Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Instrumentation

HK 34.4: Vortrag

Mittwoch, 21. März 2012, 17:45–18:00, P 2

A Common Read-Out Receiver Card for ALICE DAQ and HLT — •Heiko Engel and Udo Kebschull — IRI, Goethe-Universität Frankfurt

In the ALICE read-out chain, both Data Acquisition (DAQ) and High Level Trigger (HLT) use FPGA-based Read-Out Receiver Cards (RORCs) as interface between the optical Detector Data Link (DDL) and the DAQ and HLT cluster machines. A new version of these cards is currently being developed as a common project of both groups. This new RORC will have a fast PCIe interface, high density parallel optical DDL connections and will combine several of the old cards into one new device. Due to the increased link density and the changed interface to the host machine a completely new read-out architecture has to be connected to the existing software framework. This work includes a custom linux device driver, a scatter-gather based DMA firmware and a software library to interface the new hardware to the existing software framework. All layers can be verified with a custom hardware/software co-simulation environment.