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arXiv · 2502.20590

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 Maksimovic·Cristina Mantilla-Suarez·Ryan McLaughlin·Catherine Miller·Amitav Mitra·Noah Paladino·Arghya Ranjan Das·Valdis Slokenbergs·David Sperka·Nhan Tran·Zijie Wan
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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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Aram Apyan, Christopher Cosby, Yongbin Feng, Alp Gelgen, Stefania Gori, Philip Harris, Xinlong Liu, Mia Liu, Petar Maksimovic, Cristina Mantilla-Suarez, Ryan McLaughlin, Catherine Miller, Amitav Mitra, Noah Paladino, Arghya Ranjan Das, Valdis Slokenbergs, David Sperka, Nhan Tran, Zijie Wan. 2025-02-27. Performance measurements of the electromagnetic calorimeter and readout electronics system for the DarkQuest experiment. https://doi.org/10.1016/j.nima.2025.170792

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