Erlangen 2026 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 36: Instrumentation VII

HK 36.7: Vortrag

Donnerstag, 19. März 2026, 15:30–15:45, PHIL B 302

Development and performance of the readout board of the STS detector for the CBM experiment — •Patryk Semeniuk for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany — Goethe University Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany — AGH University of Krakow, Mickiewicza 30, 30-059 Kraków, Poland

The Silicon Tracking System (STS) of the CBM experiment requires a high-bandwidth readout chain operating under strict spatial and performance constraints. A new generation of STS Readout Boards (STS-ROB), developed as the successor to the CROB, forms the concentrator stage between the front-end electronics and the CRI-based backend. Each STS-ROB integrates three GBTx ASICs, a Versatile Link optical interface, and connectivity optimized for AC-coupled 320-Mb/s LVDS E-Links from front-end ASICs at different sensor bias potentials.

Recent work focused on commissioning and integration of the STS-ROB into the readout chain using the CBM Common Readout Interface (CRI) and the self-developed Readout-Powering Board (RPoB). Stable GBTx initialization, reliable optical and electrical communication, and robust power delivery were demonstrated, confirming that the STS-ROB meets the system’s operational requirements.

In the final detector, the STS will comprise several hundred STS-ROB units with dedicated addon and powering boards; the concept, integration results, and current status of the STS-ROB will be presented.

Keywords: CBM; STS; Readout electronics; STS-ROB; GBTx