Borexino-The Achievements And Prospects

NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS(2014)

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摘要
The Borexino detector, located in the Gran Sasso National Laboratory in Italy, has been designed for real-time spectroscopy of low-energy solar neutrinos. It is also capable to register geo-neutrinos and neutrinos from artificial sources. In Phase I of the experiment lasting for three years between May 2007 and May 2010, we performed the first independent measurements of Be-7, B-8 and pep solar-neutrino fluxes, as well as the first measurement of antineutrinos from the Earth. After a dedicated purification campaign of the liquid scintillator in 2011 Borexino entered into Phase II, which allowed to investigate the seasonal modulation in the Be-7 signal, to study the cosmogenic backgrounds and to update the measurement of the geo-neutrinos. Within Borexino a new project SOX is also under development. It is devoted to search for sterile neutrinos via the use of a Cr-51 neutrino source and a Ce-144- Pr-144 antineutrino source placed in close proximity of the detector active volume.
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