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Abstract
"The Borexino Solar Neutrino experiment at Gran Sasso"
José Maneira
INFN-Milano/Gran Sasso, FCUL/LIP-Lisboa
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Borexino is a new real-time detector for low-energy solar neutrinos
presently in construction at the Gran Sasso underground laboratory,
in Italy. The goal of the experiment is the measurement of the flux
(average and time variations) of monoenergetic Be-7 solar neutrinos
via neutrino-electron scattering in 100 tons of high purity liquid
scintillator. This poster will briefly describe the experiment and
its role in the solution of the Solar Neutrino Problem, in particular
the discrimination between the several oscillation scenarios.
The low background levels needed to observe solar neutrinos below
1 MeV place very stringent requirements in the radiopurity of the
scintillator and other detector materials.
New technologies in low counting Nuclear Physics were developed through
the test experiment CTF installed in Gran Sasso, that reached and
measured some of the highest radiopurity levels ever achieved.
This poster will also summarize the most relevant results obtained in
CTF and in the R&D phase of the experiment, emphasizing its
implications in the design of Borexino.
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