The prospect for fuel ion ratio measurements in ITER by collective Thomson scattering

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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We show that collective Thomson scattering (CTS) holds the potential to become a new diagnostic principle for measurements of the fuel ion ratio, nT/nD, in ITER. Fuel ion ratio measurements will be important for plasma control and machine protection in ITER. Measurements of ion cyclotron structures in CTS spectra have been suggested as the basis for a new fuel ion ratio diagnostic which would be well suited for reactor environments and capable of providing spatially resolved measurements in the plasma core. Such measurements were demonstrated in recent experiments in the TEXTOR tokamak. Here we conduct a sensitivity study to investigate the potential measurement accuracy of a CTS fuel ion ratio diagnostic on ITER. The study identifies regions of parameter space in which CTS can be expected to provide useful information on plasma composition, and we find that a CTS fuel ion ratio diagnostic could meet the ITER measurement requirements for a standard ELMy H-mode discharge.
Original languageEnglish
JournalNuclear Fusion
Publication date2012
Volume52
Journal number2
Pages023011
ISSN0029-5515
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2

Keywords

  • Plasma physics, Nuclear physics, Instrumentation and measurement
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