Abstract

We report the results of several radiation tests on preproduction samples of the anode front-end boards for the CMS endcap muon system. The crucial components tested were the 16-channel amplifier-shaper-discriminator ASIC (CMP16) and the voltage regulator TK112B. The boards were exposed to doses up to 80 kRad in a 63 MeV proton beam, and to a neutron fluence up to 2x10 n/cm from a nuclear reactor. The static and dynamic characteristics were measured versus the radiation dose. The boards were found operational up to a total ionizing dose (TID) of 60 kRad.

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