Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 63: Instrumentation XIV

HK 63.6: Vortrag

Freitag, 31. März 2017, 15:15–15:30, F 072

Evaluation of the CBM FLES input interface at 2016 CERN/SPS beam test — •Dirk Hutter, Jan de Cuveland, and Volker Lindenstruth for the CBM collaboration — Frankfurt Institute for Advanced Studies, Goethe University, Frankfurt, Germany

The CBM First-level Event Selector (FLES) is the central event selection system of the upcoming CBM experiment at FAIR. Designed as a high-performance computing cluster, its task is an online analysis of the physics data at a total data rate exceeding 1 TByte/s. All physics data input to the cluster is handled by a custom input interface. It comprises a custom PCIe FPGA board receiving data via optical links and handling DMA transfers to the PC's memory, an accompanying HDL module implementing the front-end logic interface and link protocol in the front-ends and a software stack publishing data to the subsequent FLES data transport framework in a very efficient way.

Read-out chains for several CBM subsystems have been successfully implemented using prototype components of the input interface. A larger scale evaluation of the FLES input interface and data handling framework has been performed during the 2016 CBM beam test at CERN/SPS. Up to 14 input links from two different subsystems have been synchronously read and archived. The structure of the input interface and FLES datapath matched the foreseen final CBM setup. An overview of the read-out setup and beam test results on system performance will be presented.