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Gao, C.

Paper Title Page
MOPP112 Status of the PEFP Superconducting RF Project 820
 
  • S. An, Y.-S. Cho, B. H. Choi, C. Gao, Y. M. Li, Y. Z. Tang, L. Zhang
    KAERI, Daejon
 
  Superconducting RF project of the Proton Engineering Frontier Project (PEFP) aims to develop a superconducting RF linac to accelerate a proton beam above 80 MeV at 700 MHz. The preliminary design of a low-beta cryomodule has been completed. A low-beta (β=0.42) cavity, a higher-mode coupler and a fundamental power coupler (FPC) for the PEFP cavities have also been designed. A FPC baking system and high power RF conditioning system are under construction. A helium vesel made of stainless steel has been designed. A new tuner has also been designed. Two prototype copper cavities have been produced and tested. The HOM coupler has been measured on the copper cavities. A cryostat for a SRF cavity vertical testing has been designed.  
MOPP113 PEFP Dumbbell Frequency and Length Tuning of a Low-beta SRF Cavity 823
 
  • S. An, Y.-S. Cho, C. Gao, Y. M. Li, Y. Z. Tang
    KAERI, Daejon
  • L. Zhang
    Department of Mechanics, Chang’an University, Daejon
 
  Based on present technology, a dumbbell fabrication is a necessary mid-process for a cavity manufacting process. A dumbbell with a right length and frequency is necessary to build up a desired cavity. In order to obtain the exact frequencies of each individual half cell of a PEFP dumbbell, a new and confirmed measurement method has been established. In this paper, the dumbbell frequency measurement method and the frequency and length tuning practices for a PEFP low-beta cavity have been described.