Multipacting analysis for half wave resonators in the China ADS

作者：张聪, 张生虎, He Yuan, 岳伟明, 常玮 · 发表于：Acta Scientiarum Naturalium Universitatis Sunyatseni · 年份：2015 · 被引用次数：1 · 研究领域：Particle accelerators and beam dynamics、Particle Accelerators and Free-Electron Lasers、Gyrotron and Vacuum Electronics Research

In the China ADS(CIADS) proton accelerator, multipacting is an issue of concern for the superconducting cavities. The parallel codes Omega3 P and Track3 P, developed at SLAC under the support of the DOE Sci DAC program, have been used to calculate the electromagnetic field distribution and to analyze the multipacting barriers of such cavities. In this paper, two types of 162.5 MHz half wave resonator cavities, HWR-010(cylinder type with β of 0.10) and HWR-015(taper type with β of 0.15) have been analyzed, and the results of the multipacting analyses show that the resonant electrons occur at different regions with different accelerating gradients. The two-point 1st order multipacting on the short plate has also been researched and discussed.