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June 22, 2020 to July 2, 2020
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Simulation study of Ocean Bottom Detector(OBD) for observation of geo-neutrinos from the mantle

Not scheduled


Mr Taichi Sakai (Tohoku Univ,Research Center for Neutrino Science)


By the observation of geo-neutrinos originating from radioactive isotopes in the Earth (238U,232Th), we can know the amount of radioactive isotopes and the radiogenic heat which governs the Earth dynamics.
Ocean Bottom Detector can observe geo-neutrinos from the mantle directly. Unlike existing other neutrino detectors, OBD detects neutrinos on the seafloor. Given that the oceanic crust is thinner than the continental crust and has lower densities of U and Th, ~70% of anti-neutrinos at OBD come from the mantle. Another unique feature of OBD is keeping the distance from the reactors which are the main background sources for continental detectors. In addition, this movable detector can observe at multiple points in the ocean.
Currently we are considering the detector design. I estimated backgrounds from structures of detector and set upper limit of amount of isotopes. We will present results of detector design based on MC simulation.


Detector design of Ocean Bottom Detector with MC simulation for mantle geo-neutrino measurement

Experiment/Collaboration Ocean Bottom Detector

Primary author

Mr Taichi Sakai (Tohoku Univ,Research Center for Neutrino Science)


Dr Eiichirou Araki (JAMSTEC) Dr Hiroko Watanabe (Tohoku University) Dr Hiroshi Yoshida (JAMSTEC) Dr Kenta Ueki (JAMSTEC) Prof. Kunio Inoue (Tohoku Univ. Research Center for Neutrino Science) Dr Masanori Kyo (JAMSTEC) Dr Natsue Abe (JAMSTEC) Dr Noriaki Sakurai (JAMSTEC) Dr Takafumi Kasaya (JAMSTEC) Prof. William McDonough (Tohoku Univ. University of Maryland)

Presentation Materials