  The Oak Ridge National Laboratory (ORNL) Spallation Neutron Source (SNS)
First Target Station (FTS), used by the COHERENT experiment, provides an
intense and extremely high-quality source of pulsed stopped-pion neutrinos,
with energies up to about 50 MeV. Upgrades to the SNS are planned, including a
Second Target Station (STS), which will approximately double the expected
neutrino flux while maintaining quality similar to the FTS source. Furthermore,
additional space for ten-tonne scale detectors may be available. We describe
here exciting opportunities for neutrino physics, other particle and nuclear
physics, and detector development using the FTS and STS neutrino sources.
