Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Frequency and Length Adjustment of A PEFP Low-Beta Dumbbell

  • Changyi, Gao (PEFP, Korea Atomic Energy Research Institute) ;
  • An, Sun (PEFP, Korea Atomic Energy Research Institute) ;
  • Liping, Zhang (PEFP, Korea Atomic Energy Research Institute) ;
  • Yazhe, Tang (PEFP, Korea Atomic Energy Research Institute) ;
  • Yingmin, Li (PEFP, Korea Atomic Energy Research Institute) ;
  • Kim, Han-Sung (PEFP, Korea Atomic Energy Research Institute) ;
  • Cho, Yong-Sub (PEFP, Korea Atomic Energy Research Institute)
  • Published : 2008.05.31
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Abstract

Superconducting RF cavities are being considered for accelerating a proton beam at 700 MHz in the linac of the Proton Engineering Frontier Project (PEFP) and its post-project. Dumbbell fabrication is a mid-process for manufacturing an elliptical superconducting RF cavity. During the dumbbell fabrication, control of the dumbbell length and the $TM010\;{\pi}$ mode frequencies is necessary to build up a desired cavity. A new formula with a perturbation measurement method is used to measure and calculate the frequencies of the individual half-cells of a PEFP low-beta dumbbell, and to tune the frequency and length of the half-cells. In this article, the tuning method and results of the PEFP low-beta dumbbells have been presented.

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References

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