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Calibration of pulse transit time through a cable for EAS experiments

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【作者】 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

【Author】 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;Shandong University;Institute of High Energy Physics, Chinese Academy of Sciences;

【机构】 Shandong UniversityInstitute of High Energy Physics, Chinese Academy of Sciences

【摘要】 In ground-based extensive air shower experiments, the direction and energy are reconstructed by measuring 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 photomultiplier 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.

【Abstract】 In ground-based extensive air shower experiments, the direction and energy are reconstructed by measuring 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 photomultiplier 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.

【基金】 Supported by Ministry of Science and Technology of China;Natural Sciences Foundation of China(11135010,11105156);973 Programof China(2013CB837000);Youth Innovation Promotion Association;Chinese Academy of Sciences
  • 【文献出处】 Chinese Physics C ,中国物理C , 编辑部邮箱 ,2014年06期
  • 【分类号】TL81
  • 【被引频次】1
  • 【下载频次】43
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