Measurement of the radon concentration in purified water in the Super-Kamiokande IV detector

@article{Nakano2020MeasurementOT,
  title={Measurement of the radon concentration in purified water in the Super-Kamiokande IV detector},
  author={Yuuki Nakano and Tomonori Hokama and M. Matsubara and M. Miwa and Masayuki Nakahata and Tohru Nakamura and Hiroyuki Sekiya and Yuji Takeuchi and Shigeki Tasaka and R. A. Wendell},
  journal={Nuclear Instruments \& Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment},
  year={2020},
  volume={977},
  pages={164297}
}
  • Y. Nakano, T. Hokama, +7 authors R. Wendell
  • Published 9 October 2019
  • Physics
  • Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
Abstract The radioactive noble gas radon can be a serious background source in the underground particle physics experiments studying processes that deposit energy comparable to its decay products. Low energy solar neutrino measurements at Super-Kamiokande suffer from these backgrounds and therefore require precise characterization of the radon concentration in the detector’s ultra-pure water. For this purpose, we have developed a measurement system consisting of a radon extraction column, a… Expand
Study on the radon removal performance of low background activated carbon
Radon and radon daughters pose significant backgrounds to rare-event searching experiments. Activated carbon has very strong adsorption capacity for radon, while the internal Ra concentrationExpand
Exciting prospects for detecting late-time neutrinos from core-collapse supernovae
In this theoretical study of successful core-collapse supernovae, the authors provide a detailed model of neutrino emission from the different phases of the transition - explosion to proto-neutronExpand
First Gadolinium Loading to Super-Kamiokande
In order to improve Super-Kamiokande’s neutron detection efficiency and to thereby increase its sensitivity to the diffuse supernova neutrino background flux, 13 tons of Gd2(SO4)3 · 8H2O (gadoliniumExpand
Low energy radioactivity BG model in Super-Kamiokande detector from SK-IV data
  • G. Pronost, K. Abe, +197 authors R. Sasaki
  • Physics
  • Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)
  • 2021
The radioactivity background are among the most dangerous background for low energy neutrino analysis in Super-Kamiokande (SK), like the solar neutrino analysis. Among them, the main contribution isExpand
Radioactivity control strategy for the JUNO detector
Abstract JUNO is a massive liquid scintillator detector with a primary scientific goal of determining the neutrino mass ordering by studying the oscillated anti-neutrino flux coming from two nuclearExpand
Search for Neutrinos in Coincidence with Gravitational Wave Events from the LIGO–Virgo O3a Observing Run with the Super-Kamiokande Detector
The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO–Virgo Collaboration (LVC). Both low-energy (7–100 MeV) andExpand
Reactor antineutrino oscillations at Super-Kamiokande
Abstract SuperKamiokande (SK) doped with gadolinium has the capability to efficiently identify electron-antineutrinos through inverse beta-decay. Given the size of SK and the number of nuclearExpand

References

SHOWING 1-10 OF 86 REFERENCES
Measurement of Radon Concentration in Super-Kamiokande's Buffer Gas
Abstract To precisely measure radon concentrations in purified air supplied to the Super-Kamiokande detector as a buffer gas, we have developed a highly sensitive radon detector with an intrinsicExpand
Radon background study in Super-Kamiokande
Super-Kamiokande (SK), a 50 kton water Cherenkov detector in Japan, observes 8B solar neutrinos with neutrino-electron elastic scattering. SK searches for distortions of the solar neutrino energyExpand
The radon monitoring system in Daya Bay Reactor Neutrino Experiment
Abstract We developed a highly sensitive, reliable and portable automatic system (H 3 ) to monitor the radon concentration of the underground experimental halls of the Daya Bay Reactor NeutrinoExpand
Measurement of 222Rn dissolved in water at the Sudbury Neutrino Observatory
The technique used at the Sudbury Neutrino Observatory (SNO) to measure the concentration of in water is described. Water from the SNO detector is passed through a vacuum degasser (in the light waterExpand
Development of super-high sensitivity radon detector for the Super-Kamiokande detector
Abstract A super-high sensitivity radon detector for water which works as a real-time monitor of the radon concentration in water for the Super-Kamiokande detector was developed. Super-highExpand
The water purification system for the low background counting test facility of the Borexino experiment at Gran Sasso
The Borexino experiment, for the study of solar neutrino physics, requires radiopurity at the level of 5 × 10−16 g/g 238U equivalent (or 6 × 10−9 Bq/kg) on a detector mass of many tons ofExpand
Developing the radium measurement system for JUNO's water Cherenkov detector
The Jiangmen Underground Neutrino Observatory(JUNO) is proposed to determine neutrino mass hierarchy using a 20~kton liquid scintillator detector. Strict radio-purity requirements have been putExpand
Development of high sensitivity radon detectors
High sensitivity detectors for radon in air and in water have been developed. We use electrostatic collection and a PIN photodiode for these detectors. Calibration systems have been also constructedExpand
Determination of Radon Concentration in Water Using Liquid Scintillation Counter
It has been confirmed that, in the measurement of radon-in-water using liquid scintillation counting, the direct method is preferred to the extraction method, since the former is simple technique.Expand
Quest for the lowest-energy neutrinos in Super-Kamiokande
Super-Kamiokande (SK) has been observing 8B solar neutrinos for 17 years. Since the start of the SK-III phase, much effort has been expended in reducing backgrounds. The main contributing backgroundExpand
...
1
2
3
4
5
...