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arXiv:2002.04218 (physics)
[Submitted on 11 Feb 2020]

Title:Reflectance of Silicon Photomultipliers in Linear Alkylbenzene

Authors:W. Wang, G.F. Cao, Z.Q. Xie, J. Cao, M. Qi, L.J. Wen
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Abstract:Reflectance of silicon photomultipliers (SiPMs) is an important aspect to understand the large scale SiPM-based detector systems and evaluate the performance of SiPMs. We report the reflactance of two SiPMs, NUV-HD-lowCT and S14160-60-50HS manufactured by Fondazione Bruno Kessler (FBK) and Hamamatsu Photonics K.K. (HPK) respectively, in linear alkylbenzene (LAB) and in air at visible wavelengths. Our results show that the reflectance of the FBK SiPM in air varies in the range of 14% to 23% , depending on wavelengths and angle of incidence, which is 2 time larger than that of the HPK device. This indicates that the two manufacturers are using different designs of anti-reflective coating on SiPMs' surfaces. The reflectance is reduced by about 10% when SiPMs are immersed in LAB, compared with that measured in air. The profiles of reflected light beams are also measured by a charge-coupled device (CCD) camera for the two SiPMs.
Subjects: Instrumentation and Detectors (physics.ins-det); High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:2002.04218 [physics.ins-det]
  (or arXiv:2002.04218v1 [physics.ins-det] for this version)
  https://doi.org/10.48550/arXiv.2002.04218
Related DOI: https://doi.org/10.1016/j.nima.2020.164171

Submission history

From: Guofu Cao [view email]
[v1] Tue, 11 Feb 2020 05:51:06 UTC (528 KB)
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