R. Castillo Fernández
A5071226214- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Astrophysics 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
- Quantum Chromodynamics and Particle Interactions
- Effects and risks of endocrine disrupting chemicals
- Particle accelerators and beam dynamics
- Toxic Organic Pollutants Impact
- Microplastics and Plastic Pollution
- High-Energy Particle Collisions Research
- Robotics and Automated Systems
- Anomaly Detection Techniques and Applications
- Adversarial Robustness in Machine Learning
- IoT-based Smart Home Systems
- Environmental Toxicology and Ecotoxicology
- Nuclear physics research studies
- Computational Physics and Python Applications
- Spectroscopy and Laser Applications
- Analytical chemistry methods development
- IoT and Edge/Fog Computing
The University of Texas at Arlington
2024
Xunta de Galicia
2023-2024
Fermi National Accelerator Laboratory
2017-2022
Institute for High Energy Physics
2014
Boston University
1988
This paper describes the design and construction of MicroBooNE liquid argon time projection chamber associated systems. is first phase Short Baseline Neutrino program, located at Fermilab, will utilize capabilities detectors to examine a rich assortment physics topics. In this document details specifications, assembly procedures, acceptance tests are reported.
This paper introduces the neutrinoless double-beta decay (the rarest nuclear weak process) and describes status of research for this transition, both from point view theoretical physics in terms present future experimental scenarios. Implications phenomenon on crucial aspects particle are briefly discussed. The calculations matrix elements case mass mechanisms reviewed, a range these quantities is proposed most appealing candidates. After introducing general concepts—such as choice best...
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...
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...
We present several studies of convolutional neural networks applied to data coming from the MicroBooNE detector, a liquid argon time projection chamber (LArTPC). The algorithms studied include classification single particle images, localization and neutrino interactions in an image, detection simulated event overlaid with cosmic ray backgrounds taken real detector data. These demonstrate potential for identification or on interactions. also address technical issues that arise when applying...
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...
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,...
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...
The MicroBooNE liquid argon time projection chamber (LArTPC) has been taking data at Fermilab since 2015 collecting, in addition to neutrino beam, cosmic-ray muons. Results are presented on the reconstruction of Michel electrons produced by decay rest abundantly TPC, and given their well known energy spectrum can be used study MicroBooNE's detector response low-energy (electrons with energies up ~ 50 MeV). We describe fully-automated algorithm developed reconstruct electrons, which a sample...
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...
We present upper limits on the production of heavy neutral leptons (HNLs) decaying to μπ pairs using data collected with MicroBooNE liquid-argon time projection chamber (TPC) operating at Fermilab. This search is first its kind performed in a TPC. use 2017 and 2018 corresponding an exposure 2.0×1020 protons target from Fermilab Booster Neutrino Beam, which produces mainly muon neutrinos average energy ≈800 MeV. HNLs higher mass are expected have longer flight TPC than Standard Model...
We present a search for the decays of neutral scalar boson produced by kaons decaying at rest, in context Higgs portal model, using MicroBooNE detector. analyze data triggered time with Fermilab NuMI neutrino beam spill, an exposure 1.93×10^{20} protons on target. look monoenergetic scalars that come from direction hadron absorber, distance 100 m detector, and decay to electron-positron pairs. observe one candidate event, standard model background prediction 1.9±0.8. set upper limit...
We present the performance of a semantic segmentation network, sparsessnet, that provides pixel-level classification MicroBooNE data. The experiment employs liquid argon time projection chamber for study neutrino properties and interactions. sparsessnet is submanifold sparse convolutional neural which initial machine learning based algorithm utilized in one MicroBooNEs ${\ensuremath{\nu}}_{e}$-appearance oscillation analyses. network trained to categorize pixels into five classes, are...
The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples pions, muons, electrons, protons, and kaons momentum range 300-1400 MeV/c. This paper describes main aspects detector beamline, also reports on calibrations performed for beamline components.
Abstract An accurate and efficient event reconstruction is required to realize the full scientific capability of liquid argon time projection chambers (LArTPCs). The current future neutrino experiments that rely on massive LArTPCs create a need for new ideas approaches. Wire-Cell, proposed in recent years, novel tomographic method LArTPCs. Wire-Cell 3D imaging approach capitalizes charge, sparsity, time, geometry information reconstruct topology-agnostic image ionization electrons prior...
We present the multiple particle identification (MPID) network, a convolutional neural network for object classification, developed by MicroBooNE. MPID provides probabilities that an interaction includes ${e}^{\ensuremath{-}}$, $\ensuremath{\gamma}$, ${\ensuremath{\mu}}^{\ensuremath{-}}$, ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, and protons in liquid argon time projection chamber single readout plane. The extends previously MicroBooNE [Convolutional networks applied to neutrino...
We present a measurement of the combined ${\ensuremath{\nu}}_{e}+{\overline{\ensuremath{\nu}}}_{e}$ flux-averaged charged-current inclusive cross section on argon using data from MicroBooNE liquid time projection chamber (lartpc) at Fermilab. Using off-axis flux NuMI beam, has reconstructed 214 candidate interactions with an estimated exposure $2.4\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons target. Given purity 38.6%, this implies observation 80 events in argon, largest such sample...
We present the first measurement of single-differential $\nu_e + \bar{\nu}_e$ charged-current inclusive cross sections on argon in electron or positron energy and scattering cosine over full angular range. Data were collected using MicroBooNE liquid time projection chamber located off-axis from Fermilab Neutrinos at Main Injector beam an exposure $2.0\times10^{20}$ protons target. The signal definition includes a 60 MeV threshold $\nu_e$ $\bar{\nu}_e$ 120 energy. measured total differential...