Operation and performance of the ATLAS semiconductor tracker

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, M. Abolins, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Stefania Xella, Peter Henrik Hansen, Morten Dam Jørgensen, Troels Christian Petersen, Lotte Ansgaard Thomsen, Alejandro Alonso Diaz, Gorm Aske Gram Krohn Galster, Sascha Mehlhase, Almut Maria PingelAsk Emil Løvschall-Jensen, James William Monk, Lars Egholm Pedersen, Graig Wiglesworth

15 Citationer (Scopus)

Abstract

The semiconductor tracker is a silicon microstrip detector forming part of the inner tracking system of the ATLAS experiment at the LHC. The operation and performance of the semiconductor tracker during the first years of LHC running are described. More than 99% of the detector modules were operational during this period, with an average intrinsic hit efficiency of (99.74±0.04)%. The evolution of the noise occupancy is discussed, and measurements of the Lorentz angle, d-ray production and energy loss presented. The alignment of the detector is found to be stable at the few-micron level over long periods of time. Radiation damage measurements, which include the evolution of detector leakage currents, are found to be consistent with predictions and are used in the verification of radiation background simulations.

OriginalsprogEngelsk
ArtikelnummerP08009
TidsskriftJournal of Instrumentation
Vol/bind9
Antal sider80
ISSN1748-0221
StatusUdgivet - 29 apr. 2014

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