A5011692142- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Quantum, superfluid, helium dynamics
- Particle physics theoretical and experimental studies
- Nuclear Physics and Applications
- Cosmology and Gravitation Theories
- Cold Atom Physics and Bose-Einstein Condensates
- Computational Physics and Python Applications
- Scientific Research and Discoveries
- Magnetic Field Sensors Techniques
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- Physics of Superconductivity and Magnetism
- High-Energy Particle Collisions Research
- Biosensors and Analytical Detection
- Wood and Agarwood Research
- Nuclear reactor physics and engineering
- Astronomical Observations and Instrumentation
- Spectroscopy Techniques in Biomedical and Chemical Research
- Ion-surface interactions and analysis
- Superconducting Materials and Applications
- Identification and Quantification in Food
- Forensic Fingerprint Detection Methods
- Astrophysics and Cosmic Phenomena
University of Alberta
2025
Institute for Basic Science
2012-2024
Chungnam National University
2024
Cyclotron (Netherlands)
2001
Yonsei University
2000-2001
We report an axion dark matter search at Dine-Fischler-Srednicki-Zhitnitskii sensitivity with the CAPP-12TB haloscope, assuming axions contribute 100% of local density. The excluded axion-photon coupling g_{aγγ} down to about 6.2×10^{-16} GeV^{-1} over mass range between 4.51 and 4.59 μeV a 90% confidence level. achieved experimental can also exclude Kim-Shifman-Vainshtein-Zakharov that makes up just 13% haloscope will continue wide masses.
Abstract Ultralight bosons such as axion-like particles are viable candidates for dark matter. They can form stable, macroscopic field configurations in the of topological defects that could concentrate matter density into many distinct, compact spatial regions small compared with Galaxy but much larger than Earth. Here we report results search transient signals from domain walls by using global network optical magnetometers exotic (GNOME) physics searches. We data, consisting correlated...
We report an extensive high-sensitivity search for axion dark matter above 1 GHz at the Center Axion and Precision Physics Research (CAPP). The cavity resonant search, exploiting coupling between axions photons, explored frequency (mass) range of 1.025 (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>4.24</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi mathvariant="normal">μ</a:mi><a:mi>eV</a:mi></a:mrow></a:math>) to 1.185 (<d:math...
Non-destructive color sensors are widely applied for rapid analysis of various biological and healthcare point-of-care applications.
Nambu-Goldstone bosons, or axions, may be ubiquitous. Some of the axions have small masses and thus serve as mediators long-range forces. In this paper, we study force mediated by an extremely light axion, $\phi$, between visible sector dark sector, where matter lives. Since nature does not preserve CP symmetry, coupling $\phi$ is generically CP-violating. case, induced behaves effective magnetic field. If acts on electrons nucleons, spins them Earth precess around a fixed direction towards...
Abstract Numerous observations suggest that there exist undiscovered beyond‐the‐standard‐model particles and fields. Because of their unknown nature, these exotic fields could interact with standard model in many different ways assume a variety possible configurations. Here, an overview the global network optical magnetometers for physics searches (GNOME), ongoing experimental program designed to test wide range scenarios, is presented. The GNOME experiment utilizes worldwide shielded atomic...
We report an extensive high-sensitivity search for axion dark matter above 1\,GHz at the Center Axion and Precision Physics Research (CAPP). The cavity resonant search, exploiting coupling between axions photons, explored frequency (mass) range of 1.025\,GHz (4.24\,$\mu$eV) to 1.185\,GHz (4.91\,$\mu$eV). have introduced a number innovations in this field, demonstrating practical approach optimizing all relevant parameters haloscopes, extending presently available technology. CAPP 12\,T...
Abstract Weave and drainage marks on paper surfaces derived from forming fabrics installed in machines were examined. Non-destructive differentiation of copy papers various manufacturers was performed by a 2D Lab Formation Sensor. Individual characteristics such as angles wavelengths formed the fabric selected parameters for analysis. These sampled total 500 papers: 50 sheets each 10 groups manufacturers. Using machine learning algorithms partial least squares discriminant analysis (PLS-DA),...
Abstract Results are reported from the first full-scale search for transient signals exotic fields of astrophysical origin using data a newly constructed Earth-scale detector: Global Network Optical Magnetometers Exotic physics searches (GNOME). Data collected by GNOME consist correlated measurements optical atomic magnetometers located in laboratories all over world. searched patterns propagating through network consistent with composed ultralight bosons such as axion-like particles (ALPs)....
We report the first search for Sagittarius tidal stream of axion dark matter around $4.55\text{ }\text{ }\mathrm{\ensuremath{\mu}eV}$ using CAPP-12 TB haloscope data acquired in March 2022. Our result excluded Dine-Fischler-Srednicki-Zhitnitskii and Kim-Shifman-Vainshtein-Zakharov densities ${\ensuremath{\rho}}_{a}\ensuremath{\gtrsim}0.184$ $\ensuremath{\gtrsim}0.025\text{ }\mathrm{GeV}/{\mathrm{cm}}^{3}$, respectively, over a mass range from 4.51 to $4.59\text{ at 90% confidence level.
Construction and test results of a 100-mm-bore solenoid made with the high-temperature superconductor (HTS) producing peak field over 10 T are presented. This is first step toward building very high (35–40 T)—one key components proposed state-of-the-art facility for dark matter search at Center Axion Precision Physics Research, Institute Basic Science in Korea. The coils HTS expected to provide ∼25 T, low-temperature superconductors 10–15 T. REBCO tapes were provided by SuNAM along...
We applied an effective approximation into Maxwell's equations with axion interaction for haloscope searches. A set of acquired from this describes just the reacted fields generated by anomalous interaction. Unlike other approaches, inherently satisfies boundary conditions The electromagnetic field solutions were evaluated both cylindrical and toroidal cavity geometries including when mass becomes ultra-light (sub-meV). small but non-zero difference between electric magnetic stored energies...
We report an axion dark matter search at Dine-Fischler-Srednicki-Zhitnitskii sensitivity with the CAPP-12TB haloscope, assuming axions contribute 100\% of local density. The excluded axion--photon coupling $g_{aγγ}$ down to about $6.2\times10^{-16}$ GeV$^{-1}$ over mass range between 4.51 and 4.59 $μ$eV a 90\% confidence level. achieved experimental can also exclude Kim-Shifman-Vainshtein-Zakharov that makes up just 13\% haloscope will continue wide masses.
The QCD Axion is a particle postulated to exist since the 1970s explain Strong-CP problem in physics. It could also account for all of observed Dark Matter universe. Resonant InterAction DetectioN Experiment (ARIADNE) experiment intends detect axion by sensing fictitious "magnetic field" created its coupling spin. must be sensitive magnetic fields below $10^{-19}$ T level achieve design sensitivity, necessitating tight control experiment's environment. We describe method controlling three...