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HK: Fachverband Physik der Hadronen und Kerne

HK 44: Instrumentation XII

HK 44.1: Gruppenbericht

Mittwoch, 22. März 2023, 17:30–18:00, SCH/A251

Status of the CBM Silicon Tracking System — •Marcel Bajdel for the CBM collaboration — Goethe-Universität Frankfurt am Main — GSI Helmholtz Centre for Heavy Ion Research

The Compressed Baryonic Matter (CBM) is one of the core experiments at the future Facility for Anti-proton and Ion Research (FAIR), Darmstadt, Germany. The Silicon Tracking System (STS) is a central detector system of CBM, placed inside a 1 Tm magnet and with an operation temperature of about -10 ^∘C to keep low radiation-induced bulk current in the 300 µm double sided microstrip silicon sensors.

The STS comprises eight tracking stations with 876 modules. Each module is calibrated and tested in order to access its performance. Next steps involve mounting the module on a carbon ladder, and subsequently these objects are arranged horizontally on so-called C-frames.

The purpose of this contribution is to give an overview of the recent progress towards the STS detector. The first major milestone is the operation of the readout chain and detector control system of the miniaturized version of STS, which features 11 detector modules. The second accomplishment features the commissioning efforts of the thermal demonstrator which serves to validate the concept for crucial services of the STS (cooling, air drying, ambient conditions measurements). Lastly, the preproduction of the detector modules has started, and the first results collected.