Pellet Fuelling with Edge-Localized Modes Controlled by External Magnetic Perturbations in MAST

Pellet Fuelling with Edge-Localized Modes Controlled by External Magnetic Perturbations in MAST

Pellet Fuelling with Edge-Localized Modes Controlled by External Magnetic Perturbations in MAST 150 150 Mathew
CCFE-PR(15)03

Pellet Fuelling with Edge-Localized Modes Controlled by External Magnetic Perturbations in MAST

The fuelling of plasmas by shallow frozen pellets with simultaneous mitigation of edge- localised modes (ELM) by external magnetic perturbation is demonstrated on the MAST tokamak. In these plasmas post-pellet particle loss is dominated by ELMs. It is shown that the size of post-pellet ELMs can be controlled by external magnetic perturbations. Post-pellet ELMs remove particles from the large part of pellet deposition zone including the area with positive density gradient. The mechanism explaining this peculiarity of particle loss is suggested.

Collection:
Journals
Journal:
Nuclear Fusion
Publisher:
IOP
Published date:
12/01/2014