A5028898221- 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
- Distributed and Parallel Computing Systems
- Nuclear Physics and Applications
- Pulsars and Gravitational Waves Research
- Scientific Computing and Data Management
- Particle Accelerators and Free-Electron Lasers
- Climate Change Communication and Perception
- Quantum, superfluid, helium dynamics
- Muon and positron interactions and applications
- Cold Atom Physics and Bose-Einstein Condensates
- Environmental Monitoring and Data Management
- Cloud Computing and Resource Management
- Computational Physics and Python Applications
- Service-Learning and Community Engagement
- solar cell performance optimization
- 3D IC and TSV technologies
- CCD and CMOS Imaging Sensors
- Solid State Laser Technologies
- Superconducting Materials and Applications
Fermi National Accelerator Laboratory
2020-2024
Indiana University Bloomington
2016-2023
The University of Texas at Austin
2019-2022
The University of Texas at Arlington
2018-2020
Ibero American University
2012
Convolutional neural networks (CNNs) have been widely applied in the computer vision community to solve complex problems image recognition and analysis. We describe an application of CNN technology problem identifying particle interactions sampling calorimeters used commonly high energy physics neutrino particular. Following a discussion core concepts CNNs recent innovations architectures related field deep learning, we outline specific NOvA detector. This algorithm, CVN (Convolutional...
A bstract Excellent energy resolution is one of the primary advantages electroluminescent high-pressure xenon TPCs. These detectors are promising tools in searching for rare physics events, such as neutrinoless double-beta decay ( ββ 0 ν ), which require precise measurements. Using NEXT-White detector, developed by NEXT (Neutrino Experiment with a Xenon TPC) collaboration, we show first time that an 1% FWHM can be achieved at 2.6 MeV, establishing present technology best all searches.
Searches for neutrinoless double-beta decay continue to expand our understanding of the lepton sector, with experiments now pursuing ton-scale target masses sensitivity $m_{\beta\beta}$ covering allowed parameter space inverted neutrino mass ordering. Continued searches this rare will require scalable detector technologies achieve significant increases in beyond ton scale, order probe normal ordering region. This work explores concept searching a 10 kton scale liquid argon time projection...
Particle detectors record the interactions of subatomic particles and their passage through matter. The identification these is necessary for in-depth physics analysis. While can be identified by individual behavior as they travel matter, full context interaction in which are produced aid classification task substantially. We have developed first convolutional neural network particle uses information. This also implementation a four-tower siamese-type architecture both separation independent...
A bstract The measurement of the internal 222 Rn activity in NEXT-White detector during so-called Run-II period with 136 Xe-depleted xenon is discussed detail, together its implications for double beta decay searches NEXT. measured through alpha production rate induced fiducial volume by and alpha-emitting progeny. specific to be (38.1 ± 2.2 (stat.) 5.9 (syst.)) mBq/m 3 . Radon-induced electrons have also been characterized from 214 Bi daughter ions plating out on cathode time projection...
One of the major goals NEXT-White (NEW) detector is to demonstrate energy resolution that an electroluminescent high pressure xenon TPC can achieve for tracks. For this purpose, calibrations with 137Cs and 232Th sources have been carried out as a part long run taken during most 2017. This paper describes initial results obtained those calibrations, showing excellent linearity extrapolates approximately 1% FWHM at Qββ.
A bstract Natural radioactivity represents one of the main backgrounds in search for neutrinoless double beta decay. Within NEXT physics program, radioactivity- induced are measured with NEXT-White detector. Data from 37.9 days low-background operations at Laboratorio Subterráneo de Canfranc xenon depleted 136 Xe analyzed to derive a total background rate (0.84 ± 0.02) mHz above 1000 keV. The comparison data samples and without use radon abatement system demonstrates that contribution...
A bstract The NEXT experiment aims at searching for the hypothetical neutrinoless double-beta decay from 136 Xe isotope using a high-purity xenon TPC. Efficient discrimination of events through pattern recognition topology primary ionisation tracks is major requirement experiment. However, it limited by diffusion electrons. It known that addition small fraction molecular gas to reduces electron diffusion. On other hand, electroluminescence (EL) yield drops and achievable energy resolution...
High pressure gas time projection chambers (HPGTPCs) are made with a variety of materials, many which still await proper characterization in high noble environments. As HPGTPCs increase size toward ton-scale detectors, assemblies become larger and more complex, creating need for detailed understanding how structural supports voltage insulators behave. This includes identification materials predictable mechanical properties without surface charge accumulation that may lead to field...
We present a new neutrinoless double beta decay concept: the high pressure selenium hexafluoride gas time projection chamber. A promising detection technique is outlined which combines techniques pioneered in xenon gas, such as topological discrimination, with Q-value afforded by isotope 82Se. The lack of free electrons SeF6 mandates use an ion TPC. microphysics production and drift, have many nuances, are explored. Background estimates presented, suggesting that detector may achieve...
A bstract In experiments searching for neutrinoless double-beta decay, the possibility of identifying two emitted electrons is a powerful tool in rejecting background events and therefore improving overall sensitivity experiment. this paper we present first measurement efficiency cut based on different event signatures double single electron tracks, using data NEXT-White detector, detector NEXT experiment operating underground. Using 228 Th calibration source to produce signal-like...
In liquid argon time projection chambers exposed to neutrino beams and running on or near surface levels, cosmic muons, other particles are incident the detectors while a single neutrino-induced event is being recorded. practice, this means that data from will be dominated by particles, both as source of triggers majority particle count in true neutrino-triggered events. work, we demonstrate novel application deep learning techniques remove these background applying full detector images SBND...
A bstract High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and beta decay detection. The discrimination of the through topological signature primary ionisation trails is a major asset this type TPC when compared to single liquid or double-phase TPCs, limited mainly by high diffusion in pure xenon. Helium admixtures...
The measurement of the internal $^{222}$Rn activity in NEXT-White detector during so-called Run-II period with $^{136}$Xe-depleted xenon is discussed detail, together its implications for double beta decay searches NEXT. measured through alpha production rate induced fiducial volume by and alpha-emitting progeny. specific to be $(38.1\pm 2.2~\mathrm{(stat.)}\pm 5.9~\mathrm{(syst.)})$~mBq/m$^3$. Radon-induced electrons have also been characterized from $^{214}$Bi daughter ions plating out on...
In liquid argon time projection chambers exposed to neutrino beams and running on or near surface levels, cosmic muons other particles are incident the detectors while a single neutrino-induced event is being recorded. practice, this means that data from will be dominated by particles, both as source of triggers majority particle count in true neutrino-triggered events. work, we demonstrate novel application deep learning techniques remove these background applying semantic segmentation full...
The rapid evolution of technology and the parallel increasing complexity algorithmic analysis in HEP requires developers to acquire a much larger portfolio programming skills. Young researchers graduating from universities worldwide currently do not receive adequate preparation very diverse fields modern computing respond growing needs most advanced experimental challenges. There is consensus community on need for training programmes bring up date with new software technologies, particular...
High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and beta decay detection. The discrimination of the through topological signature primary ionisation trails is a major asset this type TPC when compared to single liquid or double-phase TPCs, limited mainly by high diffusion in pure xenon. Helium admixtures with can...
LArTPCs are the technology of choice for current and future neutrino experiments, including those expected to make eagerly awaited measurements accelerator oscillations in coming decade. This provides a large active volume sensitivity GeV signals like neutrinos all way down 10s MeV, covering part supernova spectrum.Expanding reach below 10 MeV range would substantially enhance flagship analyses experiments DUNE, while potentially enabling physics solar neutrinos, dark matter searches,...
TinyTPC is a small scale liquid-argon time projection chamber (LArTPC) featuring pixelated readout system (LArPix) designed to improve the detection of charged particles. To enhance energy measurements at MeV scales, will study impact isobutylene, photosensitive dopant that converts light charge, and xenon, wavelength shifter. This presentation detail TinyTPC's commissioning, operation, data collection methodologies, noise levels, upcoming tests involving radioactive sources.
LArTPCs provide sensitivity to GeV signals, such as accelerator neutrinos and part of the supernova neutrino spectrum. TinyTPC is a LArTPC test stand for R&D LAr doping expand reach down 1-10 MeV range, which would substantially enhance flagship analyses experiments like DUNE, while enabling low energy analyses. We aim dope with Xe pho- tosensitive dopants range by converting hard-to-detect scintillation light efficiently detected ionization charge. A critical element data analysis in...
The NOvA experiment observes oscillations in two channels (electron-neutrino appearance and muon-neutrino disappearance) using a predominantly NuMI beam. Near Detector records multiple overlapping neutrino interactions each event the Far has large background of cosmic rays due to being located on surface. oscillation analyses rely accurate reconstruction order precisely measure energy identify flavor interaction mode. Similarly, measurements cross sections require identification particle...