Imaging motional Stark effect measurements at ASDEX Upgrade

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4959873· OSTI ID:22596434

Ford, O. P.; Burckhart, A.; McDermott, R.; Pütterich, T.; Wolf, R. C. ^[1]

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1. Max-Planck Institut für Plasmaphysik, Greifswald/Garching (Germany)

This paper presents an overview of results from the Imaging Motional Stark Effect (IMSE) diagnostic obtained during its first measurement campaign at ASDEX Upgrade since installation as a permanent diagnostic. A brief overview of the IMSE technique is given, followed by measurements of a standard H-mode discharge, which are compared to equilibrium reconstructions showing good agreement where expected. The development of special discharges for the calibration of pitch angle is reported and safety factor profile changes during sawteeth crashes are shown, which can be resolved to a few percent due to the high sensitivity at good time resolution of the new IMSE system.

• OSTI ID: 22596434
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 EURATOM; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASDEX TOKAMAK
CALIBRATION
COMPARATIVE EVALUATIONS
EQUILIBRIUM
H-MODE PLASMA CONFINEMENT
IMAGES
INCLINATION
PITCHES
SAWTOOTH OSCILLATIONS
STARK EFFECT
TIME RESOLUTION