THGEM operation in Ne and Ne/CH4

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Cortesi M., Peskov V., Bartesaghi G., Miyamoto J., Cohen S., Chechik R., ...More

JOURNAL OF INSTRUMENTATION, vol.4, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 4
  • Publication Date: 2009
  • Doi Number: 10.1088/1748-0221/4/08/p08001
  • Journal Name: JOURNAL OF INSTRUMENTATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: X-ray detectors, Photon detectors for UV, visible and IR photons (gas), Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MICROMEGAS, InGrid, etc), Electron multipliers (gas), GASEOUS DETECTORS, NOBLE-GASES, GEM, MULTIPLIERS, LIMITATIONS, CHAMBER, LIGHT
  • Bursa Uludag University Affiliated: No

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 100 x 100 mm(2) X-ray imaging detector is presented. Possible applications are discussed.