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

Dataset · Tue Nov 01 04:00:00 EDT 2016

DOI:https://doi.org/10.11578/1366746· OSTI ID:1366746

Weller, M.E. ^[1]; Beiersdorfer, P. ^[2]; Soukhanovskii, V. ^[2]; Magee, E.W. ^[2]; Scotti, F. ^[2]

---

1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Princeton Plasma Physics Laboratory
2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

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.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
• DOE Contract Number: AC02-09CH11466
• OSTI ID: 1366746
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Spectroscopy Extreme ultraviolet NSTX-U Impurity monitoring XEUS MonaLisa LoWEUS