  High-power particle production targets are crucial elements of future
neutrino and other rare particle beams. Fermilab plans to produce a beam of
neutrinos (LBNE) with a 2.3 MW proton beam (Project X). Any solid target is
unlikely to survive for an extended period in such an environment - many
materials would not survive a single beam pulse. We are using our experience
with previous neutrino and antiproton production targets, along with a new
series of R&D tests, to design a target that has adequate survivability for
this beamline. The issues considered are thermal shock (stress waves), heat
removal, radiation damage, radiation accelerated corrosion effects,
physics/geometry optimization and residual radiation.
