Comparison of anti-neutrino reactor spectrum models with the Bugey 3 measurements

Achkar, B.; Aleksan, R.; Avenier, M.; Bagieu, G.; Bouchez, J.; Brissot, R.; Cavaignac, J.F.; Collot, J.; Cousinou, M. C.; Cussonneau, J. P.; Déclais, Y.; Dufour, Y.; Favier, Jean; Garciaz, F.; Kajfasz, E.; Kerret, H. de; Koang, D. H.; Lefièvre, B.; Lesquoy, É.; Mallet, J.; Metref, A.; Nagy, E.; Obolensky, M.; Pessard, H.; Pierre, F.; Stutz, A.; Wuthrick, J.P.

doi:10.1016/0370-2693(96)00216-x

Cited by 70 publications

(48 citation statements)

References 11 publications

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“…The inputs for calculating the overall φ(ν e ) are derived from two alternative approaches: (I) modelings on the level densities and nuclear effects [5,6], or (II) measurements of β-spectra due to neutron hitting the fissile isotopes [7]. The Bugey-3 experiment compared their data with these approaches [4] and concluded that the predictions of φ(ν e ) from (II) are consistent with measurements at the <5% level for E ν ∼2. 8-8.6 MeV.…”

Section: Reactor Neutrino Spectramentioning

confidence: 99%

“…An accuracy of up to 1.4% between calculations and measurement has been achieved in the integrated flux [3]. The measured differential spectrum from the Bugey-3 experiment [4] was compared with three models of deriving φ(ν e ). The best one gave an accuracy of better than 5% from 2.8 MeV to 8.6 MeV neutrino energy, while the other two gave discrepancies at the 10-20% level in part of this energy range.…”

Section: Introductionmentioning

confidence: 99%

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Sensitivities of low energy reactor neutrino experiments

Wong

2002

J. Phys. G: Nucl. Part. Phys.

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The low energy part of the reactor neutrino spectra has not been measured experimentally. Its uncertainties limit the sensitivities in certain reactor neutrino experiments. This article discusses the origin of these uncertainties and examines their effects on the measurements of neutrino interactions with electrons and nuclei. The discrepancies between previous results and the Standard Model expectations can be explained by the under-estimation of the reactor neutrino spectra at low energies. To optimize the experimental sensitivities, measurements forν e -e cross-sections should focus on events with large (>1.5 MeV) recoil energy while those for neutrino magnetic moment searches should emphasize on events <100 keV. The merits and attainable accuracies for neutrino-electron scattering experiments using artificial neutrino sources are discussed.

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Section: Reactor Neutrino Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensitivities of low energy reactor neutrino experiments

Wong

2002

J. Phys. G: Nucl. Part. Phys.

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“…The KamLAND geoneutrino background is dominated by ν e s from commercial nuclear reactors and the 13 C(α,n) 16 O reaction initiated by the decay of radioactive contaminants in the detector. In recent years the reactor ν e flux, which is outside the control of the experiment, was significantly reduced 2 because of an extended shutdown of the Kashiwazaki-Kariwa nuclear power station following an earthquake in July 2007.…”

mentioning

confidence: 99%

“…In the meantime, at great effort, the purity of the KamLAND scintillator was improved, eliminating most of the 210 Pb that feeds the decay chain responsible for the production of α-particles from 210 Po decay. The background from the 13 C(α,n) 16 O reaction went down by a factor of ∼20.…”

mentioning

confidence: 99%

Partial radiogenic heat model for Earth revealed by geoneutrino measurements

Gando¹,

Gando²,

Ichimura³

et al. 2011

Nature Geosci

199

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The Earth has cooled since its formation, yet the decay of radiogenic isotopes, and in particular uranium, thorium and potassium, in the planet's interior provides a continuing heat source. The current total heat flux from the Earth to space is 44.2 ± 1.0 TW, but the relative contributions from residual primordial heat and radiogenic decay remain uncertain. However, radiogenic decay can be estimated from the flux of geoneutrinos, electrically neutral particles that are emitted during radioactive decay and can pass through the Earth virtually unaffected. Here we combine precise measurements of the geoneutrino flux from the Kamioka Liquid-Scintillator Antineutrino Detector, Japan, with existing measurements from the Borexino detector, Italy. We find that decay of uranium-238 and thorium-232 together contribute 20.0 +8.8 −8.6 TW to Earth's heat flux. The neutrinos emitted from the decay of potassium-40 are below the limits of detection in our experiments, but are known to contribute 4 TW. Taken together, our observations indicate that heat from radioactive decay contributes about half of Earth's total heat flux. We therefore conclude that Earth's primordial heat supply has not yet been exhausted.

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“…Therefore, much work has been done to develop lithiumloaded liquid scintillator (LiLS) for capture-gated neutron spectroscopy [9,10,11] and antineutrino detection [12]. Because neutron capture on lithium produces only charged particles in the final state (n + Li → α + t + 0.5 MeV visible ), the capture produces a consistent signal and does not suffer geometric effects.…”

Section: Neutron Taggingmentioning

confidence: 99%

PROSPECT – A precision oscillation and spectrum experiment

Langford

2015

Nuclear and Particle Physics Proceedings

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Segmented antineutrino detectors placed near a compact research reactor provide an excellent opportunity to probe short-baseline neutrino oscillations and precisely measure the reactor antineutrino spectrum. Close proximity to a reactor combined with minimal overburden yield a high background environment that must be managed through shielding and detector technology. PROSPECT is a new experimental effort to detect reactor antineutrinos from the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, managed by UT Battelle for the U.S. Department of Energy. The detector will use novel lithium-loaded liquid scintillator capable of neutron/gamma pulse shape discrimination and neutron capture tagging. These enhancements improve the ability to identify neutrino inverse-beta decays and reject background events in analysis. Results from these efforts will be covered along with their implications for an oscillation search and a precision spectrum measurement.

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Comparison of anti-neutrino reactor spectrum models with the Bugey 3 measurements

Cited by 70 publications

References 11 publications

Sensitivities of low energy reactor neutrino experiments

Sensitivities of low energy reactor neutrino experiments

Partial radiogenic heat model for Earth revealed by geoneutrino measurements

PROSPECT – A precision oscillation and spectrum experiment

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