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The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment

Publication ,  Journal Article
Gando, Y; Gando, A; Hachiya, T; Hayashida, S; Hosokawa, K; Ikeda, H; Mitsui, T; Nakada, T; Obara, S; Ozaki, H; Shirai, J; Ueshima, K; Abe, S ...
Published in: Journal of Instrumentation
August 1, 2021

The KamLAND-Zen 800 experiment is searching for the neutrinoless double-beta decay of 136Xe by using 136Xe-loaded liquid scintillator. The liquid scintillator is enclosed inside a balloon made of thin, transparent, low-radioactivity film that we call Inner Balloon (IB). The IB, apart from guaranteeing the liquid containment, also allows to minimize the background from cosmogenic muon-spallation products and 8B solar neutrinos. Indeed these events could contribute to the total counts in the region of interest around the Q-value of the double-beta decay of 136Xe. In this paper, we present an overview of the IB and describe the various steps of its commissioning minimizing the radioactive contaminations, from the material selection, to the fabrication of the balloon and its installation inside the KamLAND detector. Finally, we show the impact of the IB on the KamLAND background as measured by the KamLAND detector itself.

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Published In

Journal of Instrumentation

DOI

EISSN

1748-0221

Publication Date

August 1, 2021

Volume

16

Issue

8

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
 

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Gando, Y., Gando, A., Hachiya, T., Hayashida, S., Hosokawa, K., Ikeda, H., … Decowski, M. P. (2021). The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment. Journal of Instrumentation, 16(8). https://doi.org/10.1088/1748-0221/16/08/P08023
Gando, Y., A. Gando, T. Hachiya, S. Hayashida, K. Hosokawa, H. Ikeda, T. Mitsui, et al. “The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment.” Journal of Instrumentation 16, no. 8 (August 1, 2021). https://doi.org/10.1088/1748-0221/16/08/P08023.
Gando Y, Gando A, Hachiya T, Hayashida S, Hosokawa K, Ikeda H, et al. The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment. Journal of Instrumentation. 2021 Aug 1;16(8).
Gando, Y., et al. “The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment.” Journal of Instrumentation, vol. 16, no. 8, Aug. 2021. Scopus, doi:10.1088/1748-0221/16/08/P08023.
Gando Y, Gando A, Hachiya T, Hayashida S, Hosokawa K, Ikeda H, Mitsui T, Nakada T, Obara S, Ozaki H, Shirai J, Ueshima K, Watanabe H, Abe S, Hata K, Hayashi A, Honda Y, Ieki S, Inoue K, Ishidoshiro K, Ishikawa S, Kamei Y, Kamizawa K, Karino Y, Kawada N, Kinoshita T, Koga M, Matsuda S, Miyake H, Nakamura K, Nemoto K, Ono A, Ota N, Otsuka S, Shibukawa Y, Shimizu I, Shirahata Y, Soma K, Suzuki A, Suzuki AA, Takai T, Takeuchi A, Tamae K, Teraoka Y, Wada Y, Chernyak D, Kozlov A, Yoshida S, Umehara S, Takemoto Y, Fushimi K, Hirata S, Grant C, Li A, Learned JG, Maricic J, Berger BE, Fujikawa BK, Fraker S, Herman A, Krupczak E, Pease GL, Winslow LA, Efremenko Y, Karwowski HJ, Markoff DM, Tornow W, O’Donnell T, Dell’oro S, Detwiler JA, Enomoto S, Decowski MP. The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment. Journal of Instrumentation. 2021 Aug 1;16(8).
Journal cover image

Published In

Journal of Instrumentation

DOI

EISSN

1748-0221

Publication Date

August 1, 2021

Volume

16

Issue

8

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences