Dortmund 2021 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 19: Detector systems I
T 19.3: Vortrag
Montag, 15. März 2021, 16:35–16:50, Ts
A camera alignment system for the Mu3e experiment — •Goran Stanic for the Mu3e collaboration — Johannes Gutenberg University Mainz
The Mu3e experiment is going to be conducted at PSI in Switzerland and it aims at finding or excluding the lepton flavour violating decay µ → eee at branching fractions above 10−16. The Mu3e detector consists of a tracking detector built from thin high-voltage monolithic active pixel sensors (HV-MAPS) complemented by scintillating fibers and tiles for precise timing measurement. One of the main challenges of the experiment lies in precise alignment of detector elements. In order to achieve the best possible momentum resolution a track based alignment programme will be utilised. Track-based alignment can however not resolve so-called weak modes, deformations of the detector that produce tracks of equal quality. The aim of this work is to correct for the weak modes by designing and developing a high precision camera based alignment system that monitors the detector position from the outside. The system will consist of multiple infrared cameras which will observe each other and the detector set-up. The main goal is to drive the camera measurement precision to be comparable to the size of the individual tracking detector pixels, which is at 80µ m.