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Title: Three new extreme ultraviolet spectrometers on NSTX-U for impurity monitoring

Abstract

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 (XEUS, 8–70 Å), Long-Wavelength Extreme Ultraviolet Spectrometer (LoWEUS, 190–440 Å), and Metal Monitor and Lithium Spectrometer Assembly (MonaLisa, 50–220 Å). 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 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.

Authors:
; ; ;  [1]
  1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
22596506
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BENCHMARKS; EXTREME ULTRAVIOLET RADIATION; GRAZING; IMPURITIES; LASERS; LITHIUM; MONITORING; MONITORS; NSTX DEVICE; SPHERICAL CONFIGURATION; TRANSPORT THEORY; ULTRAVIOLET SPECTROMETERS; WAVELENGTHS; X RADIATION

Citation Formats

Weller, M. E., E-mail: weller4@llnl.gov, Beiersdorfer, P., Soukhanovskii, V. A., Magee, E. W., and Scotti, F. Three new extreme ultraviolet spectrometers on NSTX-U for impurity monitoring. United States: N. p., 2016. Web. doi:10.1063/1.4960755.
Weller, M. E., E-mail: weller4@llnl.gov, Beiersdorfer, P., Soukhanovskii, V. A., Magee, E. W., & Scotti, F. Three new extreme ultraviolet spectrometers on NSTX-U for impurity monitoring. United States. doi:10.1063/1.4960755.
Weller, M. E., E-mail: weller4@llnl.gov, Beiersdorfer, P., Soukhanovskii, V. A., Magee, E. W., and Scotti, F. Tue . "Three new extreme ultraviolet spectrometers on NSTX-U for impurity monitoring". United States. doi:10.1063/1.4960755.
@article{osti_22596506,
title = {Three new extreme ultraviolet spectrometers on NSTX-U for impurity monitoring},
author = {Weller, M. E., E-mail: weller4@llnl.gov and Beiersdorfer, P. and Soukhanovskii, V. A. and Magee, E. W. and Scotti, F.},
abstractNote = {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 (XEUS, 8–70 Å), Long-Wavelength Extreme Ultraviolet Spectrometer (LoWEUS, 190–440 Å), and Metal Monitor and Lithium Spectrometer Assembly (MonaLisa, 50–220 Å). 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 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.},
doi = {10.1063/1.4960755},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {11}
}