7 research outputs found
Combined performance tests before installation of the ATLAS Semiconductor and Transition Radiation Tracking Detectors
The ATLAS (A Toroidal LHC ApparatuS) Inner Detector provides charged particle
tracking in the centre of the ATLAS experiment at the Large Hadron Collider (LHC). The Inner
Detector consists of three subdetectors: the Pixel Detector, the Semiconductor Tracker (SCT), and
the Transition Radiation Tracker (TRT). This paper summarizes the tests that were carried out at the
final stage of SCT+TRT integration prior to their installation in ATLAS. The combined operation
and performance of the SCT and TRT barrel and endcap detectors was investigated through a series
of noise tests, and by recording the tracks of cosmic rays. This was a crucial test of hardware and
software of the combined tracker detector systems. The results of noise and cross-talk tests on
the SCT and TRT in their final assembled configuration, using final readout and supply hardware
and software, are reported. The reconstruction and analysis of the recorded cosmic tracks allowed
testing of the offline analysis chain and verification of basic tracker performance parameters, such
as efficiency and spatial resolution, in combined operation before installation