Review of Scientific Instruments · 2003 · 38 citations · 13 references
EngineeringEmissive Probe MeasurementsPlasma SciencePlasma PhysicsPlasma Edge PhysicsSciences TorusPlasma InstabilitiesMagnetic Confinement FusionPlasma Potential FluctuationsPlasma SimulationPlasma TheoryPlasma ConfinementInstrumentationPlasma DiagnosticsEdge Plasma RegionsPhysicsApplied Plasma PhysicCold Cylindrical ProbesApplied PhysicsPlasma Potential φPlPlasma Application
The plasma potential Φpl and its fluctuations Φ̃pl were measured by electron emissive probes in the edge plasma regions of two fusion experiments: the Instituto Superior Técnico Tokamak (ISTTOK) (Lisbon, Portugal), and the Czech Academy of Sciences Torus (CASTOR) tokamak (Prague, Czech Republic). Into ISTTOK, three emissive probes were inserted outside the last closed flux surface (LCFS) on different minor radii. In CASTOR, two emissive probes, poloidally separated, and two cold cylindrical probes, mounted on the same shaft, were used, which could be radially shifted outside and inside the LCFS. The advantages of a sufficiently emissive probe are that in principle Φpl and Φ̃pl can be measured directly, without being affected by electron temperature fluctuations or drifting electrons.
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Measurements with an emissive probe in the CASTOR tokamak
R. Schrittwieser, P. Balan, M. Hron et al. · Plasma Physics and Controlled Fusion · 2002 · 99 citations