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6588059 
Journal Article 
Performance of a triple-GEM detector for high rate charged particle triggering 
Bencivenni, G; de Simone, P; Murtas, F; Lener, MP; Bonivento, W; Cardini, A; Deplano, C; Pinci, D; Raspino, D; , 
2002 
1 
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ISSN: 0168-9002 
ELSEVIER SCIENCE BV 
AMSTERDAM 
494 
1-3 
156-162 
WOS:000179527800023 
We report the results of a systematic study of the performance of 10 x 10 cm 2 triple-GEM detectors operated with several gas mixtures.In a previous paper, we pointed out that adding CF4 to the standard Ar/CO2 gas mixture allows to improve the time resolution of the detector from similar to10 ns down to similar to6 ns (r.m.s.). In this paper, we discuss the results obtained with CF4 and iSO-C4H10-based gas mixtures, during a beam test at the piM1 beam facility of the Paul Scherrer Institute (PSI).Preliminary results concerning the discharge probability of triple-GEM detector, when exposed to both high intensity pion/proton beam and alpha-particles from a radioactive source are presented. Gain measurements and aging tests, using a high intensity 5.9 keV X-ray tube, are eventually discussed. (C) 2002 Elsevier Science B.V. All rights reserved. 
GEM; tracking; aging; discharge 
8th International Conference on Instrumentation for Colliding Beam Physics 
NOVOSIBIRSK, RUSSIA 
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