Offline Calibration of BES Ⅱ Vertex Chamber

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CHEN GuangPei, YUAN Ye, MAO ZePu, LIU Jing, RONG Gang, QIU JinFa, XIE YueHong, SUN LiangFeng, LI PeiQin, ZHAO HaiWen, ZHANG ChangChun, LI WeiGuo and YAN WuGuang. Offline Calibration of BES Ⅱ Vertex Chamber[J]. Chinese Physics C, 2000, 24(12): 1165-1172.
CHEN GuangPei, YUAN Ye, MAO ZePu, LIU Jing, RONG Gang, QIU JinFa, XIE YueHong, SUN LiangFeng, LI PeiQin, ZHAO HaiWen, ZHANG ChangChun, LI WeiGuo and YAN WuGuang. Offline Calibration of BES Ⅱ Vertex Chamber[J]. Chinese Physics C, 2000, 24(12): 1165-1172. shu
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Received: 1999-11-10
Revised: 1900-01-01
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Offline Calibration of BES Ⅱ Vertex Chamber

    Corresponding author: CHEN GuangPei,
  • Institute of High Energy Physics, CAS, Beijing 100039, China

Abstract: An algorithm based on VCJULI to calibrate the BES Ⅱ vertex chamber is described. The calibration includes the determination of global T0, the subtraction of t0 shift for each wire, the corrections of wire position itself and the position of the vertex chamber relative to the main drift chamber, the establishment of drift time to drift distance relation, etc. The main performance of the BES Ⅱ vertex chamber is given accordingly: space resolution is better than 100μm.

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