The study of time calibration for upgraded end cap TOF of BESIII
The study of time calibration for upgraded end cap TOF of BESIII
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DOI：
10.1007/s41605-017-0012-4
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发表时间：
2017-07
影响因子：
0.6
通讯作者：
Ying-Xiao Guo;Shengsen Sun;F. An;R. Yang;Ming Zhou;Zhi Wu;H. Dai;Y. Heng;Cheng Li;Zi-Yan Deng;Huai-min Liu;Wei-guo Li
中科院分区：
文献类型：
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作者：
Ying-Xiao Guo;Shengsen Sun;F. An;R. Yang;Ming Zhou;Zhi Wu;H. Dai;Y. Heng;Cheng Li;Zi-Yan Deng;Huai-min Liu;Wei-guo Li
目的采用多间隙电阻板室技术对北京谱仪端盖飞行时间进行升级，以提高带电粒子的识别能力。用过阈值时间代替信号幅度进行时间回转校正。方法研究了多峰过阈值时间与带电粒子沿带沿着的撞击位置的相关性。结果与结论对动量约为0.8GeV/c的π介子的总时间分辨约为65 ps。
PurposeThe end cap time of flight at Beijing Spectrometer is upgraded with multi-gap resistive plate chamber technology in order to improve the charged particle identification capability. The time-over-threshold is used for the time slewing correction instead of the signal amplitude.MethodsThe correlation of the multi-peak time-over-threshold and the hit position along the strip of the charged particle is investigated. Implementation of the off-line data calibration method is discussed in detail.Results and conclusionThe overall time resolution for pions with momentum around 0.8 GeV/c is about 65 ps.