Author :
Lenzi, M. ; Borrello, L. ; Buffini, A. ; Busoni, S. ; Civinini, C. ; D´Alessandro, R. ; Dell´Orso, R. ; Dutta, S. ; Meschini, M. ; Messineo, A. ; Segneri, G. ; Starodumov, A. ; Tonelli, G. ; Verdini, P.G.
Abstract :
The decision taken by the CMS experiment to build a tracker entirely based on silicon detectors has made necessary the use of thicker sensors instead of the usual 300-/spl mu/m sensors for the outer part of the detector. We first present results on the performance of 500-/spl mu/m-thick detectors, before and after neutron irradiation, bonded to the CMS tracker front-end electronics. Laboratory measurements show that the total collected charge scales linearly with thickness when compared with a 300-/spl mu/m module, and the measured noise is in good agreement with expectations. The results obtained confirm the feasibility of large-area silicon trackers.
Keywords :
neutron effects; silicon radiation detectors; 500 mum; CMS experiment; CMS tracker front-end electronics; Si; neutron irradiation; silicon microstrip detectors; Bonding; Charge measurement; Collision mitigation; Current measurement; Detectors; Laboratories; Neutrons; Noise measurement; Silicon; Thickness measurement;
