  Some evidence for sterile neutrinos has been found in short baseline
observations where the measured neutrino flux did not agree with expectations.
Systematic uncertainties from the expected values has limited the sensitivity
of this approach. Observation at multiple distances can remove the
normalization uncertainty by isolating the distance dependence. This doesn't
work for high $\Delta m^{2}$ sterile neutrinos since they are fully mixed at
most observation distances and only shift the normalization of the flux. A
compact intense source of neutrinos based on a subcritical fission reactor
would permit observation of oscillations on submeter distance scales and
clearly distinguish between a systematic normalization and the $L/E$ dependence
expected from oscillations.
