July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Performance of Scintillation Counters with Silicon Photomultiplier Readout

Aug 2, 2017, 2:42 PM
IARC Building (Fermi National Accelerator Laboratory)

IARC Building

Fermi National Accelerator Laboratory

Presentation Particle Detectors Particle Detectors


Dr Ralf Ehrlich (University of Virginia)


The performance of scintillator counters with embedded wavelength-shifting fibers and read out using silicon photomultipliers (SiPMs) have been measured in the Fermilab Meson Test Beam Facility using 120 GeV protons. The counters were extruded with a titanium dioxide surface coating and two channels for the fibers at the Fermilab NICADD facility. The signals were amplified and digitized by a custom-made front-end electronics board. We report on the photoelectron yield from: (1) four different extrusion/coating mixtures; (2) extrusions with 5×2 cm2 and 6×2 cm2 profiles; (3) 1.0, 1.4 and 1.8 mm diameter fibers; (4) 2×2mm2 and 3×3 mm3 SiPMs; (5) transverse and longitudinal scans; (6) different reflectors at the counter far end; and (7) different SiPM biases. The position resolution obtained from timing differences from the SiPMs at both ends of the 3-m-long counters will also be presented. The counters are intended to be used in the cosmic-ray veto detector for the Mu2e experiment at Fermilab.

Primary author

Dr Ralf Ehrlich (University of Virginia)

Presentation materials