Calculation of impurity poloidal rotation from measured poloidal asymmetries in the toroidal rotation of a tokamak plasma

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4728097· OSTI ID:22093815

Chrystal, C. ^[1]; Burrell, K. H.; Groebner, R. J.; Kaplan, D. H. ^[2]; Grierson, B. A. ^[3]

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1. University of California-San Diego, La Jolla, California 92186-5608 (United States)
2. General Atomics, San Diego, California 92186-5608 (United States)
3. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States)

To improve poloidal rotation measurement capabilities on the DIII-D tokamak, new chords for the charge exchange recombination spectroscopy (CER) diagnostic have been installed. CER is a common method for measuring impurity rotation in tokamak plasmas. These new chords make measurements on the high-field side of the plasma. They are designed so that they can measure toroidal rotation without the need for the calculation of atomic physics corrections. Asymmetry between toroidal rotation on the high- and low-field sides of the plasma is used to calculate poloidal rotation. Results for the main impurity in the plasma are shown and compared with a neoclassical calculation of poloidal rotation.

• OSTI ID: 22093815
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ASYMMETRY
ATOMIC PHYSICS
CHARGE EXCHANGE
CORRECTIONS
DOUBLET-3 DEVICE
NEOCLASSICAL TRANSPORT THEORY
PLASMA DIAGNOSTICS
PLASMA IMPURITIES
RECOMBINATION
ROTATION
SPECTROSCOPY