München 2009 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 67: Detektorsysteme 3
T 67.5: Vortrag
Freitag, 13. März 2009, 15:10–15:25, A016
Cryogenic silicon detectors for COMPASS — •Stefanie Grabmüller1, Jan Michael Friedrich1, Bernhard Ketzer1, Igor Konorov1, Stephan Paul1, Fabrice Gautheron2, Etienne Burtin3, Nicole d’Hose3, Alain Magnon3, and Jean-Yves Roussé3 — 1TU München, Physik Department E18, 85748 Garching — 2Ruhr-Universität Bochum, 44780 Bochum — 3Irfu, CEA-Saclay, 91191 Gif-sur-Yvette, France
In the COMPASS experiment, double-sided silicon microstrip detectors perform high precision tracking in the beam telescope and, when required by the physics programme, also downstream of the target.
At very high particle fluxes, radiation damage deteriorates the performance of silicon detectors, particularly in the case of hadron beams. For the COMPASS physics programme with hadron beams, which started in 2008, a total integrated flux of 1013 particles per cm2 per year is reached. The lifetime of recently installed and new detectors will be extended significantly by cooling the silicon to a temperature of ca. -70∘C with liquid nitrogen.
The setup of cryogenic silicon detectors is presented, as well as recent achievements on the implementation.
This work is supported by BMBF, Maier-Leibnitz-Labor München and Cluster of Excellence Exc153.