This operational target will undergo some modification and improvement
to meet the demands of the changed experimental environment for E155. These
are mainly in the area of microwaves and nuclear magnetic resonance
measurement. Much of this development work will take place at UVA with final
in-situ testing at SLAC. It will focus on the efficient transmission of
microwave power to the targets and the design of target holders and NMR coils.
This is done to reduce the systematic background from scattering from the
coils, to increase the maximum polarization and the precision of the
measurement. New target material (both 
and 
)
will be irradiated at Stanford University and studied through polarization and EPR
measurements. An additional improvement will be instrumentation for a simultaneous
measurement of the 
polarization with either the proton or deuteron
measurement rather than switching as is the current practice.
The time line for these studies will be 18 months from the start of this program (July 1st 1995) at which time the expectation is that set-up for E155 will start.