Aging Investigation of Cms Emu Prototype Chambers


The aging investigation results of CMS EMU prototype chambers are presented. Aging tests under sustained irradiation by a 90 Sr (2 Ci) were performed with three gas gain reduction was not observed up to the accumulated charge Q = 13.56 C/cm. However, the dark current in the chamber was noticeable starting already from Q = 2 C/cm. The absence of the CF 4 (in… (More)

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