Author: Svistunov, Y.A.
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WEPSB001
 Particle Swarm Method for Optimization of Special RFQ Channel  
 
  • V.V. Altsybeyev, D.A. Ovsyannikov
    Saint Petersburg State University, Saint Petersburg, Russia
  • A.P. Durkin
    MRTI RAS, Moscow, Russia
  • Y.A. Svistunov
    NIIEFA, St. Petersburg, Russia
  
  Particle swarm method is used for optimization of special RFQ channel. There is a considered possibility of separate preacceleration of the multicharged ions with the different A/Z ratios in single radio-frequency quadrupole (RFQ) channel. Magnitude of the injection energy into RFQ is about a few keV/u, magnitude of the injection energy into booster or following linac cascade are 300 keV/u. Aim of optimization to change regular part of RFQ or matching section profile to improve outut parameters of the beams particles, such as current, emittance, phase width, etc. Phase ellipses of the beams partiles on input RFQ may be arbitrary oriented in phase space. In this case particle swarm method is effictive enough for optimizations.  
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WEPSB055 The Problems of Accelerator-Driver Design for ADS 486
 
  • A.G. Golovkina, I.V. Kudinovich, D.A. Ovsyannikov
    St. Petersburg State University, St. Petersburg, Russia
  • I.V. Kudinovich
    KSRC, St. Petersburg, Russia
  • Y.A. Svistunov
    Saint Petersburg State University, Saint Petersburg, Russia
  • Y.A. Svistunov
    NIIEFA, St. Petersburg, Russia
  
  Main problems of accelerator-driver design for ADS are considered. Accelerator-driver should meet additional requirements in comparison with accelerators for other purposes: - high neutron production rate; - higher reliability; - continuous operation for more than 5000 hours; - possibility of accelerator parameters adjustment to regulate ADS power level. Different types of accelerators were analyzed taking into account the mentioned features and the fact that the most prospective way of ADS application nowadays is transmutation. It's shown that the most preferable accelerator type is proton linac. Also it's marked that for demonstration facilities accelerators with lower requirements and correspondingly cost can be used.  
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TUPSA015 Acceleration of Deuterons and Protons in Single RFQ Strucrure 247
 
  • A.D. Ovsyannikov, D.A. Ovsyannikov, Y.A. Svistunov
    Saint Petersburg State University, Saint Petersburg, Russia
  • A.P. Durkin
    MRTI RAS, Moscow, Russia
  
  Some aspects of acceleration of protons and deuterons in single RFQ are considered. Usually vane voltage for protons must be two times less than vane voltage for deuterons. If space charge is significant vane voltage for protons can be too small to reach high efficiency of bunching and focusing of protons beam. It is shown that a rising of voltage up to nominal value for deuterons leads to increasing of capture and transmission for protons. Another problem is concerned with a choice of radial matching section parameters, which are optimal for both beams (proton and deuterons) simultaneously. Methods of optimization are discussed. Analysis of particles dynamics is illustrated by calculation's results.  
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