TY - JOUR
T1 - Liquid Xenon detector R&D for 0v2 search (KamXP)
AU - Ueshima, Kota
N1 - Funding Information:
This work is supported by the Japan Society for the Promotion of Science (JPSP) Grant-in-Aid for Young Scientists (A), Project Number 17H04834.
Publisher Copyright:
© 2020 Published under licence by IOP Publishing Ltd.
PY - 2020/3/20
Y1 - 2020/3/20
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85083098687&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85083098687&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1468/1/012138
DO - 10.1088/1742-6596/1468/1/012138
M3 - Conference article
AN - SCOPUS:85083098687
VL - 1468
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012138
T2 - 16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019
Y2 - 9 September 2019 through 13 September 2019
ER -