2007/07/31 by M. Cortesi, M Cortesi, R. Alon +9
Engineering · Physics and Astronomy · #CCD and CMOS Imaging Sensors #Particle Detector Development and Performance #Photocathodes and Microchannel Plates #physics.ins-det
paper · pdf · doi:10.1088/1748-0221/2/09/p09002
published as JINST2:P09002,2007 · Published in JINST, 22 pages, 18 figures
openalex publication_date 2007/09/04 · arxiv created 2007/12/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We present the results of our recent studies on a Thick Gas Electron Multiplier (THGEM)-based imaging detector prototype. It consists of two 100 × 100 mm 2 THGEM electrodes in cascade, coupled to a resistive anode. The event location is recorded with a 2D double-sided readout electrode equipped with discrete delay-lines and dedicated electronics. The THGEM electrodes, produced by standard printed-circuit board and mechanical drilling techniques, a 0.4 mm thick with 0.5 mm diameter holes spaced by 1 mm. Localization resolutions of about 0.7 mm (FWHM) were measured with soft x-rays, in a detector operated with atmospheric-pressure Ar/CH 4 ; good linearity and homogeneity were achieved. We describe the imaging-detector layout, the resistive-anode 2D readout system and the imaging properties. The THGEM has numerous potential applications that require large-area imaging detectors, with high-rate capability, single-electron sensitivity and moderate (sub-mm) localization resolution.