Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: tracker properties
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.
- Research Organization:
- Indiana Univ., Bloomington, IN (United States); Harvard Univ., Cambridge, MA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The ATLAS Collaboration
- Grant/Contract Number:
- SC0010120; AC02-76SF00515; SC0007881; AC02-05CH11231
- OSTI ID:
- 1595580
- Alternate ID(s):
- OSTI ID: 1389277; OSTI ID: 1525213; OSTI ID: 1772588
- Journal Information:
- Journal of Instrumentation, Vol. 12, Issue 05; ISSN 1748-0221
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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