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Journal article
Nonfuel antineutrino contributions in the ORNL High Flux Isotope Reactor (HFIR)
Physical review. C, v 101(5)
14 May 2020
PMID: 33336123
Abstract
Reactor neutrino experiments have seen major improvements in precision in recent years. With the experimental uncertainties becoming lower than those from theory, carefully considering all sources of (nu) over bar (e), is important when making theoretical predictions. One source of (nu) over bar (e), that is often neglected arises from the irradiation of the nonfuel materials in reactors. The (nu) over bar (e) rates and energies from these sources vary widely based on the reactor type, configuration, and sampling stage during the reactor cycle and have to be carefully considered for each experiment independently. In this article, we present a formalism for selecting the possible (nu) over bar (e) sources arising from the neutron captures on reactor and target materials. We apply this formalism to the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, the (nu) over bar (e) source for the the Precision Reactor Oscillation and Spectrum Measurement (PROSPECT) experiment. Overall, we observe that the nonfuel (nu) over bar (e) contributions from HFIR to PROSPECT amount to 1% above the inverse beta decay threshold with a maximum contribution of 9% in the 1.8-2.0 MeV range. Nonfuel contributions can be particularly high for research reactors like HFIR because of the choice of structural and reflector material in addition to the intentional irradiation of target material for isotope production. We show that typical commercial pressurized water reactors fueled with low-enriched uranium will have significantly smaller nonfuel (nu) over bar (e) contribution.
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Details
- Title
- Nonfuel antineutrino contributions in the ORNL High Flux Isotope Reactor (HFIR)
- Creators
- A. B. Balantekin - University of Wisconsin–MadisonH. R. Band - Wright LaboratoryC. D. Bass - Le Moyne CollegeD. E. Bergeron - National Institute of Standards and TechnologyD. Berish - Temple UniversityN. S. Bowden - Lawrence Livermore National LaboratoryJ. P. Brodsky - Lawrence Livermore National LaboratoryC. D. Bryan - Oak Ridge National LaboratoryT. Classen - Lawrence Livermore National LaboratoryA. J. Conant - Georgia Institute of TechnologyG. Deichert - Oak Ridge National LaboratoryM. Diwan - Brookhaven National LaboratoryM. J. Dolinski - Drexel UniversityA. Erickson - Georgia Institute of TechnologyB. T. Foust - Wright LaboratoryJ. K. Gaison - Wright LaboratoryA. Galindo-Uribarri - University of Tennessee at KnoxvilleC. E. Gilbert - University of Tennessee at KnoxvilleB. T. Hackett - University of Tennessee at KnoxvilleS. Hans - Brookhaven National LaboratoryA. B. Hansell - Temple UniversityK. M. Heeger - Wright LaboratoryB. Heffron - University of Tennessee at KnoxvilleD. E. Jaffe - Brookhaven National LaboratoryX. Ji - Brookhaven National LaboratoryD. C. Jones - Temple UniversityO. Kyzylova - Drexel UniversityC. E. Lane - Drexel UniversityT. J. Langford - Wright LaboratoryJ. LaRosa - National Institute of Standards and TechnologyB. R. Littlejohn - Illinois Institute of TechnologyX. Lu - University of Tennessee at KnoxvilleJ. Maricic - University of Hawaii SystemM. P. Mendenhall - Lawrence Livermore National LaboratoryR. Milincic - University of Hawaii SystemMitchell - Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USAP. E. Mueller - Oak Ridge National LaboratoryH. P. Mumm - National Institute of Standards and TechnologyJ. Napolitano - Temple UniversityR. Neilson - Drexel UniversityJ. A. Nikkel - Wright LaboratoryD. Norcini - Wright LaboratoryS. Nour - National Institute of Standards and TechnologyJ. L. Palomino-Gallo - Illinois Institute of TechnologyD. A. Pushin - University of WaterlooX. Qian - Brookhaven National LaboratoryE. Romero-Romero - Temple UniversityR. Rosero - Brookhaven National LaboratoryP. T. Surukuchi - Wright LaboratoryM. A. Tyra - National Institute of Standards and TechnologyR. L. Varner - Oak Ridge National LaboratoryC. White - Illinois Institute of TechnologyJ. Wilhelmi - Temple UniversityA. Woolverton - University of WaterlooM. Yeh - Brookhaven National LaboratoryA. Zhang - Brookhaven National LaboratoryC. Zhang - Brookhaven National LaboratoryX. Zhang - Lawrence Livermore National LaboratoryPROSPECT Collaboration
- Publication Details
- Physical review. C, v 101(5)
- Publisher
- Amer Physical Soc
- Number of pages
- 14
- Grant note
- Yale University RGPIN-418579 / Natural Sciences and Engineering Research Council of Canada (NSERC) Brookhaven National Laboratory; United States Department of Energy (DOE) Province of Ontario DE-SC0016357; DE-SC0017660; DE-SC0017815; DE-SC0008347; DE-SC0016060; DE-SC0012704; SCW1504 / US Department of Energy (DOE) Office of Science, Office of High Energy Physics; United States Department of Energy (DOE) 2016-117 / Heising-Simons Foundation High Flux Isotope Reactor Illinois Institute of Technology Oak Ridge National Laboratory; United States Department of Energy (DOE) Canada First Research Excellence Fund (CFREF) National Institute of Standards and Technology; National Institute of Standards & Technology (NIST) - USA Temple University DE-AC52-07NA27344; DE-AC05-00OR22725 / U.S. Department of Energy; United States Department of Energy (DOE) Lawrence Livermore National Laboratory LDRD program NSF Graduate Research Fellowship Program; National Science Foundation (NSF) NA-241 / National Nuclear Security Administration's Office of International Nuclear Safeguards; National Nuclear Security Administration
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000532653200002
- Scopus ID
- 2-s2.0-85092588645
- Other Identifier
- 991019167969104721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Nuclear