Heidelberg 1999 – scientific programme

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T: Teilchenphysik

T 702: Post-deadline session 2

T 702.2: Talk

Friday, March 19, 1999, 14:15–14:30, PY2

LEVEL–1 TRIGGER FADC TEST BEAM RESULTS — •K. Mahboubi and M. Wunsch — Institut für Hochenergiephysik, Schröderstraße 90, D-69120 Heidelberg

The ATLAS level–1 calorimeter trigger system receives analogue signals, summed over several cells of the electromagnetic and hadronic calorimeters separately, as trigger towers of coarser granularity. The analogue signals are digitized by Flash Analog to Digital Converter (FADC) at the LHC Bunch Crossing rate of 40 MHz. Special test beam version FADC boards have been installed and tested in the Liquid Argon Hadronic End Cap (HEC) module-0 test beam setup at CERN. The data obtained during various test beam periods has been analysed and some first results are presented.