Author:
Liu Y.,Zhang Y.P.,Liu J.C.,Guo C.,Yang C.G.,Zhang P.,Tang Q.,Xu Z.F.,Li C.,Guan T.Y.,Wang S.B.
Abstract
Abstract
The Jiangmen Underground Neutrino Observatory (JUNO), a
20 kton multipurpose underground liquid scintillator detector, was
proposed for the determination of the neutrino mass hierarchy as
primary physics goal. The central detector will be submerged in a
water Cherenkov detector to lower the background from the
environment and cosmic muons. Radon is one of the primary background
sources. Nitrogen will be used in several sub-systems, and a highly
sensitive radon detector has to be developed to measure its radon
concentration. A system has been developed based on 222Rn
enrichment of activated carbon and 222Rn detection based on the
electrostatic collection. This paper presents the detail of a
μBq/m3 level 222Rn concentration measurement system
and gives detailed information about how the adsorption coefficient
was measured and how the temperature, flow rate, and 222Rn
concentration affect the adsorption coefficient.
Subject
Mathematical Physics,Instrumentation
Cited by
3 articles.
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1. Development of low-radon ultra-pure water for the Jiangmen Underground Neutrino Observatory;Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment;2024-06
2. Developing a μBq/m3 level 226Ra concentration in water measurement system for the Jiangmen Underground Neutrino Observatory;Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment;2024-06
3. Study on the radon adsorption capability of low-background activated carbon;Journal of Radioanalytical and Nuclear Chemistry;2023-11-01