Direct measurement of backgrounds using reactor-off data in Double Chooz
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Conrad_Direct measurement.pdf
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Author(s)
Conrad, Janet
Jones, Christopher LaDon
Spitz, Joshua B.
Terao, Yasuaki
Winslow, L.
Date Issued
January 2013
Journal
Physical Review D
Publisher
American Physical Society
Citation
Abe, Y., C. Aberle, J. C. dos Anjos, J. C. Barriere, M. Bergevin, A. Bernstein, T. J. C. Bezerra, et al. “Direct Measurement of Backgrounds Using Reactor-Off Data in Double Chooz.” Phys. Rev. D 87, no. 1 (January 2013).
Version
Original manuscript
Abstract
Double Chooz is unique among modern reactor-based neutrino experiments studying ν¯e disappearance in that data can be collected with all reactors off. In this paper, we present data from 7.53 days of reactor-off running. Applying the same selection criteria as used in the Double Chooz reactor-on oscillation analysis, a measured background rate of 1.0±0.4 events/day is obtained. The background model for accidentals, cosmogenic β-n-emitting isotopes, fast neutrons from cosmic muons, and stopped-μ decays used in the oscillation analysis is demonstrated to be correct within the uncertainties. Kinematic distributions of the events, which are dominantly cosmic-ray-produced correlated-background events, are provided. The background rates are scaled to the shielding depths of two other reactor-based oscillation experiments, Daya Bay and RENO.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.87.011102
