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Professor Mark Chen Princeton University Borexino is a new experiment being constructed in the Gran Sasso underground lab in Italy. The goal of Borexino is to measure the flux of Be-7 solar neutrinos, a critical piece of the solar neutrino puzzle. With the full, standard solar model flux, a rate of about 50 neutrinos events per day is expected in the 100-ton fiducial volume of Borexino, compared with a background estimated to be around 10 events per day, based upon radioactivity measurements with the prototype Counting Test Facility. In addition to solar neutrinos, Borexino will be an excellent detector for antineutrinos from European reactors and from the decay of radioactive elements in the Earth. Thus, Borexino may be the first experiment to detect terrestrial antineutrinos.
Thursday, November 26th 1998, 15:30 |