Speaker
Ms
Mariia Redchuk
(Forschungszentrum Jülich IKP-2)
Description
Borexino is a liquid scintillator detector the primary goal of which is measuring the flux of neutrinos coming from the Sun. It is located in the Laboratori Nazionali del Gran Sasso (LNGS) in the mountains of Italy at 3800 m water-equivalent depth. Its already unprecedentedly low radioactive background was enhanced even more after extensive purification campaigns in 2010 and 2011, which started Phase II of data taking characterized by higher sensitivity.
The main focus of the experiment is on the lower energy region of the solar spectrum. To determine the rates of the background and the pp, 7Be, and pep solar species, multivariate fits were performed on the Borexino energy spectra (using Monte Carlo as well as analytical approaches), the radial and pulse-shape distributions of the events.
For the first time the energy range of the fit was extended in order to obtain information about the pp, 7Be, and pep solar neutrinos simultaneously. The highlights of the PhaseII data analysis and updated results on the measurement of solar neutrino fluxes will be summarized in the poster.
This poster is presented in the name of the Borexino collaboration.
Primary author
Ms
Mariia Redchuk
(Forschungszentrum Jülich IKP-2)
