Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 14: Instrumentierung III

HK 14.6: Vortrag

Montag, 21. März 2011, 17:45–18:00, HS2

FPGA-based Online Trigger Algorithm Development for HADES — •Ming Liu, Thomas Geßler, Andreas Kopp, Wolfgang Kühn, Jens Sören Lange, Yutie Liang, David Münchow, Björn Spruck, and Qiang Wang — II. Physikalisches Institut, Justus-Liebig-Universität Giessen, Germany

Based on the ATCA compatible Compute Node (CN), investigation and development work has been conducted for the HADES online trigger algorithms on FPGAs. Specifically the inner MDC track reconstruction and the RICH ring recognition are respectively implemented into hardware processing engines, named Tracking Processing Unit (TPU) and Ring Recognition Unit (RRU). The TPU module searches for particle penetration points on a projection plane and reconstructs inner track segments from the target to those points; The RRU module identifies Cherenkov ring patterns generated by dilepton pairs, and correlates to the tracking result by receiving particle tracks which help to specify potential ring centers. Both modules will be integrated in the system design for online detector data processing. Implementation results reveal the feasibility to realize the complex algorithms on the FPGA. Preliminary tests have been done to estimate the system performance.

This work was supported in part by BMBF under contract Nos. 06GI9107I and 06GI9108I, FZ-Juelich under contract No. COSY-099 41821475, HIC for FAIR, and WTZ: CHN 06/20.