Potential of Geo-neutrino Measurements at JUNO
Ran Han, Yu-Feng Li, Liang Zhan, William F. McDonough, Jun Cao, Livia, Ludhova
TL;DR
The paper discusses the potential of the upcoming JUNO detector to significantly improve geoneutrino measurements, enabling better understanding of Earth's radioactive element distribution and geological processes.
Contribution
It introduces the JUNO detector design, estimates its geo-neutrino signal and backgrounds, and evaluates its potential for high-precision geological measurements.
Findings
JUNO will achieve high-statistics geo-neutrino detection.
Enhanced measurements of Th/U ratio are possible.
Potential to study mantle radioactivity with improved accuracy.
Abstract
The flux of geoneutrinos at any point on the Earth is a function of the abundance and distribution of radioactive elements within our planet. This flux has been successfully detected by the 1-kt KamLAND and 0.3-kt Borexino detectors with these measurements being limited by their low statistics. The planned 20-kt JUNO detector will provide an exciting opportunity to obtain a high statistics measurement, which will provide data to address several questions of geological importance. This paper presents the JUNO detector design concept, the expected geo-neutrino signal and corresponding backgrounds. The precision level of geo-neutrino measurements at JUNO is obtained with the standard least-squares method. The potential of the Th/U ratio and mantle measurements is also discussed.
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