Directional Response of Several Geometries for Reactor-Neutrino Detectors

Abstract

We report simulation studies of six low-energy electron-antineutrino detector designs, with the goal of determining their ability to resolve the direction to an antineutrino source. Such detectors with target masses on the one-ton scale are well-suited to reactor monitoring at distances of 5--25 meters from the core. They can provide accurate measurements of reactor operating power, fuel mix, and burnup, as well as unsurpassed nuclear non-proliferation information in a non-contact cooperating reactor scenario such as those used by IAEA. A number of groups around the world are working on programs to develop detectors similar to some of those in this study. Here, we examine and compare several approaches to detector geometry for their ability not only to detect the inverse beta decay (IBD) reaction, but also to determine the source direction of incident antineutrinos. The information from these detectors provides insight into reactor power and burning profile, which is especially useful in constraining the clandestine production of weapons material. In a live deployment, a non-proliferation detector must be able to isolate the subject reactor, possibly from a field of much-larger power reactors; directional sensitivity can help greatly with this task. We also discuss implications for using such detectors in longer-distance observation of reactors, from a few km to hundreds of km. We have modeled six abstracted detector designs, including two for which we have operational data for validating our computer modeling and analytical processes. We have found that the most promising options, regardless of scale and range, have angular resolutions on the order of a few degrees, which is better than any yet achieved in practice by a factor of at least two.

arXiv comment16 pages, 17 figures Primary Author: Mark J. Duvall

References in corpus (25)

• Evidence for oscillation of atmospheric neutrinos
• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• The Reactor Antineutrino Anomaly
• The angular distribution of the reaction ${\bar{\nu }}_e+p\to e^{+}+n$
• Combined Analysis of all Three Phases of Solar Neutrino Data from the Sudbury Neutrino Observatory
• Results from the Palo Verde Neutrino Oscillation Experiment
• Improved measurements of the neutrino mixing angle ${\theta }_{13}$ with the Double Chooz detector
• A side-by-side comparison of Daya Bay antineutrino detectors
• Cosmogenic Backgrounds in Borexino at 3800 m water-equivalent depth
• Neutrino Detectors as Tools for Nuclear Security
• Determination of neutrino incoming direction in the CHOOZ experiment and Supernova explosion location by scintillator detectors
• Reevaluating reactor antineutrino spectra with new measurements of the ratio between ${}^{235}$U and ${}^{239}$Pu $\beta$ spectra
• Fuel-composition dependent reactor antineutrino yield at RENO
• Reactor antineutrino monitoring with a plastic scintillator array as a new safeguards method
• A novel segmented-scintillator antineutrino detector
• Antineutrino monitoring for the Iranian heavy water reactor
• Observation of Reactor Antineutrinos with a Rapidly-Deployable Surface-Level Detector
• DANSSino: a pilot version of the DANSS neutrino detector
• Final Measurement of the U235 Antineutrino Energy Spectrum with the PROSPECT-I Detector at HFIR
• SANDD: A directional antineutrino detector with segmented 6Li-doped pulse-shape-sensitive plastic scintillator
• Evidence of Antineutrinos from Distant Reactors using Pure Water at SNO+
• Directional Antineutrino Detection
• Exploiting the directional sensitivity of the Double Chooz near detector
• Design and Characterization of an Optically-Segmented Single Volume Scatter Camera Module

Cited by in corpus (1)

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