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Status and performance of the AMoRE-I experiment on neutrinoless double beta decay
H. B. Kim, D. H. Ha, E. J. Jeon +32
AMoRE is an international project to search for the neutrinoless double beta decay of Mo using a detection technology consisting of magnetic microcalorimeters (MMCs) and mo…
Pulse shape discrimination using a convolutional neural network for organic liquid scintillator signals
K. Y. Jung, B. Y. Han, E. J. Jeon +17
A convolutional neural network (CNN) architecture is developed to improve the pulse shape discrimination (PSD) power of the gadolinium-loaded organic liquid scintillation detector…
Radon concentration variations at the Yangyang underground laboratory
C. Ha, Y. Jeong, W. G. Kang +9
The concentration of radon in the air has been measured in the 700 m-deep Yangyang underground laboratory between October 2004 and May 2022. The average concentrations in two exper…
IsoDAR@Yemilab: A Conceptual Design Report for the Deployment of the Isotope Decay-At-Rest Experiment in Korea's New Underground Laboratory, Yemilab
J. R. Alonso, K. M. Bang, R. Barlow +12
This Conceptual Design Report addresses the site-specific issues associated with the deployment of the IsoDAR experiment at the Yemilab site. IsoDAR@Yemilab pairs the IsoDAR cyclot…
Pulse Shape Discrimination of Fast Neutron Background using Convolutional Neural Network for NEOS II
NEOS II Collaboration, Y. Jeong, B. Y. Han +19
Pulse shape discrimination plays a key role in improving the signal-to-background ratio in NEOS analysis by removing fast neutrons. Identifying particles by looking at the tail of…
Development of an array of HPGe detectors with 980% relative efficiency
D. S. Leonard, I. S. Hahn, W. G. Kang +7
Searches for new physics push experiments to look for increasingly rare interactions. As a result, detectors require increasing sensitivity and specificity, and materials must be s…
Improving the light collection using a new NaI(Tl)crystal encapsulation
J. J. Choi, B. J. Park, C. Ha +7
NaI(Tl) crystals are used as particle detectors in a variety of rare-event search experiments because of their superb light-emission quality. The crystal light yield is generally h…
The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs
D. S. Akerib, C. W. Akerlof, D. Yu. Akimov +387
LUX-ZEPLIN (LZ) is a second-generation direct dark matter experiment with spin-independent WIMP-nucleon scattering sensitivity above cm for a WIMP mass…
Development of ultra-pure NaI(Tl) detectors for the COSINE-200 experiment
B. J. Park, J. J. Choe, J. S. Choi +17
The annual modulation signal observed by the DAMA experiment is a long-standing question in the community of dark matter direct detection. This necessitates an independent verifica…
Depth profile study of Pb in the surface of an NaI(Tl) crystal
G. H. Yu, C. Ha, E. J. Jeon +6
The surface Pb is one of the main background sources for dark-matter-search experiments using NaI(Tl) crystals, and its spectral features associated with the beta-decay eve…
Quenching factor measurement for NaI(Tl) scintillation crystal
H. W. Joo, H. S. Park, J. H. Kim +4
Scintillation crystals are commonly used for direct detection of weakly interacting massive particles (WIMPs), which are suitable candidates for a particle dark matter. It is well…
A measurement of the scintillation decay time constant of nuclear recoils in liquid xenon with the XMASS-I detector
XMASS Collaboration, K. Abe, K. Hiraide +35
We report an in-situ measurement of the nuclear recoil (NR) scintillation decay time constant in liquid xenon (LXe) using the XMASS-I detector at the Kamioka underground laboratory…
Development of low radioactivity photomultiplier tubes for the XMASS-I detector
XMASS Collaboration, K. Abe, K. Hiraide +39
XMASS-I is a single-phase liquid xenon detector whose purpose is direct detection of dark matter. To achieve the low background requirements necessary in the detector, a new model…
The COSINE-100 Data Acquisition System
100 Collaboration, G. Adhikari, P. Adhikari +44
COSINE-100 is a dark matter direct detection experiment designed to test the annual modulation signal observed by the DAMA/LIBRA experiment. COSINE-100 consists of 8 NaI(Tl) crysta…
LUX-ZEPLIN (LZ) Technical Design Report
B. J. Mount, S. Hans, R. Rosero +259
In this Technical Design Report (TDR) we describe the LZ detector to be built at the Sanford Underground Research Facility (SURF). The LZ dark matter experiment is designed to achi…
Measurement of Fast Neutron Rate for NEOS Experiment
Y. J. Ko, J. Y. Kim, B. Y. Han +17
The fast neutron rate is measured at the site of NEOS experiment, a short baseline neutrino experiment located in a tendon gallery of a commercial nuclear power plant, using a 0.78…
Detectability of galactic supernova neutrinos coherently scattered on xenon nuclei in XMASS
XMASS Collaboration
The coherent elastic neutrino-nucleus scattering (CEvNS) plays a crucial role at the final evolution of stars. The detection of it would be of importance in astroparticle physics.…
A CaMoO4 Crystal Low Temperature Detector for the AMoRE Neutrinoless Double Beta Decay Search
G. B. Kim, S. Choi, F. A. Danevich +13
We report the development of a CaMoO4 crystal low temperature detector for the AMoRE neutrinoless double beta decay (0ν\b{eta}\b{eta}) search experiment. The prototype detector cel…
Technical Design Report for the AMoRE Decay Search Experiment
V. Alenkov, P. Aryal, J. Beyer +86
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 of…
Measurement of the quenching and channeling effects in a CsI crystal used for a WIMP search
J. H. Lee, G. B. Kim, I. S. Seong +25
We have studied channeling effects in a Cesium Iodide (CsI) crystal that is similar in composition to the ones being used in a search for Weakly Interacting Massive Particles (WIMP…
XMASS detector
K. Abe, K. Hieda, K. Hiraide +45
The XMASS project aims to detect dark matter, pp and Be solar neutrinos, and neutrinoless double beta decay using ultra pure liquid xenon. The first phase of the XMASS experi…
Scintillation-only Based Pulse Shape Discrimination for Nuclear and Electron Recoils in Liquid Xenon
K. Ueshima, K. Abe, K. Hiraide +34
In a dedicated test setup at the Kamioka Observatory we studied pulse shape discrimination (PSD) in liquid xenon (LXe) for dark matter searches. PSD in LXe was based on the observa…
Time and Amplitude of Afterpulse Measured with a Large Size Photomultiplier Tube
K. J. Ma, W. G. Kang, J. K. Ahn +21
We have studied the afterpulse of a hemispherical photomultiplier tube for an upcoming reactor neutrino experiment. The timing, the amplitude, and the rate of the afterpulse for a…
Distillation of Liquid Xenon to Remove Krypton
K. Abe, J. Hosaka, T. Iida +45
A high performance distillation system to remove krypton from xenon was constructed, and a purity level of Kr/Xe = was achieved. This development is crucia…