Antineutrino-based detection can function as a barrier for locating nuclear submarines, with a 20 kt detector achieving Z_A ≈ 2.54 in the Strait of Gibraltar for a 100 MW case and higher scores with multiple detectors.
Direct Measurement of Backgrounds using Reactor-Off Data in Double Chooz
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abstract
Double Chooz is unique among modern reactor-based neutrino experiments studying $\bar \nu_e$ 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$\pm$0.4 events/day is obtained. The background model for accidentals, cosmogenic $\beta$-$n$-emitting isotopes, fast neutrons from cosmic muons, and stopped-$\mu$ 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.
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Locating nuclear-powered submarines with antineutrinos
Antineutrino-based detection can function as a barrier for locating nuclear submarines, with a 20 kt detector achieving Z_A ≈ 2.54 in the Strait of Gibraltar for a 100 MW case and higher scores with multiple detectors.