Author: Du, Sh.
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MOP14 Study of the Beam Extraction from Superconducting Cyclotron SC200 87
 
  • K.Z. Ding, Y.F. Bi, G. Chen, Y. Chen, Sh. Du, H. Feng, J. Ge, J. Li, Y. Song, Y.H. Xie, J. Zheng
    ASIPP, Hefei, People's Republic of China
  • O. Karamyshev, G.A. Karamysheva, N.A. Morozov, E.V. Samsonov, G. Shirkov
    JINR, Dubna, Moscow Region, Russia
 
  According to the agreement between the Institute of Plasma Physics (ASIPP) of the Chinese Academy of Sciences in Hefei, China, and Joint Institute for Nuclear Research (JINR), Dubna, Russia, the project of superconducting isochronous cyclotron for proton therapy SC200 is under development at JINR. The cyclotron will provide acceleration of protons up to 200 MeV with maximum beam current ~1 μA. Extraction system of the beam consists of electrostatic deflector and two passive magnetic channels. Electric field strength in deflector does not exceed 170 kV/cm, gradients of magnetic field in channels are in range 2-4 kG/cm.The first of the channels focusing the beam in horizontal plane is subdivided into four parts. Geometry and magnetic field of two and three bars sub channelsare described. Results of the beam tracking inside extraction system are presented. Efficiency of the beam extraction was estimated for different amplitudes of the betatron oscillations in accelerated beam.  
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THP20 Magnetic System for SC200 Superconducting Cyclotron for Proton Therapy 353
 
  • N.A. Morozov, O. Karamyshev, G.A. Karamysheva, E.V. Samsonov, G. Shirkov
    JINR, Dubna, Moscow Region, Russia
  • Y.F. Bi, G. Chen, Y. Chen, K.Z. Ding, Sh. Du, H. Feng, J. Ge, J. Li, Y. Song, J. Zheng, J. Zhou
    ASIPP, Hefei, People's Republic of China
 
  The superconducting cyclotron SC200 for proton therapy is designing by ASIPP (Hefei, China) and JINR (Dubna, Russia) will be able to accelerate protons to the energy 200 MeV with the maximum beam current of 1 μA. A conceptual design study with 3D codes for the superconducting cyclotron magnet has been carried out during 2015-16 at ASIPP and JINR. The main design considerations are reviewed. The results obtained by numerical field computation for a suitable choice of design parameters are presented. Results of numerical calculations are the basis for technical design of SC200 cyclotron.  
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