Multipacting analysis for half wave resonators in the China ADS

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ZHANG Cong, ZHANG Sheng-Hu, HE Yuan, YUE Wei-Ming and CHANG Wei. Multipacting analysis for half wave resonators in the China ADS[J]. Chinese Physics C, 2015, 39(11): 117002. doi: 10.1088/1674-1137/39/11/117002
ZHANG Cong, ZHANG Sheng-Hu, HE Yuan, YUE Wei-Ming and CHANG Wei. Multipacting analysis for half wave resonators in the China ADS[J]. Chinese Physics C, 2015, 39(11): 117002.  doi: 10.1088/1674-1137/39/11/117002 shu
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Received: 2014-08-13
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    Supported by National Natural Science Foundation (11221064, 91026001)

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Multipacting analysis for half wave resonators in the China ADS

    Corresponding author: ZHANG Cong,
  • 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Fund Project:  Supported by National Natural Science Foundation (11221064, 91026001)

Abstract: In the China ADS (CIADS) proton accelerator, multipacting is an issue of concern for the superconducting cavities. The parallel codes Omega3P and Track3P, developed at SLAC under the support of the DOE SciDAC 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.

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