Performance of Wavelength-Shifting Fibers for the Mu2e Cosmic Ray Veto Detector

Abstract

The cosmic-ray-veto detector (CRV) for the Mu2e experiment consists of four layers of plastic scintillating counters read out by silicon photo-multipliers (SiPM) through wavelength-shifting fibers. This paper reports the light properties of several wavelength-shifting fiber samples with diameters of 1.0 mm, 1.4 mm, and 1.8 mm that were considered for the CRV system. A fiber diameter of 1.4 mm was selected as optimal for the CRV, and measurements of the prototype and production fiber of this diameter are presented. Fiber performance was found to exceed the CRV requirements for >99% of the spools. The measurements are performed using a scanner designed to ensure the fiber quality for the CRV.

arXiv commentTo be submitted to the Journal of Instrumentation (JINST). arXiv admin note: text overlap with arXiv:1511.06225

References in corpus (4)

• Charged Lepton Flavor Violation: An Experimenter's Guide
• Mu2e Technical Design Report
• Expression of Interest for Evolution of the Mu2e Experiment
• Performance of Wavelength-Shifting Fibers for the Mu2e Cosmic Ray Veto Detector

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