Liquid Hole Multipliers: bubble-assisted electroluminescence in liquid xenon

被引：23
|
作者：
Arazi, L. [1 ]
Erdal, E. [1 ]
Coimbra, A. E. C. [1 ,2 ]
Rappaport, M. L. [1 ]
Vartsky, D. [1 ]
Chepel, V. [2 ]
Breskin, A. [1 ]
机构：
[1] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-7610001 Rehovot, Israel
[2] Univ Coimbra, Dept Phys, P-3004516 Coimbra, Portugal
来源：
JOURNAL OF INSTRUMENTATION | 2015年 / 10卷
基金：
以色列科学基金会;
关键词：
Charge transport; multiplication and electroluminescence in rare gases and liquids; Noble liquid detectors (scintillation; ionization; double-phase); Micropattern gaseous detectors (MSGC; GEM; THGEM; RETHGEM; MHSP; MICROPIC; MICROMEGAS; InGrid; etc); DARK-MATTER EXPERIMENT; DETECTORS; SCINTILLATION; COUNTER; PANDAX; GEM;
D O I：
10.1088/1748-0221/10/08/P08015
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In this work we discuss the mechanism behind the large electroluminescence signals observed at relatively low electric fields in the holes of a Thick Gas Electron Multiplier (THGEM) electrode immersed in liquid xenon. We present strong evidence that the scintillation light is generated in xenon bubbles trapped below the THGEM holes. The process is shown to be remarkably stable over months of operation, providing - under specific thermodynamic conditions - energy resolution similar to that of present dual-phase liquid xenon experiments. The observed mechanism may serve as the basis for the development of Liquid Hole Multipliers (LHMs), capable of producing local charge-induced electroluminescence signals in large-volume single-phase noble-liquid detectors for dark matter and neutrino physics experiments.
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收藏
页数：23
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