Automatic Synchronization of Drift-Time Spectra and Maximum Drift-Time Measurement of an MDT

A method for the reliable automatic synchronization of the drift-time spectra of ATLAS monitored drift-tubes and for the determination of the maximum drift-time is presented. The Fermi function for the measurement of the maximum drift time has been adapted to the particular shape of the drift-time spectrum characteristic for Ar:CO$_2$(93:7) at 3~$bar$ which is used in the ATLAS muon chambers.