The sand-glass gas detector (SGG)

• Published in: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 478; no. 1; pp. 190 - 195
• Main Authors: Majewski, P, Brom, J.-M, Ćwiok, M, Dominik, W, Królikowski, J, Labbé, J.-C, Lounis, A, Veenhof, R
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Elsevier B.V 01-02-2002; Elsevier
• Subjects: Micro-pattern gas detector; The Sand-Glass Gas detector (SGG); Micro-pattern gas detector; The Sand-Glass Gas detector (SGG); 29.40.Cs; 29.40.Gx
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/S0168-9002(01)01755-7

A novel position-sensitive micro-pattern gas detector called Sand-Glass is introduced. It has been manufactured using printed circuit board technique and its structure is based on two thin kapton foils joined together. The foils are copper-clad on both sides with the strip electrodes structure engraved on either side, and with a very dense perforation in the form of a conically shaped hole pattern etched through both foils, which forms the Sand-Glass shape. The two foils are in electrical contact; the outer faces form cathodes, and the inner layer becomes an anode. Due to the electric field symmetry, electrons from avalanches are collected on the central electrode of the Sand-Glass holes. This geometry may allow 2D readout in the single gas amplification structure. Preliminary results of the SGG detector prototype tests are reported.