Improvement of Nonlinearity Correction for BESIII ETOF Upgrade
Sun, WJ; Cao, P; Ji XL(季晓璐); Dai HL(代洪亮); 张杰(实); Ji, XL; Fan, HH; Dai, HL; Zhang, J; Liu, SB; An, Q
刊名IEEE TRANSACTIONS ON NUCLEAR SCIENCE
2015
卷号62期号:4页码:1766-1770
关键词BESIII calibration endcap time of flight (ETOF) nonlinearity correction time-to-digital converter (TDC)
学科分类Engineering; Nuclear Science & Technology
DOI10.1109/TNS.2015.2454732
文章类型Article
英文摘要An improved scheme to implement integral non-linearity (INL) correction of time measurements in the Beijing Spectrometer III Endcap Time-of-Flight (BESIII ETOF) upgrade system is presented in this paper. During upgrade, multi-gap resistive plate chambers (MRPC) are introduced as ETOF detectors which increases the total number of time measurement channels to 1728. The INL correction method adopted in BESIII TOF proved to be of limited use, because the sharply increased number of electronic channels required for reading out the detector strips degrade the system configuration efficiency severely. Furthermore, once installed into the spectrometer, BESIII TOF electronics do not support the TDCs' nonlinearity evaluation online. In this proposed method, INL data used for the correction algorithm are automatically imported from a non-volatile read-only memory (ROM) instead of from data acquisition software. This guarantees the real-time performance and system efficiency of the INL correction, especially for the ETOF upgrades with massive number of channels. Besides, a signal that is not synchronized to the system 41.65 MHz clock from BEPCII is sent to the frontend electronics (FEE) to simulate pseudo-random test pulses for the purpose of online nonlinearity evaluation. Test results show that the time measuring INL errors in one module with 72 channels can be corrected online and in real time.
类目[WOS]Engineering, Electrical & Electronic ; Nuclear Science & Technology
收录类别SCI ; EI
WOS记录号WOS:000360016400009
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228656
专题中国科学院高能物理研究所_实验物理中心_期刊论文
中国科学院高能物理研究所_实验物理中心
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Sun, WJ,Cao, P,Ji XL,et al. Improvement of Nonlinearity Correction for BESIII ETOF Upgrade[J]. IEEE TRANSACTIONS ON NUCLEAR SCIENCE,2015,62(4):1766-1770.
APA Sun, WJ.,Cao, P.,季晓璐.,代洪亮.,张杰.,...&An, Q.(2015).Improvement of Nonlinearity Correction for BESIII ETOF Upgrade.IEEE TRANSACTIONS ON NUCLEAR SCIENCE,62(4),1766-1770.
MLA Sun, WJ,et al."Improvement of Nonlinearity Correction for BESIII ETOF Upgrade".IEEE TRANSACTIONS ON NUCLEAR SCIENCE 62.4(2015):1766-1770.
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