The Thick-COBRA: a New Gaseous Electron Multiplier for Radiation Detectors
arXiv:1008.0830 · doi:10.1088/1748-0221/5/10/P10002
Abstract
The operation principle and preliminary results of a novel gas-avalanche patterned hole electron multiplier, the Thick-COBRA (THCOBRA), are presented. This micro-hole structure is derived from the THGEM and MHSP. Sub-millimeter diameter holes are mechanically drilled in a thin G10 plate, Cu-clad on both faces; on one of the faces the Cu is etched to produce additional anode strips winding between circular cathode strips. Primary avalanches occurring within the holes are followed by additional ones at the anode-strips vicinity. Gains in excess of 5*104 were reached with 22.1 x-rays in Ar, Ne and Ar-10%CH4, with 12.2 % FWHM energy resolution in Ar-10%CH4. Higher gains were measured with single photoelectrons. This robust multiplier may have numerous potential applications.
paper submitted to JINST
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Cited by in corpus (6)
- The Thick Gas Electron Multiplier and its derivatives: physics, technologies and applications
- First performance evaluation of a Multi-layer Thick Gaseous Electron Multiplier with in-built electrode meshes - MM-THGEM
- Novel electron and photon recording concepts in noble-liquid detectors
- Evolution and Recent Developments of the Gaseous Photon Detectors Technologies
- Optical Readout Studies of the Thick-COBRA Gaseous Detector
- First results on FHM -- a Floating Hole Multiplier