Mainz 2022 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 59: Instrumentation XV

HK 59.2: Vortrag

Donnerstag, 31. März 2022, 14:30–14:45, HK-H4

Quality control and position mapping of the silicon microstrip sensors for the CBM-STS detector — •Olga Bertini for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

The central detector of the CBM experiment at FAIR, the Silicon Tracking System (STS), is designed to reconstruct up to thousand charged particle tracks produced at SIS100 in heavy-ion interactions at rates of up to 10 MHz.

The eight tracking stations of the STS, operating in the aperture of a super conducting dipole magnet with 1 T field, will cover the polar angles between 2.5^∘ and 25^∘. The stations with a total sensor area of 4.2 m² will comprise about 900 detector modules consisting of double-sided silicon microstrip sensors, ultra-thin readout cables and front-end electronics that are mounted onto lightweight carbon fiber support strictures. More than 1000 double-sided sensor were produced and delivered to GSI, where their quality was controlled optically and electrically.

A summary of the tests carried out and the quality achieved will be given. The mapping of the sensors to the positions in the detector matching the quality grades and required radiation tolerance will be shown.