Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 35: Instrumentation
HK 35.8: Vortrag
Dienstag, 5. März 2013, 16:00–16:15, WIL-A221
Performance evaluation of a prototype module for the CBM Silicon Tracking System — •Tomas Balog — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — Comenius University, Bratislava, Slovakia
The building block of the CBM Silicon Tracking System is a detector module, a functional unit of one or several daisy-chained double-sided silicon microstrip sensors, read-out cables and front-end electronics. Ten modules will be located on a detector ladder. Several ladders build up a STS tracking station.
The performance of first prototype modules has been evaluated, resembling the structure of the intended STS module. The prototypes comprise a full-size CBM01 sensor and two 128-channel read-out cables 10, 20 and 30 cm long attached to the read-out pads on either side of the sensor. The cables end in connector boards interfacing to two front-end boards each hosting one n-XYTER chip. The whole setup was mounted into a copper box used as a shield. The hit reconstruction and track finding in the STS requires thresholds to be set at maximum value of 4 ke−.
The presentation discusses the noise determined for all three prototype modules and the signal-to-noise ratio obtained when testing the systems with a 241Am gamma source.
Supported by MC-PAD and HIC for FAIR.