Darmstadt 2016 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Instrumentation II

HK 8.4: Talk

Monday, March 14, 2016, 15:00–15:15, S1/01 A3

Offline Event-Building based on Free-Streaming CBM-TRD Prototype DAQ Systems in 2015 CERN-SPS Beamtest Data — •Philipp Kähler for the CBM collaboration — Institut für Kernphysik, WWU Münster, Deutschland

The detectors of the Compressed Baryonic Matter (CBM) experiment at FAIR will be operated with unprecedented particle rates of up to 100kHz/cm². Transition Radiation Detector (TRD) prototypes have been tested at particle rates of several kHz in Novemver 2015 at the CERN-SPS under the use of a lead target in a 30 AGev lead ion beam. The rate capabilities of the currently developed Self-triggered Pulse Amplification and Digitization ASIC (SPADIC) have been investigated in this beamtest. The SPADIC boards of two TRD prototypes were operated in a time-synchronised mode. This talk will focus on the time-based offline event building. Especially first time-correlation studies between two aligned detectors will be shown.

Furthermore the high voltage currents of the chamber anode wires have been monitored with a high frequency. First steps of a high voltage analysis and implications to the chamber design with respect to the field geometry will be discussed.