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arXiv 2301.12486physics.ins-dethep-ex
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宇宙μ子反符合闪烁体探测器的设计、制造与大规模鉴定

Design, fabrication and large scale qualification of cosmic muon veto scintillator detectors

Mandar Saraf, Pandi Raj Chinnappan, Aditya Deodhar, Mamta Jangra, J. Krishnamoorthi, Gobinda Majumder, Veera Padmavathy, K. C. Ravindran, Raj Bhupen Shah, Ravin… 展开作者

Mandar Saraf, Pandi Raj Chinnappan, Aditya Deodhar, Mamta Jangra, J. Krishnamoorthi, Gobinda Majumder, Veera Padmavathy, K. C. Ravindran, Raj Bhupen Shah, Ravindra Shinde, B. Satyanarayana

AI总结:

INO合作组为mini-ICAL探测器设计宇宙μ子反符合探测器(CMVD),采用挤出塑料闪烁体条带制成双计数器,搭建μ子望远镜开展大规模组件鉴定,以满足浅深度稀有事件探测的高效率与低假阳性率要求。

摘要:

INO合作组正在设计一种宇宙μ子反符合探测器(CMVD),用于覆盖位于印度南部马杜赖IICHEP过渡校区已投入运行的mini-ICAL探测器。CMVD的目标是研究在约100米浅深度建造实验装置以记录稀有事件的可行性,并利用塑料闪烁体将大气μ子与探测器靶质量内稀有相互作用产生的μ子进行反符合甄别。该反符合探测器的效率需优于99.99%,假阳性率需低于$10^{-5}$。\nCMVD采用挤出塑料闪烁体(EPS)条带来探测和标记大气μ子,建造CMVD需要700多根EPS条带。将两根EPS条带粘贴在一起制成双计数器(DC),并在EPS条带内部嵌入波长位移光纤,用于捕获穿越的宇宙线μ子产生的闪烁光,并将其作为次级光子传输到安装在DC两端的硅光电倍增管(SiPM)。由于反符合探测器的效率要求相当高,必须对建造CMVD所用的每一个组件进行全面测试。研究团队利用DC搭建了一台宇宙线μ子望远镜,用于对所有即将制造的DC进行鉴定。本文将讨论DC的设计与制造细节、用于其测试的宇宙μ子实验装置和电子学设备,以及测试结果。

英文摘要:

The INO collaboration is designing a cosmic muon veto detector (CMVD) to cover the mini-ICAL detector which is operational at the IICHEP transit campus, Madurai in South India. The aim of the CMVD is to study the feasibility of building an experiment to record rare events at a shallow depth of around 100 m, and use plastic scintillators to veto atmospheric muons from those produced by the rare interactions within the target mass of the detector. The efficiency of such a veto detector should be better than 99.99% and false positive rate of less than $10^{-5}$. The CMVD is being built using extruded plastic scintillator (EPS) strips to detect and tag atmospheric muons. More than 700 EPS strips are required to build the CMVD. Two EPS strips are pasted together to make a di-counter (DC) and wavelength shifting fibres are embedded inside the EPS strips to trap the scintillation light generated by a passing cosmic ray muon and transmit it as secondary photons to the Silicon Photo-Multipliers (SiPMs) mounted at the two ends of the DCs. Since the efficiency requirement of the veto detector is rather high, it is imperative to thoroughly test each and every component used for building the CMVD. A cosmic ray muon telescope has been setup using the DCs to qualify all the DCs that will be fabricated. In this paper we will discuss the details of the design and fabrication of the DCs, and the cosmic muon setup and the electronics used for their testing and the test results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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