THGEM operation in Ne and Ne/CH4

Abstract

The operation of Thick Gaseous Electron Multipliers (THGEM) in Ne and Ne/CH4 mixtures, features high multiplication factors at relatively low operation potentials, in both single- and double-THGEM configurations. We present some systematic data measured with UV-photons and soft x-rays, in various Ne mixtures. It includes gain dependence on hole diameter and gas purity, photoelectron extraction efficiency from CsI photocathodes into the gas, long-term gain stability and pulse rise-time. Position resolution of a 100x100 mm^2 X-rays imaging detector is presented. Possible applications are discussed.

Submitted to JINST, 25 pages, 33 figures

References in corpus (5)

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• Toward Application of a Thick Gas Electron Multiplier (THGEM) Readout for a Dark Matter Detector