Irradiation of the ATLAS SCT hybrid equipped with ABCD chips

Abstract

An ATLAS SCT hybrid equipped with 3 ABCD2T chips and 3 ABCD2NT chips has been irradiated with 24 GeV protons from the PS accelerator at CERN. Another hybrid has been irradiated with neutrons from the reactor in Ljubljana. After a total fluence of 3*10^14 p/cm2 at CERN and 2*10^14 n/cm2 from reactor the ABCD2T chips stay fully operational. Their parameters remain within specification and the increased offset spread can be corrected using TrimDacs