Speaker
Ewa Stanecka
(Henryk Niewodniczanski Institute of Nuclear Physics PAN)
Description
The Semiconductor Tracker(SCT) of the ATLAS detector enters the last
phase of installation and commissioning at CERN. Prior to inserting into
ATLAS, the barrel part of the SCT has been integrated with the Transition
Radiation Tracker (TRT) barrel and tested with cosmic rays. A sector of 468
SCT modules has been powered and read simultaneously with TRT modules
in physics mode. In total 500 thousand events were recorded during cosmic
runs and processed with the ATLAS off-line reconstruction software. The SCT
performance was measured in terms of the average noise occupancy per
channel (4.5 ∗ 10 −5), the overall efficiency (> 99%). The tests with cosmic
rays proved full functionality of the complex Detector Control System(DCS)
which provides control, monitoring and safety functions for the detector
electronics. The results of SCT barrel tests with cosmic rays will be presented
as well as operational experience of running the fully integrated silicon
detector during the commissioning of the completed SCT.
Author
Ewa Stanecka
(Henryk Niewodniczanski Institute of Nuclear Physics PAN)
