Offline Calibration of BES Ⅱ Vertex Chamber

CHEN GuangPei; YUAN Ye; MAO ZePu; LIU Jing; RONG Gang; QIU JinFa; XIE YueHong; SUN LiangFeng; LI PeiQin; ZHAO HaiWen; ZHANG ChangChun; LI WeiGuo; YAN WuGuang

Chinese Physics C> 2000, Vol. 24> Issue(12) : 1165-1172

Offline Calibration of BES Ⅱ Vertex Chamber

Institute of High Energy Physics, CAS, Beijing 100039, China

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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.

References

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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.

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Received: 1999-11-10
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Offline Calibration of BES Ⅱ Vertex Chamber

Corresponding author: CHEN GuangPei,

Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date: 1999-11-10

Accepted Date: 1900-01-01

Available Online: 2000-12-05

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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Offline Calibration of BES Ⅱ Vertex Chamber

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