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HK: Fachverband Physik der Hadronen und Kerne
HK 26: Instrumentation und Anwendungen II
HK 26.1: Group Report
Tuesday, March 11, 2008, 11:00–11:30, 2D
The Transition Radiation Detector for ALICE at LHC — •Ken Oyama for the ALICE-TRD collaboration — Physikalisches Institut, Heidelberg
The Transition Radiation Detector (TRD) for the ALICE experiment at the Large Hadron Collider consists of 540 Xe gas-filled drift chambers with transition radiators arranged in 18 supermodules in barrel geometry in the central part of the ALICE detector. The large active area of roughly 750m2 is covered by almost 1.2 million readout channels. The TRD performs online tracking and electron identification in the challenging heavy-ion collisions environment within 6µ s after the interaction and thus requires excellent position resolution and pion rejection capability.
Two of the 18 TRD supermodules are installed in the ALICE central barrel. A third one was exposed in its final configuration to a beam of tagged electrons and pions at the CERN Proton Synchrotron at beam momenta from 1 to 6 GeV/c and will be installed in November 2007. Also, data from cosmic events with the ALICE detector will be taken in December 2007. We give an overview of the commissioning of the detector. We will present latest results from the detector performance. Finally, we report on the preparation for the first collisions in ALICE with the startup of LHC mid of 2008.