Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 21: Instrumentierung

HK 21.3: Vortrag

Dienstag, 18. März 2014, 14:45–15:00, HZ 8

The PASTA Chip - A Free-Running Readout ASIC for Silicon Strip Sensors in PANDA — •André Goerres1, Tobias Stockmanns1, James Ritman1, and Angelo Rivetti2 for the PANDA collaboration — 1Institut für Kernphysik, Forschungszentrum Jülich, Jülich, Germany — 2INFN Sezione di Torino, Torino, Italy

The PANDA experiment is a multi purpose detector, investigating hadron physics in the charm quark mass regime. It is one of the main experiments at the future FAIR accelerator facility, using pp annihilations from a 1.5-15 GeV/c anti-proton beam. Because of the broad physics spectrum and the similarity of event and background signals, PANDA does not rely on a hardware-level trigger decision.

The innermost of PANDA’s sub-systems is the Micro Vertex Detector (MVD), consisting of silicon pixel and strip sensors. The latter will be read out by a specialized, free-running readout front-end called PANDA Strip ASIC (PASTA).

It has to face a high event rate of up to 40 kHz/ch in an radiation-intense environment. To fulfill the MVD’s requirements, it has to give accurate timing information to incoming events (<10 ns) and determine the collected charge with an 8-bit precision. The design has to meet cooling and placing restrictions, leading to a very low power consumption (<4 mW/ch) and limited dimensions. Therefore, a simple, time-based readout approach is chosen.

In this talk, the conceptual design of the front-end will be presented.

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