title: High-resolution tangential absolute extreme ultraviolet arrays for radiated power density measurements on NSTX-U.
abstract: 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.
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: L
authors.initials: L
authors.lastname: Delgado-Aparicio
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Bell
authors.affiliation: MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA.
authors.forename: I
authors.initials: I
authors.lastname: Faust
authors.affiliation: The Johns Hopkins University, Baltimore, Maryland 21209, USA.
authors.forename: K
authors.initials: K
authors.lastname: Tritz
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: A
authors.initials: A
authors.lastname: Diallo
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: S P
authors.initials: SP
authors.lastname: Gerhardt
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: T A
authors.initials: TA
authors.lastname: Kozub
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: B P
authors.initials: BP
authors.lastname: LeBlanc
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: B C
authors.initials: BC
authors.lastname: Stratton