131 citations · 835 across the 36 of their papers we have counts for
12 papers · 1 filter
Second gadolinium loading to Super-Kamiokande
K. Abe, C. Bronner, Y. Hayato +246
The first loading of gadolinium (Gd) into Super-Kamiokande in 2020 was successful, and the neutron capture efficiency on Gd reached 50\%. To further increase the Gd neutron capture…
Development of a low-background HPGe detector at Kamioka Observatory
K. Ichimura, H. Ikeda, Y. Kishimoto +9
A new ultra-low background high-purity germanium (HPGe) detector has been installed at the Kamioka underground experimental site. The background count rate in the energy range from…
Rapid Analysis of in Ultrapure Gadolinium Sulfate Octahydrate
Y. Sakakieda, K. Hosokawa, F. Nakanishi +6
Numerous particle physics experiments utilize gadolinium (Gd), a rare earth element with the most significant neutron capture cross-section among all elements, to detect anti-neutr…
Development of Ultra-pure Gadolinium Sulfate for the Super-Kamiokande Gadolinium Project
K. Hosokawa, M. Ikeda, T. Okada +20
This paper reports the development and detailed properties of about 13 tons of gadolinium sulfate octahydrate, , which has been dissolved into…
The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment
Zen collaboration, Y. Gando, A. Gando +70
The KamLAND-Zen 800 experiment is searching for the neutrinoless double-beta decay of Xe by using Xe-loaded liquid scintillator. The liquid scintillator is enclosed…
Measurement of ambient neutrons in an underground laboratory at Kamioka Observatory and future plan
Keita Mizukoshi, Ryosuke Taishaku, Keishi Hosokawa +7
Ambient neutrons are one of the most serious backgrounds for underground experiments in search of rare events. The ambient neutron flux in an underground laboratory of Kamioka Obse…
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…
Measurement of ambient neutrons in an underground laboratory at Kamioka Observatory
Keita Mizukoshi, Ryosuke Taishaku, Keishi Hosokawa +8
Ambient neutrons are one of the most serious backgrounds for underground experiments searching for rare events. The ambient neutron flux in an underground laboratory of Kamioka Obs…
Identification of Pb and Po in the bulk of copper samples with a low-background alpha particle counter
XMASS collaboration, K. Abe, K. Hiraide +39
We established a method to assay Pb and Po contaminations in the bulk of copper samples using a low-background alpha particle counter. The achieved sensitivity for…
A measurement of the time profile of scintillation induced by low energy gamma-rays in liquid xenon with the XMASS-I detector
XMASS Collaboration, H. Takiya, K. Abe +36
We report the measurement of the emission time profile of scintillation from gamma-ray induced events in the XMASS-I 832 kg liquid xenon scintillation detector. Decay time constant…
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.…
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…