Laboratory studies on the removal of radon-born lead from KamLAND's organic liquid scintillator

G. Keefer, C. Grant, A. Piepke, T. Ebihara, H. Ikeda, Y. Kishimoto, Y. Kibe, Y. Koseki, M. Ogawa, J. Shirai, S. Takeuchi, C. Mauger, C. Zhang, G. Schweitzer, B. E. Berger, S. Dazeley, M. P. Decowski, J. A. Detwiler, Z. Djurcic, D. A. DwyerY. Efremenko, S. Enomoto, S. J. Freedman, B. K. Fujikawa, K. Furuno, A. Gando, Y. Gando, G. Gratta, S. Hatakeyama, K. M. Heeger, L. Hsu, K. Ichimura, K. Inoue, T. Iwamoto, Y. Kamyshkov, H. J. Karwowski, M. Koga, A. Kozlov, C. E. Lane, J. G. Learned, J. Maricic, D. M. Markoff, S. Matsuno, D. McKee, R. D. McKeown, T. Miletic, T. Mitsui, M. Motoki, Kyo Nakajima, Kyohei Nakajima, K. Nakamura, T. O'Donnell, H. Ogawa, F. Piquemal, J. S. Ricol, I. Shimizu, F. Suekane, A. Suzuki, R. Svoboda, O. Tajima, Y. Takemoto, K. Tamae, K. Tolich, W. Tornow, Hideki Watanabe, Hiroko Watanabe, L. A. Winslow, S. Yoshida

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The removal of radioactivity from liquid scintillator has been studied in preparation of a low background phase of KamLAND. This paper describes the methods and techniques developed to measure and efficiently extract radon decay products from liquid scintillator. We report the radio-isotope reduction factors obtained when applying various extraction methods. During this study, distillation was identified as the most efficient method for removing radon-born lead from liquid scintillator.

Original languageEnglish
Pages (from-to)79-87
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume769
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • KamLAND
  • Liquid scintillator
  • Low background
  • Purification
  • Solar neutrinos

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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    Keefer, G., Grant, C., Piepke, A., Ebihara, T., Ikeda, H., Kishimoto, Y., Kibe, Y., Koseki, Y., Ogawa, M., Shirai, J., Takeuchi, S., Mauger, C., Zhang, C., Schweitzer, G., Berger, B. E., Dazeley, S., Decowski, M. P., Detwiler, J. A., Djurcic, Z., ... Yoshida, S. (2015). Laboratory studies on the removal of radon-born lead from KamLAND's organic liquid scintillator. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 769, 79-87. https://doi.org/10.1016/j.nima.2014.09.050