Progress in the definition of the requirements for edge localized mode (ELM) control and the
application of ELM control methods both for high fusion performance DT operation and non-
active low-current operation in ITER is described. Evaluation of the power fluxes for low
plasma current H-modes in ITER shows that uncontrolled ELMs will not lead to damage to
the tungsten (W) divertor target, unlike for high-current H-modes in which divertor damage
by uncontrolled ELMs is expected. Despite the lack of divertor damage at lower currents …

Full text: High fusion performance DT operation in ITER is based on the achievement of the
H-mode confinement regime with H {sub 98}{>=} 1 and an edge transport barrier that is
expected to lead to the quasi-periodic triggering of ELMs. Operation of ITER with H-mode
plasmas is also foreseen during the non-active (H & He) and DD operation allowing the
development of ELM control schemes before DT operation. The non-linear MHD evolution of
the plasma during ELMs in ITER has been modelled with the JOREK code which shows that …