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Article ; Online: Short-lived noble gas effluent trends from a research reactor.

Dion, M P / Conant, A J / Dayman, Kenneth J / Glasgow, D / Chandler, David

2023 Volume 270, Page(s) 107281

Abstract: An understanding of anthropogenic sources of radioactive noble gases in the atmosphere is needed to enhance the discrimination ability of the International Monitoring System's sensors. These sources include commercial and research nuclear reactors and ... ...

Abstract	An understanding of anthropogenic sources of radioactive noble gases in the atmosphere is needed to enhance the discrimination ability of the International Monitoring System's sensors. These sources include commercial and research nuclear reactors and medical isotope production facilities. While abiding by local environmental ordinances these facilities all emit noble gas radioisotopes through normal operation. This research presents measurements and analysis of noble gas isotopes (
MeSH term(s)	Air Pollutants, Radioactive/analysis ; Xenon Radioisotopes/analysis ; Radiation Monitoring ; Noble Gases ; Radioisotopes
Chemical Substances	Air Pollutants, Radioactive ; Xenon Radioisotopes ; Noble Gases ; Radioisotopes
Language	English
Publishing date	2023-08-29
Publishing country	England
Document type	Journal Article
ZDB-ID	1483112-0
ISSN	1879-1700 ; 0265-931X
ISSN (online)	1879-1700
ISSN	0265-931X
DOI	10.1016/j.jenvrad.2023.107281
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Article ; Online: Final Measurement of the ^{235}U Antineutrino Energy Spectrum with the PROSPECT-I Detector at HFIR.

Andriamirado, M / Balantekin, A B / Bass, C D / Bergeron, D E / Bernard, E P / Bowden, N S / Bryan, C D / Carr, R / Classen, T / Conant, A J / Deichert, G / Delgado, A / Diwan, M V / Dolinski, M J / Erickson, A / Foust, B T / Gaison, J K / Galindo-Uribari, A / Gilbert, C E /

Gokhale, S / Grant, C / Hans, S / Hansell, A B / Heeger, K M / Heffron, B / Jaffe, D E / Jayakumar, S / Ji, X / Jones, D C / Koblanski, J / Kunkle, P / Kyzylova, O / LaBelle, D / Lane, C E / Langford, T J / LaRosa, J / Littlejohn, B R / Lu, X / Maricic, J / Mendenhall, M P / Meyer, A M / Milincic, R / Mueller, P E / Mumm, H P / Napolitano, J / Neilson, R / Nikkel, J A / Nour, S / Palomino Gallo, J L / Pushin, D A / Qian, X / Roca, C / Rosero, R / Searles, M / Surukuchi, P T / Sutanto, F / Tyra, M A / Venegas-Vargas, D / Weatherly, P B / Wilhelmi, J / Woolverton, A / Yeh, M / Zhang, C / Zhang, X

Physical review letters

2023 Volume 131, Issue 2, Page(s) 21802

Abstract: This Letter reports one of the most precise measurements to date of the antineutrino spectrum from a purely ^{235}U-fueled reactor, made with the final dataset from the PROSPECT-I detector at the High Flux Isotope Reactor. By extracting information from ... ...

Abstract	This Letter reports one of the most precise measurements to date of the antineutrino spectrum from a purely ^{235}U-fueled reactor, made with the final dataset from the PROSPECT-I detector at the High Flux Isotope Reactor. By extracting information from previously unused detector segments, this analysis effectively doubles the statistics of the previous PROSPECT measurement. The reconstructed energy spectrum is unfolded into antineutrino energy and compared with both the Huber-Mueller model and a spectrum from a commercial reactor burning multiple fuel isotopes. A local excess over the model is observed in the 5-7 MeV energy region. Comparison of the PROSPECT results with those from commercial reactors provides new constraints on the origin of this excess, disfavoring at 2.0 and 3.7 standard deviations the hypotheses that antineutrinos from ^{235}U are solely responsible and noncontributors to the excess observed at commercial reactors, respectively.
Language	English
Publishing date	2023-07-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.131.021802
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Book ; Online: Final Measurement of the U235 Antineutrino Energy Spectrum with the PROSPECT-I Detector at HFIR

Adriamirado, M. / Balantekin, A. B. / Bass, C. D. / Bergeron, D. E. / Bernard, E. P. / Bowden, N. S. / Bryan, C. D. / Carr, R. / Classen, T. / Conant, A. J. / Deichert, G. / Delgado, A. / Diwan, M. V. / Dolinski, M. J. / Erickson, A. / Foust, B. T. / Gaison, J. K. / Galindo-Uribari, A. / Gilbert, C. E. /

Gokhale, S. / Grant, C. / Hans, S. / Hansell, A. B. / Heeger, K. M. / Heffron, B. / Jaffe, D. E. / Jayakumar, S. / Ji, X. / Jones, D. C. / Koblanski, J. / Kunkle, P. / Kyzylova, O. / LaBelle, D. / Lane, C. E. / Langford, T. J. / LaRosa, J. / Littlejohn, B. R. / Lu, X. / Maricic, J. / Mendenhall, M. P. / Meyer, A. M. / Milincic, R. / Mueller, P. E. / Mumm, H. P. / Napolitano, J. / Neilson, R. / Nikkel, J. A. / Nour, S. / Gallo, J. L. Palomino / Pushin, D. A.

2022

Abstract: This Letter reports one of the most precise measurements to date of the antineutrino spectrum from a purely U235-fueled reactor, made with the final dataset from the PROSPECT-I detector at the High Flux Isotope Reactor. By extracting information from ... ...

Abstract	This Letter reports one of the most precise measurements to date of the antineutrino spectrum from a purely U235-fueled reactor, made with the final dataset from the PROSPECT-I detector at the High Flux Isotope Reactor. By extracting information from previously unused detector segments, this analysis effectively doubles the statistics of the previous PROSPECT measurement. The reconstructed energy spectrum is unfolded into antineutrino energy and compared with both the Huber-Mueller model and a spectrum from a commercial reactor burning multiple fuel isotopes. A local excess over the model is observed in the 5MeV to 7MeV energy region. Comparison of the PROSPECT results with those from commercial reactors provides new constraints on the origin of this excess, disfavoring at 2.2 and 3.2 standard deviations the hypotheses that antineutrinos from U235 are solely responsible and non-contributors to the excess observed at commercial reactors respectively. Comment: The paper has been updated with an improved parametrization of the observed antineutrino spectrum excess and extended discussion on its potential isotopic origin
Keywords	Nuclear Experiment ; High Energy Physics - Experiment
Subject code	660
Publishing date	2022-12-20
Publishing country	us
Document type	Book ; Online
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Article ; Online: Joint Measurement of the ^{235}U Antineutrino Spectrum by PROSPECT and STEREO.

Almazán, H / Andriamirado, M / Balantekin, A B / Band, H R / Bass, C D / Bergeron, D E / Bernard, L / Blanchet, A / Bonhomme, A / Bowden, N S / Bryan, C D / Buck, C / Classen, T / Conant, A J / Deichert, G / Del Amo Sanchez, P / Delgado, A / Diwan, M V / Dolinski, M J /

El Atmani, I / Erickson, A / Foust, B T / Gaison, J K / Galindo-Uribarri, A / Gilbert, C E / Hans, S / Hansell, A B / Heeger, K M / Heffron, B / Jaffe, D E / Jayakumar, S / Ji, X / Jones, D C / Koblanski, J / Kyzylova, O / Labit, L / Lamblin, J / Lane, C E / Langford, T J / LaRosa, J / Letourneau, A / Lhuillier, D / Licciardi, M / Lindner, M / Littlejohn, B R / Lu, X / Maricic, J / Materna, T / Mendenhall, M P / Meyer, A M / Milincic, R / Mueller, P E / Mumm, H P / Napolitano, J / Neilson, R / Nikkel, J A / Nour, S / Palomino, J L / Pessard, H / Pushin, D A / Qian, X / Réal, J-S / Ricol, J-S / Roca, C / Rogly, R / Rosero, R / Salagnac, T / Savu, V / Schoppmann, S / Searles, M / Sergeyeva, V / Soldner, T / Stutz, A / Surukuchi, P T / Tyra, M A / Varner, R L / Venegas-Vargas, D / Vialat, M / Weatherly, P B / White, C / Wilhelmi, J / Woolverton, A / Yeh, M / Zhang, C / Zhang, X

Physical review letters

2022 Volume 128, Issue 8, Page(s) 81802

Abstract: The PROSPECT and STEREO collaborations present a combined measurement of the pure ^{235}U antineutrino spectrum, without site specific corrections or detector-dependent effects. The spectral measurements of the two highest precision experiments at ... ...

Abstract	The PROSPECT and STEREO collaborations present a combined measurement of the pure ^{235}U antineutrino spectrum, without site specific corrections or detector-dependent effects. The spectral measurements of the two highest precision experiments at research reactors are found to be compatible with χ^{2}/ndf=24.1/21, allowing a joint unfolding of the prompt energy measurements into antineutrino energy. This ν[over ¯]_{e} energy spectrum is provided to the community, and an excess of events relative to the Huber model is found in the 5-6 MeV region. When a Gaussian bump is fitted to the excess, the data-model χ^{2} value is improved, corresponding to a 2.4σ significance.
Language	English
Publishing date	2022-03-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.128.081802
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Book ; Online: PROSPECT-II Physics Opportunities

Andriamirado, M. / Balantekin, A. B. / Band, H. R. / Bass, C. D. / Bergeron, D. E. / Bowden, N. S. / Bryan, C. D. / Carr, R. / Classen, T. / Conant, A. J. / Deichert, G. / Delgado, A. / Diwan, M. V. / Dolinski, M. J. / Erickson, A. / Foust, B. T. / Gaison, J. K. / Galindo-Uribari, A. / Gilbert, C. E. /

Grant, C. / Hans, S. / Hansell, A. B. / Heeger, K. M. / Heffron, B. / Jaffe, D. E. / Jayakumar, S. / Ji, X. / Jones, D. C. / Koblanski, J. / Kunkle, P. / Kyzylova, O. / Lane, C. E. / Langford, T. J. / LaRosa, J. / Littlejohn, B. R. / Lu, X. / Maricic, J. / Mendenhall, M. P. / Meyer, A. M. / Milincic, R. / Mueller, P. E. / Mumm, H. P. / Napolitano, J. / Neilson, R. / Nikkel, J. A. / Nour, S. / Palomino, J. L. / Pushin, D. A. / Qian, X. / Rosero, R.

2021

Abstract: The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, has made world-leading measurements of reactor antineutrinos at short baselines. In its first phase, conducted at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, ... ...

Abstract	The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, has made world-leading measurements of reactor antineutrinos at short baselines. In its first phase, conducted at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, PROSPECT produced some of the strongest limits on eV-scale sterile neutrinos, made a precision measurement of the reactor antineutrino spectrum from $^{235}$U, and demonstrated the observation of reactor antineutrinos in an aboveground detector with good energy resolution and well-controlled backgrounds. The PROSPECT collaboration is now preparing an upgraded detector, PROSPECT-II, to probe yet unexplored parameter space for sterile neutrinos and contribute to a full resolution of the Reactor Antineutrino Anomaly, a longstanding puzzle in neutrino physics. By pressing forward on the world's most precise measurement of the $^{235}$U antineutrino spectrum and measuring the absolute flux of antineutrinos from $^{235}$U, PROSPECT-II will sharpen a tool with potential value for basic neutrino science, nuclear data validation, and nuclear security applications. Following a two-year deployment at HFIR, an additional PROSPECT-II deployment at a low enriched uranium reactor could make complementary measurements of the neutrino yield from other fission isotopes. PROSPECT-II provides a unique opportunity to continue the study of reactor antineutrinos at short baselines, taking advantage of demonstrated elements of the original PROSPECT design and close access to a highly enriched uranium reactor core.
Keywords	High Energy Physics - Experiment ; Nuclear Experiment ; Physics - Instrumentation and Detectors
Subject code	660
Publishing date	2021-07-08
Publishing country	us
Document type	Book ; Online
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Article ; Online: Nonfuel Antineutrino Contributions in the High Flux Isotope Reactor.

Balantekin, A B / Band, H R / Bass, C D / Bergeron, D E / Berish, D / Bowden, N S / Brodsky, J P / Bryan, C D / Classen, T / Conant, A J / Deichert, G / Diwan, M V / Dolinski, M J / Erickson, A / Foust, B T / Gaison, J K / Galindo-Uribarri, A / Gilbert, C E / Hackett, B T /

Hans, S / Hansell, A B / Heeger, K M / Heffron, B / Jaffe, D E / Ji, X / Jones, D C / Kyzylova, O / Lane, C E / Langford, T J / LaRosa, J / Littlejohn, B R / Lu, X / Maricic, J / Mendenhall, M P / Milincic, R / Mitchell, I / Mueller, P E / Mumm, H P / Napolitano, J / Neilson, R / Nikkel, J A / Norcini, D / Nour, S / Palomino-Gallo, J L / Pushin, D A / Qian, X / Romero-Romero, E / Rosero, R / Surukuchi, P T / Tyra, M A / Varner, R L / White, C / Wilhelmi, J / Woolverton, A / Yeh, M / Zhang, A / Zhang, C / Zhang, X

Physical review. C

2020 Volume 101

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 ... ...

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
Language	English
Publishing date	2020-11-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	2844098-5
ISSN	2469-9993 ; 2469-9985
ISSN (online)	2469-9993
ISSN	2469-9985
DOI	10.1103/PhysRevC.101.054605
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Article ; Online: Measurement of the Antineutrino Spectrum from ^{235}U Fission at HFIR with PROSPECT.

Ashenfelter, J / Balantekin, A B / Band, H R / Bass, C D / Bergeron, D E / Berish, D / Bowden, N S / Brodsky, J P / Bryan, C D / Cherwinka, J J / Classen, T / Conant, A J / Cox, A A / Davee, D / Dean, D / Deichert, G / Diwan, M V / Dolinski, M J / Erickson, A /

Febbraro, M / Foust, B T / Gaison, J K / Galindo-Uribarri, A / Gilbert, C E / Gilje, K E / Hackett, B T / Hans, S / Hansell, A B / Heeger, K M / Insler, J / Jaffe, D E / Ji, X / Jones, D C / Kyzylova, O / Lane, C E / Langford, T J / LaRosa, J / Littlejohn, B R / Lu, X / Martinez Caicedo, D A / Matta, J T / McKeown, R D / Mendenhall, M P / Minock, J M / Mueller, P E / Mumm, H P / Napolitano, J / Neilson, R / Nikkel, J A / Norcini, D / Nour, S / Pushin, D A / Qian, X / Romero-Romero, E / Rosero, R / Sarenac, D / Surukuchi, P T / Telles, A B / Tyra, M A / Varner, R L / Viren, B / White, C / Wilhelmi, J / Wise, T / Yeh, M / Yen, Y-R / Zhang, A / Zhang, C / Zhang, X

Physical review letters

2019 Volume 122, Issue 25, Page(s) 251801

Abstract: This Letter reports the first measurement of the ^{235}U ν[over ¯]_{e} energy spectrum by PROSPECT, the Precision Reactor Oscillation and Spectrum experiment, operating 7.9 m from the 85 MW_{th} highly enriched uranium (HEU) High Flux Isotope Reactor. ... ...

Abstract	This Letter reports the first measurement of the ^{235}U ν[over ¯]_{e} energy spectrum by PROSPECT, the Precision Reactor Oscillation and Spectrum experiment, operating 7.9 m from the 85 MW_{th} highly enriched uranium (HEU) High Flux Isotope Reactor. With a surface-based, segmented detector, PROSPECT has observed 31678±304(stat) ν[over ¯]_{e}-induced inverse beta decays, the largest sample from HEU fission to date, 99% of which are attributed to ^{235}U. Despite broad agreement, comparison of the Huber ^{235}U model to the measured spectrum produces a χ^{2}/ndf=51.4/31, driven primarily by deviations in two localized energy regions. The measured ^{235}U spectrum shape is consistent with a deviation relative to prediction equal in size to that observed at low-enriched uranium power reactors in the ν[over ¯]_{e} energy region of 5-7 MeV.
Language	English
Publishing date	2019-07-04
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.122.251801
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Book ; Online: Nonfuel Antineutrino Contributions in the High Flux Isotope Reactor

Balantekin, A. B. / Band, H. R. / Bass, C. D. / Bergeron, D. E. / Berish, D. / Bowden, N. S. / Brodsky, J. P. / Bryan, C. D. / Classen, T. / Conant, A. J. / Deichert, G. / Diwan, M. V. / Dolinski, M. J. / Erickson, A. / Foust, B. T. / Gaison, J. K. / Galindo-Uribarri, A. / Gilbert, C. E. / Hans, B. T. Hackett S. /

Hansell, A. B. / Heeger, K. M. / Jaffe, B. Heffron D. E. / Ji, X. / Jones, D. C. / Kyzylova, O. / Lane, C. E. / Langford, T. J. / LaRosa, J. / Littlejohn, B. R. / Lu, X. / Maricic, J. / Mendenhall, M. P. / Milincic, R. / Mitchell, I. / Mueller, P. E. / Mumm, H. P. / Napolitano, J. / Neilson, R. / Nikkel, J. A. / Norcini, D. / Nour, S. / Palomino-Gallo, J. L. / Pushin, D. A. / Qian, X. / Romero-Romero, E. / Rosero, R. / Surukuchi, P. T. / Tyra, M. A. / Varner, R. L. / White, C. / Wilhelmi, J. / Woolverton, A. / Yeh, M. / Zhang, A. / Zhang, C. / Zhang, X.

2020

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 $\overline{\nu}_{e}$ is important when making theoretical predictions. One source of $\overline{\nu}_{e}$ that is often neglected arises from the irradiation of the nonfuel materials in reactors. The $\overline{\nu}_{e}$ 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 $\overline{\nu}_{e}$ 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 $\overline{\nu}_{e}$ source for the the Precision Reactor Oscillation and Spectrum Measurement (PROSPECT) experiment. Overall, we observe that the nonfuel $\overline{\nu}_{e}$ 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 $\overline{\nu}_{e}$ contribution.
Keywords	Nuclear Experiment ; High Energy Physics - Experiment
Subject code	660
Publishing date	2020-03-27
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: First Search for Short-Baseline Neutrino Oscillations at HFIR with PROSPECT.

Ashenfelter, J / Balantekin, A B / Baldenegro, C / Band, H R / Bass, C D / Bergeron, D E / Berish, D / Bignell, L J / Bowden, N S / Bricco, J / Brodsky, J P / Bryan, C D / Bykadorova Telles, A / Cherwinka, J J / Classen, T / Commeford, K / Conant, A J / Cox, A A / Davee, D /

Dean, D / Deichert, G / Diwan, M V / Dolinski, M J / Erickson, A / Febbraro, M / Foust, B T / Gaison, J K / Galindo-Uribarri, A / Gilbert, C E / Gilje, K E / Glenn, A / Goddard, B W / Hackett, B T / Han, K / Hans, S / Hansell, A B / Heeger, K M / Heffron, B / Insler, J / Jaffe, D E / Ji, X / Jones, D C / Koehler, K / Kyzylova, O / Lane, C E / Langford, T J / LaRosa, J / Littlejohn, B R / Lopez, F / Lu, X / Martinez Caicedo, D A / Matta, J T / McKeown, R D / Mendenhall, M P / Miller, H J / Minock, J M / Mueller, P E / Mumm, H P / Napolitano, J / Neilson, R / Nikkel, J A / Norcini, D / Nour, S / Pushin, D A / Qian, X / Romero-Romero, E / Rosero, R / Sarenac, D / Seilhan, B S / Sharma, R / Surukuchi, P T / Trinh, C / Tyra, M A / Varner, R L / Viren, B / Wagner, J M / Wang, W / White, B / White, C / Wilhelmi, J / Wise, T / Yao, H / Yeh, M / Yen, Y-R / Zhang, A / Zhang, C / Zhang, X / Zhao, M

Physical review letters

2019 Volume 121, Issue 25, Page(s) 251802

Abstract: This Letter reports the first scientific results from the observation of antineutrinos emitted by fission products of ^{235}U at the High Flux Isotope Reactor. PROSPECT, the Precision Reactor Oscillation and Spectrum Experiment, consists of a segmented 4 ...

Abstract	This Letter reports the first scientific results from the observation of antineutrinos emitted by fission products of ^{235}U at the High Flux Isotope Reactor. PROSPECT, the Precision Reactor Oscillation and Spectrum Experiment, consists of a segmented 4 ton ^{6}Li-doped liquid scintillator detector covering a baseline range of 7-9 m from the reactor and operating under less than 1 m water equivalent overburden. Data collected during 33 live days of reactor operation at a nominal power of 85 MW yield a detection of 25 461±283 (stat) inverse beta decays. Observation of reactor antineutrinos can be achieved in PROSPECT at 5σ statistical significance within 2 h of on-surface reactor-on data taking. A reactor model independent analysis of the inverse beta decay prompt energy spectrum as a function of baseline constrains significant portions of the previously allowed sterile neutrino oscillation parameter space at 95% confidence level and disfavors the best fit of the reactor antineutrino anomaly at 2.2σ confidence level.
Language	English
Publishing date	2019-01-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.121.251802
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: A Low Mass Optical Grid for the PROSPECT Reactor Antineutrino Detector

PROSPECT Collaboration / Ashenfelter, J. / Balantekin, A. B. / Band, H. R. / Bass, C. D. / Bergeron, D. E. / Berish, D. / Bowden, N. S. / Brodsky, J. P. / Bryan, C. D. / Cherwinka, J. J. / Classen, T. / Conant, A. J. / Davee, D. / Dean, D. / Deichert, G. / Diwan, A. E. Detweiler M. V. / Dolinski, M. J. / Erickson, A. /

Febbraro, M. / Foust, B. T. / Gaison, J. K. / Galindo-Uribarri, A. / Gebre, Y. / Gilbert, C. E. / Gilje, K. E. / Gustafson, I. F. / Hackett, B. T. / Hans, S. / Hansell, A. B. / Heeger, K. M. / Hermanek, K. H. / Insler, J. / Jaffe, D. E. / Jones, D. C. / Kyzylova, O. / Lane, C. E. / Langford, T. J. / LaRosa, J. / Littlejohn, B. R. / Lu, X. / Caicedo, D. A. Martinez / Matta, J. T. / McKeown, R. D. / Mendenhall, M. P. / Minock, J. M. / Mueller, P. E. / Mumm, H. P. / Napolitano, J. / Neilson, R. / Nikkel, J. A. / Norcini, D. / Nour, S. / Pushin, D. A. / Qian, X. / Romero-Romero, E. / Rosero, R. / Sarenac, D. / Surukuchi, P. T. / Tyra, M. A. / Varner, R. L. / Viren, B. / White, C. / Wilhelmi, J. / Wise, T. / Yeh, M. / Yen, Y. -R. / Zhang, A. / Zhang, C. / Zhang, X.

2019

Abstract: PROSPECT, the Precision Reactor Oscillation and SPECTrum experiment, is a short-baseline reactor antineutrino experiment designed to provide precision measurements of the $^{235}$U product $\overline{\nu}_e$ spectrum of utilizing an optically segmented 4- ...

Abstract	PROSPECT, the Precision Reactor Oscillation and SPECTrum experiment, is a short-baseline reactor antineutrino experiment designed to provide precision measurements of the $^{235}$U product $\overline{\nu}_e$ spectrum of utilizing an optically segmented 4-ton liquid scintillator detector. PROSPECT's segmentation system, the optical grid, plays a central role in reconstructing the position and energy of $\overline{\nu}_e$ interactions in the detector. This paper is the technical reference for this PROSPECT subsystem, describing its design, fabrication, quality assurance, transportation and assembly in detail. In addition, the dimensional, optical and mechanical characterizations of optical grid components and the assembled PROSPECT target are also presented. The technical information and characterizations detailed here will inform geometry-related inputs for PROSPECT physics analysis, and can guide a variety of future particle detection development efforts, such as those using optically reflecting materials or filament-based 3D printing. Comment: 31 pages, 28 figures
Keywords	Physics - Instrumentation and Detectors
Subject code	621
Publishing date	2019-02-18
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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