| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8179027 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2013 | 4 Pages |
Abstract
The multi-channel optical readout of a THGEM multiplier coupled to a matrix of 3Ã3 Geiger-mode APDs (GAPDs) was demonstrated in a two-phase Cryogenic Avalanche Detector (CRAD) in Ar. The GAPDs recorded THGEM-hole avalanches in the Near Infrared (NIR) spectral range. At an avalanche charge gain of 160, the yield of the combined THGEM/GAPD-matrix multiplier amounted to ~80 photoelectrons per 20Â keV X-ray absorbed in the liquid phase. A spatial resolution of 2.5Â mm (FWHM) has been measured for the impinging X-rays. This technique has potential applications in coherent neutrino-nucleus scattering and in dark matter search experiments.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
A. Bondar, A. Buzulutskov, A. Dolgov, A. Grebenuk, E. Shemyakina, A. Sokolov, A. Breskin, D. Thers,