PAD Design for the Phasing System of BEPCⅡ Linac

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GEN Zhe-Qiao, HOU Mi and PEI Guo-Xi. PAD Design for the Phasing System of BEPCⅡ Linac[J]. Chinese Physics C, 2006, 30(2): 151-154.
GEN Zhe-Qiao, HOU Mi and PEI Guo-Xi. PAD Design for the Phasing System of BEPCⅡ Linac[J]. Chinese Physics C, 2006, 30(2): 151-154. shu
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Received: 2005-05-30
Revised: 1900-01-01
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PAD Design for the Phasing System of BEPCⅡ Linac

    Corresponding author: GEN Zhe-Qiao,
  • Institute of High Energy Physics, CAS, Beijing 100049, China

Abstract: Phase and amplitude measurement is one of the most important issues for the phasing system of BEPCⅡ linac. Two kinds of PAD, based on analog and digital I/Q demodulator respectively, have been constructed and tested in both laboratory and the klystron gallery of BEPCⅡ linac. A calibration algorithm based on LMS method is used to compensate the mismatches of the analog I/Q demodulator. Experiments show that both kinds of PAD run stably and can meet the requirements of the phasing system.

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