A Heavy Ion Beam Probe (HIBP) has been installed on MST to obtain nonperturbing,
local measurements of equilibrium and fluctuating core parameters. The 200kV
ion accelerator, 100kV energy analyzer, most vacuum and electronic systems
are from the ATF and TEXT HIBP's. However, each component has been reconditioned
and/or rebuilt to utilize subsequent HIBP design advances. Unique to the
MST-HIBP are three cross-over sweep systems which make measurements feasible
at essentially all plasma radii. The broad range of possible probing angles,
energies and ion species and the reproducibility of MST plasmas make it
possible to address several implementation challenges. These include high
levels of plasma and UV flux at MST ports, which prompted design and implementation
of magnetic apertures to protect the sweeps. Also, the magnetic field being
largely produced by the plasma makes determination of measurement locations
exclusively from trajectory calculations difficult. This motivated the design
of MST-wall mounted detectors for system alignment, calibration, and subsequent
development of improved confining field models.