The Calibration Method of TOFr in the STAR Experiment

RUAN Li-Juan; WU Jian; DONG Xin; SHAO Ming; CHEN Hong-Fang; WANG Xiao-Lian; LI Cheng; HUANG Sheng-Li

Chinese Physics C> 2005, Vol. 29> Issue(2) : 157-161

The Calibration Method of TOFr in the STAR Experiment

Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China

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Abstract：
a tray of time of flight detector based on mrPc technology took part in the physics run of star both in p+p and d+au collisions in 2003. together with the information from the time Projection chamber(tPc) and the pseudo–vertex Position detector (pvPd) of the star experiment,corrections are done to calibrate the new prototype tof. the intrinsic time resolution of tofr reaches 85ps and it extends the π/K and K/p separation up to 1.6gev/c and 3.0gev/c respectively.

References

[1]

. LI Cheng, WU Jian, CHEN Hong-Fang et al. High Energy Phys. and Nucl. Phys. , 2001, 25( 9) : 933-9362. LI Cheng, WU Jian,WANG Xiao-Lian et al. Nuclear Science and Techniques, 2002, 13( 1) : 6-103. CHEN Hong-Fang, LI Cheng, WANG Xiao-Lian et al . High Energy Phys. and Nucl. Phys. , 2002, 26( 3) : 201-2064. SHAO Ming, RUAN Li-Juan, CHEN Hong-Fang et al. Nucl. Instrum.Methods. , 2002, A492: 344-3505. SHAO Ming,CHEN Hong-Fang,LI Cheng et al. High Energy Phys. and Nucl . Phys. , 2004, 28( 7) : 7336. Anderson M et al. Nucl . Instrum. Methods. , 2003, A499: 6597. Llope W J et al. Nucl. Instrum. Methods. , 2004, A522: 252-273

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RUAN Li-Juan, WU Jian, DONG Xin, SHAO Ming, CHEN Hong-Fang, WANG Xiao-Lian, LI Cheng and HUANG Sheng-Li. The Calibration Method of TOFr in the STAR Experiment[J]. Chinese Physics C, 2005, 29(2): 157-161.

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Received: 2004-04-27
Revised: 1900-01-01

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