Liquid Xenon detector R&D for 0v2 search (KamXP)

Kota Ueshima

Research output: Contribution to journalConference articlepeer-review


The R&D for a new type of liquid xenon (LXe) detector is ongoing to search for the neutrinoless double-beta decay (0v2β). As a result of the KamLAND-Zen experiment, it is very important to realize the all active region detector for the energy deposition of the radiation. Newly developed additional BG reduction techniques will improve the sensitivity of 0v2β search in the future. Our detector concept is LXe stored in a new type of plastic scintillator vessel. The wavelength of LXe scintillation light is shifted to visible light from 175nm (VUV) on the inner surface of the vessel. Therefore, the LXe scintillation light can be detected by photon sensors which are far away from the 0v2β target nuclei. The pulse shape difference between LXe and plastic scintillator is used for the additional BG reduction. In the future, 8B solar neutrino events will be one of the dominant BGs in 0v2β search. To reduce the 8B solar neutrino BG, the directional information of the Cherenkov light might be useful. The status of LXe detector R&D to improve the sensitivity of 0v2β search is reported.

Original languageEnglish
Article number012138
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2020 Mar 20
Event16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019 - Toyama, Japan
Duration: 2019 Sep 92019 Sep 13

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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