23-27 May 2017
Seoul
Asia/Seoul timezone
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# Session 4

## Place

Location: Seoul
Date: 25 May 09:00 - 11:20

## Conveners

• Liquid and gas purification, including Rn control
• Poon, Alan (Berkeley Lab)
• Liquid and gas purification, including Rn control
• Poon, Alan (Berkeley Lab)

## Timetable | Contribution List

Displaying 6 contributions out of 6
Type: Oral Session: Session 4
The Lux-Zeplin (LZ) dark matter detector will be a dual-phase Xe TPC with a 5.6 tonne fiducial volume located at the Sanford Underground Research Facility. To reduce the background event rate resulting from $\beta$-decay of radon decay progeny, LZ has embarked on a comprehensive program to screen detector materials for radon emanation. We will present the status of this screening program, e ... More
Presented by Dr. Eric MILLER on 25/5/2017 at 1:00
Type: Oral Session: Session 4
Borexino, located at the Gran Sasso Laboratory, is a liquid scintillator detector with active mass of 278 tons. The main goal of the experiment is the real-time registration of sub-MeV solar neutrinos through their elastic scattering on electrons. The lack of directionality of the light emitted by the scintillator makes it impossible to distinguish neutrino-scattered electrons from electrons due t ... More
Presented by Dr. Grzegorz ZUZEL on 25/5/2017 at 0:20
Type: Oral Session: Session 4
There is a growing need for argon that has a lower concentration of <sup>39</sup>Ar than that found in argon derived from the atmosphere. This isotope is the limiting background for any argon-based low-level radiation detector, such as argon dark matter detectors and low-level argon radiation detectors for environmental measurements (e.g., <sup>39</sup>Ar age dating). In the atmosphere, cosmic-ray ... More
Presented by Dr. Henning BACK on 25/5/2017 at 1:40
Type: Oral Session: Session 4
The radioactive noble gas radon is an important source of internal background in many dark matter experiments based on liquid xenon. Due to emanation, $^{222}$Rn is permanently released into the detectors' liquid xenon targets. Careful material selection based on their radon emanation rate is a powerful strategy to mitigate background. In order to achieve further radon reduction, we discuss the co ... More
Presented by Mr. Stefan BRUENNER on 25/5/2017 at 0:40
Type: Oral Session: Session 4
A potential background for the SuperCDMS SNOLAB dark matter experiment is from radon daughters that have plated out onto detector surfaces. To reach background requirements, understanding plate-out rates during detector fabrication as well as mitigating radon in surrounding air is critical. A radon mitigated cleanroom planned at SNOLAB builds upon a system commissioned at the South Dakota School o ... More
Presented by Mr. Joseph STREET on 25/5/2017 at 2:00
Type: Oral Session: Session 4
The Jiangmen Underground Neutrino Observatory (JUNO) is under construction in the south of China which aims to measure the neutrino mass hierarchy and neutrino oscillation parameters by studying the reactor neutrinos from two nearby nuclear power plants 53km away. JUNO is also designed to has good capabilities of researches such as supernova neutrinos, geo-neutrinos, solar neutrinos and so on. The ... More
Presented by Dr. Tao HU on 25/5/2017 at 0:00
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