Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity

PAN Wei-Min<SUP></SUP>; WANG Guang-Wei<SUP></SUP>

doi:10.1088/1674-1137/32/1/016

Chinese Physics C> 2008, Vol. 32> Issue(1) : 72-74 DOI: 10.1088/1674-1137/32/1/016

Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity

PAN Wei-Min ,
WANG Guang-Wei ^, ,

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Abstract：
It is very important to predict the coupling between the cavity and the high power input source in the coupler design. In this paper, the time domain method is used to calculate the external quality factor for the BEPCII superconducting cavity. A comparison between the simulation results and the experimental results is presented for the different antenna penetration depths of the coupler. The results of simulation and measurement of have a good agreement, and the error is about 10%. The geometry parameters related with are also studied.

References

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. Hasan Padamsee, Jens Knobloch, Tom Hays. RF Superconductivity for Accelerators. New York: John Wiley Sons,INC, 1998. 147-3892. LI De-Run et al. Calculations of External Coupling to a Single Cell RF Cavity. Proceedings of LINAC1998. 9773. SHI Jia-Ru, CHEN Huai-Bi, ZHENG Shu-Xin et al. Comparison of Measured and Calculate Coupling between a Waveguide and an RF Cavity Using CST Microwave Studio. Proceedings of EPAC 2006. 1328-1330

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PAN Wei-Min, WANG Guang-Wei and Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity[J]. Chinese Physics C, 2008, 32(1): 72-74. doi: 10.1088/1674-1137/32/1/016

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Received: 2007-02-06
Revised: 2007-03-30

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Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity

PAN Wei-Min
WANG Guang-Wei ^,

Corresponding author: WANG Guang-Wei,

Received Date: 2007-02-06
Accepted Date: 2007-03-30
Available Online: 2008-01-05

Abstract: It is very important to predict the coupling between the cavity and the high power input source in the coupler design. In this paper, the time domain method is used to calculate the external quality factor for the BEPCII superconducting cavity. A comparison between the simulation results and the experimental results is presented for the different antenna penetration depths of the coupler. The results of simulation and measurement of have a good agreement, and the error is about 10%. The geometry parameters related with are also studied.