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TY - CONF AU - Zhao, Y. AU - Calabretta, L. AU - Chen, G. AU - Karamyshev, O. AU - Karamysheva, G.A. AU - Shirkov, G. AU - Xu, S.W. ED - Conradie, Lowry ED - De Villiers, John Garrett ED - Schaa, Volker RW TI - Recent Progress on Ion Source of SC200 Cyclotron J2 - Proc. of Cyclotrons2019, Cape Town, South Africa, 23-27 September 2019 CY - Cape Town, South Africa T2 - International Conference on Cyclotrons and their Applications T3 - 22 LA - english AB - A 200MeV compact superconducting cyclotron, named SC200, for proton therapy is under development by collaboration of ASIPP (Hefei, China) and JINR (Dubna, Russia). The ion source is a significant subsystem of the cyclotron. A hot cathode internal ion source has been designed and tested for SC200 cyclotron. The ion source has been successfully arc discharged on the test bench. The extracted beam current has been measured over 100 uA and filament lifetime of ion source exceeded 100 h, which indicated that the ion source meets the design requirements. The stability of the filament under strong magnetic field has also been tested and the differences between the two kinds of filament are compared. PB - JACoW Publishing CP - Geneva, Switzerland SP - 24 EP - 26 KW - ion-source KW - cyclotron KW - proton KW - extraction KW - experiment DA - 2020/06 PY - 2020 SN - 978-3-95450-205-9 DO - doi:10.18429/JACoW-Cyclotrons2019-MOP002 UR - http://jacow.org/cyclotrons2019/papers/mop002.pdf ER -