Divertor Target Plate Measurements With the New DIII-D Langmuir Probe Array

A new Langmuir probe array with higher power handling capability was installed in the DIII-D lower divertor. The new pyrolytic graphite probes have 100X larger mass than the previous design that increases the total energy capacity for longer plasma pulses, a fixed 12.5~degree surface angle for more uniform heat flux, and a symmetric ``rooftop" design to allow operation with reversed toroidal field. The 4~mm wide probes are located 1.5~cm apart near the pumping baffle entrance for improved spatial resolution and 3~cm apart on the shelf above the pump. Target plate profiles, of $n_e$, $T_e$, and $I_{sat}$ at high spatial resolution during radiative divertor and ELM suppression experiments, which use strong divertor pumping, will be shown.