Measurement of Proton Quenching in a Plastic Scintillator Detector
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2020-11-22
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The non-linear energy response of the plastic scintillator EJ-260 is measured with the MicroCHANDLER detector, using neutron beams of energy 5 to 27 MeV at the Triangle Universities Nuclear Laboratory. The first and second order Birks' constants are extracted from the data, and found to be $k_B = (8.70 \pm 0.93)\times 10^{-3}\ {\rm g/cm^2/MeV}$ and $k_C = (1.42 \pm 1.00) \times 10^{-5}\ {\rm (g/cm^2/MeV)^2}$. This result covers a unique energy range that is of direct relevance for fast neutron backgrounds in reactor inverse beta decay detectors. These measurements will improve the energy non-linearity modeling of plastic scintillator detectors. In particular, the updated energy response model will lead to an improvement of fast neutron modeling for detectors based on the CHANDLER reactor neutrino detector technology.
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Awe, Connor, Phillip Barbeau, Alireza Haghighat, Sam Hedges, Tyler Johnson, Shengchao Li, Jonathan M Link, Valerio Mascolino, et al. (2020). Measurement of Proton Quenching in a Plastic Scintillator Detector. Journal of Instrumentation, 16(2). pp. P02035–P02035. 10.1088/1748-0221/16/02/P02035 Retrieved from https://hdl.handle.net/10161/23996.
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Phillip S. Barbeau
Professor Barbeau’s research interests are predominantly in the fields of neutrino and astroparticle physics. His efforts are focused on (but not limited to) three major areas of research: studying the physics of coherent neutrino-nucleus scattering; novel searches for the dark matter in our universe; and searches for zero neutrino double beta decay. The unifying aspect of the work is the common need for new and creative detector development in order to solve some of the “hard” problems in low-background rare-event detection.
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