Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 70, Issue 3, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-010-1366-7
Keywords
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Categories
Funding
- ATLAS detector
- ANPCyT, Argentina
- Yerevan Physics Institute, Armenia
- ARC, Australia
- DEST, Australia
- Bundesministerium fur Wissenschaft und Forschung, Austria
- National Academy of Sciences of Azerbaijan
- State Committee on Science & Technologies of the Republic of Belarus
- CNPq, Brazil
- FINEP, Brazil
- NSERC, Canada
- NRC, Canada
- CFI, Canada
- CERN
- CONICYT, Chile
- NSFC, China
- COLCIENCIAS, Colombia
- Ministry of Education, Youth and Sports of the Czech Republic
- Ministry of Industry and Trade of the Czech Republic
- Committee for Collaboration of the Czech Republic
- Danish Natural Science Research Council
- Lundbeck Foundation
- European Commission, through the ARTEMIS Research Training Network
- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
- Georgian Academy of Sciences
- BMBF, Germany
- DFG, Germany
- HGF, Germany
- MPG, Germany
- Ministry of Education and Religion, through the EPEAEK program PYTHAGORAS II
- GSRT, Greece
- ISF, Israel
- MINERVA, Israel
- GIF, Israel
- DIP, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- Research Council of Norway
- Ministry of Science and Higher Education, Poland
- GRICES, Portugal
- FCT, Portugal
- Ministry of Education and Research, Romania
- Ministry of Education and Science of the Russian Federation
- State Atomic Energy Corporation ROSATOM
- JINR
- Ministry of Science, Serbia
- Department of International Science and Technology Cooperation
- Ministry of Education of the Slovak Republic
- Slovenian Research Agency, Slovenia
- Ministerio de Educacion y Ciencia, Spain
- Ministry of Higher Education, Science and Technology, Slovenia
- Swedish Research Council
- Knut and Alice Wallenberg Foundation, Sweden
- State Secretariat for Education and Science
- Swiss National Science Foundation
- Canton of Bern, Switzerland
- Canton of Geneva, Switzerland
- National Science Council, Taiwan
- TAEK, Turkey
- Science and Technology Facilities Council
- Leverhulme Trust, United Kingdom
- DOE, United States of America
- NSF, United States of America
- STFC [PP/E000347/1, PP/E006388/1, ST/H001034/1, ST/H001026/2, PP/E003699/1, ST/H001093/2, ST/H001077/1, PP/E003087/1, ST/H001069/1, ST/F007450/1, ST/F006454/1, PP/E003699/2, ST/F007337/1, ST/H000887/1, ST/H001026/1, ST/F011571/1, ST/H001166/1, ST/H001093/1, ST/I000186/1, ST/I006080/1, ST/G502320/1] Funding Source: UKRI
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The ATLAS Inner Detector is a composite tracking system consisting of silicon pixels, silicon strips and straw tubes in a 2 T magnetic field. Its installation was completed in August 2008 and the detector took part in data-taking with single LHC beams and cosmic rays. The initial detector operation, hardware commissioning and insitu calibrations are described. Tracking performance has been measured with 7.6 million cosmic-ray events, collected using a tracking trigger and reconstructed with modular pattern-recognition and fitting software. The intrinsic hit efficiency and tracking trigger efficiencies are close to 100%. Lorentz angle measurements for both electrons and holes, specific energy-loss calibration and transition radiation turn-on measurements have been performed. Different alignment techniques have been used to reconstruct the detector geometry. After the initial alignment, a transverse impact parameter resolution of 22.1 +/- 0.9 mu m and a relative momentum resolution sigma(p)/p = (4.83 +/- 0.16) x 10(-4) GeV-1 x p(T) have been measured for high momentum tracks.
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