Leipzig 2002 – wissenschaftliches Programm
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T: Teilchenphysik
T 408: Spurkammern IV
T 408.6: Vortrag
Donnerstag, 21. März 2002, 15:15–15:30, SR 1039/40
Test of ATLAS MDT Chambers in a Muon Beam at CERN — •Sandra Horvat1, Hubert Kroha1, Andreas Manz1, Robert Richter1, Oliver Kortner2, and Felix Rauscher2 — 1Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München — 2Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München
The Monitored Drift Tube (MDT) chambers for the ATLAS Muon Spectrometer consist of six or eight layers of precision drift tubes filled with Ar:CO 2 (93:7) gas mixture at a pressure of 3 bar. In order to achieve the required muon tracking precision of 40 µ m per chamber, a single tube position resolution of better than 80 µ m is needed. The performance of one of the chambers produced at the Max-Planck-Institut für Physik in Munich was studied in the muon testbeam at CERN. Muon track reconstruction in the six tube layers provides information about the single-tube resolution. The data are compared to the results obtained in the CERN muon beam in 1999 with a prototype MDT chamber of the same type using the same operating parameters.