Radiation hardness tests of GaAs amplifiers operated in liquid argon in the ATLAS calorimeter

J. Ban,H. Brettel, A. Cheplakov,W. Cwienk,J. Fent,V. Golikov,S. Golubyh, K. Jakobs,V. Kukhtin,E. Kulagin,L. Kurchaninov, E. Ladygin,V. Luschikov, H. Oberlack,V. Obudovsky, P. Schacht,A. Shalyugin,U. Stiegler,T. Zweimüller

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2008）

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摘要

Highly integrated Gallium Arsenide (GaAs) chips of preamplifiers and summing amplifiers have been exposed to high fluence of fast neutrons and γ-dose at the IBR-2 reactor in Dubna. A stable performance of the electronics has been demonstrated up to a fluence of 5×1014ncm-2 and a γ-dose of 55kGy. The radiation hardness tests confirm the applicability of the preamplifiers for more than 10 years operation in the ATLAS hadronic end-cap calorimeter at LHC.

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关键词

LHC,Calorimeter,GaAs,Amplifier,Radiation damages

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