“…The coefficient χ0, found in T-10, allows us to calculate the best energy confinement in various tokamaks. Figure 8 from [18] shows the relationship between the calculated and measured energy store for the highest performance discharges obtained in JET, AUG, JT-60U, DIII-D, and KSTAR tokamaks. It is easy to see that the experimental If we try to stabilize the island using ECR heating or current drive, we destruct the barrier, always located on the outer side of the island [9].…”