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HK: Fachverband Physik der Hadronen und Kerne
HK 19: Instrumentation und Anwendungen II
HK 19.3: Talk
Tuesday, March 11, 2008, 09:00–09:15, 2D
The ALICE Transition Radiator Detector Control System — •Kai Schweda for the ALICE-TRD collaboration — Physikalisches Institut, Heidelberg
The Transition Radiation Detector (TRD) for the ALICE experiment at the Large Hadron Collider at CERN will provide electron identification in the central barrel at momenta in excess of 1GeV/c as well as fast triggering (6µ s) capability. It consists of 540 gas detectors with an active area of roughly 750m2 and almost 1.2 million readout channels.
The TRD detector control system (DCS) back-end is fully implemented as a detector oriented hierarchy of objects behaving as finite state machines. PVSS II is used in the supervisory layer. Software communications to the hardware is realized by means of a distributed information management server running on an embedded Linux system pool with about 550 servers. TRD DCS controls and monitors 75k FEE chips, several hundred low and high voltage channels, gas and cooling.
We give an overview of the commissioning of the TRD detector control system and highlight the operation of 2 TRD supermodules during a continuous 2-weeks cosmic data run with the ALICE detector. Finally, we report on the preparation for the first collisions in ALICE with the startup of LHC mid of 2008.