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Gamma Backgrounds for Experiments at the High Flux Isotope Reactor
Preprint   Open access

Gamma Backgrounds for Experiments at the High Flux Isotope Reactor

M Andriamirado, A. B Balantekin, C Baldenegro, C. D Bass, O. Benevides Rodrigues, E. P Bernard, N. S Bowden, C. D Bryan, R Carr, T Classen, …
ArXiv.org
07 Jul 2026
url
https://doi.org/10.48550/arXiv.2607.05834View
Preprint (Author's original) Open arXiv.org - Non-exclusive license to distribute

Abstract

Physics - High Energy Physics - Experiment Physics - Nuclear Experiment
This article describes the deployment of a germanium detector at Oak Ridge National Lab's High Flux Isotope Reactor (HFIR) for the purpose of understanding the energy and spatial distribution of the gamma field in the experiment hall where the Precision Reactor Oscillation and Spectrum Experiment (PROSPECT) took data and future neutrino experiments could be located. The sources from both the reactor and the neutron beamlines are described in detail, along with their temporal variations due to reactor power and their spatial variations due to the geometry of the beamlines and building materials in the vicinity. Additionally, a shielding study was performed to assess the amount that backgrounds in tens of keV range can be mitigated. This work helps inform backgrounds for future experiments at reactors such as IBD-based neutrino measurements and CEvNS measurements.

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