Study on MRPC-TOF Timing Properties and Calibration Methods

LI Liang; SHAO Ming; CHEN Hong-Fang; LI Cheng; TANG Ze-Bo; DONG Xin; WANG Xiao-Lian

Chinese Physics C> 2007, Vol. 31> Issue(6) : 576-580

Study on MRPC-TOF Timing Properties and Calibration Methods

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

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Abstract：
A prototype Time-of-Flight (TOF) detector, consisting of 28 Multi-gap Resistive Plate Chambers (MRPC), has been successfully operated at RHIC-STAR experiment since 2003. Extensive study on the calibration procedure of the MRPC-TOF is performed in order to better understand MRPC's performance. Improvements and extension on current calibration method are discussed. Furthermore, it has been found that the position resolution of the reconstruction system at STAR has significant impact on the MRPC time resolution. After subtracting this effect, the intrinsic time resolution of MRPC is found to be about 60ps, which is in good agreement to beam test results.

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LI Liang, SHAO Ming, CHEN Hong-Fang, LI Cheng, TANG Ze-Bo, DONG Xin and WANG Xiao-Lian. Study on MRPC-TOF Timing Properties and Calibration Methods[J]. Chinese Physics C, 2007, 31(6): 576-580.

LI Liang, SHAO Ming, CHEN Hong-Fang, LI Cheng, TANG Ze-Bo, DONG Xin and WANG Xiao-Lian. Study on MRPC-TOF Timing Properties and Calibration Methods[J]. Chinese Physics C, 2007, 31(6): 576-580. shu

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Received: 2006-09-21
Revised: 2006-10-21

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on MRPC-TOF Timing Properties and Calibration Methods

Corresponding author: SHAO Ming,

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

Received Date: 2006-09-21
Accepted Date: 2006-10-21
Available Online: 2007-06-05

Abstract: A prototype Time-of-Flight (TOF) detector, consisting of 28 Multi-gap Resistive Plate Chambers (MRPC), has been successfully operated at RHIC-STAR experiment since 2003. Extensive study on the calibration procedure of the MRPC-TOF is performed in order to better understand MRPC's performance. Improvements and extension on current calibration method are discussed. Furthermore, it has been found that the position resolution of the reconstruction system at STAR has significant impact on the MRPC time resolution. After subtracting this effect, the intrinsic time resolution of MRPC is found to be about 60ps, which is in good agreement to beam test results.