Conceptual design of a divertor Thomson scattering diagnostic for NSTX-U

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4894001· OSTI ID:22303728

Soukhanovskii, V. A.; Allen, S. L. ^[1]; Carlstrom, T. N. ^[2]; LeBlanc, B. P.; Ono, M.; Stratton, B. C. ^[3]

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1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)
2. General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)
3. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

A conceptual design for a divertor Thomson scattering (DTS) diagnostic has been developed for the NSTX-U device to operate in parallel with the existing multipoint Thomson scattering system. Higher projected peak heat flux in NSTX-U will necessitate application of advanced magnetics geometries and divertor detachment. Interpretation and modeling of these divertor scenarios will depend heavily on local measurement of electron temperature, T{sub e}, and density, n{sub e}, which DTS provides in a passive manner. The DTS design for NSTX-U adopts major elements from the successful DIII-D DTS system including 7-channel polychromators measuring T{sub e} to 0.5 eV. If implemented on NSTX-U, the divertor TS system would provide an invaluable diagnostic for the boundary program to characterize the edge plasma.

• OSTI ID: 22303728
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; 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
DESIGN
DIVERTORS
DOUBLET-3 DEVICE
EVALUATION
HEAT FLUX
NSTX DEVICE
PLASMA DIAGNOSTICS
THOMSON SCATTERING