Abstract
Silicon photomultipliers are regarded as a very promising technology for next-generation, cutting-edge detectors for low-background experiments in particle physics. This work presents systematic reflectivity studies of Silicon Photomultipliers (SiPM) and other samples in liquid xenon at vacuum ultraviolet (VUV) wavelengths. A dedicated setup at the University of Münster has been used that allows to acquire angle-resolved reflection measurements of various samples immersed in liquid xenon with 0.45 angular resolution. Four samples are investigated in this work: one Hamamatsu VUV4 SiPM, one FBK VUV-HD SiPM, one FBK wafer sample and one Large-Area Avalanche Photodiode (LA-APD) from EXO-200. The reflectivity is determined to be 25-36 % at an angle of incidence of 20 for the four samples and increases to up to 65 % at 70 for the LA-APD and the FBK samples. The Hamamatsu VUV4 SiPM shows a decline with increasing angle of incidence. The reflectivity results will be incorporated in upcoming light response simulations of the nEXO detector.
Original language | English |
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Article number | P08002 |
Journal | Journal of Instrumentation |
Volume | 16 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2021 |
Bibliographical note
Publisher Copyright:© 2021 IOP Publishing Ltd and Sissa Medialab.
Keywords
- APDs
- CCDs
- CMOS imagers
- EBCCDs
- EMCCDs
- G-APDs
- Photon detectors for UV
- Photon detectors for UV
- Si-PMTs
- etc)
- visible and IR photons (solid-state)
- visible and IR photons (solid-state)(PIN diodes
ASJC Scopus subject areas
- Instrumentation
- Mathematical Physics