A high etendue spectrometer suitable for core charge eXchange recombination spectroscopy on ITER

R. J E Jaspers, M. Scheffer, A. Kappatou, N. C J Van Der Valk, M. Durkut, B. Snijders, O. Marchuk, W. Biel, G. I. Pokol, G. Erdei, S. Zoletnik, D. Dunai

Research output: Contribution to journalArticle

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Abstract

A feasibility study for the use of core charge exchange recombination spectroscopy on ITER has shown that accurate measurements on the helium ash require a spectrometer with a high etendue of 1mm 2sr to comply with the measurement requirements [S. Tugarinov, Rev. Sci. Instrum. 74, 2075 (2003)]10.1063/1.1537443. To this purpose such an instrument has been developed consisting of three separate wavelength channels (to measure simultaneously He/Be, C/Ne, and H/D/T together with the Doppler shifted direct emission of the diagnostic neutral beam, the beam emission (BES) signal), combining high dispersion (0.02 nm/pixel), sufficient resolution (0.2 nm), high efficiency (55%), and extended wavelength range (14 nm) at high etendue. The combined measurement of the BES along the same sightline within a third wavelength range provides the possibility for in situ calibration of the charge eXchange recombination spectroscopy signals. In addition, the option is included to use the same instrument for measurements of the fast fluctuations of the beam emission intensity up to 2 MHz, with the aim to study MHD activity.

Original languageEnglish
Article number10D515
JournalReview of Scientific Instruments
Volume83
Issue number10
DOIs
Publication statusPublished - Oct 2012

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charge exchange
Spectrometers
Spectroscopy
spectrometers
Ashes
Wavelength
spectroscopy
wavelengths
neutral beams
ashes
Magnetohydrodynamics
Helium
Pixels
pixels
helium
Calibration
requirements

ASJC Scopus subject areas

  • Instrumentation

Cite this

Jaspers, R. J. E., Scheffer, M., Kappatou, A., Van Der Valk, N. C. J., Durkut, M., Snijders, B., ... Dunai, D. (2012). A high etendue spectrometer suitable for core charge eXchange recombination spectroscopy on ITER. Review of Scientific Instruments, 83(10), [10D515]. https://doi.org/10.1063/1.4732058

A high etendue spectrometer suitable for core charge eXchange recombination spectroscopy on ITER. / Jaspers, R. J E; Scheffer, M.; Kappatou, A.; Van Der Valk, N. C J; Durkut, M.; Snijders, B.; Marchuk, O.; Biel, W.; Pokol, G. I.; Erdei, G.; Zoletnik, S.; Dunai, D.

In: Review of Scientific Instruments, Vol. 83, No. 10, 10D515, 10.2012.

Research output: Contribution to journalArticle

Jaspers, RJE, Scheffer, M, Kappatou, A, Van Der Valk, NCJ, Durkut, M, Snijders, B, Marchuk, O, Biel, W, Pokol, GI, Erdei, G, Zoletnik, S & Dunai, D 2012, 'A high etendue spectrometer suitable for core charge eXchange recombination spectroscopy on ITER', Review of Scientific Instruments, vol. 83, no. 10, 10D515. https://doi.org/10.1063/1.4732058
Jaspers RJE, Scheffer M, Kappatou A, Van Der Valk NCJ, Durkut M, Snijders B et al. A high etendue spectrometer suitable for core charge eXchange recombination spectroscopy on ITER. Review of Scientific Instruments. 2012 Oct;83(10). 10D515. https://doi.org/10.1063/1.4732058
Jaspers, R. J E ; Scheffer, M. ; Kappatou, A. ; Van Der Valk, N. C J ; Durkut, M. ; Snijders, B. ; Marchuk, O. ; Biel, W. ; Pokol, G. I. ; Erdei, G. ; Zoletnik, S. ; Dunai, D. / A high etendue spectrometer suitable for core charge eXchange recombination spectroscopy on ITER. In: Review of Scientific Instruments. 2012 ; Vol. 83, No. 10.
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