Readout of a prototype CBM-STS silicon sensor module with STS-XYTERv2 ASIC

The Compressed Baryonic Matter (CBM) experiment is a stationary-target heavy-ion physics experiment under preparation at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. The physics goal, studies of nuclear matter at highest baryonic densities, requires the application of fast and radiation-hard detectors equipped with self-triggering read-out electronics. The Silicon Tracking System (STS) is the essential tracking detector of the CBM experiment and it possesses demanding requirements in term of channel density and read-out bandwidth.
The STS-XYTER ASIC is dedicated to the readout of the double-sided silicon micro-strip sensors and it provides self-triggered hit detection for 128 channels with 5-bit ADC charge and 14-bit timing information. A detector module comprising a 4x6 cm² sensor, microcables and the ASIC bonded into a prototype front-end board has been assembled. The chip has been integrated in the full read-out chain and the system performance evaluated in a test experiment on a proton beam line at COSY, Research Center Jülich, Germany. This contribution will present an overview of the detector readout, the experimental setup and some preliminary results.