Super-Kamiokande
Neutrinos, Grand Unification, Astrophysics
"You asked for it...you got it!"
Super-Kamiokande is a 50,000 ton neutrino experiment located 1 km
underground in an unused zinc mine near Kamioka, Japan. It is sponsored
by the Japanese Ministry for Education and Culture, and the U.S. Department
of Energy. It's main goals are:
- the measurement of the flux and energy spectrum of 8-boron neutrinos
from the Sun
- the measurement of the flux and composition of cosmic ray neutrinos
from charged particle interactions in the upper atmosphere
- the search for nucleon decay, as predicted by Grand Unified theories
of the electroweak and strong interactions
- the search for high energy sources of astrophysical neutrinos
SuperK Recent Results
SEE A NEUTRINO IMAGE OF THE SUN!
This image is a 500-day exposure from 7-25 MeV. It is a plot of the
difference between the sun's RA (x-axis) and DEC (y-axis) and those of
the reconstructed neutrino-induced secondary electrons. This secondary
scattering process smears out the image, so that it is many times the
actual size of the sun.
- Here is a summary of
the results from 1496 days of solar neutrino observations.
- Here is a plot of the 1496-day
spectrum above 5.0 MeV as compared to the BP2000 solar model.
- Here is a plot of the 1496-day
day/night relative flux above 5.0 MeV.
- Here is a plot
of the angle from the sun for 1496 days.
- Here is the MSW
exclusion plot for 1496 days (assuming HEP neutrino flux is a free
parameter). The green areas are the allowed regions based on the
absolute flux measurements of all the solar neutrino experiments to date.
The blue are is the allowed region obtained by constraining Super-K data
with the flux from the BP2000 solar model.
Yasashi Monte Carlo Algorithm (YMCA)
YMCA is a Super-Kamiokande specific driver for the
CERENLIB library of
routines first developed for the IMB proton decay experiment.
Here is a general description of
the program. The YMCA program is available only to Super-Kamiokande
Collaborators, although CERENLIB is available on a case-by-case
basis upon written request.
For information on the latest tuning:
Event Fitting
Other SuperK links
Bob Svoboda phsvob@lsu.edu