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

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.

19 pages, 17 figures, published in JINST

References in corpus (6)

• First limits on WIMP nuclear recoil signals in ZEPLIN-II: a two phase xenon detector for dark matter detection
• First Tests of Thick GEMs with Electrodes Made of a Resistive Kapton
• Investigations of a THGEM-based imaging detector
• Development of innovative micropattern gaseous detectors with resistive electrodes and first results of their applications
• Thick GEM-like (THGEM) detectors and their possible applications
• Toward Application of a Thick Gas Electron Multiplier (THGEM) Readout for a Dark Matter Detector

Cited by in corpus (12)

• A concise review on THGEM detectors
• Liquid noble gas detectors for low energy particle physics
• Advances in Gaseous Photomultipliers
• THGEM operation in Ne and Ne/CH4
• CsI-THGEM gaseous photomultipliers for RICH and noble-liquid detectors
• First results on light readout from the 1-ton ArDM liquid argon detector for dark matter searches
• Micromegas operation in high pressure xenon: charge and scintillation readout
• Operation of a THGEM-based detector in low-pressure Helium
• Time resolution of a Thick Gas Electron Multiplier (THGEM) - based detector
• The Thick Gas Electron Multiplier and its derivatives: physics, technologies and applications
• Cosmic Ray Test of Mini-drift Thick Gas Electron Multiplier Chamber for Transition Radiation Detector
• High pressure operation of the Photon-Assisted Cascaded Electron Multiplier