The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
Abstract
The design, construction, and commissioning of the ALICE Time-Projection Chamber (TPC) is described. It is the main device for pattern recognition, tracking, and identification of charged particles in the ALICE experiment at the CERN LHC. The TPC is cylindrical in shape with a volume close to 90 m^3 and is operated in a 0.5 T solenoidal magnetic field parallel to its axis. In this paper we describe in detail the design considerations for this detector for operation in the extreme multiplicity environment of central Pb--Pb collisions at LHC energy. The implementation of the resulting requirements into hardware (field cage, read-out chambers, electronics), infrastructure (gas and cooling system, laser-calibration system), and software led to many technical innovations which are described along with a presentation of all the major components of the detector, as currently realized. We also report on the performance achieved after completion of the first round of stand-alone calibration runs and demonstrate results close to those specified in the TPC Technical Design Report.
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Cite
@article{arxiv.1001.1950,
title = {The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events},
author = {J. Alme and Y. Andres and H. Appelshauser and S. Bablok and N. Bialas and R. Bolgen and U. Bonnes and R. Bramm and P. Braun-Munzinger and R. Campagnolo and P. Christiansen and A. Dobrin and C. Engster and D. Fehlker and P. Foka and U. Frankenfeld and J. J. Gaardhoje and C. Garabatos and P. Glassel and C. Gonzalez Gutierrez and P. Gros and H. -A. Gustafsson and H. Helstrup and M. Hoch and M. Ivanov and R. Janik and A. Junique and A. Kalweit and R. Keidel and S. Kniege and M. Kowalski and D. T. Larsen and Y. Lesenechal and P. Lenoir and N. Lindegaard and C. Lippmann and M. Mager and M. Mast and A. Matyja and M. Munkejord and L. Musa and B. S. Nielsen and V. Nikolic and H. Oeschler and E. K. Olsen and A. Oskarsson and L. Osterman and M. Pikna and A. Rehman and G. Renault and R. Renfordt and S. Rossegger and D. Rohrich and K. Roed and M. Richter and G. Rueshmann and A. Rybicki and H. Sann and H. -R. Schmidt and M. Siska and B. Sitar and C. Soegaard and H. -K. Soltveit and D. Soyk and J. Stachel and H. Stelzer and E. Stenlund and R. Stock and P. Strmen and I. Szarka and K. Ullaland and D. Vranic and R. Veenhof and J. Westergaard and J. Wiechula and B. Windelband},
journal= {arXiv preprint arXiv:1001.1950},
year = {2014}
}
Comments
55 pages, 82 figures