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TY - CONF AU - Ding, K.Z. AU - Bi, Y.F. AU - Chen, G. AU - Chen, Y. AU - Du, Sh. AU - Feng, H. AU - Ge, J. AU - Karamyshev, O. AU - Karamysheva, G.A. AU - Li, J. AU - Morozov, N.A. AU - Samsonov, E.V. AU - Shirkov, G. AU - Song, Y. AU - Xie, Y.H. AU - Zheng, J. ED - Chrin, Jan ED - Schaa, Volker RW TI - Study of the Beam Extraction from Superconducting Cyclotron SC200 J2 - Proc. of Cyclotrons2016, Zurich, Switzerland, September 11-16, 2016 C1 - Zurich, Switzerland T2 - International Conference on Cyclotrons and Their Applications T3 - 21 LA - english AB - 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. PB - JACoW CP - Geneva, Switzerland SP - 87 EP - 90 KW - extraction KW - cyclotron KW - septum KW - proton KW - resonance DA - 2017/01 PY - 2017 SN - 978-3-95450-167-0 DO - 10.18429/JACoW-Cyclotrons2016-MOP14 UR - http://jacow.org/cyclotrons2016/papers/mop14.pdf ER -