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
TL;DR
This paper evaluates the performance of a silicon photomultiplier-based readout system for the electromagnetic calorimeter in the DarkQuest experiment, demonstrating its suitability for dark sector searches at Fermilab.
Contribution
It introduces a new readout electronics system for the calorimeter and provides detailed performance measurements in a test beam environment.
Findings
Good energy response and resolution
Effective particle identification capabilities
Acceptable background rates for dark sector searches
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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