Prof. Kate Scholberg
Super-K is a giant underground water Cherenkov detector located in a mine in the Japanese Alps, built to search for proton decay and to study neutrinos from the sun, from cosmic ray collisions in the atmosphere, and from supernovae. Super-K is currently being rebuilt and will be back in operation in early 2003.
K2K, which stands for "KEK to Kamioka," is the first "long-baseline" neutrino experiment. The idea is to test the neutrino oscillation interpretation of the atmospheric neutrino results with an artificial beam of neutrinos generated at the KEK Laboratory in Tsukuba, Japan. KEK sends the beam 250 km through the Earth to the Super-K detector. In summer of 1999, we detected the first long-distance neutrinos, and preliminary results confirm the oscillation hypothesis. The beam will restart in 2003.
SNEWS is an inter-experiment collaboration of detectors with Galactic supernova sensitivity. Neutrinos from a core collapse will precede the photon signal by hours; therefore coincident observation of a burst in several neutrino detectors may be a robust early warning of a visible supernova. Our goals are to provide the astronomical community with a prompt alert of a Galactic core collapse, as well as to optimize global sensitivity to supernova neutrino physics.