UKAEA-CCFE-PR(22)48
SOL PROFILE AND FLUCTUATIONS IN DIFFERENT DIVERTOR RECYCLING CONDITIONS IN H-MODE PLASMAS
The evolution of SOL density profiles and fluctuations have been studied at different recycling levels in 3 different tokamaks, ASDEXUpgrade, TCV and JET, all operated in HMode. In all devices we clearly observe an increase of far SOL efolding length at high fuelling with the divertor at least in highrecycling regime and high divertor neutral pressure. The observed variation is generally associated to an increase filamentary activity with indication of faster more frequent filaments in the far SOL. The relation of SOL turbulence with divertor and separatrix conditions will be discussed.