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Geiger Mode APD performance in a cryogenic two-phase Ar avalanche detector based on THGEMs
- Source :
- Nucl.Instrum.Meth.A628:364-368,2011
- Publication Year :
- 2010
-
Abstract
- Characteristic properties of a Geiger Mode APD (G-APD) in a THGEM-based cryogenic two-phase Ar avalanche detector were studied in view of potential applications in rare-event experiments. G-APD signal amplitude and noise characteristics at cryogenic temperatures turned out to be superior to those at room temperature. The effective detection of avalanche scintillations from THGEM-multiplier holes in two-phase Ar has been demonstrated using a G-APD without wavelength shifter. At an avalanche gain of 60, the avalanche scintillation yield measured by the G-APD was as high as 0.9 photoelectrons per avalanche electron, extrapolated to 4pi acceptance.<br />Comment: 4 pages, 8 figures. Presented at Vienna Conference on Instrumentation (Feb 15-20, 2010, Vienna, Austria). Submitted to the Proceedings
- Subjects :
- Physics - Instrumentation and Detectors
Subjects
Details
- Database :
- arXiv
- Journal :
- Nucl.Instrum.Meth.A628:364-368,2011
- Publication Type :
- Report
- Accession number :
- edsarx.1003.1597
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.nima.2010.07.002