Recording non-local temperature rise in the RTP tokamak

TitleRecording non-local temperature rise in the RTP tokamak
Publication TypeJournal Article
Year of Publication2000
AuthorsG.MD Hogeweij, P. Mantica, G. Gorini, J. de Kloe, N.JL Cardozo, R. T. P. Team
JournalPlasma Physics and Controlled Fusion
Date PublishedOct
ISBN Number0741-3335

In the Rijnhuizen Tokamak Project (RTP) plasmas with electron cyclotron heating (ECH), a transient rise of the core T-e is observed when hydrogen pellets are injected tangentially to induce fast cooling of the peripheral region. The core T-e rise is a sharp function of the normalized power deposition radius (rho (dep)). The strongest effect (deltaT(e) up to 80%) is observed when rho (dep) is just inside the q = 1 surface, whereas only modest effects are seen with larger or smaller rho (dep). The rise is due to both a steepening of the T-e profile between the q = 1 and q = 2 surfaces, and a peaking inside rho (dep).



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