A concise review on THGEM detectors

Understand

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.