Target Plate Profiles During ELM Suppression Experiments on DIII-D

Radial profiles of target plate plasma conditions during ELM suppressed conditions have been measured with the new DIII-D lower divertor Langmuir probe array. ELM suppression was accomplished using n=3 resonant magnetic perturbations [1]. Evidence of the n=3 mode structure of the perturbation can be seen most clearly in the V$_{f}$ profile on the target plate. The spacing of the multiple peaks in the V$_{f}$ profile is similar to predictions of the TRIP3D field line integration code. $T_{e}$ values $>$100~eV and V$_{f}$ values down to --150 V were measured. We observe resonant behavior of the target plate parameters near the q$_{95}$ value for maximum magnetic perturbation. Heat flux from the Langmuir probe measurements will be compared with infrared cameras and thermocouples. The resulting sheath power transmission factor profile will be shown. [1] T.E. Evans, \textit{et al., }Phys. Rev. Lett. \textbf{92}, 235003 (2004).