Characterization of Hamamatsu VUV4 SiPM Performance for Liquid Argon Scintillation

Other · Mon Feb 07 00:00:00 EST 2022 · arXiv

OSTI ID:1864571

Pershing, Teal ^[1]; Xu, J. ^[1]; Bernard, E. ^[1]; Kingston, J. ^[2]; Mizrachi, E. ^[3]; Brodsky, J. ^[1]; Razeto, A. ^[4]; Bernstein, A. ^[1]; Pantic, E. ^[5]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Davis, CA (United States)
3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Maryland, College Park, MD (United States)
4. INFN Lab. Nazionali del Gran Sasso, Assergi (Italy)
5. Univ. of California, Davis, CA (United States)

Detection of light signals is crucial to a wide range of particle detectors. In particular, efficient detection of vacuum ultraviolet (VUV) light will provide new opportunities for some novel detectors currently being developed, but is technically challenging. In this article, we characterized the performance of Hamamatsu VUV4 silicon photomultipliers (SiPMs) for detecting VUV argon scintillation light without wavelength shifting. Here, using a customized cryogenic amplifier design, we operated two models of VUV4 SiPMs inside liquid argon and thoroughly examined their direct sensitivities to liquid argon scintillation. In addition to describing their cryogenic performance, we measured a photon detection efficiency of 14.7+1.1–2.4% and 17.2+1.6–3.0% at 128 nm for these two VUV4 models for operation at 4 V of overvoltage, with the main uncertainty arising from the SiPM reflectivity for VUV light.

• Research Organization: Univ. of Michigan, Ann Arbor, MI (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: NA0003920
• OSTI ID: 1864571
• Journal Information: arXiv, Journal Name: arXiv
• Country of Publication: United States
• Language: English