Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aps..ses.fa008d&link_type=abstract
American Physical Society, 67th Annual Meeting of the APS Southeastern Section November 2 - 4, 2000 Mississippi State University
Astronomy and Astrophysics
Astrophysics
Scientific paper
KamLAND will be the largest low-energy anti-neutrino detector ever built. It will study a wide range of science including particle physics, geophysics and astrophysics. Main objective of the project is to search for neutrino oscillations in disappearance mode by studying the flux and energy spectrum of anti-neutrinos produced by Japanese commercial nuclear reactors. The detector is exposed to low-energy anti-neutrinos coming from 16 commercial nuclear power stations, 150-200 km away from the experimental site. The extraordinary beseline and low anti-neutrino energies give us the possibility, for the first time, to access the large mixing angle solution of the solar neutrino problem in a terrestrial experiment and therefore provide a solar model independent test for neutrino oscillations. The quality of these measurements will depend on the extent to which the radioactive contamination, and hence the background, can be controlled. We expect the background to be dominated by the internal radioactivity of the scintillator. Goal of our project is to verify that the liquid scintillator has a purity level of 10-10 and 10-14 g/g in K and U/Th as required to carry out KamLAND's reactor neutrino program. We are working on a developement of a Neutron Activation Analysis to provide such test. Result and status of the project will be discussed.
Djurcic Zelimir
Piepke Andreas
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