Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Poster (a)

HK 51.37: Poster

Thursday, April 2, 2020, 16:30–18:30, Zelt

Evaluation and test of the CBM-TRD readout-ASIC at the DESY testbeam facility. — •Dennis Spicker for the CBM collaboration — Institut für Kernphysik Frankfurt, Goethe-Uni-Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt

At the future Facility for Antiproton and Ion Research (FAIR) the Compressed Baryonic Matter experiment (CBM) is supposed to measure particles from heavy-ion collisions at very high interaction rates. For this purpose, the data acquisition will run in a free-streaming mode without an hierarchical trigger system. For the Transition Radiation Detector (TRD), which will provide tracking and particle identification information, the readout system is based on the Self-triggered Pulse Amplification and Digitization ASIC (SPADIC). It features a charge-sensitive Amplifier, a continuously sampling ADC, a programmable digital filter and a hit detection logic. The latest version is SPADIC 2.2, which was submitted in early 2019. It introduces new switchable features such as a low-gain mode, an additional shaping order and digital baseline tracking.

In August 2019, test measurements were performed at the Deutsches Elektronen-Synchrotron (DESY) with two TRD readout-chambers, equipped with SPADIC 2.2 ASICs, mounted on prototype single-chip front-end boards. In an electron beam with a momentum of 1 to 4 GeV/c, among other measurements also the new features of the SPADIC have been tested and results will be presented in this contribution. Supported by the German BMBF-grants 05P15RFFC1 and 05P19RFFC1.