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T: Fachverband Teilchenphysik
T 98: Experimentelle Methoden III
T 98.5: Talk
Thursday, March 3, 2016, 17:55–18:10, VMP8 SR 105
Track Based Alignment of the Mu3e Detector — •Ulrich Hartenstein — Institut für Kernphysik, Universität Mainz
The Mu3e emperiment searches for the lepton flavor violating decay µ+ → e+ e− e+ with a sensitivity goal for the branching fraction of better than 10−16. This process is heavily supressed in the standard model of particle physics (BR < 10−50) which makes an observation of this decay a clear indication of new physics.
For track reconstruction, four barrel shaped layers consisting of about 3000 high-voltage monolithic active pixel sensors (HV-MAPS) are used. The position, orientation and possible deformations of these sensors must be known to greater precision than the assembly tolerances. A track based alignment via the General Broken Lines fit and the Millepede-II algorithm will be used to achieve this precision in the final detector.
The talk will discuss a study of the required alignment precision and preparations for aligning the detector using a detailed simulation.