Wuppertal 2015 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 62: Trigger 1

T 62.8: Vortrag

Mittwoch, 11. März 2015, 18:30–18:45, G.10.06 (HS 6)

Installation of the pocket ONSEN sytsem to the Belle II DAQ-testbench at KEK High Energy Accelerator Research Organization — •Klemens Lautenbach, David Münchow, Thomas Geßler, Wolfgang Kühn, Jens Sören Lange, and Björn Spruck for the Belle II collaboration — Universität Gießen

The future Belle II experiment will reach a total luminosity of 8· 10³⁵cm⁻²s⁻¹. With such high luminosities, the innermost detector, the Pixeldetector (PXD), will produce raw data rates of up to 20 GB/s. In order to reduce these rates, a high bandwidth data aquisition and data reduction system for the PXD is required. The so-called ONline SElection Node (ONSEN)-system will consist of 32 ATCA based Compute Nodes (CN) with Xilinx Virtex-5 FPGA’s. These will perform a Region Of Interest (ROI) selection based upon online track extrapolation from the outer detectors. A reduction factor >10 is planned. We present performance results of a first test with a ”pocket-ONSEN” system, which represents a prototype system containing three CN (a ROI merger, a ROI processor and a data outsender) assembled in one µ TCA-shelf and was implemented as a testbench at KEK, Japan.This work was supported by the German Bundesministerium fur Bildung und Forschung under grant number 05H12RG8.