Speaker
Rosy Nikolaidou
(DAPNIA)
Description
The Muon Spectrometer of the ATLAS experiment is made of a large toroidal
magnet, arrays of high-pressure drift tubes for precise tracking and dedicated
fast detectors for the first-level trigger. All the detectors in the barrel toroid
have been installed and commissioning has started with cosmic rays. These
detectors are arranged in three concentric rings and the total area is about
7000 square meters. During the installation and commissioning of the
detectors, data are usually taken with the magnet off, but a dedicated run took
place with the magnetic field of the barrel toroid turned on.
We present the procedure to control the response of the single detectors
installed in the barrel toroid, Monitored Drift Tubes and Resistive Plate
Chambers, and results of the first tests done with cosmic rays triggered by the
first-level processor and read-out trough the ATLAS data acquisition. A
comparison of the detector performance in magnetic field on and off will be
presented together with a measurement of the cosmic ray flux in the
underground experimental area.
Details on the installation and commissioning schedule will be given in view of
the completion of the instrumentation of the muon spectrometer for the first
period of data taking with proton-proton collisions.
| Submitted on behalf of Collaboration (ex, BaBar, ATLAS) | Atlas muon group |
|---|
Author
Rosy Nikolaidou
(DAPNIA)
