Influence of particle sources on electron density peaking in TCV and JET

Calculations of the particle flux caused by neutrals originating from the edge are performed for TCV and JET using the one-dimensional kinetic transport code Kn1D. The analysis, confirmed by experimental evidence, shows that for TCV and JET edge fuelling as well as neutral beam fuelling cannot be responsible for the density gradient in the plasma bulk, confirming the presence of inward particle convection. The results corroborate the expectation of a peaked density profile in ITER, despite the lack of bulk particle fuelling.


Published in:
Nuclear Fusion, 46, 5, 594-607
Year:
2006
ISSN:
0029-5515
ISBN:
0029-5515
Keywords:
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-01-28


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