Three New Extreme Ultraviolet Spectrometers on NSTX-U for Impurity Monitoring

Weller, M. E.; Beiersdorfer, P. ; Soukhanovskii, V.; Magee, E. W.; Scotti, F.
Issue date: 2016
Rights:
Creative Commons Attribution 4.0 International (CC BY)
Cite as:
Weller, M. E., Beiersdorfer, P., Soukhanovskii, V., Magee, E. W., & Scotti, F. Three New Extreme Ultraviolet Spectrometers on NSTX-U for Impurity Monitoring [Data set]. Princeton Plasma Physics Laboratory, Princeton University. https://doi.org/10.11578/1366746
@electronic{weller_m_e_unknown,
  author      = {Weller, M. E. and
                Beiersdorfer, P. and
                Soukhanovskii, V. and
                Magee, E. W. and
                Scotti, F.},
  title       = {{Three New Extreme Ultraviolet Spectromet
                ers on NSTX-U for Impurity Monitoring}},
  publisher   = {{Princeton Plasma Physics Laboratory, Pri
                nceton University}},
  url         = {https://doi.org/10.11578/1366746}
}
Description:

Three extreme ultraviolet (EUV) spectrometers have been mounted on the National Spherical Torus Experiment-Upgrade (NSTX-U). All three are flat-field grazing-incidence spectrometers and are dubbed X-ray and Extreme Ultraviolet Spectrometer (8 ñ 70 ≈), Long-Wavelength Extreme Ultraviolet Spectrometer (190 ñ 440 ≈), and Metal Monitor and Lithium Spectrometer Assembly (MonaLisa, 50 ñ 220 ≈). XEUS and LoWEUS were previously implemented on NSTX to monitor impurities from low- to high-Z sources and to study impurity transport while MonaLisa is new and provides the system increased spectral coverage. The spectrometers will also be a critical diagnostic on the planned laser blow-off (LBO) system for NSTX-U, which will be used for impurity edge and core ion transport studies, edge-transport code development, and benchmarking atomic physics codes.

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