Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 72: Postersitzung Teilchenphysik

T 72.5: Poster

Tuesday, March 28, 2017, 16:45–19:00, F Foyer

Tests of final hardware revision of the Belle II PXD data reduction system — •Dennis Getzkow, Wolfgang Kühn, Sören Lange, Thomas Geßler, Klemens Lautenbach, and Simon Reiter — Justus-Liebig-Universität Gießen, II. Physikalisches Institut

The Belle II physics data taking is scheduled in October 2018, with a planned factor ≤ 40 higher luminosity as its predecessor, the Belle experiment. For the pixel detector (PXD) DEPleted Field Effect Transistors (DEPFET) are used, with ∼8×10⁶ pixels in total. As increased luminosity implies increased background, online filtering of incomning raw data of ∼20 GB/s is a crucial part of the PXD readout chain. The hardware platform is based upon ATCA (Advanced Telecommunications Architecture), Xilinx Virtex-5 FX70T FPGAs and high speed optical link technology (6.5 Gbps), and called ONline SElection Nodes (ONSEN). The reduction is based on calculated Regions-Of-Interest (ROIs), calculated by a high level trigger running on a PC farm. The full ONSEN system consists of 9 ATCA carrier boards with 33 daughter cards.

Tests procedures for final hardware will be presented.

This work was supported by the Bundesministerium für Bildung und Forschung under grant number 05H15RGKBA.