Development of the charge exchange recombination spectroscopy and the beam emission spectroscopy on the EAST tokamak

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4890408· OSTI ID:22303713

Li, Y. Y.; Fu, J.; Du, X. W.; Li, C. Y.; Yu, Y.; Wang, Q. P. ^[1]; Zhang, Y.; Yin, X. H.; Ye, M. Y.; Wan, B. N. ^[2]; Hellermann, M. von ^[3]; Shi, Y. J. ^[1]

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1. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026 (China)
2. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China)
3. FOM-Institute for Plasma Physics “Rijnhuizen,” Association EURATOM, Trilateral Euregio Cluster, 3430BE Nieuwegein (Netherlands)

Charge eXchange Recombination Spectroscopy (CXRS) and Beam Emission Spectroscopy (BES) diagnostics based on a heating neutral beam have recently been installed on EAST to provide local measurements of ion temperature, velocity, and density. The system design features common light collection optics for CXRS and BES, background channels for the toroidal views, multi-chord viewing sightlines, and high throughput lens-based spectrometers with good signal to noise ratio for high time resolution measurements. Additionally, two spectrometers each has a tunable grating to observe any wavelength of interest are used for the CXRS and one utilizes a fixed-wavelength grating to achieve higher diffraction efficiency for the BES system. A real-time wavelength correction is implemented to achieve a high-accuracy wavelength calibration. Alignment and calibration are performed. Initial performance test results are presented.

• OSTI ID: 22303713
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALIGNMENT
BEAMS
CALIBRATION
CHARGE EXCHANGE
DIFFRACTION
EMISSION SPECTROSCOPY
GRATINGS
HT-7U TOKAMAK
OPTICS
PERFORMANCE TESTING
RECOMBINATION
SIGNAL-TO-NOISE RATIO
SPECTROMETERS
TIME RESOLUTION
WAVELENGTHS