Title of article
Further studies of GEM performance in dense noble gases
Author/Authors
Aulchenko، نويسنده , , V. and Bondar، نويسنده , , A. and Buzulutskov، نويسنده , , A. Z. Shekhtman، نويسنده , , L. and Snopkov، نويسنده , , R. and Tikhonov، نويسنده , , Yu.، نويسنده ,
Pages
4
From page
256
To page
259
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 106, 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.
Keywords
Gas electron multipliers , noble gases , Associative ionization , Secondary scintillations , High pressures
Journal title
Astroparticle Physics
Record number
2021609
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