Oak Ridge Large Neutrino Detector
We propose to construct a massive
detector to search for neutrino
oscillations and other neutrino-induced reactions, as a comprehensive test
of the Standard Model of particle physics, at the Spallation Neutron Source
proposed to be built at the Oak Ridge National Laboratory (ORNL).
The principal motivation of the experiment is to perform a class of experiments
to rigorously test the validity of the Standard Model of particle physics
using neutrinos as probes. The experiment will search for the appearance
of 
produced in the beam
stop from muons decaying at rest. It will also search for 
oscillations with extraordinarily high sensitivity. This level of sensitivity
is required in order to reduce the uncertainty of the results down to what
is inevitable in view of the natural process itself. The recently reported
neutrino
oscillation signal observed by the LSND
experiment can also be scrutinized by more than two orders of magnitude,
thus reaching the inherent limit of such experiments.
The detector
will also be sensitive to the disappearance of
when the second proton storage ring is complete. Furthermore, the proposed
detector
will yield high-statistics neutrino-electron scattering data and, due to
the fast-spill nature of the beam, a precise measurement of 
will be possible.
The detector is to be used in conjunction
with the newly proposed high-intensity short-beam-spill spallation source.
The experiment will yield data with high statistical precision and small
systematic errors because of the precise measurement of the known
+
+ 
cross section. The proposed detector makes it also possible to measure
with very high precision other neutrino cross sections that are of interest
to fundamental physics as well as nuclear physics and astrophysics.
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