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

Morten Stejner Pedersen, Søren Bang Korsholm, Stefan Kragh Nielsen, Mirko Salewski, Henrik Bindslev, Vedran Furtula, Frank Leipold, Poul Michelsen, Fernando Meo, Dmitry Moseev

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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
Volume52
Issue number2
Pages (from-to)023011
ISSN0029-5515
DOIs
Publication statusPublished - 2012

Keywords

  • Plasma physics
  • Nuclear physics
  • Instrumentation and measurement

Cite this

Stejner Pedersen, Morten ; Korsholm, Søren Bang ; Nielsen, Stefan Kragh ; Salewski, Mirko ; Bindslev, Henrik ; Furtula, Vedran ; Leipold, Frank ; Michelsen, Poul ; Meo, Fernando ; Moseev, Dmitry. / The prospect for fuel ion ratio measurements in ITER by collective Thomson scattering. In: Nuclear Fusion. 2012 ; Vol. 52, No. 2. pp. 023011.
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abstract = "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.",
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The prospect for fuel ion ratio measurements in ITER by collective Thomson scattering. / Stejner Pedersen, Morten; Korsholm, Søren Bang; Nielsen, Stefan Kragh; Salewski, Mirko; Bindslev, Henrik; Furtula, Vedran; Leipold, Frank; Michelsen, Poul; Meo, Fernando; Moseev, Dmitry.

In: Nuclear Fusion, Vol. 52, No. 2, 2012, p. 023011.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - The prospect for fuel ion ratio measurements in ITER by collective Thomson scattering

AU - Stejner Pedersen, Morten

AU - Korsholm, Søren Bang

AU - Nielsen, Stefan Kragh

AU - Salewski, Mirko

AU - Bindslev, Henrik

AU - Furtula, Vedran

AU - Leipold, Frank

AU - Michelsen, Poul

AU - Meo, Fernando

AU - Moseev, Dmitry

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

KW - Plasma physics

KW - Nuclear physics

KW - Instrumentation and measurement

U2 - 10.1088/0029-5515/52/2/023011

DO - 10.1088/0029-5515/52/2/023011

M3 - Journal article

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SP - 023011

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 2

ER -