The BDX-MINI detector for Light Dark Matter search at JLab
The BDX-MINI detector for Light Dark Matter search at JLab
复制标题
DOI：
10.1140/epjc/s10052-021-08957-5
复制
发表时间：
2020-11
期刊：
影响因子：
--
通讯作者：
M. Battaglieri;P. Bisio;M. Bond'i;A. Celentano;P. Cole;M. Napoli;R. D. Vita;L. Marsicano;G. Ottonello;F. Parodi;N. Randazzo;E. Smith;D. Snowden-Ifft;M. Spreafico;T. Whitlatch;M. Wood
中科院分区：
文献类型：
--
作者：
M. Battaglieri;P. Bisio;M. Bond'i;A. Celentano;P. Cole;M. Napoli;R. D. Vita;L. Marsicano;G. Ottonello;F. Parodi;N. Randazzo;E. Smith;D. Snowden-Ifft;M. Spreafico;T. Whitlatch;M. Wood
本文介绍了一种紧凑型探测器，BDX-MINI，它结合了所有功能的概念，优化了在MeV-GeV质量范围内的电子束流收集器中产生的光暗物质的检测。它代表了预计在JLAB运行的未来BDX实验的简化版本。BDX-MINI暴露于由2.176 GeV电子束入射到杰斐逊实验室A厅束流收集器产生的穿透粒子。探测器由30.5公斤的PbWO晶体组成，在束流收集器之后有足够的材料来消除除中微子之外的所有已知粒子。晶体是用硅光电倍增管读出的。探测器周围是一个被动的钨层和两个主动闪烁体否决系统，它们也是用硅光电倍增管读出的。该设计得到了验证，稳健探测器的性能在六个月的时间内保持稳定，在此期间，探测器以最小的访问进行操作。
This paper describes the design and performance of a compact detector, BDX-MINI, that incorporates all features of a concept that optimized the detection of light dark matter in the MeV-GeV mass range produced by electrons in a beam dump. It represents a reduced version of the future BDX experiment expected to run at JLAB. BDX-MINI was exposed to penetrating particles produced by a 2.176 GeV electron beam incident on the beam dump of Hall A at Jefferson Lab. The detector consists of 30.5 kg of PbWOcrystals with sufficient material following the beam dump to eliminate all known particles except neutrinos. The crystals are read out using silicon photomultipliers. Completely surrounding the detector are a passive layer of tungsten and two active scintillator veto systems, which are also read out using silicon photomultipliers. The design was validated and the performance of the robust detector was shown to be stable during a six month period during which the detector was operated with minimal access.