Measuring the performance of the coaxial HOM coupler on a 2-cell TESLA-shapecopper cavity

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WANG Fang, WANG Er-Dong, ZHANG Bao-Cheng and ZHAO Kui. Measuring the performance of the coaxial HOM coupler on a 2-cell TESLA-shapecopper cavity[J]. Chinese Physics C, 2009, 33(6): 440-443. doi: 10.1088/1674-1137/33/6/007
WANG Fang, WANG Er-Dong, ZHANG Bao-Cheng and ZHAO Kui. Measuring the performance of the coaxial HOM coupler on a 2-cell TESLA-shapecopper cavity[J]. Chinese Physics C, 2009, 33(6): 440-443.  doi: 10.1088/1674-1137/33/6/007 shu
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Received: 2008-06-30
Revised: 2008-12-19
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Measuring the performance of the coaxial HOM coupler on a 2-cell TESLA-shapecopper cavity

    Corresponding author: WANG Fang,

Abstract: 

Coaxial High Order Mode (HOM) couplers have been fabricated at Peking University and their RF performance has been measured on a test device consisting of a coaxial transmission line and a 2-cell TESLA-shape copper cavity. The test results on the 2-cell TESLA-shape copper cavity with HOM couplers indicate that the coupler can cut off the fundamental mode TM010 and absorb HOMs effectively after a careful adjustment. The optimal angle of the HOM coupler with the beam tube is found. The initial test results of HOM couplers are presented in this paper.

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