Title :
Design and Calibration of a Phase and Amplitude Detector
Author :
Geng, Zheqiao ; Gu, Pengda ; Hou, Mi ; Pei, Guoxi
Author_Institution :
Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing 100049, China, gengzq@mail.ihep.ac.cn
Abstract :
The phase and amplitude detector (PAD) is one of the key units of the phasing system for BEPCII linac. A new PAD based on I/Q demodulator has been constructed to measure the phase and amplitude of each klystron. To compensate the mismatches of the I/Q demodulator, a calibration algorithm using the adaptive LMS method has been developed to calibrate the I/Q demodulator, and most of the mismatches have been compensated after calibration. Some EMC methods have been adopted to minimize the influence of the noises in the klystron gallery, and the PAD has been running stably and successfully.
Keywords :
Atherosclerosis; Calibration; Demodulation; Detectors; Klystrons; Least squares approximation; Linear particle accelerator; Phase detection; Phase measurement; Q measurement;
Conference_Titel :
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN :
0-7803-8859-3
DOI :
10.1109/PAC.2005.1591798
