title: Multi-energy SXR cameras for magnetically confined fusion plasmas (invited).
abstract: A compact multi-energy soft x-ray camera has been developed for time, energy and space-resolved measurements of the soft-x-ray emissivity in magnetically confined fusion plasmas. Multi-energy soft x-ray imaging provides a unique opportunity for measuring, simultaneously, a variety of important plasma properties (Te, nZ, ΔZeff, and ne,fast). The electron temperature can be obtained by modeling the slope of the continuum radiation from ratios of the available brightness and inverted radial emissivity profiles over multiple energy ranges. Impurity density measurements are also possible using the line-emission from medium- to high-Z impurities to separate the background as well as transient levels of metal contributions. This technique should be explored also as a burning plasma diagnostic in-view of its simplicity and robustness.
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: L F
authors.initials: LF
authors.lastname: Delgado-Aparicio
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: J
authors.initials: J
authors.lastname: Maddox
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: N
authors.initials: N
authors.lastname: Pablant
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: K
authors.initials: K
authors.lastname: Hill
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: M
authors.initials: M
authors.lastname: Bitter
authors.affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02141, USA.
authors.forename: J E
authors.initials: JE
authors.lastname: Rice
authors.affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02141, USA.
authors.forename: R
authors.initials: R
authors.lastname: Granetz
authors.affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02141, USA.
authors.forename: A
authors.initials: A
authors.lastname: Hubbard
authors.affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02141, USA.
authors.forename: J
authors.initials: J
authors.lastname: Irby
authors.affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02141, USA.
authors.forename: M
authors.initials: M
authors.lastname: Greenwald
authors.affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02141, USA.
authors.forename: E
authors.initials: E
authors.lastname: Marmar
authors.affiliation: The Johns Hopkins University, Baltimore, Maryland 21218, USA.
authors.forename: K
authors.initials: K
authors.lastname: Tritz
authors.affiliation: The Johns Hopkins University, Baltimore, Maryland 21218, USA.
authors.forename: D
authors.initials: D
authors.lastname: Stutman
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: B
authors.initials: B
authors.lastname: Stratton
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
authors.forename: P
authors.initials: P
authors.lastname: Efthimion