Abstract
The resonant location of the first plasma response to periodic toroidal phase flips of a resonant magnetic perturbation (RMP) field is experimentally identified in the DIII-D tokamak using phase minima of the modulated plasma density and toroidal rotation relative to the RMP field. The plasma response coincides with the q = 3 rational surface and electron fluid velocity null, which is consistent with simulations of the plasma response to the RMP field from resistive magnetohydrodynamics (MHD) modeling. An asymmetric propagation of the particle and the momentum transport from the resonant location of the plasma response to the RMP into the core and into the plasma edge is observed.
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