Overview of Recent DIII-D Experimental Results

DIII-D advances fusion research for burning plasma reactors. Record Super-H-mode pedestal performance and ELM suppression (QH-mode, RMP) using a new high-κ, high-δ divertor reveal wider pedestals beyond standard limits. Negative triangularity plasmas exceed Greenwald limits, showing separate edge/core density limits. Diverted NT plasmas achieve high confinement without ELMs via narrow shear-driven edge barriers. High-density hybrids show type-I ELM mitigation with wide pedestals and enhanced stability. Alfvén eigenmodes in NBI-heated plasmas can suppress microturbulence and enhance confinement by driving shear and zonal flows. Xe/Kr impurities mimic reactor level tungsten radiation, revealing nonlinear oscillations key for burn control. Additively manufactured tungsten porous structures exposed to divertor heat fluxes prevents droplets and core contamination of the enclosed Li. Helicon waves show non-inductive current drive and core heating without impurity influx. Tungsten erosion is high in attached conditions but causes less core leakage compared to detached conditions, which show the opposite. An ML framework predicts real-time super-resolution Thomson Scattering data, enabling full ELM cycle capture and diagnostic recovery without new hardware.