Author: Savin, D.A.
Paper Title Page
WEPSB57 A Study on Implementation of Multistripe Crystals to Protect the Septum-Magnets and to Generate the Gamma Radiation on the U-70 Accelerator 397
 
  • A.A. Yanovich, A.G. Afonin, E.V. Barnov, G.I. Britvich, Y.A. Chesnokov, P.N. Chirkov, A.A. Durum, M.Yu. Kostin, I.S. Lobanov, V.A. Maisheev, I.V. Poluektov, S.F. Reshetnikov, Yu.E. Sandomirskiy, D.A. Savin
    IHEP, Moscow Region, Russia
  
  Funding: The work is supported by Russian Science Foundation (grant 17-12-01532).
Recently started studies on the application of volume reflection of particles in crystals for the steering beams (for extraction and collimation of a circulating beam in accelerators). Volume reflection is more efficient than channeling, but requires amplification of the deflection angle by applying multicrystals. The report discusses two new applications of multicrystals made like multistripe structures: 1. The property of effective deflection of particle beam was used to protect the septum-magnets of the U-70 in the process of extraction of the proton beam with energy of 50 GeV. 2. The possibility of generation of gamma radiation was studied in the secondary electron beam with energy of 7 GeV. In both cases, promising preliminary data were obtained. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-WEPSB57  
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THPSC24 Fast Wire Scanners for U-70 Accelerator of IHEP 459
 
  • V.T. Baranov, V.N. Gorlov, D.A. Savin, V. Terekhov
    IHEP, Moscow Region, Russia
  
  The fast wire scanners are used for the transverse beam profile measurement in horizontal and vertical planes at the IHEP U-70 Accelerator. They cover the total range of operating beam intensities and energies of the circulating of proton and ion beams. The scheme of the scanners is based on a rotary brushless servomotor produced by the "Faulhaber" company. The speed of the fork with the carbon fiber is 16 m/s. The rotation mechanism and the control electronics was done to take into account the available radiation levels at the locations of the wire scanners. This report gives the mechatronic design of the wire scanners and provides a system overview.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC24  
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THPSC28 A System for Monitoring Beam Losses at the IHEP U-70 Accelerator 466
 
  • V.I. Terekhov, G.M. Antonichev, V.T. Baranov, D.A. Savin, E.A. Syshchikov
    IHEP, Moscow Region, Russia
  • V.A. Kokovin
    SUD, Dubna, Moscow region,, Russia
  
  Updated beam monitor system executes continuous monitoring surveillance beam losses around the IHEP U­70 accelerator. The system consists of 120 detectors. One is located upstream of each bending magnet in the median plane outside of the beam-pipe at 60 cm apart. The detectors are cheap ion chambers filled with air under barometric pressure and 1.8 liter volume. Chamber signals processing is based on digital integration and done in the framework of the U­70 Control System. Acquired data are used to facilitate tuning of the accelerator, minimize beam losses at any point of the machine circumference and consequently decrease damage for accelerator equipment. This report gives a brief description of the system and the result of run experience as an example.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC28  
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