Prediction of ELM-free Operation in Spherical Tokamaks With High Plasma Squareness

J. F. Parisi, J. W. Berkery, K. Imada +5

We predict that high plasma squareness in spherical tokamaks (STs) could result in edge-localized-mode (ELM)-free H-mode. The effect of squareness on gyrokinetic and peeling-balloo…