A5042044360- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Muon and positron interactions and applications
- Nuclear physics research studies
- Scientific Research and Discoveries
- Medical Imaging Techniques and Applications
- Noncommutative and Quantum Gravity Theories
- Quantum Mechanics and Applications
- Advanced X-ray and CT Imaging
- Radiation Therapy and Dosimetry
- Advanced Radiotherapy Techniques
- Advanced Chemical Physics Studies
- Nuclear reactor physics and engineering
- Quantum, superfluid, helium dynamics
- Superconducting and THz Device Technology
- Particle accelerators and beam dynamics
Laboratoire de Physique Subatomique et des Technologies Associées
2016-2025
IMT Atlantique
2018-2025
Centre National de la Recherche Scientifique
2015-2025
Nantes Université
2015-2025
Institut National de Physique Nucléaire et de Physique des Particules
2018-2025
A. Alikhanyan National Laboratory
2022
Beijing Normal University
2022
Université Libre de Bruxelles
2022
Pontifical Catholic University of Rio de Janeiro
2022
Federico Santa María Technical University
2022
Precise predictions of the antineutrino spectra emitted by nuclear reactors is a key ingredient in measurements reactor neutrino oscillations as well recent applications to surveillance power plants context nonproliferation weapons. We report new calculations including latest information from databases and detailed error budget. The first part this work so-called ab initio approach where total spectrum built sum all $\ensuremath{\beta}$ branches fission products predicted an evolution code....
In this paper, we study the impact of inclusion recently measured beta decay properties $^{102;104;105;106;107}$Tc, $^{105}$Mo, and $^{101}$Nb nuclei in an updated calculation antineutrino energy spectra four fissible isotopes $^{235, 238}$U, $^{239,241}$Pu. These actinides are main contributors to fission processes Pressurized Water Reactors. The feeding probabilities above-mentioned Tc, Mo Nb have been found play a major role $\gamma$ component heat $^{239}$Pu, solving large part...
Originally designed as a new nuclear reactor monitoring device, the Nucifer detector has successfully detected its first neutrinos. We provide second-shortest baseline measurement of neutrino flux. The detection electron antineutrinos emitted in decay chains fission products, combined with core simulations, provides tool to assess both thermal power and fissile content whole could be used by International Agency for Atomic Energy enhance safeguards civil reactors. Deployed at only 7.2 m away...
The next generation of very-short-baseline reactor experiments will require compact detectors operating at surface level and close to a nuclear reactor. This paper presents new detector concept based on composite solid scintillator technology. target uses cubes polyvinyltoluene interleaved with 6LiF:ZnS(Ag) phosphor screens detect the products inverse beta decay reaction. A multi-tonne system built from these individual cells can provide precise localisation scintillation signals, making...
The major advances achieved over the last decades in understanding of fundamental neutrino physics allow us to apply detection reactor antineutrino signals automatic and nonintrusive nuclear power plant surveys. Here, we present NUCIFER experiment, a 1-ton Gd-doped liquid scintillator detector be installed few 10 m from core for measurements its thermal plutonium (Pu) content. design such small volume has been focused on high efficiency (~ 50% good background rejection. Detailed simulations...
We present a search for signatures of neutrino mixing electron anti-neutrinos with additional hypothetical sterile flavors using the Double Chooz experiment. The is based on data from 5 years operation Chooz, including 2 in two-detector configuration. analysis profile likelihood, i.e.\ comparing to model prediction disappearance data-to-data comparison two respective detectors. optimized three active and one neutrino. It sensitive typical mass range $5 \cdot 10^{-3} $ eV$^2 \lesssim \Delta...
The measurement of neutrino Mass Ordering (MO) is a fundamental element for the understanding leptonic flavour sector Standard Model Particle Physics. Its determination relies on precise $\Delta m^2_{31}$ and m^2_{32}$ using either vacuum oscillations, such as ones studied by medium baseline reactor experiments, or matter effect modified oscillations those manifesting in long-baseline beams (LB$\nu$B) atmospheric experiments. Despite existing MO indication today, fully resolved...
The SoLid experiment aims to measure neutrino oscillation at a baseline of 6.4 m from the BR2 nuclear reactor in Belgium. Anti-neutrinos interact via inverse beta decay (IBD), resulting positron and neutron signal that are correlated time space. detector operates surface building, with modest shielding, relies on extremely efficient online rejection backgrounds order identify these interactions. A novel design has been developed using 12800 5 cm cubes for high segmentation. Each cube is...
This paper presents a comprehensive optimisation study to maximise the light collection efficiency of scintillating cube elements used in SoLid detector. Very short baseline reactor experiments, like SoLid, look for active sterile neutrino oscillation signatures anti-neutrino energy spectrum as function distance core and energy. Performing precise search requires high yield uniformity response detector volume. The experiment uses an innovative hybrid technology with two different...
The formation of the Earth remains an epoch with mysterious puzzles extending to our still incomplete understanding planet's potential origin and bulk composition. Direct confirmation Earth's internal heat engine was accomplished by successful observation geoneutrinos originating from uranium (U) thorium (Th) progenies, manifestations natural radioactivity dominated potassium (40K) decay chains (238U) (232Th). This radiogenic energy output is critical planetary dynamics must be accurately...
The yields and production rates of the radioisotopes $^9$Li $^8$He created by cosmic muon spallation on $^{12}$C, have been measured two detectors Double Chooz experiment. identical are located at separate sites depths, which means they subject to different spectra. near (far) detector has an overburden $\sim$120 m.w.e. ($\sim$300 m.w.e.) corresponding a mean energy $32.1\pm2.0\,\mathrm{GeV}$ ($63.7\pm5.5\,\mathrm{GeV}$). Comparing data detailed simulation decays, contribution radioisotope...
The SoLid experiment has been designed to search for an oscillation pattern induced by a light sterile neutrino state, utilising the BR2 reactor of SCK⋅CEN, in Belgium. detector leverages new hybrid technology, two distinct scintillators cubic array, creating highly segmented volume. A combination 5 cm polyvinyltoluene cells, with 6LiF:ZnS(Ag) sheets on faces each cube, facilitate reconstruction signals. Whilst high granularity provides powerful toolset discriminate backgrounds; itself...
Sterile neutrinos have been considered as a possible explanation for the recent reactor and Gallium anomalies arising from reanalysis of flux calibration data previous neutrino experiments. A way to test this hypothesis is look distortions anti-neutrino energy caused by oscillation active sterile at close stand-off (∼6–8m) compact core. Due low rate interactions main challenge in such measurement control high level gamma rays neutron background. The SoLid experiment proposal search...
The major advances achieved over the last decades in understanding of fundamental neutrino physics allow us to apply detection reactor antineutrino signals automatic and non-intrusive nuclear power plant surveys. Here we present NUCIFER experiment, a 1 ton Gd-doped liquid scintillator detector be installed few 10 m from core for measurements its thermal Plutonium content. design such small volume has been focused on high efficiency (~50%) good background rejection. Detailed simulations...
This publication provides a coherent treatment for the reactor neutrino flux uncertainties suppression, specially focussed on latest $θ_{13}$ measurement. The starts with single detector in site, most relevant all experiments beyond $θ_{13}$. We demonstrate there is no trivial error cancellation, thus systematic can remain dominant even after adoption of multi-detector configurations. However, three mechanisms suppression have been identified and calculated context Double Chooz, Daya Bay...
The detailed understanding of the antineutrino emission from research reactors is mandatory for any high sensitivity experiments either fundamental or applied neutrino physics, as well a good control gamma and neutron backgrounds induced by reactor operation. In this article, associated to thermal reactor: OSIRIS located in Saclay, France, computed first part. calculation performed with summation method, which sums all contributions beta decay branches fission products, coupled time complete...
We present the characterization of a novel radiation detector based on an opaque water-based liquid scintillator. Opaque scintillators, also known as LiquidO, are made to be highly scattering, such that scintillation light is effectively confined, and read out through wavelength-shifting fibers. The 1-liter, 32-channel prototype demonstrates capability for both spectroscopy topological reconstruction point-like events. design, construction, evaluation described, including modeling optical...