A5030124809- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Medical Imaging Techniques and Applications
- Superconducting and THz Device Technology
- Solid-state spectroscopy and crystallography
- Advanced Semiconductor Detectors and Materials
- Nuclear physics research studies
- Radioactivity and Radon Measurements
- Geophysical Methods and Applications
- Electron and X-Ray Spectroscopy Techniques
- Antenna Design and Analysis
- Superconducting Materials and Applications
- thermodynamics and calorimetric analyses
- Radiation Effects in Electronics
- Luminescence Properties of Advanced Materials
- Muon and positron interactions and applications
- Radioactive contamination and transfer
- Advanced Condensed Matter Physics
Institute for Basic Science
2014-2025
Kyungpook National University
2007-2022
Korea Research Institute of Standards and Science
2014-2017
Sejong University
2008
Tsinghua University
2008
Ewha Womans University
2008
Seoul National University
2008
New limits are presented on the cross section for weakly interacting massive particle (WIMP) nucleon scattering in KIMS $\mathrm{CsI}(\mathrm{T}\ensuremath{\ell})$ detector array at Yangyang Underground Laboratory. The exposure used these results is $24\text{ }524.3\text{ }\text{ }\mathrm{kg}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{days}$. Nuclei recoiling from WIMP interactions identified by a pulse shape discrimination method. A low energy background due to alpha emitters crystal...
Abstract AMoRE-II aims to search for neutrinoless double beta decay ( $$0\nu \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>0</mml:mn> <mml:mi>ν</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:math> ) with an array of 423 $$\hbox {Li}_2^{100}\hbox {MoO}_4$$ <mml:msubsup> <mml:mtext>Li</mml:mtext> <mml:mn>2</mml:mn> <mml:mn>100</mml:mn> </mml:msubsup> <mml:msub> <mml:mtext>MoO</mml:mtext> <mml:mn>4</mml:mn> </mml:msub> crystals operating in the cryogenic...
We developed a cryogenic phonon-scintillation detector to search for 0νββ decay of 100Mo. The module, proto-type setup the AMoRE experiment, has scintillating 40Ca100MoO4 absorber composed 100Mo-enriched and 48Ca-depleted elements. This new detection method employs metallic magnetic calorimeters (MMCs) as sensor technology simultaneous heat light signals. It is designed have high energy timing resolutions increase sensitivity probe rare event. detector, which 200 g crystal phonon/photon...
AMoRE is an international project to search for the neutrinoless double beta decay of $^{100}$Mo using a detection technology consisting magnetic microcalorimeters (MMCs) and molybdenum-based scintillating crystals. Data collection has begun current AMORE-I phase project, upgrade from previous pilot phase. AMoRE-I employs thirteen $^\mathrm{48depl.}$Ca$^{100}$MoO$_4$ crystals five Li$_2$$^{100}$MoO$_4$ total crystal mass 6.2 kg. Each detector module contains with two MMC channels heat light...
The AMoRE-II experiment will search for the 0 νββ decay of 100 Mo nuclei using molybdate crystal scintillators, operating at milli-Kelvin (mK) temperatures, with a total 80 kg Mo. background goal is 10 –4 counts/keV/kg/year in region interest around Q-value 3,034 keV. To achieve this level, rate signals arising from emissions produced by decays radioactive impurities detector and shielding materials must be strictly controlled. do this, concentrations such are measured controlled through...
Abstract The AMoRE collaboration searches for neutrinoless double beta decay of $$^{100}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>100</mml:mn> </mml:mmultiscripts> </mml:math> Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. early phases the experiment, AMoRE-pilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, AMoRE-II featuring a large detector array with...
AMoRE searches for the neutrinoless double beta decay using 100 kg of enriched Mo100. Scintillating molybdate crystals coupled with a metallic magnetic calorimeter operate at milli-Kelvin temperatures to measure energy electrons emitted in decay. AMoRE-I is demonstrator full-scale AMoRE, operated Yangyang Underground Laboratory over two years. The exposure was 8.02 year (or 3.89 kgMo100 year), and total background rate near Q value 0.025±0.002 counts/keV/kg/year. We observed no indication...
AMoRE (Advanced Mo based Rare process Experiment) collaboration is going to use calcium molybdate crystals as cryogenic scintillation detector in a search for neutrinoless DBD of 100Mo isotope. Simultaneous detection phonons and light will be used reject internal background. A FWHM resolution 0.2% the phonon channel has been achieved with 0.5 cm3 crystal. Several 40Ca100MoO4 (≈ kg) have developed from enriched depleted 40Ca materials. The yield these shown comparable reference CaMoO4...
The Korea Invisible Mass Search (KIMS) collaboration has developed low-background NaI(Tl) crystals that are suitable for the direct detection of WIMP dark matter. Building on experience accumulated during KIMS-CsI programs, KIMS-NaI experiment will consist a 200 kg crystal array surrounded by layers shielding structures and be operated at Yangyang underground laboratory. goal is to provide an unambiguous test DAMA/LIBRA annual modulation signature. Measurements six prototype show progress in...
We report the development of a CaMoO4 crystal low temperature detector for AMoRE neutrinoless double beta decay (0{\nu}\b{eta}\b{eta}) search experiment. The prototype cell was composed 216 g and metallic magnetic calorimeter. An over-ground measurement demonstrated FWHM resolution 6-11 keV full absorption gamma peaks. Pulse shape discrimination clearly in phonon signals, 7.6 {\sigma} power found {\alpha} \b{eta}/{\gamma} separation. signals showed rise-times about 1 ms. It is expected that...
Metallic magnetic calorimeters (MMCs) are highly sensitive temperature sensors that use the paramagnetic nature of erbium in a metallic host and superconducting electronics usually composed niobium coil current sensing quantum interference device. This article discusses applicability MMCs experimental searches for rare events particle physics. A detector module using two was built to perform low-temperature measurements heat scintillation light generated by interaction 340 g 40Ca100MoO4...
The AMoRE (Advanced Mo-based Rare process Experiment) project is a series of experiments that use advanced cryogenic techniques to search for the neutrinoless double-beta decay \mohundred. work being carried out by an international collaboration researchers from eight countries. These searches involve high precision measurements radiation-induced temperature changes and scintillation light produced in ultra-pure \Mo[100]-enriched \Ca[48]-depleted calcium molybdate...
Metallic magnetic calorimeters (MMCs) are highly sensitive temperature sensors that operate at millikelvin temperatures. An energy deposit in a detector can be measured using an MMC through the induced increase. The signal, i.e., variation magnetization then superconducting quantum interference device. MMCs used particle physics experiments searching for rare processes as their high sensitivity and fast response provide timing resolutions good discrimination. Low-temperature detectors...
Abstract The AMoRE collaboration is preparing for the second phase of experiment, AMoRE-II, which will exploit a 100 kg Mo isotopes to search neutrinoless double beta decay from isotope. Most be contained in lithium molybdate (Li 2 MoO 4 ) crystals, act as absorbers cryogenic calorimeters coupled MMC (metallic magnetic calorimeter) sensors. detector array have total mass approximately 200 with hundreds modules. Hence, considerable effort has been taken optimize crystal terms performance and...
We report on the response of a high light-output NaI(Tl) crystal to nuclear recoils induced by neutrons from an Am-Be source and compare results with electron produced Compton scattered 662 keV $\gamma$-rays $^{137}$Cs source. The measured pulse-shape discrimination (PSD) power is found be significantly improved because light output detector. quantify PSD quality factor estimate sensitivity interaction rate for weakly interacting massive particles (WIMPs) nucleons, result compared annual...