Title :
Aging measurements on triple-GEM detectors operated with CF4-based gas mixtures
Author :
Alfonsi, M. ; Baccaro, S. ; Bencivenni, G. ; Bonivento, W. ; Cardini, A. ; de Simone, P. ; Murtas, F. ; Pinci, D. ; Lener, M. Poli ; Raspino, D. ; Saitta, B.
Author_Institution :
Lab. Nazionali di Frascati, Ist. Nazionale di Fisica Nucl., Frascati, Italy
Abstract :
We present the results of a global irradiation test of full size triple-GEM detectors operated with CF4-based gas mixtures. This study has been performed in the framework of an R&D activity on detectors for the innermost region of the first muon station of the LHCb experiment. The prototypes have been irradiated at the Calliope facility of the ENEA-Casaccia with a high intensity 1.25 MeV γ from a 60Co source. After the irradiation test the detectors performances have been measured with X-rays and with a 3 GeV pion beam at CERN. A SEM analysis on several samples of the detectors has been performed to complete the understanding of the physical processes occurring in the GEM detector during the strong irradiation.
Keywords :
X-ray effects; ageing; electron multiplier detectors; gamma-ray effects; gas mixtures; position sensitive particle detectors; proportional counters; radioactive sources; 60Co source; CERN; CF4-based gas mixtures; ENEA-Casaccia; GEM detector; LHCb experiment; R&D activity; SEM analysis; X-rays; full size triple-GEM detectors; global irradiation test; high intensity gamma; pion beam; prototypes; Aging; Argon; Copper; Mesons; Performance evaluation; Prototypes; Size measurement; Testing; X-ray detection; X-ray detectors;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Print_ISBN :
0-7803-8700-7
DOI :
10.1109/NSSMIC.2004.1462669
