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Further studies of GEM performance in dense noble gases | | V. Aulchenko
; A. Bondar
; A. Buzulutskov
; L. Shekhtman
; R. Snopkov
; Yu. Tikhonov
; | | Date: |
25 Nov 2002 | | Journal: | Nucl.Instrum.Meth. A513 (2003) 256-259 | | Subject: | Instrumentation and Detectors | physics.ins-det hep-ex | | Abstract: | We further study the performance of single, double and triple Gas Electron Multiplier (GEM) detectors in pure noble gases at high pressures, in the range of 1-10 atm. We confirm that light noble gases, in particular He and its mixtures with Kr, have the highest gain, reaching 10^6, and an unusual gain dependence on pressure. Effects of the number of GEMs, GEM hole diameter and pitch are investigated in detail. In He, avalanche-induced secondary scintillations are observed at high gains, using the metal photocathode. These results are relevant in the field of avalanche mechanism in noble gases and X-ray, neutron and cryogenic particle detectors. | | Source: | arXiv, physics/0211101 | | Services: | Forum | Review | PDF | Favorites | |
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