Long timescale density peaking in JET
- 30 August 2002
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 44 (9) , 1911-1917
- https://doi.org/10.1088/0741-3335/44/9/309
Abstract
Long timescale density peaking has been observed in JET plasmas leading to densities exceeding the Greenwald value. These neutral beam heated discharges are characterized by type-I ELMs and good energy confinement. Central density is limited by neoclassical tearing modes or by termination of H-mode preceded by loss of sawteeth. When these limiting factors are avoided (i.e. at intermediate power level and with optimization of gas puffing) quasi-stationary high density plasmas with peaked density profile are obtained.Keywords
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