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Detector Seminar
Operation of rad-tolerant silicon pixel detectors in NA60
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Europe/Zurich
13/2-005 (CERN)
Description
NA60 is a fixed target experiment at the CERN SPS designed to study the production of prompt dimuons and open charm in heavy-ion and proton-nucleus collisions. One of its key detectors is the silicon pixel telescope, which is operated in a 2.5~T magnetic field and measures the tracks of the charged particles originating from the collisions. It thereby significantly improves the dimuon mass resolution and allows us to tag decays of charmed mesons.
In 2003, NA60 took five weeks of indium-indium collisions, with a 16-plane telescope built with ALICE1LHCb pixel chips. The most exposed areas of the silicon detectors accumulated a total radiation dose of several 1013 1-MeV neutron equivalent per squared centimeter. For the 2004 run, with proton-nucleus collisions, two planes made of ATLAS pixel modules were added, to allow a higher interaction rate thanks to the faster readout clock (40~MHz).
The talk describes the NA60 pixel telescope and experiences with this first operation of LHC-type pixel detectors in a running experiment. Performance results concerning efficiency, vertexing, etc., will be shown, together with studies on the radiation damage effects.
Organiser(s): A. Cattai / PH Department
In 2003, NA60 took five weeks of indium-indium collisions, with a 16-plane telescope built with ALICE1LHCb pixel chips. The most exposed areas of the silicon detectors accumulated a total radiation dose of several 1013 1-MeV neutron equivalent per squared centimeter. For the 2004 run, with proton-nucleus collisions, two planes made of ATLAS pixel modules were added, to allow a higher interaction rate thanks to the faster readout clock (40~MHz).
The talk describes the NA60 pixel telescope and experiences with this first operation of LHC-type pixel detectors in a running experiment. Performance results concerning efficiency, vertexing, etc., will be shown, together with studies on the radiation damage effects.
Organiser(s): A. Cattai / PH Department