JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Li, X.X. ED - Schaa, Volker RW ED - Huang, Wenhui ED - Yan, Xueqing ED - Tang, Chuanxiang ED - Li, Lu TI - RF Design and Cold Test of SCDTL Structure for Proton Therapy J2 - presented at SAP2023, Xichang, China, 10-12 July 2023 CY - Xichang, China T2 - Symposium on Accelerator Physics T3 - 14 LA - english AB - Side coupled drift tube linac (SCDTL) was selected in the middle energy accelerator of the cancer treatment device, which works at 3 GHz. The periodic structure of six accelerator cavities has been completed, and it can accelerate proton from 10 to 20 MeV. Besides, the electromagnetic design and preliminary cold measurement of a single accelerator cavities (b= 0.15) have been finished. The frequency of single-cavity electromagnetic design is 2.961 GHz, the Q₀ value is 12498, Kp is 2.19. The initial measurement frequency is 2.9579 GHz, the Q₀ value is 6927, which is 55\% of the design value, but the Q₀ value can be improved by electrochemical polishing, so the experiment of increasing the value of Q₀ is being carried out. ER -