QH-mode in Low Rotation, ITER-Similar Plasmas Using Static Non-axisymmetric Magnetic Fields
POSTER
Abstract
\mbox{DIII-D} experiments have shown that static 3D magnetic fields can be used to maintain the edge rotation shear required for ELM-stable operation in QH-mode even with zero-net torque from neutral beam injection (NBI). These results have been obtained in ITER-similar shape plasmas with ITER-level collisionality, normalized beta, and confinement quality. New experiments are planned to extend the previous results to conditions closer yet to those of ITER: 3D field application using coils external to the vessel, small co-$I_p$ NBI torque, and low $q_{95}\sim 3$. Results will be discussed.
*Work supported by US DOE under DE-FC02-04ER54698, DE-AC02-09CH11466, and DE-AC52-07NA27344.