Bonn 2010 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 57: Instrumentierung XI

HK 57.2: Talk

Thursday, March 18, 2010, 17:00–17:15, HG VIII

Beam tests with first prototypes of the CBM Silicon Tracking System. — •Anton Lymanets — FIAS, University of Frankfurt, Germany

The CBM experiment will explore the QCD phase diagram at high net baryon densities and moderate temperatures. Its key component - the silicon tracking system STS - will reconstruct the trajectories of all charged particles created in collisions of heavy ions with a nuclear target, at typical beam energies of 25 GeV/nucleon. The fast readout required for CBM’s high interaction rates of up to 10 MHz will be based on self-triggering front-end electronics.

We constructed a beam telescope consisting of 3 stations with CBM microstrip test detectors. In each tracking station, the 2 × 256 orthogonal strips of 50 µm pitch are read out with 4 self-triggering n-XYTER front-end chips. The telescope was tested at GSI in a 2 GeV proton beam and provided tracking information to further CBM detector prototype systems (GEM and RICH) operated in the same experiment. Results from the in-beam test and complementary calibrations will be presented, including the performance of the self-triggering chip, its baseline stabilization, and signal-to noise measurements.

* Supported by EU-FP7 HadronPhysics2