Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 9: Accelerators and Instrumentation I

HK 9.6: Vortrag

Montag, 16. März 2009, 15:30–15:45, H-ZO 80

Upgrade of the HADES data acquisition system — •Marek Palka — Jagiellonian University, Cracow, Poland — Gesellschaft für Schwerionenforschung, Darmstadt, Germany

Next years HADES will be moved to the upcoming FAIR accelerator complex. Here, HADES-at-FAIR will continue its experimental program. Due to mentioned future plans, the detector undergoes an upgrade. In order to be able to take the data in the Au+Au collision system at 8 GeV/u with a sustained trigger rate of 20 kHz (in peak 100 kHz) and expected average amount of the data 300 MB/s, our trigger and readout system has to be improved. A major part of the new DAQ system is the general-purpose Trigger and Readout Board (TRB), which serves as a platform for all other subsystems. To broaden the spectrum of possible applications, in the future DAQ-systems, we added a very high data-rate digital interface connector to this board (15 Gbit/s). It gives the possibility to mount an add-on boards to the TRB. The add-on boards then provide the detector-specific interfaces (special connectors) or FEE (like ADCs) and additional computing resources (FPGAs). All required add-on modules for the HADES-at-FAIR upgrade have been built and their basic functionality has been tested. The major steps of the upgrade program will be shown in several parts : overview of the general DAQ concept, general readout platform, readout electronics for our detectors (add-ons), new event building concept, slow control, trigger distribution system and moreover also a part of the front-end electronics.