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The front-end electronics (signal amplification and summation) of the ATLAS Hadronic End-cap Calorimeter (HEC) is operated at the circumference of the HEC calorimeter wheels inside the cryostats in liquid argon (LAr). The present electronics is designed to operate at irradiation levels expected for the LHC. For operation at the sLHC the irradiation levels are expected to be a factor ten higher, therefore...
In this contribution we present a readout electronics for a liquid-argon calorimeter. It has been designed and optimized for operation at cryogenic temperatures and it is integrated in an n-well 2??m CMOS technology. The chip contains 16 analog channels with switched-capacitors circuits for charge collection, storage, and amplification, averaging and correlated double sampling circuits for noise reduction,...
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