THGEM operation in Ne and Ne/CH4

Details THGEM operation in Ne and Ne/CH4 THGEM operation in Ne and Ne/CH4

2009-05-18

arxiv.org/abs/0905.2916v2

JINST 4:P08001,2009

Physics

Instrumentation and Detectors

Submitted to JINST, 25 pages, 33 figures

Scientific paper

10.1088/1748-0221/4/08/P08001

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.

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