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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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.

References

[1]

BAI J Z et al (BES Collaboration). Nucl. Inst. and Meth., 1994, A344:3192 ZHENG ZhiPeng, ZHU YongSheng. Electron–Positron Physics on BES(in Chinese). Nanning: Guangxi Sci. Tech.Press, 1998(郑志鹏,朱永生.北京谱仪正负电子物理.南宁:广西科学技术出版社,1998)3 Adler J et al. Nucl. Instr. Meth., 1989, A276:424 Walter H Toki. SLAC–PUB–5232, March 19905 CHEN GuangPei et al. High Energy Phys. and Nucl. Phys. (in Chinese), 1998, 22: 982(陈光培等.高能物理与核物理,1998,22:982) 6 MAO ZePu et al. High Energy Phys. and Nucl. Phys. (in Chinese), 1996, 20: 1073(毛泽普等.高能物理与核物理,1996,20:1073) 7 Henry N Nelson. SLAC–PUB–4318, May 1987

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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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