Design and RF test of MEBT buncher cavities for C-ADS Injector II at IMP

作者：Huang, Shichun; Jia, Huan; Niu, Haihua; He, Yuan^*; Zhang, Shenghu; Yuan, Chenzhang; Wang, Jing; Zhang, Shengxue; Chang, Wei; Zhang, Peng; Zhao, Hongwei; Xia, Jiawen

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2015, 799: 44-49.

DOI：10.1016/j.nima.2015.07.047

• Buncher cavity
• MEBT
• RF design
• Mechanical and thermal analysis
• High power test
• ADS

To match the beam from the Radio Frequency Quadrupole (RFQ) accelerator to the Superconducting Half-wave Resonator (HWR) Linac, two room temperature (RT) double-gap Quarter-wave Resonator (QWR) bundlers are designed to be located in the Medium Energy Beam Transport Line (MEBT) for the C-ADS Injector II at IMP. Both cavities work at 162.5 MHz, with beta=0.067 and a beam aperture diameter of 40 mm. The effective voltage of these two cavities needs to reach 135 kV in Continuous Wave (CW) mode. In this paper, the RF design and thermal analysis of the cavities will be presented, along with the tuners and coupler consideration. The measured frequencies, R-sh/Q(0), Q(0) and voltage of the cavities agree well with the simulation result. Details of the RI test results including the full power tests of the cavities will be shown.

• 出版日期2015-11-1
• 单位中国科学院大学; 兰州理工大学; 中国科学院近代物理研究所