A. Hourlier
A5022946136- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Medical Imaging Techniques and Applications
- Particle accelerators and beam dynamics
- Planetary Science and Exploration
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Radiopharmaceutical Chemistry and Applications
- Adversarial Robustness in Machine Learning
- Advanced X-ray and CT Imaging
- Quantum Chromodynamics and Particle Interactions
- Scientific Computing and Data Management
- Magnetic confinement fusion research
- Radiation Therapy and Dosimetry
- Anomaly Detection Techniques and Applications
- Advanced MRI Techniques and Applications
- Boron Compounds in Chemistry
- Radioactive Decay and Measurement Techniques
Institut Pluridisciplinaire Hubert Curien
2022-2024
Massachusetts Institute of Technology
2017-2023
University of Chicago
2022
Centre National de la Recherche Scientifique
2012-2022
Laboratoire AstroParticule et Cosmologie
2013-2022
University of California, Santa Barbara
2022
Université de Strasbourg
2022
Université Paris Cité
2012-2021
Sorbonne Paris Cité
2012-2018
Institut de Recherche sur les Lois Fondamentales de l'Univers
2012-2018
The Double Chooz experiment has observed 8249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years ($\mathrm{\text{reactor power}}\ifmmode\times\else\texttimes\fi{}\mathrm{\text{detector mass}}\ifmmode\times\else\texttimes\fi{}\mathrm{\text{live time}}$) exposure using a $10.3\text{ }\text{ }{\mathrm{m}}^{3}$ fiducial volume detector located at 1050 m from the reactor cores of nuclear power plant France. expectation case ${\ensuremath{\theta}}_{13}=0$ is 8937...
The Double Chooz experiment presents improved measurements of the neutrino mixing angle θ 13 using data collected in 467.90 live days from a detector positioned at an average distance 1050 m two reactor cores nuclear power plant. Several novel techniques have been developed to achieve significant reductions backgrounds and systematic uncertainties with respect previous publications, whereas efficiency $$ {\overline{\nu}}_e signal has increased. value is measured be sin2 2θ = 0.090 − 0.029 +...
The MiniBooNE experiment at Fermilab reports a total excess of $638.0\ifmmode\pm\else\textpm\fi{}52.1(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}122.2(\mathrm{syst}.)$ electronlike events from data sample corresponding to $18.75\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons-on-target in neutrino mode, which is 46% increase the with respect previously published results and $11.27\ifmmode\times\else\texttimes\fi{}{10}^{20}$ antineutrino mode. overall significance excess,...
We present a measurement of ν_{e} interactions from the Fermilab Booster Neutrino Beam using MicroBooNE liquid argon time projection chamber to address nature excess low energy observed by MiniBooNE Collaboration. Three independent searches are performed across multiple single electron final states, including an exclusive search for two-body scattering events with proton, semi-inclusive pionless events, and fully inclusive containing all hadronic states. With differing signal topologies,...
The development and operation of liquid-argon time-projection chambers for neutrino physics has created a need new approaches to pattern recognition in order fully exploit the imaging capabilities offered by this technology. Whereas human brain can excel at identifying features recorded events, it is significant challenge develop an automated, algorithmic solution. Pandora Software Development Kit provides functionality aid design implementation pattern-recognition algorithms. It promotes...
The Double Chooz experiment has determined the value of neutrino oscillation parameter $\theta_{13}$ from an analysis inverse beta decay interactions with neutron capture on hydrogen. This uses a three times larger fiducial volume than standard assessment, which is restricted to region doped gadolinium (Gd), yielding exposure 113.1 GW-ton-years. data sample used in this distinct that Gd analysis, and systematic uncertainties are also largely independent, some exceptions, such as reactor flux...
We describe the concept and procedure of drifted-charge extraction developed in MicroBooNE experiment, a single-phase liquid argon time projection chamber (LArTPC). This technique converts raw digitized TPC waveform to number ionization electrons passing through wire plane at given time. A robust recovery from both induction collection anode planes will augment 3D reconstruction, is particularly important for tomographic reconstruction algorithms. building blocks overall are described. The...
The single-phase liquid argon time projection chamber (LArTPC) provides a large amount of detailed information in the form fine-grained drifted ionization charge from particle traces. To fully utilize this information, deposited must be accurately extracted raw digitized waveforms via robust signal processing chain. Enabled by ultra-low noise levels associated with cryogenic electronics MicroBooNE detector, precise extraction induction wire planes LArTPC is qualitatively demonstrated on data...
The low-noise operation of readout electronics in a liquid argon time projection chamber (LArTPC) is critical to properly extract the distribution ionization charge deposited on wire planes TPC, especially for induction planes. This paper describes characteristics and mitigation observed noise MicroBooNE detector. MicroBooNE's single-phase LArTPC comprises two one collection sense plane with total 8256 wires. Current induced each TPC amplified shaped by custom low-power, ASICs immersed...
We have developed a convolutional neural network that can make pixel-level prediction of objects in image data recorded by liquid argon time projection chamber (LArTPC) for the first time. describe design, training techniques, and software tools to train this network. The goal work is develop complete deep based reconstruction chain MicroBooNE detector. show demonstration network's validity on real LArTPC using collection plane images. performed stopping muon...
This article presents a measurement of νe interactions without pions in the final state using MicroBooNE experiment and an investigation into excess low-energy electromagnetic events observed by MiniBooNE Collaboration. The is performed exclusive channels with (1eNp0π) (1e0p0π) visible final-state protons 6.86×1020 on target data collected from Booster Neutrino Beam at Fermilab. Events are reconstructed Pandora pattern recognition toolkit selected additional topological information liquid...
The Double Chooz collaboration presents a measurement of the neutrino mixing angle θ 13 using reactor $$ \overline{\nu_{\mathrm{e}}} observed via inverse beta decay reaction in which neutron is captured on hydrogen. This based 462.72 live days data, approximately twice as much data previous such analysis, collected with detector positioned at an average distance 1050 m from two cores. Several novel techniques have been developed to achieve significant reductions backgrounds and systematic...
We report the first measurement of double-differential and total muon neutrino charged current inclusive cross sections on argon at a mean energy 0.8 GeV. Data were collected using MicroBooNE liquid time projection chamber located in Fermilab Booster beam correspond to 1.6×10^{20} protons target exposure. The measured differential are presented as function momentum, multiple Coulomb scattering momentum technique, angle with respect direction. compare event generators find better agreement...
Large liquid argon time projection chambers (LArTPCs), especially those operating near the surface, are susceptible to space charge effects. In context of LArTPCs, effect is build-up slow-moving positive ions in detector primarily due ionization from cosmic rays, leading a distortion electric field within detector. This leads displacement reconstructed position signal electrons LArTPC detectors ("spatial distortions"), as well variations amount electron-ion recombination experienced by...
We describe a method used to calibrate the position- and time-dependent response of MicroBooNE liquid argon time projection chamber anode wires ionization particle energy loss. The makes use crossing cosmic-ray muons partially correct wire signals for multiple effects as function position, including cross-connected TPC wires, space charge effects, electron attachment impurities, diffusion, recombination. overall scale is then determined using fully-contained beam-induced originating stopping...
We present an analysis of MicroBooNE data with a signature one muon, no pions, and at least proton above momentum threshold $300\text{ }\text{ }\mathrm{MeV}/\mathrm{c}$ ($\mathrm{CC}0\ensuremath{\pi}Np$). This is the first differential cross-section measurement this topology in neutrino-argon interactions. achieve significantly lower than previous carbon scintillator-based experiments. Using collected from total approximately $1.6\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons on...
Liquid argon time projection chambers (LArTPCs) are now a standard detector technology for making accelerator neutrino measurements, due to their high material density, precise tracking, and calorimetric capabilities. An electric field (E-field) is required in such detectors drift ionization electrons the anode where they collected. The E-field of TPC often approximated be uniform between cathode planes. However, significant distortions can appear from effects as mechanical deformations,...
A novel tune has been made for the MicroBooNE experiment. The fit uses 4 new parameters within GENIE v3.0.6 Monte Carlo program. Charged current pionless data from T2K experiment was used. New uncertainties were obtained. These results will be used in future analyses.
We report results from a search for neutrino-induced neutral current (NC) resonant $\Delta$(1232) baryon production followed by $\Delta$ radiative decay, with $\langle0.8\rangle$~GeV neutrino beam. Data corresponding to MicroBooNE's first three years of operations (6.80$\times$10$^{20}$ protons on target) are used select single-photon events one or zero and without charged leptons in the final state ($1\gamma1p$ $1\gamma0p$, respectively). The background is constrained via an in-situ...
We present a measurement of the νe-interaction rate in MicroBooNE detector that addresses observed MiniBooNE anomalous low-energy excess (LEE). The approach taken isolates neutrino interactions consistent with kinematics charged-current quasielastic (CCQE) events. topology such signal events has final state one electron, proton, and zero mesons (1e1p). Multiple novel techniques are employed to identify 1e1p state, including particle identification use two methods Deep-Learning-based image...
We report a measurement of the energy-dependent total charged-current cross section σ(E_{ν}) for inclusive muon neutrinos scattering on argon, as well measurements flux-averaged differential sections function energy and hadronic transfer (ν). Data corresponding to 5.3×10^{19} protons target exposure were collected using MicroBooNE liquid argon time projection chamber located in Fermilab booster neutrino beam with mean approximately 0.8 GeV. The mapping between true E_{ν} reconstructed...
We report a search for an anomalous excess of inclusive charged-current (CC) νe interactions using the Wire-Cell event reconstruction package in MicroBooNE experiment, which is motivated by previous observation low-energy (LEE) electromagnetic events from MiniBooNE experiment. With single liquid argon time projection chamber detector, measurements νμ CC as well π0 are used to constrain signal and background predictions interactions. A data set collected February 2016 July 2018 corresponding...
Abstract Primary challenges for current and future precision neutrino experiments using liquid argon time projection chambers (LArTPCs) include understanding detector effects quantifying the associated systematic uncertainties. This paper presents a novel technique assessing propagating LArTPC detector-related The makes modifications to simulation waveforms based on parameterization of observed differences in ionization signals from TPC between data simulation, while remaining insensitive...
We report on the first measurement of flux-integrated single differential cross sections for charged-current (CC) muon neutrino (ν_{μ}) scattering argon with a and proton in final state, ^{40}Ar (ν_{μ},μp)X. The was carried out using Booster Neutrino Beam at Fermi National Accelerator Laboratory MicroBooNE liquid time projection chamber detector an exposure 4.59×10^{19} protons target. Events are selected to enhance contribution CC quasielastic (CCQE) interactions. data reported terms total...