GlueX实验桶部电磁量能器的建造与性能
仪器与探测器
2018-05-01 v2 核实验
摘要
桶部量能器是杰斐逊实验室D厅为GlueX实验安装的新谱仪的一部分。该量能器于2013年安装，2014年调试，自2015年初起常规运行。本文描述了探测器的构型、相关的蒙特卡洛模拟、校准及运行性能。量能器记录由多GeV光子束产生的带电与中性粒子沉积的时间和能量。它采用铅与闪烁光纤量能器构造，由3840个大面积硅光电倍增器阵列读出。粒子以广角范围入射探测器，从90度法向入射到11.5度，这定义了在量能器中相当独特的几何结构。量能器的响应已在运行实验中测得，对低于2.5 GeV的电磁簇射表现符合预期。我们利用π^0和η产生在典型角分布上积分的能量分辨率σ_E/E=5.2%/√E(GeV)⊕3.6%以及1 GeV下150 ps的时间分辨率σ来表征BCAL的性能。
引用
@article{arxiv.1801.03088,
title = {Construction and Performance of the Barrel Electromagnetic Calorimeter for the GlueX Experiment},
author = {Tegan Beattie and Ahmed Foda and Colleen Henschel and S Katsaganis and Shaun Krueger and George Lolos and Zisis Papandreou and E. L. Plummer and Irina Semenova and Andrei Semenov and Fernando Barbosa and Eugene Chudakov and Mark Dalton and David Lawrence and Yi Qiang and Nicholas Sandoval and Elton Smith and Christopher Stanislav and Justin Stevens and Simon Taylor and Timothy Whitlatch and Benedikt Zihlmann and William Levine and William McGinley and Curtis Meyer and Michael Staib and Efstratios Anassontzis and Christina Kourkoumelis and Georgios Vasileiadis and George Voulgaris and William Brooks and Hayk Hakobyan and Sergey Kuleshov and R. Rojas and Christian Romero Vieyra and Orlando Soto Sandoval and Alam Toro Salas and Juan Vega Vergara and Matthew Shepherd},
journal= {arXiv preprint arXiv:1801.03088},
year = {2018}
}
备注
46 pages, 33 figures