Münster 2017 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 70: Myondetektoren
T 70.2: Vortrag
Dienstag, 28. März 2017, 17:05–17:20, VSH 06
PoSSuMuS - Position Sensitive Scintillating Muon Detector with SiPM Readout — •Ralph Müller1, Otmar Biebel1, Ralf Hertenberger1, Bernhard Flierl1, Maximilian Herrmann1, Philipp Lösel1, Chrysostomos Valderanis1, Isabel Frank1, Felix Klitzner1, Andre Zibell2, Thorben Swirski2, and Jonathan Bortfeldt3 — 1LMU München — 2JMU Würzburg — 3CERN
A modularized plastic scintillating detector consisting of two optically
separated trapezoids is investigated for two dimensional spatial reso-
lution with trigger capability with 160 GeV Muons.
Scintillation light is collected by wavelength shifting
fibers (WLSFs) and guided to Silicon Photo-Multiplieres (SiPMs).
The position resolution in one direction is achieved by comparing the light yield
of the two detector halves which is proportional to the path
length of the muon in the trapezoid. The second coordinate is calculated by the propagation
time of light from the point of creation to the SiPMs on both sides
of the module.
Since the spatial resolution depends on the amount of scintillation light
detected by the SiPMs, a new trapezoidal shape and an increased fiber
diameter was used, compared to former prototypes. Those optimization’s
lead to a factor three increased light yield and spatial resolution better than 1 cm.
We report on optimization of light-output and the spatial resolution of the detector,
as well as its dependence on the length of the scintillator, which was studied using
10 cm and 30 cm long trapezoids.