.p.A. IRST Fondazione Bruno Kessler IVG Colbacchini S.p.A. Krohne Italia S.r.l. Luvata For...

  6. ITALY AT CERN

    CERN Multimedia

    FI Department

    2008-01-01

    4 – 6 March 2008 Main Building Bldg 60 - ground and 1st floor 09.00 hrs - 17.30 hrs Nineteen companies will present their latest technology at the "Italy at CERN" exhibition. Italian industry will exhibit products and technologies related to the field of particle physics. The main subjects are civil engineering and buildings, data processing, electrical engineering, electronics, industrial support, mechanical engineering, particle detectors and vacuum and low-temperature technology. The exhibition is being organised by the INFN of Padova. The exhibitors are listed below. More details on the firms can be found at the following link: http://fi-dep.web.cern.ch/fi-dep/structure/memberstates/exhibitions_visits.htm LIST OF EXHIBITORS Boffetti Impianti S.r.l. Bozzi & Figli S.r.l. C.A.E.N. S.p.A. Cavicel S.p.A. Comecer S.p.A. E.E.I. Elettronica Conduttori S.r.l. Euromec S.r.l. Eurotech S.p.A. IRST Fondazione Bruno Kessler IVG Colbacchini S.p.A. Krohne Italia S.r.l. Luvata For...

  7. CERN Diabetes Awareness Days

    CERN Multimedia

    2005-01-01

    Do you have diabetes without knowing it? Following last year's successful campaign, the CERN Infirmary has organised two further diabetes prevention and screening days on 10th & 11th October 2005 from 9am to 4pm (INFIRMARY, Bldg 57, ground floor) open to everyone working on the CERN site who was unable to participate in 2004. Testing of blood pressure, cholesterol and sugar levels, Body Mass Index, etc. Information - documentation - personal and individual advice. Presence of a dietician from 2 p.m. to 4 p.m. In cooperation with the NOVAE, DSR & AVENANCE restaurants Diabetes is reaching epidemic proportions in many countries and, if not diagnosed sufficiently early, can be a major cause of blindness and of heart and kidney disease, etc. Prevention is possible through screening and life-style changes such as improved dietary habits and regular physical exercise. Diabetes is not a serious condition in itself if it is diagnosed and treated early enough but it can have very serious consequences...

  8. CERN diabetes awareness days

    CERN Multimedia

    2005-01-01

    Do you have diabetes without knowing it? Following last year's successful campaign, the CERN Infirmary has organised two further diabetes prevention and screening days on 10th & 11th October 2005 from 9am to 4pm (INFIRMARY, Bldg 57, ground floor) open to everyone working on the CERN site who was unable to participate in 2004. Testing of blood pressure, cholesterol and sugar levels, Body Mass Index, etc. Information - documentation - personal and individual advice. Presence of a dietician from 2 p.m. to 4 p.m. In cooperation with the NOVAE, DSR & AVENANCE restaurants. Diabetes is reaching epidemic proportions in many countries and, if not diagnosed sufficiently early, can be a major cause of blindness, heart and kidney disease, etc. Prevention is possible through screening and life-style changes such as improved dietary habits and regular physical exercise. Diabetes is not a serious condition in itself if diagnosed and treated early enough but it can have very serious consequences if und...

  9. GERMANY AT CERN

    CERN Multimedia

    2001-01-01

    13 - 15 November 2001 Administration Building Bldg 60 - ground and 1st floor 09.00 hrs - 17.30 hrs OPENING CEREMONY 10h00 - 13 November GERMANY AT CERN Thirty-three German companies will be demonstrating their supplies and services offered for the construction of the Large Hadron Collider (LHC) and other key CERN programmes. The Industrial exhibition will be enriched with a display of objects of contemporary German art. The official German presentation is under the patronage of the Federal Minister of Education and Research (BMBF), Bonn. There follows : the list of exhibitors, the list of lectures to be given at the exhibition. A detailed programme will be available in due course at : your Divisional Secretariat, the Reception information desk, building 33, the exhibition. LIST OF EXHIBITORS Accel Instruments GmbH Representative: 1.1 Accel Instruments GmbH/CH-8754 Netsal apra-norm Elektromechanik GmbH Representative: 2.1 apra-norm s.n.c./F-67500 Haguenau Babcock Noell Nuclear GmbH Balcke-D&u...

  10. 2013 CERN Road Race

    CERN Multimedia

    Klaus Hanke

    2013-01-01

    The 2013 edition of the annual CERN Road Race will be held on Wednesday 18 September at 18.15.   The 5.5 km race takes place over 3 laps of a 1.8 km circuit in the West Area of the Meyrin site, and is open to everyone working at CERN and their families. There are runners of all speeds, with times ranging from under 17 to over 34 minutes, and the race is run on a handicap basis, by staggering the starting times so that (in theory) all runners finish together. Children (< 15 years) have their own race over 1 lap of 1.8 km. As usual, there will be a “best family” challenge (judged on best parent + best child). Trophies are awarded in the usual men’s, women’s and veterans’ categories, and there is a challenge for the best age/performance. Every adult will receive a souvenir prize, financed by a registration fee of 10 CHF. Children enter free (each child will receive a medal). More information, and the online entry form, can be found at: htt...

  11. 2013 CERN Road Race

    CERN Multimedia

    Klaus Hanke

    2013-01-01

    The 2013 annual CERN Road Race will be held on Wednesday 18 September at 6.15 p.m.   The 5.5 km race takes place over 3 laps of a 1.8 km circuit in the West Area of the Meyrin site, and is open to everyone working at CERN and their families. There are runners of all speeds, with times ranging from under 17 to over 34 minutes, and the race is run on a handicap basis, by staggering the starting times so that (in theory) all runners finish together. Children (< 15 years) have their own race over 1 lap of 1.8 km. As usual, there will be a “best family” challenge (judged on best parent and best child). Trophies are awarded in the usual men’s, women’s and veterans’ categories, and there is a challenge for the best age/performance. Every adult will receive a souvenir prize, financed by a registration fee of 10 CHF. Children enter free (each child will receive a medal). More information, and the online entry form, can be found here.

  12. By boat to CERN

    CERN Multimedia

    2009-01-01

    Hello, my name is Jordan Juras. I will be here at CERN for a 2-month period spanning mid-June through mid-August working as Student Journalist for The Bulletin. This is a conventional position, but the manner with which I arrived at CERN is quite the opposite. Sitting at work one May 12th morning, I came across a Bulletin article (No. 20-21/2009) while perusing the LHC website. It was advertising ‘Fisica in Barca in Europe 2009’. They were looking for physicists living along the Mediterranean coast between Lisbon and Genoa to help out with the programme. Though I do not hold the title of physicist, nor do I live in Europe (in fact I live just outside of Harrow, Ontario, Canada), I felt compelled to write an email, expressing my love for physics and my interest in helping out with the programme. To my surprise, my help on board was welcome, and I managed to find some discount airfare and I set out for the South of Italy to meet the boat in Bari. Between Bari and Tries...

  13. Cern Wowen's Club

    CERN Document Server

    Club des Cernoises

    2014-01-01

    Cern Wowen's Club Coffee Morning Tuesday 11th February 2014, 9:00 – 11:00 Bldg 504 (Restaurant No 2 – DSR) 1st Floor, Club Room 3 Celebration of the 40th Anniversary of the Club   Those interested in helping should come along. New arrivals and all members are cordially invited. You can enrol for membership, renew membership, find out about and sign up for our activities. Visit our website: http://club-womensclub.web.cern.ch/Club-WomensClub/     Club des Cernoises Coffee Morning Mardi  11 février 2014, 9 h. – 11 h. Bât. 504 (Restaurant No 2 – DSR) 1er étage, Salle 3 du Club Célébration du 40ème anniversaire du Club Toutes celles qui désirent nous aider sont les bienvenues. Les nouvelles venues et  tous les membres sont invités au Coffee Morning. Vous pourrez adhérer au Club, renouveler  votre cot...

  14. Preserving CERN's legacy

    CERN Multimedia

    Antonella Del Rosso

    2015-01-01

    At CERN, scientists from all over the world design and build innovative instruments to be implemented in the cutting-edge machines used in high-energy physics. Those instruments go on to become part of the world’s most powerful accelerators, Nobel-prize-winning detectors, unique antimatter machines, the first web servers… These are historical pieces and belong to our common heritage. But, what happens to them once they are no longer in use?   New endeavours consistently require new technical developments, and the list of “old” objects belonging to a laboratory like CERN increases over time. As innovative as they might have been when they were created, they are often bulky, sometimes very delicate, and do not always look like everyday tools when they are dismantled. How best to deal with them? “A database of objects suitable for scientific exhibitions has been available on CDS for many years,” says Gigi Rolandi, Chair of CER...

  15. Monitoring Evolution at CERN

    Science.gov (United States)

    Andrade, P.; Fiorini, B.; Murphy, S.; Pigueiras, L.; Santos, M.

    2015-12-01

    Over the past two years, the operation of the CERN Data Centres went through significant changes with the introduction of new mechanisms for hardware procurement, new services for cloud provisioning and configuration management, among other improvements. These changes resulted in an increase of resources being operated in a more dynamic environment. Today, the CERN Data Centres provide over 11000 multi-core processor servers, 130 PB disk servers, 100 PB tape robots, and 150 high performance tape drives. To cope with these developments, an evolution of the data centre monitoring tools was also required. This modernisation was based on a number of guiding rules: sustain the increase of resources, adapt to the new dynamic nature of the data centres, make monitoring data easier to share, give more flexibility to Service Managers on how they publish and consume monitoring metrics and logs, establish a common repository of monitoring data, optimise the handling of monitoring notifications, and replace the previous toolset by new open source technologies with large adoption and community support. This contribution describes how these improvements were delivered, present the architecture and technologies of the new monitoring tools, and review the experience of its production deployment.

  16. Bulgarians@cern.ch

    CERN Multimedia

    2000-01-01

    The happy Bulgarian family. From left to right, last row to first row: Ilka Antcheva, Georgi Antchev, Dimitri Borilkov, Ivana Hristova, Petiu Petev, Peicho Petkov, Borislav Pavlov, Peter Hristov, Mihail Tchijov, Stefan Piperov, Ekaterina Ivanova, Dimitar Kolev, Roumen Tzenov. Bobby is striding along with his white sneakers, black trousers belted high at the waist and a blue shirt buttoned up to the top. He comes to the coffee table and sits down on the chair crossing his legs. While speaking he fiddles with his glasses and his black curly hair dangles on the sides of his head. Borislav Pavlov or Bobby is a 22 year old Bulgarian summer Physics student at Sofia University and came to CERN to work on ORCA reconstruction software for the CMS experiment. “I will do my thesis on ORCA and it is so good that I can be here, work here where the projects actually happen and exchange experience with the people working here,” he says. “It is an honor for me.” Bulgaria joined CERN as a member state in 1999 but Bulgar...

  17. Lectures for CERN pensioners

    CERN Multimedia

    GS Department

    2009-01-01

    The Medical Service and the CERN and ESO Pensioners Association invite CERN pensioners to a series of presentations given by professors and specialists at the University Teaching Hospitals and the Faculty of Medicine at the University of Geneva on the subject of: PROMOTION OF OPTIMUM BRAIN AGEING The final series of presentations will be held in CERN’s Main Auditorium (Building 500) on: Wednesday, 25 February 2009, from 2:30 p.m. to 4:30 p.m. What is cerebral reserve ? Historique et importance de la notion de «réserve cérébrale» Prof. Ezio GIACOBINI Intervention de la réserve cérébrale sur les troubles de la cognition Prof. Jean-Pierre MICHEL Comment est-il possible d’évaluer la réserve cérébrale? Prof. Gabriel GOLD Projet de recherche «Optimum Brain Ageing» - Aspects méthodologiques - Dr François HERRMANN -\tAspects pratiques - Dr Dina ZEKRY The presentations will be given in French with overheads in English and will be followed by a wide-rangin...

  18. Lectures for CERN pensioners

    CERN Multimedia

    GS Department

    2009-01-01

    The Medical Service and the CERN and ESO Pensioners Association invite CERN pensioners to a series of presentations given by professors and specialists at the University Teaching Hospitals and the Faculty of Medicine at the University of Geneva on the subject of: PROMOTION OF OPTIMUM BRAIN AGEING The final presentation will be given in CERN’s Main Auditorium (Building 500) on: Wednesday, 25 February 2009, from 2:30 p.m. to 4:30 p.m. What is cerebral reserve ? Historique et importance de la notion de «réserve cérébrale» - Prof. Ezio GIACOBINI Intervention de la réserve cérébrale sur les troubles de la cognition - Prof. Jean-Pierre MICHEL Comment est-il possible d’évaluer la réserve cérébrale? - Prof. Gabriel GOLD Projet de recherche «Optimum Brain Ageing» - Aspects méthodologiques - Dr François HERRMANN - Aspects pratiques - Dr Dina ZEKRY The presentations will be given in French with overheads in English and will be followed by a wide-ranging disc...

  19. Lectures for CERN pensioners

    CERN Multimedia

    GS Department

    2009-01-01

    The Medical Service and the CERN and ESO Pensioners Association invite CERN pensioners to a series of presentations given by professors and specialists at the University Teaching Hospitals and the Faculty of Medicine at the University of Geneva on the subject of: PROMOTION OF OPTIMUM BRAIN AGEING The final series of presentations will be held in CERN’s Main Auditorium (Building 500) on: Wednesday, 25 February 2009, from 2:30 p.m. to 4:30 p.m. What is cerebral reserve ? Historique et importance de la notion de «réserve cérébrale» Prof. Ezio GIACOBINI Intervention de la réserve cérébrale sur les troubles de la cognition Prof. Jean-Pierre MICHEL Comment est-il possible d’évaluer la réserve cérébrale ? Prof. Gabriel GOLD Projet de recherche «Optimum Brain Ageing» -\tAspects méthodologiques - Dr François HERRMANN -\tAspects pratiques - Dr Dina ZEKRY The presentations will be given in French with overheads in English and will be followed by a wide-rangi...

  20. Celebrating diversity at CERN

    CERN Multimedia

    2014-01-01

    With international women’s day coming up on 8 March, along with the recent appointment of a new Diversity Programme Leader, it seems timely to take a look at how far we’ve come over recent years in promoting gender equality at CERN. In short, the news is good, but we still have some way to travel.   CERN does not have a policy of positive discrimination, but rather one of presenting a level playing field. We work to ensure, for example, that the diversity of candidates presented for interview reflects the diversity of applicants. It’s an approach that is having the desired effect. Overall, the percentage of female staff members has risen from 17% to 20% over the last decade, with parity being achieved among professional administrators and significant advances being made among research and applied physicists, engineers and technicians. At recruitment, our approach is working: we’re managing to attract growing numbers of women. This brings us to the phen...

  1. Thomas Kibble visits CERN

    CERN Multimedia

    Rosaria Marraffino

    2014-01-01

    Emeritus Professor Sir Thomas W.B. Kibble, from Imperial College London visited LHC for the first time last week and delivered a colloquium on the genesis of electroweak unification and the Brout-Englert-Higgs mechanism.   From left to right: Jim Virdee, Tiziano Camporesi, Tom Kibble and Austin Ball on the visit to CMS. On his way back from Trieste, where he received the Abdus Salam International Centre for Theoretical Physics' Dirac Medal, Tom Kibble stopped by CERN for his first visit to the LHC. Kibble had a standing invitation from Jim Virdee, former CMS spokesperson, who is also a researcher from Imperial College London. Peter Jenni (left) and Tom Kibble tour the ATLAS detector. (Image: Erwan Bertrand) Kibble made the trip to CERN a family outing and brought along 14 relatives,  including his children and grandchildren. He visited the ATLAS detector with Peter Jenni, its former spokesperson, on Friday 10 October. In the afternoon, Kibble delivered a colloquium in the...

  2. Developers@CERN Forums: Python

    CERN Document Server

    CERN. Geneva

    2016-01-01

    The Developers@CERN Forums second edition took place at the end of May on the topic of Python. How do developers at CERN interact with Python? Which cutting-edge projects are using Python? What were the highlights of this most recent forum?

  3. Council celebrates CERN Control Centre

    CERN Multimedia

    2006-01-01

    With the unveiling of its new sign, the CERN Control Centre was officially inaugurated on Thursday 16 March. To celebrate its startup, CERN Council members visited the sleek centre, a futuristic-looking room filled with a multitude of monitoring screens.

  4. News regarding Mobility at CERN

    CERN Multimedia

    2016-01-01

    CERN Bikes CERN owns a fleet of more than 500 bikes, managed by the Mobility Centre (bdg. 6167). Members of CERN personnel (MPE and MPA) can use these free of charge during work-related activities at CERN (a security deposit is requested). Between 1st of June to 30th September anyone, except Summer Students, who wish to benefit from this service shall pay 1 CHF per day. As from the 1st of August, the CERN bike rental requests are done via the Service Now (SNOW) Portal. For more information, please consult: http://cern.ch/bike-rental.   CERN Cars More than 60 vehicles are available for rent by members of personnel (MPE and MPA) at the Mobility Center (bdg. 6167). As from the 5th of September you can submit reservation requests via the new EDH Car Rental Request document. As a reminder, the Terms of Use are the following: Operational Circular n° 4 (rev.1), governing the use of CERN vehicles;   Any use of the service must be authorised by the concerned Head of Department or Team Leader...

  5. CERN Diversity Newsletter - July 2015

    CERN Document Server

    Kaltenhauser, Kristin; CERN. Geneva. HR Department

    2015-01-01

    The first official edition of the CERN Diversity Newsletter, informing on recent and ongoing diversity activities, and interesting reads, videos and other links related to diversity. Subscribe here: https://diversity.web.cern.ch/2015/07/subscribe-diversity-newsletter

  6. Bulgarians sue CERN for leniency

    CERN Multimedia

    König, R

    2001-01-01

    Bulgaria is appealing to CERN to drastically reduce its contribution to CERN for the next two years. The NATO bombing campaign against Yugoslavia in 1999 destroyed enough bridges on the river Danube to cripple commerce between Bulgaria and Western Europe, damaging the economy and squeezing the government's budget (1/2 page).

  7. Cooperation between CERN and ITER

    CERN Multimedia

    CERN Audiovisual Service

    2008-01-01

    CERN and the International Fusion Organisation ITER have just signed a first cooperation agreeement. The Director-General of the International Fusion Energy Organization, Mr Kaname Ikeda, and CERN Director-General, Robert Aymar, signed a cooperation agreement at a meeting on the Meyrin site on Thursday 6 March.

  8. CERN at the Post Office

    CERN Multimedia

    2006-01-01

    In collaboration with CERN and the Conseil général de l'Ain, the French postal services of the Pays de Gex have released a new set of pre-paid envelopes paying tribute to CERN. The envelopes, which come in packets of ten, each featuring a different aspect of CERN, will be on sale from 6 June onwards. They will be available from five post offices in the Pays de Gex (Ferney-Voltaire, Prévessin-Moëns, Saint-Genis-Pouilly, Thoiry and CERN-Prévessin), as well as from the CERN Shop (Reception, Building 33). The envelopes were unveiled at an official ceremony on 23 May, which was attended by Jocelyne Boch, Vice-President of the Conseil général de l'Ain and Mayoress of Thoiry, as well as Marina Combe, Head of the Saint-Genis-Pouilly, Thoiry and CERN-Prévessin post offices, and Maximilian Metzger, CERN's Secretary-General. The last set of envelopes to feature CERN, which commemorated the Laboratory's 50th anniversary in 2004, were a huge success, with sales totalling 35 000 in less than a year. 'We received...

  9. CERN internal communication is evolving

    CERN Multimedia

    2016-01-01

    CERN news will now be regularly updated on the CERN People page (see here).      Dear readers, All over the world, communication is becoming increasingly instantaneous, with news published in real time on websites and social networks. In order to keep pace with these changes, CERN's internal communication is evolving too. From now on, you will be informed of what’s happening at CERN more often via the “CERN people” page, which will frequently be updated with news. The Bulletin is following this trend too: twice a month, we will compile the most important articles published on the CERN site, with a brand-new layout. You will receive an e-mail every two weeks as soon as this new form of the Bulletin is available. If you have interesting news or stories to share, tell us about them through the form at: https://communications.web.cern.ch/got-story-cern-website​. You can also find out about news from CERN in real time...

  10. Linac Upgrades for FERMI@ELETTRA

    CERN Document Server

    D'Auria, G; Craievich, P; De Ninno, G; Di Mitri, S; Ferianis, M; Pangon, G; Rumiz, R L; Tosi, T L; Zangrando, D

    2004-01-01

    To fulfill the stringent requirements expected from the FERMI project, the existing Linac needs some modifications in the layout and an upgrading of the present plants. Moreover, for the next two years, until the new injection system (now under construction) is fully commissioned, the Linac has to be kept in operation as injector for the ELETTRA Storage Ring. Therefore most of the planned activities have to be carried out without interfering with the normal operation of the machine. Details on the new Linac layout and related activities are discussed.

  11. Wire alignment system for ATF LINAC

    International Nuclear Information System (INIS)

    A wire based alignment system is adopted to make less than 40μm precision alignment for injector linac of Accelerator Test Facility (ATF). The system consists of two stretched SUS wires, pickup coils and active mover stages. The position of pickup coils in a mount which will be installed into LINAC stages is set to the calculated wire position prior to installation. All of LINAC stages are then moved to keep the calculated position by the active mover. The test results of wire position detection in a long term are described. (author)

  12. The SNS super conducting linac architecture

    International Nuclear Information System (INIS)

    A new Spallation Neutron Source (SNS) is presently under construction at the Oak Ridge National Laboratory in Tennessee. A conventional linac, accelerates a 52-mA beam to 186 MeV. The SRF linac accelerates the beam to 1.25 GeV using 117 elliptically shaped 6 cell cavities. Two cavity beta types are used, with geometrical betas of 0.61 and 0.81. This paper describes the optimization leading to the choice of cavity betas and number of different cavity types. Also, beam-dynamics throughout the entire linac are presented. (author)

  13. Superconducting LINAC booster for the Mumbai pelletron

    Indian Academy of Sciences (India)

    B Srinivasan; S K Singh; R G Pillay; M P Kurup; M K Pandey

    2001-08-01

    We are in the process of constructing a superconducting linear accelerator (LINAC), to boost the energy of heavy ion beams from the 14UD Pelletron accelerator, at Tata Institute of Fundamental Research, Mumbai. The accelerating structures in the LINAC are quarter wave resonators (QWR) coated with lead which is superconducting at liquid helium temperature. With feasibility studies having been completed during the course of the 4th and 5th five-year plan periods, culminating with the demonstration of beam acceleration using one accelerating module, the construction of the LINAC is now under way.

  14. The superconducting linac booster at the ANU

    International Nuclear Information System (INIS)

    This report outlines the progress of the installation of the superconducting Linac booster at the Australian National University. The Linac is based upon four modules, three of which contain three split-loop resonators. The fourth cryostat was intended to be a superbuncher and so houses only one resonator. The first stage of Linac operation will employ only three modules with 2 MV/m from each resonator. It is expected that the implementation of all nine modules, in subsequent stages, would boost beams by 18 MV/q. The project has fostered productive international collaboration between UK and Australian scientists. 1 tab., 6 figs

  15. A novel electron gun for inline MRI-linac configurations

    OpenAIRE

    Constantin, Dragoş E.; Holloway, Lois; Keall, Paul J.; Fahrig, Rebecca

    2014-01-01

    Purpose: This work introduces a new electron gun geometry capable of robust functioning in the presence of a high strength external magnetic field for axisymmetric magnetic resonance imaging (MRI)-linac configurations. This allows an inline MRI-linac to operate without the need to isolate the linear accelerator (linac) using a magnetic shield. This MRI-linac integration approach not only leaves the magnet homogeneity unchanged but also provides the linac flexibility to move along the magnet a...

  16. Modeling of the ALS linac

    International Nuclear Information System (INIS)

    The ALS injector linac is used for the Beam Test Facility (BTF) and the Damping Experiments when it is available in between the ALS filings. These experiments usually require higher quality beams and a better characterization than is normally required for ALS operations. This paper focuses on the beam emittance, energy tilt, and especially the longitudinal variation of the beam parameters. For instance, the authors want to avoid longitudinal variations at the low beta section of the BTF. On the other hand, a large energy tilt is required for post-acceleration compression of the bunch using an alpha magnet. The PARMELA code was modified to calculate and display longitudinal variations of the emittance ellipse. Using the Microsoft Development Studio under Windows NT environment the code can handle a much larger number of particles than was previously possible

  17. FACILITIES MANAGEMENT AT CERN

    CERN Multimedia

    2002-01-01

    Recently we have been confronted with difficulties concerning services which are part of a new contract for facilities management. Please see below for some information about this contract. Following competitive tendering and the Finance Committee decision, the contract was awarded to the Swiss firm 'Facilities Management Network (FMN)'. The owners of FMN are two companies 'M+W Zander' and 'Avireal', both very experienced in this field of facilities management. The contract entered into force on 1st July 2002. CERN has grouped together around 20 different activities into this one contract, which was previously covered by separate contracts. The new contract includes the management and execution of many activities, in particular: Guards and access control; cleaning; operation and maintenance of heating plants, cooling and ventilation equipment for buildings not related to the tunnel or the LHC; plumbing; sanitation; lifts; green areas and roads; waste disposal; and includes a centralised helpdesk for these act...

  18. POLAND AT CERN

    CERN Multimedia

    2000-01-01

    17 to 20 October 2000 Administration Building Bldg 60 - 1st floor 09h00 - 17h30 (Friday 09h00-12h00) POLAND AT CERN Twenty companies will present their latest technology at the «Poland at CERN» exhibition. The Polish industries will exhibit products and technologies, which are specifically related to the field of particle physics. The main subjects are: cryogenics and vacuum technologies, electric power and power electronics, heavy mechanical components, small and precision machined mechanical components, instrumentation, electrical and mechanical, electronics and software, power-control and fibre optic cables. The exhibition is being organised by the Technology Transfer Agency, Techtra Ltd under the auspices of the National Atomic Energy Agency, the State Committee for Scientific Research and the Ministry of the Economy. There follows: - the list of exhibitors. A detailed programme will be available in due course at: - your Divisional Secretariat, - the Reception information desk, buildin...

  19. CERN printing infrastructure

    CERN Document Server

    Otto, R

    2008-01-01

    For many years CERN had a very sophisticated print server infrastructure [13] which supported several different protocols (AppleTalk, IPX and TCP/IP) and many different printing standards. Today's situation differs a lot: we have a much more homogenous network infrastructure, where TCP/IP is used everywhere and we have less printer models, which almost all work using current standards (i.e. they all provide PostScript drivers). This change gave us the possibility to review the printing architecture aiming at simplifying the infrastructure in order to achieve full automation of the service. The new infrastructure offers both: LPD service exposing print queues to Linux and Mac OS X computers and native printing for Windows based clients. The printer driver distribution is automatic and native on Windows and automated by custom mechanisms on Linux, where the appropriate Foomatic drivers are configured. Also the process of printer registration and queue creation is completely automated following the printer regis...

  20. France at CERN

    CERN Multimedia

    2003-01-01

    From 23 to 25 September 2003 Administration Building Bldg 60/61 - ground and 1st floor 09.30 hrs - 17.30 hrs Twenty five companies will present their latest technology at the "France at CERN" exhibition. The French industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: electrical engineering, electronics, computer data processing, mechanical engineering, vacuum & low temperatures technologies, particles detectors and civil engineering. The exhibition is organised by UBIFRANCE, the French Committee for Trade Events Abroad. There follows : - the list of exhibitors. A detailed programme will be available in due course at : - your Divisional secretariat, - the reception information desk, Building 33, - the exhibition. A web page is available under the following link: http://www.lafranceaucern.com LIST OF EXHIBITORS 1 Air Liquide 14 Nicomatic 2 ATI Electronique 15 Photonis 3 ATIM 16 Positronic industries SAS 4 ATOS 17 Quantel 5 AXON 18 Ra...

  1. France at CERN

    CERN Multimedia

    2003-01-01

    From 22 to 25 September 2003 Administration Building Bldg 60/61 - ground and 1st floor 09.30 hrs - 17.30 hrs Twenty five companies will present their latest technology at the "France at CERN" exhibition. The French industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: electrical engineering, electronics, computer data processing, mechanical engineering, vacuum & low temperatures technologies, particles detectors and civil engineering. The exhibition is organised by UBIFRANCE, the French Committee for Trade Events Abroad. Please find below: - the list of exhibitors. A detailed programme will be available in due course at : - your Divisional secretariat, - the reception information desk, Building 33, - the exhibition. LIST OF EXHIBITORS 1 Air Liquide14 Nicomatic 2 ATI Electronique15 Photonis 3 ATIM16 Positronic industries SAS 4 ATOS17 Quantel 5 AXON18 Radiospares 6 Cedrat Technologies19 Rexor 7 CIAT20 SDS Service &...

  2. France at CERN

    CERN Multimedia

    2003-01-01

    From 23 to 25 September 2003 Administration Building Bldg 60/61 - ground and 1st floor 09.30 hrs - 17.30 hrs Twenty five companies will present their latest technology at the "France at CERN" exhibition. The French industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: electrical engineering, electronics, computer data processing, mechanical engineering, vacuum & low temperatures technologies, particles detectors and civil engineering. The exhibition is organised by UBIFRANCE, the French Committee for Trade Events Abroad. There follows : - the list of exhibitors. A detailed programme will be available in due course at : - your Divisional secretariat, - the reception information desk, Building 33, - the exhibition. A web page is available under the following link: http://www.lafranceaucern.com LIST OF EXHIBITORS 1 Air Liquide14 Nicomatic 2 ATI Electronique15 Photonis 3 ATIM16 Positronic industries SAS 4 ATOS17 Qu...

  3. BRITAIN AT CERN

    CERN Multimedia

    L. Abel/SPL

    2002-01-01

    12 - 14 November 2002 Administration Building Bldg 60 - ground and 1st floor 09h30 - 17h00 OPENING CEREMONY 10h00 - 12 November Twenty-seven companies will present their latest technology at the 'Britain at CERN' exhibition. The British industry will exhibit products and technologies, which are related to the field of particle physics. The main subjects are: cryogenics and vacuum technologies, gas detection, power supplies, welding, precision machined mechanical components, special metals, electronics, control and communication cables, particle detectors. The exhibition is being organised by the BEAMA, Federation of British Electrotechnical and Allied Manufacturers' Associations. There follows: the list of exhibitors, A detailed programme will be available in due course at : your Divisional secretariat, the reception information desk, Building 33, the exhibition. LIST OF EXHIBITORS Accles & Pollock Argon Services BlueArc UK Ltd BOC Edwards Cadburn-MDC Ltd Calder Industrial Materials Essex...

  4. BRITAIN AT CERN

    CERN Multimedia

    2002-01-01

    12 - 14 November 2002 Administration Building Bldg 60 - ground and 1st floor 09h30 - 17h00 OPENING CEREMONY 10h00 - 12 November Twenty-seven companies will present their latest technology at the 'Britain at CERN' exhibition. The British industry will exhibit products and technologies, which are related to the field of particle physics. The main subjects are: cryogenics and vacuum technologies, gas detection, power supplies, welding, precision machined mechanical components, special metals, electronics, control and communication cables, particle detectors. The exhibition is being organised by the BEAMA, Federation of British Electrotechnical and Allied Manufacturers' Associations. There follows: the list of exhibitors, A detailed programme will be available in due course at : your Divisional secretariat, the reception information desk, Building 33, the exhibition. LIST OF EXHIBITORS Accles & Pollock Argon Services BlueArc UK Ltd BOC Edwards Cadburn-MDC Ltd Calder Industrial Materials E...

  5. BRITAIN AT CERN

    CERN Multimedia

    L. Abel/SPL-PS

    2002-01-01

    12 - 14 November 2002 Administration Building Bldg 60 - ground and 1st floor 09h30 - 17h00 OPENING CEREMONY 10h00 - 12 November Twenty-seven companies will present their latest technology at the 'Britain at CERN' exhibition. The British industry will exhibit products and technologies, which are related to the field of particle physics. The main subjects are: cryogenics and vacuum technologies, gas detection, power supplies, welding, precision machined mechanical components, special metals, electronics, control and communication cables, particle detectors. The exhibition is being organised by the BEAMA, Federation of British Electrotechnical and Allied Manufacturers' Associations. There follows: the list of exhibitors, A detailed programme will be available in due course at : your Divisional secretariat, the reception information desk, Building 33, the exhibition. LIST OF EXHIBITORS Accles & Pollock Argon Services BOC Edwards Cadburn-MDC Ltd Calder Industrial Materials Essex X-Ray &...

  6. CERN diabetes awareness days

    CERN Multimedia

    2004-01-01

    Do you have diabetes without knowing it? The Medical Service invites everyone working at CERN to participate in the above PREVENTION and DETECTION campaign on the: 8 and 9 November 2004 from 9 am to 4 pm at the infirmary, bldg. 57, ground floor Personal evaluation of diabetes risks, (blood pressure, cholesterol and sugar levels, Body Mass Index measurements and more...) will be offered as well as leaflets, information and advice, (diet, exercise). A dietician specialised in diabetes will be on hand from 2 pm until 4 pm. Diabetes is reaching epidemic proportions in many countries due to an increase in obesity, sedentary lifestyles and poor diet. Diabetes is a major cause of blindness, cardio-vascular and kidney disease. An estimated 30-50% of these cases of diabetes go undetected, despite de fact that easy and efficient prevention exists. Diabetes discovered and treated early is not a severe condition but untreated and ignored it can have dire consequences.

  7. FRANCE AT CERN

    CERN Multimedia

    2001-01-01

    From 19 to 22 June 2001 Administration Building Bldg 60/61 - ground and 1st floor 09.00 hrs - 17.30 hrs Thirty-one companies will present their latest technology at the 'France at CERN' exhibition. The French industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: cryogenics and vacuum technology, superconductivity, measurement, detection, regulation, control and testing, electrical and electronic equipment, mechanics. The exhibition is organised by the French Committee for Trade Events Abroad. There follows : the list of exhibitors, the list of lectures which will be given at the exhibition. A detailed programme will be available in due course at : your Divisional secretariat, the reception information desk, Building 33, the exhibition. LIST OF EXHIBITORS Air Liquide Air Liquide Alcatel Vacuum Technology Alstom Industrie S.A. Alstom Magnets & Superconductors/Jeumont Industrie ATI Electronique Atos S.A. Axon' Cable S.A...

  8. FRANCE AT CERN

    CERN Multimedia

    C.-L. Jullien-Woringer/SPL-DI

    2001-01-01

    From 19 to 22 June 2001 Administration Building Bldg 60/61 - ground and 1st floor 09.00 hrs - 17.30 hrs Thirty companies will present their latest technology at the 'France at CERN' exhibition. The French industry will exhibit products and technologies which are related to the field of particle physics. The main subjects are: cryogenics and vacuum technology, superconductivity, measurement, detection, regulation, control and testing, electrical and electronic equipment, mechanics. The exhibition is organised by the French Committee for Trade Events Abroad. There follows : the list of exhibitors, the list of lectures which will be given at the exhibition. A detailed programme will be available in due course at : your Divisional secretariat, the reception information desk, Building 33, the exhibition. LIST OF EXHIBITORS Air Liquide Alcatel Vacuum Technology Alstom Industrie S.A. Alstom Magnets & Superconductors/Jeumont Industrie ATI Electronique Atos S.A. Axon' Cable S.A. Cedrat Recher...

  9. FRANCE AT CERN

    CERN Multimedia

    2003-01-01

    From 23 to 25 September, French industry exhibited products and technologies which are related to the field of particle physics. Twenty five companies presented their latest developments in electrical engineering, IT, vacuum & low temperature technologies, and civil engineering. Bernard Frois, Director of the Energy, Transport, and Environment Department of the French Ministry for Research and New Technologies inaugurated the exhibition on 23 September. To make the most of his visit, he also visited the assembly halls of CMS and ATLAS and the hall where the superconducting magnets for the LHC are tested. From left to right: Jean-Claude Brisson, ILO, Robert Aymar, designated CERN Director General, Françoise Le Moign, Assistant General Consul at Geneva, Alain Guillouët, Head of the economic mission in Switzerland, French Embassy, Thierry Boquien, Ubifrance, French agency for international development of companies, Bernard Frois, Director of the Department for Energy, Transport, and Environment of the Fre...

  10. Fermi comes to CERN

    CERN Multimedia

    2009-01-01

    In only 10 months of scientific activity, the Fermi space observatory has already collected an unprecedented wealth of information on some of the most amazing objects in the sky. In a recent talk at CERN, Luca Latronico, a member of the Fermi collaboration, explained some of their findings and emphasized the strong links between High Energy Physics (HEP) and High Energy Astrophysics (HEA). The Fermi gamma-ray telescope was launched by NASA in June 2008. After about two months of commissioning it started sending significant data back to the Earth. Since then, it has made observations that are changing our view of the sky: from discovering a whole new set of pulsars, the greatest total energy gamma-ray burst ever, to detecting an unexplained abundance of high-energy electrons that could be a signature of dark matter, to producing a uniquely rich and high definition sky map in gamma-rays. The high performance of the instrument comes as ...

  11. IDEALIBRARY AT CERN

    CERN Multimedia

    The Library

    2001-01-01

    All Academic Press journals are available online to CERN users for a test period which will last until the end of July. The service 'IDEALIBRARY' includes 174 scientific journals that cover several domains, ranging from engineering to mathematics, computing and physics. Titles covered are among others 'Atomic Data and Nuclear Data Tables', 'Nuclear Data Sheets', 'Annals of Physics', 'Journal of Parallel and Distributed Computing'. Reference citations present in each article are linked to the corresponding full text, when the latter is published by a member of the CrossRef consortium (members are: Elsevier, APS, AIP and others). Therefore, the navigation between articles and references is uninterrupted. A search engine allows queries by author, title and publication year. At present the Library is evaluating a site license offer proposed by the publisher.

  12. Snapshots of CERN

    CERN Multimedia

    Rebecca Leam

    Art was the language of communication between science and the thousands of visitors attending CERN’s two photographic exhibitions in Italy and Spain in October. The artistic images of CERN’s Nobel Prize winners, Large Hadron Collider (LHC) machinery and detectors raised people's curiosity and helped to promote the understanding of particle physics.   The exhibition “Accelerating Nobels” at Genoa’s 7th Science Festival. The exhibition “Accelerating Nobels” attracted over 600’000 visitors during Genoa’s 7th annual Science Festival. It showed science photographer Volker Steger’s 21 portraits of physics Nobels holding their own impromptu drawings of their best discovery. “The theme of the festival was ‘The Future’. The exhibition illustrated the long history of particle physics discoveries at CERN which all lead to what the LHC is going to find, including probably more ...

  13. CERN's newest building

    CERN Multimedia

    Anaïs Vernède

    2011-01-01

    With a growing number of users looking for offices, the shortage of space has become acute, particularly for physicists. Building 42, inaugurated on Friday 11 February, offers almost 300 new work-spaces and a particularly pleasant working environment.   Mauro Dell’Ambrogio, the Swiss State Secretary for Education and Research (left), Rolf Heuer , CERN Director-General (centre), and Mark Muller, President of the Government of the Republic and Canton of Geneva and Head of the Department of Construction and Information Technology (right) at the opening of Building 42 on 11 February, 2011.   Construction work for the new Building 42 began in January 2009, thanks to support from the Swiss foundation FIPOI (Fondation des immeubles pour les organisations internationales). After two years of work, the building, an extension of Building 40, is ready to accommodate physicists from around the world who have come to work on the LHC. "We had more than 25 external contractors working...

  14. Eiroforum Meets at CERN

    CERN Multimedia

    2001-01-01

    From left to right : Dr. J. Pamela, European Fusion Development Agreement (EFDA ), Associate Leader for JET (JET-EFDA), Dr. C. Carlile, Director-General Institut Laue-Langevin (ILL) Dr. A. Mitsos, Director-General of Research, European Commission , Prof. L. Maiani, Director-General (CERN), Dr. C. Cesarsky, Director-General European Southern Observatory (ESO), Prof. F. Kafatos, Director-General European Molecular Biology Laboratory (EMBL), Prof. W.G. Stirling, Director-General European Snchrotron Radiation Facility (ESRF), Dr.J.P. Poncelet, Director of Strategy and External Relations European Space Agency (ESA). Since the early 1950s, a number of powerful research laboratories which are used by an extensive network of scientists have been developed and deployed within Europe by European Intergovernmental Research Organisations (EIRO).This year, seven of these organisations have set up a collaboration group (EIROFORUM) with their top executives (Directors General or equivalent) as members. The most recent me...

  15. CERN's new microcosm exhibition is now open

    CERN Multimedia

    2016-01-01

    After a major revamp in 2015, CERN’s microcosm exhibition is once again open to visitors. The exhibition is free and open to all without reservation and visitors are encouraged to share their #microcosm @CERN experiences on social media. Read more: http://cern.ch/go/7HWC -Producer- CERN Video Productions -Director- Kate Kahle -Camera- indissoluble.com and Julien Ordan -Editor- Julien Ordan -Infography- Daniel Dominguez Noemi Caraban -Music- “Light Years” by Stellardrone http://freemusicarchive.org/music/Ste... You can follow us on: cern.ch youtube.com/cerntv google.com/+CERN facebook.com/cern twitter.com/cern/ linkedin.com/company/cern instagram.com/cern Copyright © 2016 CERN. Terms of use: http://copyright.web.cern.ch/

  16. Physics prospects from accelerated radioactive Ions at CERN

    CERN Document Server

    Butler, P A

    2004-01-01

    Through the advent of post-accelerated beams with REX-ISOLDE at CERN, probing nuclear properties using transfer reactions and Coulomb excitation of exotic nuclear species is now possible. REX ISOLDE currently provides beams of energy 2.2 MeV/u (soon be upgraded to 3.1 MeV/u) into the $\\gamma$-ray MINIBALL array, and other instrumentation, at the secondary target position. Examples of research topics currently addressed using REX are presented. Scheduled energy up-grades will increase the physics potential even further. The goal for the next five years will be to accelerate ions up to 5 MeV/A and higher energies. Increase of primary beam intensity will also be achieved in a phased approach, with a significant enhancement provided by the proposed Superconducting Proton Linac as the primary accelerator.

  17. President of Chile at CERN

    CERN Multimedia

    2007-01-01

    The President of Chile, Michelle Bachelet, in the ATLAS cavern with, from left to right, Peter Jenni, ATLAS Spokesman, Vivian Heyl, CONICYT President, and Robert Aymar, CERN Director-General. Robert Aymar, CERN Director-General, and Vivian Heyl, CONICYT President, signing a cooperation agreement between CERN and Chile’s Comisión Nacional de Investigación Científica y Tecnológica (CONICYT).The President of Chile, Michelle Bachelet, paid a visit to CERN during her three-day tour of Switzerland. The charismatic Michelle Bachelet and her large delegation were greeted by the CERN Director-General and then taken to see the ATLAS experiment and the LHC. She also took time to meet the Chilean community working at CERN, comprising several physicists in the Theory Group and the ATLAS experiment. The meeting was followed by the signing of a cooperation agreement between CERN and Chile’s Comisión Nacional de Investigación Científi...

  18. Brazil and CERN get closer

    CERN Multimedia

    2002-01-01

    The map of countries affiliated to CERN may in future include Brazil. On a visit to CERN last week, the Brazilian Minister of State for Science and Technology, Ronaldo Mota Sardenberg, expressed his country's interest in closer links to the Laboratory.   Luciano Maiani and the Brazilian Minister of State for Science and Technology Ronaldo Mota Sardenberg shake hands on CERN-Brazil co-operation. During his visit, the Minister and CERN Director General Luciano Maiani issued a joint statement for the continuation of a Co-operation Agreement first established in 1990. They also agreed to study the possibility of Brazil joining CERN-led Grid computing infrastructure projects. Brazilian physicists are already involved in the LHCb, ATLAS and CMS experiments. At the conclusion of the Minister's visit, he and Director-General Maiani agreed to establish a Working Group to examine ways of strengthening Brazil's links with CERN, and to prepare the way for a Brazilian request to CERN Council to become an Observer at th...

  19. The invention that is shaping Linac4

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    Accelerator experts are no strangers to innovative optimizations of existing techniques and to the development of novel solutions. Sometimes, they even come up with ideas that have the potential to revolutionize the field. This is the case with the Tolerance Aligned Cantilever Mounting (TACM) system, a completely new way of supporting the drift tubes, one of the core elements of linear accelerators. The new, patent-pending technique will be implemented at Linac4.   Drift tubes in a prototype for Linac4, assembled using the new TACM technology. “Assemble and adjust” – that was the technique used to build drift-tube linacs before the arrival of the TACM. Now, the inventors’ motto has become ‘adjust and assemble’. The inversion of these two words represents a real revolution for people working in the field. “The drift tubes are a critical element of Linac4 and they have to satisfy several requirements: they have to be mechanically ...

  20. Progress in the photocathode linac project

    International Nuclear Information System (INIS)

    The progress achieved so far in the Photocathode Linac Project have developed and tested linear accelerator structures at 2856 MHz, commissioned the klystron modulator and microwave systems, and developed the beamline, and are ready to commence acceleration experiments

  1. Long-term residual radioactivity in an intermediate-energy proton linac

    International Nuclear Information System (INIS)

    A new 160 MeV H− linear accelerator (LINAC4) is being installed at CERN to replace the present 50 MeV LINAC2 as proton injector of the PS Booster (PSB). During operation, the accelerator components will be activated by the beam itself and by the secondary radiation field. Detailed Monte Carlo simulations, for various beam energies and several decay times, were performed to predict the residual radioactivity in the main accelerator components and to estimate the residual dose rate inside the tunnel. The results of this study will facilitate future dismantling, handling and storage of the activated parts and consequently minimize the radiation dose to involved workers. The component activation was also compared with the exemption limits given in the current Swiss legislation and to the CERN design values, in order to make predictions for the future storage and disposal of radioactive waste. The airborne radioactivity induced by particles escaping the beam dump and the activation of the beam dump cooling water circuit were also quantified. The aim of this paper is to provide data of sufficiently general interest to be used for similar studies at other intermediate-energy proton accelerator facilities

  2. Long-term residual radioactivity in an intermediate-energy proton linac

    CERN Document Server

    Blaha, J; Silari, M; Vollaire, J

    2014-01-01

    A new 160 MeV H−H− linear accelerator (LINAC4) is being installed at CERN to replace the present 50 MeV LINAC2 as proton injector of the PS Booster (PSB). During operation, the accelerator components will be activated by the beam itself and by the secondary radiation field. Detailed Monte Carlo simulations, for various beam energies and several decay times, were performed to predict the residual radioactivity in the main accelerator components and to estimate the residual dose rate inside the tunnel. The results of this study will facilitate future dismantling, handling and storage of the activated parts and consequently minimize the radiation dose to involved workers. The component activation was also compared with the exemption limits given in the current Swiss legislation and to the CERN design values, in order to make predictions for the future storage and disposal of radioactive waste. The airborne radioactivity induced by particles escaping the beam dump and the activation of the beam dump cooling w...

  3. CERN Services Availability during the CERN Annual Closure 2011

    CERN Multimedia

    IT & GS Departments

    2011-01-01

    General Services: Most of the services provided by the GS Department that do not depend on continuous human presence will remain available during the CERN annual closure. Support levels are reduced during this period, in general the target reaction time for problems will be ½ day. Apart from the heating system, no interruptions are scheduled. In case of failure, the reaction time for restoration of services depends on the arrangements that have been made on a service by service level. Incidents will be documented at http://gssb.web.cern.ch/ For more detailed information please consult the service-portal (http://cern.ch/service-portal). Computing Services Most of the services provided by the IT Department - including WLCG production services - will remain available during the CERN annual closure. No interruptions are scheduled but in case of failure, the restoration of services cannot be guaranteed. Problems will be dealt with on a best effort basis only. However, please note: Experts shoul...

  4. CERN News - Aug 2010: AMS, from CERN to Space!

    CERN Multimedia

    CERN Video productions

    2010-01-01

    The Alpha Magnetic Spectrometer leaves CERN to embark on a USAF plane, on its journey to Cape Canaveral, and then Space. It will be installed on the International Space Station next year, where it will look for antimatter in Space.

  5. BLIP. [Brookhaven Linac Isotope Producer (BLIP)

    Energy Technology Data Exchange (ETDEWEB)

    Stang, Jr, L G

    1976-01-01

    The operation of the Brookhaven Linac Isotope Producer (BLIP) is discussed. Topics covered include targets, target holders, linac specifications, beam transport, and current production performance. The use of the BLIP is confined exclusively to the development of radionuclides that are, or should be, of medical interest, and the facility is moving rapidly into a self-supporting state from the income of the products. (PMA)

  6. TO ALL CERN GSM USERS

    CERN Multimedia

    1999-01-01

    Due to modifications introduced by SWISSCOM to their GSM network, the following changes will be made on Monday 5 July 1999:the CERN Closed User Group (CUG) area will extend to the whole of Switzerland for a period of approximately 3 monthsthe prefixes 0 and/or 11, hitherto used by authorised subscribers to make outside calls via the CERN telephone exchange, will be replaced by the prefix 22.Further information can be obtained on the Web at the following URL:http://nicewww.cern.ch/st/el/telecom/GSMopE.htm

  7. CERN firemen share their expertise

    CERN Multimedia

    Maximilien Brice

    2002-01-01

    Firemen from local fire brigades have been coming to CERN to learn modern fire-fighting techniques. The CERN firemen have some unique training equipment for two particularly dangerous fire hazards, flashover and backdraft. Backdraft occurs when a fire smoulders for a long time within a confined space. The gases produced by the embers fail to burn owing to a lack of oxygen. When the door of the room is opened, for example, the resulting inflow of oxygen causes a deflagration that may prove fatal. This series of photos shows the use of special apparatus to simulate the spectacular backdraft phenomenon, so that firemen training at CERN learn to understand it.

  8. News from the CERN Council

    CERN Multimedia

    The CERN Council today thanked the Organization’s outgoing management, and welcomed in the new. Outgoing Director General Robert Aymar, looked back on his five years at the helm, while new Director General, Rolf Heuer, presented his vision for the future. In other Council business, Romania was welcomed as a Candidate for Accession as Member State of CERN; and the groundwork was laid for a study of geographical and scientific extension of the role of CERN. Council also established the practical procedures for following projects relevant to the European Strategy for Particle Physics. Consult the complete Press Release.

  9. Space charge compensation on the low energy beam transport of Linac4

    CERN Document Server

    AUTHOR|(SzGeCERN)733270; Scrivens, Richard; Jesus Castillo, Santos

    Part of the upgrade program in the injector chains of the CERN accelerator complex is the replacement of the the proton accelerator Linac2 for the brand new Linac4 which will accelerate H$^-$ and its main goal is to increase the beam intensity in the next sections of the LHC accelerator chain. The Linac4 is now under commissioning and will use several ion sources to produce high intensity unbunched H$^-$ beams with different properties, and the low energy beam transport (LEBT) is the system in charge of match all these different beams to the Radio frequency quadrupole (RFQ). The space charge forces that spread the beam ions apart of each other and cause emittance growth limits the maximum intensity that can be transported in the LEBT, but the space charge of intense unbunched ion beams can be compensated by the generated ions by the impact ionization of the residual gas, which creates a source of secondary particles inside the beam pipe. For negative ion beams, the effect of the beam electric field is to ex...

  10. View into the cage of the 520 keV preaccelerator of the PS Linac 1

    CERN Multimedia

    1974-01-01

    The "open pill box" (in the background at the left) contains the ion source, where for many years all protons accelerated at CERN were "born". It is directly attached to the acceleration column where the protons pass from 520 kV to earth potential. The "electronics platform" (big metal structure on insulating pillars in the middle of the picture, for details see 7403120 and 7403071X) contains all the equipment that has to be at the same potential as the source itself. The smaller metal box in the foreground is part of the "bouncer", which compensated the voltage drop during acceleration of a proton pulse. The high voltage generator (not included in this photo)was originally a Cockcroft-Walton column. In 1973 it was replaced by a Sames generator (see 7403074X). Visible at the bottom right of the picture is the conductor from the "Sames". The "old" 50 MeV Linac 1, the original PS injector built in the 1950s, was (since 1976) replaced by a new 50 keV linac (Linac 2). It had a 750 keV "Cockcroft-Walton" pre-injec...

  11. Technical Developments on Reduced $\\beta$ Superconducting Cavities at CERN

    CERN Document Server

    Aberle, O; Calatroni, Sergio; Chiaveri, Enrico; Häbel, E; Hanni, R; Losito, R; Marque, S; Tückmantel, Joachim

    1999-01-01

    Several authors proposed the construction of superconducting proton linacs using the LEP2 cavities once LEP will be decommissioned. However only a fraction (about half) of these cavities can be used as they are for the high-energy part (b~1) of such a linac, the low energy part requiring the development of accelerating structures optimized for lower values of the particle velocity. At CERN an R&D programme on reduced-b single-cell cavities started in 1996 in order to study and explore the limits of the technology successfully used for the production of LEP2 cavities (copper cavities niobium-plated using the magnetron sputtering technique). Four different geometries were extensively investigated, each representing part of a multicell structure optimized for particles having b=0.48, b=0.625, b=0.66 and b=0.8 respectively. The results were encouraging for the last two types and therefore a new phase of R&D aimed at the production of multicell cavities for b=0.66 and b=0.8 was started. The goal is to demo...

  12. CERN - Commission Européenne

    CERN Multimedia

    2009-01-01

    Rolf-Dieter HEUER, Director General of CERN visits Commissioner Janez POTOCNIK (BRUSSELS, 03/03/2009, Ref.62264) CERN LHC Inauguration : extracts from the CERN LHC (European Organization for Nuclear Research - Large Hadron Collider) Inauguration and statements (GENEVA, 21/10/2008, Ref.59811) Commissioner Viviane REDING's visit to CERN (GENEVA, recorded 28/10/2005, Ref.42185)

  13. CERN Shop - Christmas Sale in Bldg. 33

    CERN Multimedia

    PH Department

    2010-01-01

    Looking for Christmas present ideas? The CERN Shop will give CERN card holders a special reduction of 10 % on all CERN Shop articles from Monday 13.12.2010 to Saturday 18.12.2010. Come and visit the CERN Shop in the Reception Building 33.

  14. CERN Shop - Christmas Sale in Bldg. 33

    CERN Multimedia

    PH Department

    Looking for Christmas present ideas? The CERN Shop will give the CERN card holders a special reduction of 10 % on all CERN Shop articles from Friday 11.12.2009 to Thursday 17.12.2009. Come to visit the CERN Shop at the Reception, Building 33. PH-EDU-PO

  15. CERN anti-fraud policy

    CERN Multimedia

    2013-01-01

    In 2011, a working group on improved fraud prevention and management was established. The group was composed of the Director of Administration and General Infrastructure, the Head of the Human Resources Department, and the Heads of the Legal Service and Internal Audit. It recommended the adoption of a global fraud prevention and management policy.   The global fraud prevention and management policy was implemented through the CERN Anti-Fraud Policy, which was endorsed by the Enlarged Directorate in May 2012 and approved by the Director-General for entry into force on 1 January 2013. The CERN Anti-Fraud Policy defines the Organization’s policy in matters of fraud.  CERN has a zero tolerance approach towards fraud, as it would compromise the accomplishment of its objectives and undermine its functioning, credibility and reputation. The policy also states CERN’s commitment to the prevention, identification and investigation of fraud. All CERN contributors have a key rol...

  16. CERN's new arrivals, March 2006.

    CERN Multimedia

    Jacques Fichet

    2006-01-01

    On Thursday 30 March 2006, members of the CERN Management welcomed recently recruited Staff Members and Fellows at the quarterly session of the Induction Programme (photographed here with Enrico CHIAVERI, HR Department).

  17. CERN's new arrivals, april 2005

    CERN Multimedia

    maximilien brice

    2005-01-01

    On Thursday 7 April 2005, members of CERN Management welcomed recently-recruited staff members and fellows at the quarterly session of the Induction Programme (photographed here with Enrico CHIAVERI and Werner ZAPF, HR Department).

  18. CERN's new arrivals, October 2005

    CERN Multimedia

    Maximilien Brice

    2005-01-01

    On Thursday 6 octobre 2005, members of CERN Management welcomed recently-recruited staff members and fellows at the trimester session of the Induction Programme (photographed here with Enrico CHIAVERI, Head of HR Department).

  19. CERN's new arrivals, Juanary 2006.

    CERN Multimedia

    Maximilien Brice

    2006-01-01

    On Thursday 19 January 2006, members of the CERN Management welcomed recently recruited staff members and fellows at the quarterly session of the Induction Programme (photographed here with Enrico Chiaveri, Head of the HR Department)

  20. Bulgarian folk dances at CERN

    CERN Multimedia

    Roberto Cantoni

    2010-01-01

    On Sunday 29 August, the Bulgarian folklore dance group Rhythm visited CERN. After their visit to the ATLAS visitor centre and the SM18 hall, they performed a show in the Pump Room, introducing CERN people to the musical traditions of their country.   The visit of the Bulgarian dance group was organized by Zornitsa Zaharieva, a member of the Beams Department, and Svejina Dimitrova, Director of the Varna Astronomical Observatory. “The students were enthusiastic about the opportunity to visit CERN”, says Zornitsa. “The idea of the performance came from the dance group itself, who wanted to express their gratitude for being given this chance”. The group, comprising around 25 children aged between 11 and 16 from the city of Varna, was hosted by the CERN Dancing Club. For their show, the young dancers, choreographed by Tashka Pavlova, performed traditional dances and songs from different Bulgarian regions. “As a member of the CERN Dancing Club com...