Freiburg 2008 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 64: DAQ und Trigger II

T 64.2: Vortrag

Donnerstag, 6. März 2008, 17:05–17:20, KGI-HS 1108

Commissioning of the ATLAS Pixel Detector Trigger — •Iskander Ibragimov — Universität Siegen, Siegen, Deutschland

The Timing, Trigger and Control (TTC) system of the pixel detector receives Level 1 Accept trigger and control signals from the Central Trigger Processor (CTP) and distributes them to the 1744 detector modules. It is organised in 3 independent TTC partitions to allow for implementation of different triggering schemes for the pixel detector. Back to the CTP a BUSY signal from the data processing electronic is propagated to throttle the triggers. Since readout data are solely defined by a trigger propagation time, an adjustment of a trigger delay of individual modules is needed to compensate for differences in propagation.

Functionality tests of the TTC system are ongoing with simulated data instead of the real modules. Further dedicated runs with the CTP or combined runs with other ATLAS sub-detectors accompanying connection of the pixel detector are foreseen.

I present an overview of the pixel detector TTC system and trigger timing adjustment mechanisms and report on the current status of the commissioning process.