Calibration of pulse transit time through a cable for EAS experiments

In ground-based extensive air shower expemments, the chrection and energy are reconstructecl Dy mea- suring the relative arrival time of secondary particles, and the energy they deposit. The measurement precision of the arrival time is crucial for determination of the angular resolution. For this pu...

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Published inChinese physics C Vol. 38; no. 6; pp. 55 - 59
Main Author 钱祥利 常劲帆 冯存峰 冯朝阳 苟全补 郭义庆 胡红波 刘成 王铮 薛良 张学尧 张毅
Format Journal Article
LanguageEnglish
Published 01.06.2014
Subjects
Arrivals
Boards
Cables
Calibration
Detectors
EAS
Energy measurement
Offsets
Transit time
中微子实验
传输时间
到达时间
校准方法
测量精度
脉冲
长电缆
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ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/38/6/066202

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Summary:In ground-based extensive air shower expemments, the chrection and energy are reconstructecl Dy mea- suring the relative arrival time of secondary particles, and the energy they deposit. The measurement precision of the arrival time is crucial for determination of the angular resolution. For this purpose, we need to obtain a precise relative time offset for each detector and to apply the calibration process. The time offset is associated with the pho- tomultiplier tube, cable, relevant electronic circuits, etc. In view of the transit time through long cables being heavily dependent on the ambient temperature, a real-time calibration method for the cable transit time is investigated in this paper. Even with a poor-resolution time-to-digital converter, this method can achieve high precision. This has been successfully demonstrated with the Front-End-Electronic board used in the Daya Bay neutrino experiment.
Bibliography:11-5641/O4
QIAN Xiang-Li,CHANG Jin-Fan,FENG Cun-Feng,FENG Zhao-Yang,GOU Quan-Bu,GUO Yi-Qing,HU Hong-Bo,LIU Cheng,WANG Zheng,XUE Liang,ZHANG Xue-Yao, ZHANG Yi（1 Shandong University, Jinan 250100, China;2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China）
EAS experiment, time-walk effect, real-time calibration, transit time
In ground-based extensive air shower expemments, the chrection and energy are reconstructecl Dy mea- suring the relative arrival time of secondary particles, and the energy they deposit. The measurement precision of the arrival time is crucial for determination of the angular resolution. For this purpose, we need to obtain a precise relative time offset for each detector and to apply the calibration process. The time offset is associated with the pho- tomultiplier tube, cable, relevant electronic circuits, etc. In view of the transit time through long cables being heavily dependent on the ambient temperature, a real-time calibration method for the cable transit time is investigated in this paper. Even with a poor-resolution time-to-digital converter, this method can achieve high precision. This has been successfully demonstrated with the Front-End-Electronic board used in the Daya Bay neutrino experiment.
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ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/38/6/066202