Author: Shirkov, G.
Paper Title Page
MOPPA011
 Physical Startup of the First Stage of the Electron Linear Acceleration LINAC-800  
 
  • V. Kobets, N. Balalykin, A.G. Kobets, I.N. Meshkov, V. Minashkin, M.A. Nozdrin, G. Shirkov, A.P. Sumbaev
    JINR, Dubna, Moscow Region, Russia
  • V. Shabratov
    JINR/VBLHEP, Moscow, Russia
  
  It is reported on startup of the first stage of the Electron Linear Acceleration LINAC-800 at the Veksler and Baldin Laboratory of High Energy Physics of the Joint Institute for Nuclear Research. As a result of commissioning is designed and manufactured control unit PFN-modules, carried out to the launch of the first accelerating station modulator electron linear accelerator LINAC-800. Launched and debugged high-frequency master RF-system of linear electron accelerator, conducted RF-training first accelerating section. Accelerated electron beam, are its characteristics.  
 
FRBCH01 Development of the IBA-JINR Cyclotron C235-V3 for Dimitrovgrad Hospital Center of the Proton Therapy 221
 
  • S.A. Kostromin, S. Gurskiy, G.A. Karamysheva, M.Y. Kazarinov, S.A. Korovkin, S.P. Mokrenko, N.A. Morozov, A.G. Olshevsky, V.M. Romanov, E. Samsonov, N.G. Shakun, G. Shirkov, S.G. Shirkov, E. Syresin
    JINR, Dubna, Moscow Region, Russia
  • P. Cahay, Y. Jongen, Y. Paradis
    IBA, Louvain-la-Neuve, Belgium
  
  The Dimitrovgrad project, the first Russian hospital center of the proton therapy, was approved in 2010. The JINR-IBA collaboration developed and constructed the C235-V3 proton cyclotron for this center. The assembly and the beam tests of the machine were done in 2011-2012 in special experimental hall in JINR. This cyclotron is a substantially modified version C235-V3 of the IBA C235 serial cyclotron. C235-V3 has the improved extraction system which was constructed and tested. This system allows raise the extraction efficiency up to 77% from 50% in comparison with serial C235. Special mapping system (for Br-component) of the magnetic field was developed and constructed by JINR for the shimming of the Br-field in the middle plane of the cyclotron. Tests with accelerated and extracted beam were performed in August 2012 in JINR. Beam vertical motion in the cyclotron is in the acceptable limits (ΔZbeam≤3 mm). Transmission from r=300mm to 1030 is 72% without beam cutting diaphragms. This allows reduce irradiation dose of the machine elements in comparison with serial C235. Extraction efficiency is 62%. Total efficiency of the machine is 45%. Recommendations are formulated to modify the magnetic system and reduce sensitivity of the machine to the magnetic field imperfections. Most of changes concerned with the increasing of the vertical focusing at the final radii.  
slides icon Slides FRBCH01 [6.282 MB]  
 
WEPPD039 Development of the New Control Systems for JINR e- Linac Accelerator Test-Bench 626
 
  • M.A. Nozdrin, N. Balalykin, V. Minashkin, V.Y. Schegolev, G. Shirkov, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  
  Linear accelerator test-bench in the Joint Institute for Nuclear Research is based on the part of the accelerator complex which was transferred to the possession of JINR by the National Institute for Subatomic Physics (NIKHEF, Amsterdam). Analysis of the transferred accelerator equipment has shown that full re-engineering is required for its control systems; all other systems are in good condition and have considerable endurance. Results of development and creation of the Electron Gun Control System (EGCS), Video and Analog Signals Control System (VASCS) and Automatic System of Radiation Safety Control (ASRSC) are presented. These systems allowed achieving a commissioning of the first accelerator section of the bench with current of 3 mA in 1 us pulse and at beam energy of 23-25 MeV.  
 
WEPPD023 Dubna-Minsk Activity on the Development of 1.3 GHz Superconducting Single-Cell RF-cavity 602
 
  • N.S. Azaryan, Ju. Boudagov, D.L. Demin, G. Shirkov
    JINR, Dubna, Moscow Region, Russia
  • M.A. Baturitsky
    NC PHEP BSU, Minsk, Belarus
  • S.E. Demyanov, E.Yu. Kaniukov
    Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus, Minsk, Belarus
  • V.A. Karpovich, N.V. Liubetsky
    BSU, Minsk, Belarus
  • R.D. Kephart, L. Ristori
    Fermilab, Batavia, USA
  • S.V. Kolosov, A.A. Kurayev, A.K. Sinitsyn
    Belarus State University of Informatics and Radioelectronics (BSUIR), Minsk, Belarus
  • S.I. Maximov, V.N. Rodionova
    Belarussian State University, Scientific Research Institute of Nuclear Problems, Minsk, Belarus
  • V.S. Petrakovsky, I.L. Pobol, A.I. Pokrovsky, S.V. Yurevich, A.Yu. Zhuravsky
    Physical-Technical Institute of the National Academy of Sciences of Belarus, Minsk, Belarus
  
  In 2011 Dubna-Minsk collaboration started an activity on the development and manufacture the series of superconducting niobium cavities in the enterprises in Belarus. First results of this work are presented. Simulation code was developed to compute EM characteristics, and to calculate the shape and geometric dimensions of SC niobium RF-cavity taking into account higher order oscillations modes. The calculations of a single-cell and 9-cell cavity were made: the found ratio of the maximum electric field on the cavity axis to an average accelerating field is 2 within 1%; the found geometric factor equals 283 Ohm. Half-cells will be made by hydraulic deep drawing and welded by electron-beam (EBW). A stamping tool for hydraulic deep drawing of the half-cells and a set of technological tools for probing of EBW of two half-cells have been designed. Mechanical properties of niobium and model material (Cu, Al) were investigated. Cryogenic system for low temperature RF tests of the SC single-cell cavity was successfully tested at 4.2 K. Coupling device for RF measurement of the single-cell SC niobium cavity was synthesized and manufactured – the measured standing wave ratio is about 1.01-1.07. Warm RF tests with etalon single-cell cavity were made: fundamental frequency – 1.273 GHz, quality factor (warm) – 28·103.