Characteristics of ELMs and Their Effects on the Pedestal Plasma

2 Characteristics of ELMs and Their Effects on the Pedestal Plasma 

The short time scales over which this collapse takes places ( 200p.s for the case in Fig. 3.4) leads to very large power ( GW/m2 in JET) and particle fluxes reaching the material elements in contact with the plasma. These large 

The quantitative characteristics of the collapse of pedestal parameters and of the energy and particle fluxes onto PFCs caused by the ELMs depend on the ELM type. Three types of ELMs have been identified and characterized according to their frequency dependence with input power and pedestal plasma pressure  

Because of this, the Type I ELMy H-mode regime has been chosen as the reference operating regime for high fusion gain experiments in next step devices, such as ITER and FIRE [23], despite the drawbacks associated with the large energy and particle fluxes on the PFCs inherent to the Type I ELMs themselves. 

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