First imaging results of a bubble-assisted Liquid Hole Multiplier with SiPM readout in liquid xenon
Abstract
First imaging results in liquid xenon of a Liquid Hole Multiplier (LHM) coupled to a quad-Silicon Photomultiplier (SiPM) array are presented. Ionization electrons deposited in the noble liquid by 5.5 MeV alpha particles, are collected into the holes of a Thick Gas Electron Multiplier (THGEM) electrode having a xenon gas bubble trapped underneath. They drift through the liquid-gas interface, inducing electroluminescence within the bubble. The resulting photons are detected with a Hamamatsu VUV4 quad-SiPM array—providing the deposited energy with a charge-only RMS resolution of 6.6%. The image reconstruction resolution was estimated to be ~200 μm (RMS).
- Publication:
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Journal of Instrumentation
- Pub Date:
- January 2019
- DOI:
- 10.1088/1748-0221/14/01/P01028
- arXiv:
- arXiv:1812.00780
- Bibcode:
- 2019JInst..14P1028E
- Keywords:
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- Physics - Instrumentation and Detectors;
- High Energy Physics - Experiment
- E-Print:
- doi:10.1088/1748-0221/14/01/P01028