[SIT22-P24] Development of New Technology for Geoneutrino Directional Measurement
Keywords:geoneutrino, radiogenic power
KamLAND (Kamioka, Japan) and Borexino (Gran Sasso, Italy) have showed the geo anti-neutrino detection realized by the event rate and energy spectra. We have begun to use neutrinos as “probe” to observe the Earth’s interior. Since geo-neutrino measurement does not have the sensitivity of its direction, what we can do is measuring total geo-neutrino flux from mantle and crust.
It is hoped the development of new measurement technology to measure neutrino direction. We found that combination of lithium-loaded liquid scintillator and imaging detector had the potential to have the high sensitivity of coming anti-neutrino direction. Directional sensitive detectors will contribute to the better understanding of the earth interior using geo anti-neutrino flux information. Other motivations are the earlier determination of supernova direction and improvement of oscillation sensitivity for reactor anti-neutrinos.