Gain limits of a Thick GEM in high-purity Ne, Ar and Xe

Abstract

The dependence of the avalanche charge gain in Thick Gas Electron Multipliers (THGEM) on the purity of Ne, Ar and Xe filling gases was investigated. The gain, measured with alpha-particles in standard conditions (atmospheric pressure, room temperature), was found to considerably drop in gases purified by non-evaporable getters. On the other hand, small N2 admixtures to noble gases resulted in high reachable gains. The results are of general relevance in the operation of gas-avalanche detectors in noble gases, particularly that of two-phase cryogenic detectors for rare events.

15 pages, 6 figures, submitted to JINST

References in corpus (9)

• A concise review on THGEM detectors
• Advances in Gaseous Photomultipliers
• Thick GEM versus thin GEM in two-phase argon avalanche detectors
• Operation of a double-phase pure argon Large Electron Multiplier Time Projection Chamber: comparison of single and double phase operation
• GEM operation in helium and neon at low temperatures
• Electron emission properties of two-phase argon and argon-nitrogen avalanche detectors
• A Study of the Operation of Especially Designed Photosensitive Gaseous Detectors at Cryogenic Temperatures
• Gas Purity effect on GEM Performance in He and Ne at Low Temperatures
• Photosensitive Gaseous Detectors for Cryogenic Temperature Applications

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• Advances in Cryogenic Avalanche Detectors
• Gaseous and dual-phase time projection chambers for imaging rare processes
• CsI-THGEM gaseous photomultipliers for RICH and noble-liquid detectors
• First demonstration of 3D optical readout of a TPC using a single photon sensitive Timepix3 based camera
• On the low-temperature performances of THGEM and THGEM/G-APD multipliers in gaseous and two-phase Xe
• Operation of a THGEM-based detector in low-pressure Helium
• The Thick Gas Electron Multiplier and its derivatives: physics, technologies and applications
• Studies of THGEM-based detector at low-pressure Hydrogen/Deuterium, for AT-TPC applications
• Scintillation and charge extraction from the tracks of energetic electrons in superfluid helium-4
• Cosmic Ray Test of Mini-drift Thick Gas Electron Multiplier Chamber for Transition Radiation Detector
• Charge and Light Production in the Charge Readout System of a Dual Phase LAr TPC