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HK: Fachverband Physik der Hadronen und Kerne

HK 64: Instrumentierung

HK 64.4: Talk

Friday, March 21, 2014, 14:45–15:00, HZ 9

Development of radiation tolerant microstrip sensors for the CBM Silicon Tracking System — •Minni Singla for the CBM collaboration — Goethe Universität Frankfurt

The Silicon Tracking System (STS) is the central detector system of the Compressed Baryonic Matter experiment (CBM) at FAIR investigating the phase diagram of strongly interacting matter in nucleus-nucleus collisions with collision rates up to 10 MHz. The extreme interaction rates require radiation tolerant detector components. An overview of the development of radiation tolerant STS microstrip prototype sensors will be presented including test results for irradiated sensors. For this purpose the prototype sensors had been irradiated at the TRIGA nuclear reactor of the University of Ljubljana. Besides the static measurements, the charge collection efficiency of these irradiated sensors was measured. Additionally a controlled thermal annealing of the sensors has been performed to extract the beneficial and reverse annealing time constants which will help to develop an operational scenario for the STS.
Supported by EU-FP7 HadronPhysics3, HIC for FAIR, HGS-HIRe and H-QM.