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

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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
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 shu
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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

    Corresponding author: WANG Guang-Wei,

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.

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