First demonstration of THGEM/GAPD-matrix optical readout in two-phase Cryogenic Avalanche Detector in Ar

A. Bondar; A. Buzulutskov; A. Dolgov; A. Grebenuk; E. Shemyakina; A. Sokolov; A. Breskin; D. Thers

doi:10.1016/j.nima.2013.07.089

First demonstration of THGEM/GAPD-matrix optical readout in two-phase Cryogenic Avalanche Detector in Ar

Instrumentation and Detectors 2014-08-20 v1 High Energy Physics - Experiment

Authors: A. Bondar , A. Buzulutskov , A. Dolgov , A. Grebenuk , E. Shemyakina , A. Sokolov , A. Breskin , D. Thers

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Abstract

The multi-channel optical readout of a THGEM multiplier coupled to a matrix of 3x3 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). At an avalanche charge gain of 160, the yield of the combined THGEM/GAPD-matrix multiplier amounted at ~80 photoelectrons per 20 keV X-ray absorbed in the liquid phase. A spatial resolution of 2.5 mm (FWHM) has been measured for the impinging X-rays. This technique has potential applications in coherent neutrino-nucleus scattering and dark matter search experiments.

Keywords

THGEM GAPD matrix optical readout two-phase CRAD cryogenic avalanche detector spatial resolution dark matter search

Cite

@article{arxiv.1303.4817,
  title  = {First demonstration of THGEM/GAPD-matrix optical readout in two-phase Cryogenic Avalanche Detector in Ar},
  author = {A. Bondar and A. Buzulutskov and A. Dolgov and A. Grebenuk and E. Shemyakina and A. Sokolov and A. Breskin and D. Thers},
  journal= {arXiv preprint arXiv:1303.4817},
  year   = {2014}
}

Comments

4 pages, 6 figures. Presented at Vienna Conference of Instrumentation (Feb 15-20, 2013, Vienna, Austria). Submitted to the Proceedings

First demonstration of THGEM/GAPD-matrix optical readout in two-phase Cryogenic Avalanche Detector in Ar

Abstract

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