The horizontal test for BEPCII 500MHz spare cavity has been completed in IHEP. The max voltage of the cavity is 2.17MV, Q0 is 5.78\times108.This paper mainly reports coupler aging parameters before the horizontal test, as well as the parameters during cool-down the change of frequency, loaded Q, vacuum and the deformation of the cavity with temperature. And the test results were analyzed.
@article{arxiv.1112.2486,
title = {Horizontal Test for BEPCII 500MHz Spare Cavity},
author = {Mi Zhenghui and Sun Yi and Wang Guangwei and Pan Weimin and Li Zhongquan and Dai Jianping and Ma Qiang and Lin Haiying and Xu bo and Huang Hong and Wang Qunyao and Xu Yufen and Zhao Guangyuan and Huang Tongming and Sha Peng and Liu Yaping and Meng Fanbo and Qiu Feng and Li Han and Chen Xu and Zhao Danyang and Zhang Juan},
journal= {arXiv preprint arXiv:1112.2486},
year = {2011}
}