Bochum 2009 – wissenschaftliches Programm
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HK: Fachverband Hadronen und Kerne
HK 9: Accelerators and Instrumentation I
HK 9.7: Vortrag
Montag, 16. März 2009, 15:45–16:00, H-ZO 80
TrbNet - The Trigger and Readout Network for the HADES experiment — •Jan Michel1, Michael Böhmer3, Ingo Fröhlich1, Marek Palka4, Joachim Stroth1,2, Attilio Tarantola2, and Michael Traxler2 — 1Institut für Kernphysik, Goethe-Universität, Germany — 2GSI, Darmstadt, Germany — 3TU München, Germany — 4Jagiellonian University, Krakow, Poland
The HADES experiment is currently undergoing a rebuilt of the data readout system. Here, boards equipped with freely configurable FPGAs and high bandwidth data links have been designed. In this context, a new trigger distribution and data transportation protocol has been developed.
The main features are a fast and reliable data transport as well as a wide range of configuration options to adapt to the special needs of each subsystem. All boards will be accessible independently to allow for extensive controlling and monitoring features. Since the same network will be used for both trigger distribution and data transport, special care had to be taken to deliver trigger signals to the whole network within a few microseconds to keep the deadtime of the detector low.
In this contribution the concept and structure of the protocol is presented. Work supported by EU under the contracts CNI (515876) and the BMBF.