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-mum sensors for the outer part of the detector. We first present results on the performance of 500-mum-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-mum module, and the measured noise is in good agreement with expectations. The results obtained confirm the feasibility of large-area silicon trackers.
Performance of irradiated and nonirradiated 500-mu m-thick silicon microstrip detectors / M. Lenzi;L. Borrello;A. Buffini;S. Busoni;C. Civinini;R. D'Alessandro;R. Dell'Orso;S. Dutta;M. Meschini;A. Messineo;G. Segneri;A. Starodumov;G. Tonelli;P. G. Verdini. - In: IEEE TRANSACTIONS ON NUCLEAR SCIENCE. - ISSN 0018-9499. - ELETTRONICO. - 48:(2001), pp. 1016-1019. [10.1109/23.958716]
Performance of irradiated and nonirradiated 500-mu m-thick silicon microstrip detectors
D'ALESSANDRO, RAFFAELLO;
2001
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-mum sensors for the outer part of the detector. We first present results on the performance of 500-mum-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-mum module, and the measured noise is in good agreement with expectations. The results obtained confirm the feasibility of large-area silicon trackers.
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