Physics – Instrumentation and Detectors
Scientific paper
2008-07-13
Nucl.Instrum.Meth.A598:107-111,2009
Physics
Instrumentation and Detectors
8 pages, 11 figures; Invited Review at INSTR08, Novosibirsk, Feb 28-March 5 2008
Scientific paper
10.1016/j.nima.2008.08.062
We briefly review the concept and properties of the Thick GEM (THGEM); it is a robust, high-gain gaseous electron multiplier, manufactured economically by standard printed-circuit drilling and etching technology. Its operation and structure resemble that of GEMs but with 5 to 20-fold expanded dimensions. The millimeter-scale hole-size results in good electron transport and in large avalanche-multiplication factors, e.g. reaching 10^7 in double-THGEM cascaded single-photoelectron detectors. The multiplier's material, parameters and shape can be application-tailored; it can operate practically in any counting gas, including noble gases, over a pressure range spanning from 1 mbar to several bars; its operation at cryogenic (LAr) conditions was recently demonstrated. The high gain, sub-millimeter spatial resolution, high counting-rate capability, good timing properties and the possibility of industrial production capability of large-area robust detectors, pave ways towards a broad spectrum of potential applications; some are discussed here in brief.
Alon Raz
Breskin Amos
Chechik Rachel
Cortesi Marco
Dangendorf Volker
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