Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Instrumentation

HK 34.7: Vortrag

Mittwoch, 21. März 2012, 18:30–18:45, P 2

SPADIC – Self triggered readout ASIC for the CBM transition radiation detectors — Tim Armbruster, Peter Fischer, •Michael Krieger, and Ivan Peric — ZITI, Universität Heidelberg

For the readout of the transition radiation detectors of the planned CBM experiment at FAIR, the self-triggered SPADIC mixed signal ASIC for signal amplification and digitization is under development.

The chip has 32 channels, each composed of a low-noise and low-power charge sensitive amplifier, a 9 bit pipelined ADC running at 25 MHz sampling rate, a programmable digital signal processing unit with 16 bit internal resolution for detector specific tasks such as ion tail cancellation and baseline correction, as well as hit detection logic, which triggers the readout of whole signal snapshots. Data will be sent out in a message-based format through an arbitrated inter-channel network preserving the temporal order of recorded events.

We will show lab and test beam measurements of the available SPADIC prototype chips and present the first version of a full scale chip.