Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: Tracker properties
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The tracking performance parameters of the ATLAS Transition Radiation Tracker (TRT) as part of the ATLAS inner detector are described in this paper for different data-taking conditions in proton-proton, proton-lead and lead-lead collisions at the Large Hadron Collider (LHC). The performance is studied using data collected during the first period of LHC operation (Run 1) and is compared with Monte Carlo simulations. The performance of the TRT, operating with two different gas mixtures (xenon-based and argon-based) and its dependence on the TRT occupancy is presented. These studies show that the tracking performance of the TRT is similar for the two gas mixtures and that a significant contribution to the particle momentum resolution is made by the TRT up to high particle densities.
CitationAaboud M, Aad G, Abbott B, Abdallah J, Abdinov OBo, Abeloos B, Abidi SH, AbouZeid H, Abraham NL, Abramowicz H, Buanes T, Dale Ø, Eigen G, Liebig W, Lipniacka A, Martin dit Latour B, Mæland S, Smestad L, Stugu B, Yang Z, Zalieckas J, Cameron DG, Catmore JR, Feigl S, Franconi L, Garonne V, Gjelsten BK, Gramstad E, Morisbak V, Nilsen JK, Ould-Saada F, Raddum SH, Read AL, Røhne OM, Sandaker H, Serfon C, Stapnes S, Strandlie A, Bugge MK, Abreu H, Abreu RF, Abulaiti Y, Acharya BS, Adachi S, Adamczyk L, Adams D, Adelman J, Adersberger M, Adye T, Affolder AA, ATLAS C. Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: Tracker properties. Journal of Instrumentation. 2017;12:P05002
Copyright CERN 2017 for the benefit of the ATLAS collaboration