SiPM-based readouts are becoming the standard for light detection in particle detectors given their superior resolution and ease of use with respect to vacuum tube photo-multipliers. However, the contributions of detection noise such as the dark rate, cross-talk, and after-pulsing may impact significantly their performance. In this work, we present the development of highly reflective single-phase argon chambers capable of light yields up to 32 photo-electrons per keV, with roughly 12 being primary photo-electrons generated by the argon scintillation, while the rest are accounted by optical cross-talk. Furthermore, the presence of compound processes results in a generalized Fano factor larger than 2 already at an over-voltage of 5 V. Finally, we present a parametrization of the optical cross-talk for the FBK NUV-HD-Cryo SiPMs at 87 K that can be extended to future detectors with tailored optical simulations.
@article{arxiv.2201.01632,
title = {SiPM cross-talk in liquid argon detectors},
author = {M. G. Boulay and V. Camillo and N. Canci and S. Choudhary and L. Consiglio and A. Flammini and C. Galbiati and C. Ghiano and A. Gola and S. Horikawa and P. Kachru and I. Kochanek and K. Kondo and G. Korga and M. Kuźniak and A. Mazzi and A. Moharana and G. Nieradka and G. Paternoster and A. Razeto and D. Sablone and T. N. Thorpe and C. Türkoğlu and H. Wang and M. Rescigno and S. Sanfilippo},
journal= {arXiv preprint arXiv:2201.01632},
year = {2024}
}