  New plasma regimes with high confinement, low core impurity accumulation and
small Edge localized mode (ELMs) perturbations have been obtained close to ITER
conditions in magnetically confined plasmas from the Joint European torus (JET)
tokamak. Such regimes are achieved by means of optimized particle fuelling
conditions which trigger a self-organize state with a strong increase in
rotation and ion temperature and a decrease of the edge density. An interplay
between core and edge plasma regions leads to reduced turbulence levels and
outward impurity convection. These results pave the way to an attractive
alternative to the standard plasmas considered for fusion energy generation in
a tokamak with metallic wall environment such as the ones expected in ITER
