TJ-II: Determination of the spatial periodicity of NBI-driven Alfvén Eigenmodes and study of its magnetic configuration dependence: Difference between revisions

TJ-II: Determination of the spatial periodicity of NBI-driven Alfvén Eigenmodes and study of its magnetic configuration dependence (view source)

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 Required resources:
 * Two days of good NBI plasma operation (aprox. 35 discharges each) with  reasonably good plasma density control.
-* Essential diagnostic systems: Mirnov coils (helical and poloidal arrays) and CNPA measurements are mandatory. Besides the common shot to shot diagnostics (ECE, Thomson, Interferometry, Radiation), all systems providing edge plasma profiles are needed. If possible, Doppler Reflectometer, HIBP. MSE would also be desirable to evaluate configuration  changes induced by non-totally balanced currents.
+* Essential diagnostic systems: Mirnov coils (helical and poloidal arrays) and CNPA measurements are mandatory. Besides the common shot to shot diagnostics (ECE, Thomson, Interferometry, Radiation), all systems providing edge plasma profiles are needed. If possible, Doppler Reflectometer, HIBP. MSE would also be desirable to evaluate configuration changes induced by non-totally balanced currents. FILD is also desirable to monitor fast ion losses and relate the level of losses to the Alfven activity.
 * Type of plasmas (heating configuration): NBI (both injectors) and ECH.
 * Specific requirements on wall conditioning if any: Good plasma density control usually means that the operation days must be allocated close after the boron/lihium conditioning of the vacuum vessel.