High-resolution tangential absolute extreme ultraviolet arrays for radiated power density measurements on NSTX-U

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

DOI:https://doi.org/10.1063/1.4894835· OSTI ID:22303704

Delgado-Aparicio, L.; Bell, R. E.; Diallo, A.; Gerhardt, S. P.; Kozub, T. A.; LeBlanc, B. P.; Stratton, B. C. ^[1]; Faust, I. ^[2]; Tritz, K. ^[3]

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1. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540 (United States)
2. MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139 (United States)
3. The Johns Hopkins University, Baltimore, Maryland 21209 (United States)

The radiated-power-density diagnostic on the equatorial midplane for the NSTX-U tokamak will be upgraded to measure the radial structure of the photon emissivity profile with an improved radial resolution. This diagnostic will enhance the characterization and studies of power balance, impurity transport, and MHD. The layout and response expected of the new system is shown for different plasma conditions and impurity concentrations. The effect of toroidal rotation driving poloidal asymmetries in the core radiation from high-Z impurities is also addressed.

• OSTI ID: 22303704
• 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
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABUNDANCE
ASYMMETRY
EXTREME ULTRAVIOLET RADIATION
MAGNETOHYDRODYNAMICS
NSTX DEVICE
PHOTONS
PLASMA
PLASMA IMPURITIES
POLOIDAL FIELD DIVERTORS
POWER DENSITY
RESOLUTION