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arXiv · 0712.0485

Operation of a Thick Gas Electron Multiplier (THGEM) in Ar, Xe and Ar-Xe

R. Alon·J. Miyamoto·M. Cortesi·A. Breskin·R. Chechik·I. Carne·J. M. Maia·J. M. F. dos Santos·M. Gai·D. McKinsey·V. Dangendorf
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Abstract

We present the results of our recent studies of a Thick Gaseous Electron Multiplier (THGEM)-based detector, operated in Ar, Xe and Ar:Xe (95:5) at various gas pressures. Avalanche-multiplication properties and energy resolution were investigated with soft x-rays for different detector configurations and parameters. Gains above 10E4 were reached in a double-THGEM detector, at atmospheric pressure, in all gases, in almost all the tested conditions; in Ar:Xe (95:5) similar gains were reached at pressures up to 2 bar. The energy resolution dependence on the gas, pressure, hole geometry and electric fields was studied in detail, yielding in some configurations values below 20% FWHM with 5.9 keV x-rays.

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R. Alon, J. Miyamoto, M. Cortesi, A. Breskin, R. Chechik, I. Carne, J. M. Maia, J. M. F. dos Santos, M. Gai, D. McKinsey, V. Dangendorf. 2007-12-26. Operation of a Thick Gas Electron Multiplier (THGEM) in Ar, Xe and Ar-Xe. https://doi.org/10.1088/1748-0221/3/01/p01005

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