Performance Measurements of the Electromagnetic Calorimeter and Readout Electronics System for the DarkQuest Experiment

Aram Apyan, Christopher Cosby,Yongbin Feng, Alp Gelgen,Stefania Gori,Philip Harris, Xinlong Liu,Mia Liu,Petar MaksimovicTop Scholar,Cristina Mantilla-Suarez, Ryan McLaughlin, Catherine Miller, Amitav Mitra, Noah Paladino, Arghya Ranjan Das, Valdis Slokenbergs,David Sperka, Nhan Tran, Zijie Wan

arXiv · Instrumentation and Detectors（2025）

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Abstract

This paper presents performance measurements of a new readout electronics system based on silicon photomultipliers for the PHENIX electromagnetic calorimeter. Installation of the lead-scintillator Shashlik style calorimeter into the SeaQuest/SpinQuest spectrometer has been proposed to broaden the experiment's dark sector search program, an upgrade known as DarkQuest. The calorimeter and electronics system were subjected to testing and calibration at the Fermilab Test Beam Facility. Detailed studies of the energy response and resolution, as well as particle identification capabilities, were performed. The background rate in the actual experimental environment was also examined. The system is found to be well-suited for a dark sector search program on the Fermilab 120 GeV proton beamline.

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【要点】：本文介绍了基于硅光电倍增管的新的读出电子系统在PHENIX电磁量能器中的性能测量，并验证了其在费米实验室120 GeV质子束线上的暗物质搜索项目中的适用性。

【方法】：通过在费米实验室测试束设施对量能器和电子系统进行测试和校准，详细研究了系统的能量响应和分辨率以及粒子识别能力。

【实验】：在费米实验室测试束设施中，使用Shashlik风格铅-塑料闪烁体量能器和硅光电倍增管读出电子系统，得到了符合暗物质搜索项目要求的性能结果。

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