Long timescale density peaking in JET

M. Valovic, J. Rapp, J.G. Cordey, R. Budny, D.C. McDonald, L. Garzotti, A. Kallenbach, M.A. Mahdavi, J. Ongena, V. Parail, G. Saibene, R. Sartori, M. Stamp, O. Sauter, J. Strachan, W. Suttrop

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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.
Original languageEnglish
Pages (from-to)1911 - 1917
Number of pages7
JournalPlasma Physics and Controlled Fusion
Volume44
Issue number9
DOIs
Publication statusPublished - Sep 2002
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Valovic, M., Rapp, J., Cordey, J. G., Budny, R., McDonald, D. C., Garzotti, L., ... Suttrop, W. (2002). Long timescale density peaking in JET. Plasma Physics and Controlled Fusion, 44(9), 1911 - 1917. https://doi.org/10.1088/0741-3335/44/9/309