TY - JOUR
T1 - Two-phase Cryogenic Avalanche Detector with electroluminescence gap operated in argon doped with nitrogen
AU - Bondar, A.
AU - Buzulutskov, A.
AU - Dolgov, A.
AU - Nosov, V.
AU - Shekhtman, L.
AU - Shemyakina, E.
AU - Sokolov, A.
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/2/11
Y1 - 2017/2/11
N2 - A two-phase Cryogenic Avalanche Detector (CRAD) with electroluminescence (EL) gap, operated in argon doped with a minor (49±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 N2 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.
AB - A two-phase Cryogenic Avalanche Detector (CRAD) with electroluminescence (EL) gap, operated in argon doped with a minor (49±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 N2 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.
KW - Argon doped with nitrogen
KW - Dark matter detectors
KW - Electroluminescence
KW - Two-phase detectors
KW - AR
KW - YIELD
KW - RARE-EVENT EXPERIMENTS
KW - SCINTILLATION
KW - SPECTRA
KW - LIQUID ARGON
UR - http://www.scopus.com/inward/record.url?scp=84971671944&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2016.05.109
DO - 10.1016/j.nima.2016.05.109
M3 - Article
AN - SCOPUS:84971671944
VL - 845
SP - 206
EP - 209
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
ER -