Göttingen 2012 – scientific programme

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T: Fachverband Teilchenphysik

T 73: DAQ-Systeme

T 73.7: Talk

Wednesday, February 29, 2012, 18:15–18:30, VG 1.102

Fast serial data transmission for the DEPFET Belle II pixel detector — •Manuel Koch, Carlos Mariñas, Hans Krüger, and Norbert Wermes — Universität Bonn

A two layer vertex pixel detector, built based on the DEPFET technology, is the core component for the Belle II experiment at the super flavor factory SuperKEKB in Japan. The pixel detector produces an estimated total zero-supressed data rate of 256 Gbit/s, which is to be transmitted over 160 high speed links with an individual rate of 1.6 Gbit/s each. Challenges for the design of the serial links include a transmission distance exceeding 15 m, a radiation hard material selection, and high attenuation due to available material budget and space constraints. Modern transmission techniques including pre-emphasis and equalization are necessary to achieve a reliable data transmission; similarly are precise measurements and simulation model extractions needed for the characterization of all high-speed interconnect components. This talk summarizes the challenges, design efforts, and results of the DEPFET collaboration for the high-speed data transmission lines.