Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 49: Detectors IV (Scintillators)
T 49.4: Vortrag
Mittwoch, 2. April 2025, 17:00–17:15, VG 1.101
On Calibration and Timing of the Mu3e Tile Detector — •Erik Steinkamp for the Mu3e collaboration — Kirchhoff-Institut für Physik, Heidelberg, Deutschland
The Mu3e experiment has been designed with the objective of detecting the charged lepton flavour violating decay µ → eee with a branching ratio sensitivity of 10−16, which represents the final goal for the second phase of the experiment. This would represent a four-order-of-magnitude improvement on the current limit. The primary challenge associated with the Mu3e detector is excellent background suppression. This necessitates, in addition to precise vertexing and tracking using monolithic pixel sensors, the acquisition of highly precise timing data.
The Mu3e tile detector is a scintillator-based timing detector with SiPM readout that aims at a timing resolution of less than 100 ps. In order to guarantee this level of performance, it is essential to conduct a precise calibration of the detector. This presentation will focus on the calibration process, which is primarily concerned with the configuration of the readout electronics, particularly the MuTRiG ASICs, which are responsible for SiPM readout and digitization. Furthermore, the time-walk effect, which is caused by the non-linear response of the scintillator material, in addition to the time synchronisation must be realized between the various channels within and between the ASICs. In order to evaluate the timing resolution of the detector, calibration and time walk correction methods are applied to test beam data taken at DESY. The resulting performance studies and the evaluation of the detector’s timing resolution will be presented.
Keywords: SiPM; Detectors; Validation; Semiconductor Detectors