The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events - Physics > Instrumentation and DetectorsReport as inadecuate




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Abstract: The design, construction, and commissioning of the ALICE Time-ProjectionChamber TPC is described. It is the main device for pattern recognition,tracking, and identification of charged particles in the ALICE experiment atthe CERN LHC. The TPC is cylindrical in shape with a volume close to 90 m^3 andis operated in a 0.5 T solenoidal magnetic field parallel to its axis.In this paper we describe in detail the design considerations for thisdetector for operation in the extreme multiplicity environment of centralPb-Pb collisions at LHC energy. The implementation of the resultingrequirements into hardware field cage, read-out chambers, electronics,infrastructure gas and cooling system, laser-calibration system, and softwareled to many technical innovations which are described along with a presentationof all the major components of the detector, as currently realized. We alsoreport on the performance achieved after completion of the first round ofstand-alone calibration runs and demonstrate results close to those specifiedin the TPC Technical Design Report.



Author: J. Alme, Y. Andres, H. Appelshauser, S. Bablok, N. Bialas, R. Bolgen, U. Bonnes, R. Bramm, P. Braun-Munzinger, R. Campagnolo, P.

Source: https://arxiv.org/







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