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Physics > Instrumentation and Detectors

arXiv:1605.08729 (physics)
[Submitted on 27 May 2016]

Title:Two-phase Cryogenic Avalanche Detector with electroluminescence gap operated in argon doped with nitrogen

Authors:A. Bondar, A. Buzulutskov, A. Dolgov, V. Nosov, L. Shekhtman, E. Shemyakina, A. Sokolov
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Abstract:A two-phase Cryogenic Avalanche Detector (CRAD) with electroluminescence (EL) gap, operated in argon doped with a minor (49$\pm$7 ppm) admixture of nitrogen, has been studied. The EL gap was optically read out using cryogenic PMTs located on the perimeter of the gap. We present the results of the measurements of the N$_2$ content, detector sensitivity to X-ray-induced signals, EL gap yield and electron lifetime in the liquid. The detector sensitivity, at a drift field in liquid Ar of 0.6 kV/cm, was measured to be 9 and 16 photoelectrons recorded at the PMTs per keV of deposited energy at 23 and 88 keV respectively. Such two-phase detectors, with enhanced sensitivity to the S2 (ionization-induced) signal, are relevant in the field of argon detectors for dark matter search and low energy neutrino detection.
Comments: 4 pages, 5 figures. Presented at Vienna Conference of Instrumentation (2016). To be published in Nucl. Instr. Meth. A
Subjects: Instrumentation and Detectors (physics.ins-det); High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:1605.08729 [physics.ins-det]
  (or arXiv:1605.08729v1 [physics.ins-det] for this version)
  https://doi.org/10.48550/arXiv.1605.08729
Journal reference: Nucl. Instr. Meth. A 845 (2017) 206
Related DOI: https://doi.org/10.1016/j.nima.2016.05.109

Submission history

From: Alexei Buzulutskov [view email]
[v1] Fri, 27 May 2016 17:56:55 UTC (959 KB)
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