The ALICE experiment at the CERN LHC

ALICE (A Large Ion Collider Experiment) is a general-purpose, heavy-ion detector at the CERN LHC which focuses on QCD, the strong-interaction sector of the Standard Model. It is designed to address the physics of strongly interacting matter and the quark-gluon plasma at extreme values of energy dens...

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Veröffentlicht in:	Journal of instrumentation 2008, Vol.3 (8), p.S08002-S08002
Hauptverfasser:	Anzo, A, Antinori, F, Aprodu, V, Arefiev, A, Asryan, A, Badalà, A, Batigne, G, Becker, B, Benato, A, Bernard, C, Berst, J D, Bertelsen, H, Bhasin, A, Baskar, P, Bhati, A, Blanco, F, Blyth, S, Braun, M, Bruna, E, Cleymans, J, Costa, F, Groot, J de, Dinca, C, Efimov, L, Engster, C, Fedorov, O, Fragiacomo, E, Girard, M Fusco, Gagliardi, M, Lopez, A Garcia, Giolu, G, Gutierrez, C Gonzalez, Gregory, C, Grosso, R, Guarnaccia, C, Gulbrandsen, K, Gustafsson, H-A, Helstrup, H, Herghelegiu, A, Ianigro, J C, Jung, H, Kadija, K, Kaplin, V, Kliemant, M, Koshurnikov, E, Kotov, I, Kox, S, Kramer, F, Kurepin, A N, Kweon, M, Labbé, J-C, Laurenti, G, Li, Q, Lo, J, Lobanov, V, Mahajan, A, Malkiewicz, T, Marchini, S, Maslov, N I, Mastroserio, A, Michinelli, R, Miśkowiec, D, Morsch, A, Pastirčák, B, Pepato, A, Pereira, H, Pikna, M, Plumeri, S, Podesta, P, Renault, G, Riso, J, Rivetti, A, Rizzi, M, Sedykh, S, Sesselmann, T, Sharkov, E, Sharma, S, Shigaki, K, Shurygina, M, Siddi, E, Simon, R, Skaali, B, Soloviev, A, Soos, C, Stutzmann, J S, Tauro, A, Tsilis, E, Tuveri, M, Urbán, J, Brink, A Van Den, Vannucci, L, Vanuxem, J-P, Vascotto, A, Venaruzzo, M, Vranic, D, Wabnitz, C, Wheadon, R, Xu, C, Zalite, A, Zeter, V
Format:	Artikel
Sprache:	eng
Schlagworte:	Accelerator Physics and Instrumentation Acceleratorfysik och instrumentering alignment and calibration methods Analysis and statistical and IR photons and light emission processes calibration and fitting methods Calorimeters Cherenkov and Cherenkov detectors cluster finding Computing Data processing methods Data reduction methods dE/dx detectors Detector Detector cooling and Detector design and construction technologies and Detector grounding detectors detectors for UV Fysik Gamma detectors Gaseous detectors High Energy Physics - Experiment Instrumentation for Instrumentation for heavy-ion accelerators Large detector Liquid detectors Manufacturing materials methods Natural Sciences Naturvetenskap Overall mechanics design particle accelerators and storage rings - high energy Particle identification Particle tracking detectors Pattern recognition Photon Photon detectors for UV Physical Sciences Physics scintillation Scintillators Simulation methods and programs Software architectures Solid state detectors Special cables Spectrometers systems for particle and astroparticle physics thermo-stabilization Time projection chambers Timing transition radiation Transition radiation detectors visible visible and IR photons Voltage distributions
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Beschreibung
Zusammenfassung:	ALICE (A Large Ion Collider Experiment) is a general-purpose, heavy-ion detector at the CERN LHC which focuses on QCD, the strong-interaction sector of the Standard Model. It is designed to address the physics of strongly interacting matter and the quark-gluon plasma at extreme values of energy density and temperature in nucleus-nucleus collisions. Besides running with Pb ions, the physics programme includes collisions with lighter ions, lower energy running and dedicated proton-nucleus runs. ALICE will also take data with proton beams at the top LHC energy to collect reference data for the heavy-ion programme and to address several QCD topics for which ALICE is complementary to the other LHC detectors. The ALICE detector has been built by a collaboration including currently over 1000 physicists and engineers from 105 Institutes in 30 countries. Its overall dimensions are 161626 m3 with a total weight of approximately 10 000 t. The experiment consists of 18 different detector systems each with its own specific technology choice and design constraints, driven both by the physics requirements and the experimental conditions expected at LHC. The most stringent design constraint is to cope with the extreme particle multiplicity anticipated in central Pb-Pb collisions. The different subsystems were optimized to provide high-momentum resolution as well as excellent Particle Identification (PID) over a broad range in momentum, up to the highest multiplicities predicted for LHC. This will allow for comprehensive studies of hadrons, electrons, muons, and photons produced in the collision of heavy nuclei. Most detector systems are scheduled to be installed and ready for data taking by mid-2008 when the LHC is scheduled to start operation, with the exception of parts of the Photon Spectrometer (PHOS), Transition Radiation Detector (TRD) and Electro Magnetic Calorimeter (EMCal). These detectors will be completed for the high-luminosity ion run expected in 2010. This paper describes in detail the detector components as installed for the first data taking in the summer of 2008.
ISSN:	1748-0221 1748-0221
DOI:	10.1088/1748-0221/3/08/S08002