The calibration system for the photomultiplier array of the SNO+ experiment

The calibration system for the photomultiplier array of the SNO+ experiment
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SNO实验光电倍增管阵列标定系统

DOI:
10.1088/1748-0221/10/03/p03002
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发表时间:
2015
影响因子:
1.3
通讯作者:
Alves R
Alves R
中科院分区:
工程技术4区
文献类型:
--
作者:
Alves R

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使用LED和光纤的光注入系统被设计用于SNOLAB的SNO+实验的光电倍增管阵列的校准和监测。用于稀有事件物理学的大体积、非分段、低背景探测器,例如多用途SNO+实验,需要一个校准系统,该系统允许精确和定期测量其光电倍增管阵列的性能参数,同时最大限度地减少放射性侵入的风险。为SNO+实施的设计使用一组光纤将来自外部LED的光脉冲注入检测器。本文介绍了这种光注入系统的设计、制造和安装,以及首次试运行情况。Monte Carlo模拟与调试测试结果进行了比较,确认系统满足性能要求。
A light injection system using LEDs and optical fibres was designed for the calibration and monitoring of the photomultiplier array of the SNO+ experiment at SNOLAB. Large volume, non-segmented, low-background detectors for rare event physics, such as the multi-purpose SNO+ experiment, need a calibration system that allow an accurate and regular measurement of the performance parameters of their photomultiplier arrays, while minimising the risk of radioactivity ingress. The design implemented for SNO+ uses a set of optical fibres to inject light pulses from external LEDs into the detector. The design, fabrication and installation of this light injection system, as well as the first commissioning tests, are described in this paper. Monte Carlo simulations were compared with the commissioning test results, confirming that the system meets the performance requirements.
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