Interplay between confinement, turbulence and magnetic topology
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Interplay between confinement,turbulence and magnetic topology
Nils P. Basse, S. Zoletnik1, W. L. Rowan2 et al.
MIT Plasma Science and Fusion Center1KFKI-RMKI, Euratom Association, Budapest, Hungary2Fusion Research Center, University of Texas at Austin
This idea originates from density fluctuation studies of Wendelstein 7-AS plasmas with the LOTUS small-angle scattering diagnostic.
C-Mod Monday Meeting, 8th of December 2003
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EFIT equilibrium 1000620020
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EFIT equilibrium 1031203019
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Waveforms shot 103120301917 plasmas
To do: Finalise discharge development (current ramp, triangularities, qa 2.6 etc.). Scans of density, flattop current and ICRF power.
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Density fluctuations
Below: Localised spectrogram ofdensity fluctuations at 15 cm-1
in W7-AS.
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Magnetic fluctuations
Left: Spectrogram of Mirnovcoil in W7-AS.
Right: Spectrogram of coil24 in C-Mod.
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Thomson density profile
Profile for minimum qa = 2.75.
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Reflectometry
Spectrogram of the 132 GHz reflectometry channel (2.2 1020 m-3).