Surface purity control during XMASS detector refurbishment

Kazuyoshi Kobayashi*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


The XMASS project aims at detecting dark matter, pp and 7Be solar neutrinos, and neutrino less double beta decay using large volume of pure liquid xenon. The first physics target of the XMASS project is to detect dark matter with 835 kg liquid xenon. After the commissioning runs, XMASS detector was refurbished to minimize the background contribution mainly from PMT sealing material and we restarted data taking in November 2013. We report how we control surface purity, especially how we prevent radon daughter accumulation on the detector copper surface, during XMASS detector refurbishment. The result and future plan of XMASS are also reported.

Original languageEnglish
Title of host publicationLow Radioactivity Techniques 2015, LRT 2015
Subtitle of host publicationProceedings of the 5th International Workshop in Low Radioactivity Techniques
EditorsJohn L. Orrell
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413191
Publication statusPublished - 2015 Aug 17
Externally publishedYes
Event5th International Workshop in Low Radioactivity Techniques, LRT 2015 - Seattle, United States
Duration: 2015 Mar 182015 Mar 20

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference5th International Workshop in Low Radioactivity Techniques, LRT 2015
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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