Antenna design for fast ion collective Thomson scattering diagnostic for the international thermonuclear experimental reactor

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

doi:10.1063/1.3212567

Antenna design for fast ion collective Thomson scattering diagnostic for the international thermonuclear experimental reactor

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

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

Fast ion physics will play an important role for the international thermonuclear experimental reactor (ITER), where confined alpha particles will affect and be affected by plasma dynamics and thereby have impacts on the overall confinement. A fast ion collective Thomson scattering (CTS) diagnostic using gyrotrons operated at 60 GHz will meet the requirements for spatially and temporally resolved measurements of the velocity distributions of confined fast alphas in ITER by evaluating the scattered radiation (CTS signal). While a receiver antenna on the low field side of the tokamak, resolving near perpendicular (to the magnetic field) velocity components, has been enabled, an additional antenna on the high field side (HFS) would enable measurements of near parallel (to the magnetic field) velocity components. A compact design solution for the proposed mirror system on the HFS is presented. The HFS CTS antenna is located behind the blankets and views the plasma through the gap between two blanket modules. The viewing gap has been modified to dimensions 30 × 500 mm2 to optimize the CTS signal. A 1:1 mock-up of the HFS mirror system was built. Measurements of the beam characteristics for millimeter-waves at 60 GHz used in the mock-up agree well with the modeling.

Original language	English
Journal	Review of Scientific Instruments
Volume	80
Issue number	9
Pages (from-to)	093501
ISSN	0034-6748
DOIs	https://doi.org/10.1063/1.3212567
Publication status	Published - 2009

Bibliographical note

Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

Fusion energy

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http://link.aip.org/link/RSINAK/v80/i9/p093501/s1

Cite this

Leipold, F., Furtula, V., Salewski, M., Bindslev, H., Korsholm, S. B., Meo, F., Michelsen, P., Moseev, D., Nielsen, S. K., & Stejner Pedersen, M. (2009). Antenna design for fast ion collective Thomson scattering diagnostic for the international thermonuclear experimental reactor. Review of Scientific Instruments, 80(9), 093501. https://doi.org/10.1063/1.3212567

Leipold, Frank ; Furtula, Vedran ; Salewski, Mirko ; Bindslev, Henrik ; Korsholm, Søren Bang ; Meo, Fernando ; Michelsen, Poul ; Moseev, Dmitry ; Nielsen, Stefan Kragh ; Stejner Pedersen, Morten. / Antenna design for fast ion collective Thomson scattering diagnostic for the international thermonuclear experimental reactor. In: Review of Scientific Instruments. 2009 ; Vol. 80, No. 9. pp. 093501.

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abstract = "Fast ion physics will play an important role for the international thermonuclear experimental reactor (ITER), where confined alpha particles will affect and be affected by plasma dynamics and thereby have impacts on the overall confinement. A fast ion collective Thomson scattering (CTS) diagnostic using gyrotrons operated at 60 GHz will meet the requirements for spatially and temporally resolved measurements of the velocity distributions of confined fast alphas in ITER by evaluating the scattered radiation (CTS signal). While a receiver antenna on the low field side of the tokamak, resolving near perpendicular (to the magnetic field) velocity components, has been enabled, an additional antenna on the high field side (HFS) would enable measurements of near parallel (to the magnetic field) velocity components. A compact design solution for the proposed mirror system on the HFS is presented. The HFS CTS antenna is located behind the blankets and views the plasma through the gap between two blanket modules. The viewing gap has been modified to dimensions 30 × 500 mm2 to optimize the CTS signal. A 1:1 mock-up of the HFS mirror system was built. Measurements of the beam characteristics for millimeter-waves at 60 GHz used in the mock-up agree well with the modeling.",

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Antenna design for fast ion collective Thomson scattering diagnostic for the international thermonuclear experimental reactor. / Leipold, Frank; Furtula, Vedran; Salewski, Mirko; Bindslev, Henrik; Korsholm, Søren Bang; Meo, Fernando; Michelsen, Poul; Moseev, Dmitry; Nielsen, Stefan Kragh; Stejner Pedersen, Morten.

In: Review of Scientific Instruments, Vol. 80, No. 9, 2009, p. 093501.

Research output: Contribution to journal › Journal article › Research › peer-review

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AU - Leipold, Frank

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AU - Meo, Fernando

AU - Michelsen, Poul

AU - Moseev, Dmitry

AU - Nielsen, Stefan Kragh

AU - Stejner Pedersen, Morten

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AB - Fast ion physics will play an important role for the international thermonuclear experimental reactor (ITER), where confined alpha particles will affect and be affected by plasma dynamics and thereby have impacts on the overall confinement. A fast ion collective Thomson scattering (CTS) diagnostic using gyrotrons operated at 60 GHz will meet the requirements for spatially and temporally resolved measurements of the velocity distributions of confined fast alphas in ITER by evaluating the scattered radiation (CTS signal). While a receiver antenna on the low field side of the tokamak, resolving near perpendicular (to the magnetic field) velocity components, has been enabled, an additional antenna on the high field side (HFS) would enable measurements of near parallel (to the magnetic field) velocity components. A compact design solution for the proposed mirror system on the HFS is presented. The HFS CTS antenna is located behind the blankets and views the plasma through the gap between two blanket modules. The viewing gap has been modified to dimensions 30 × 500 mm2 to optimize the CTS signal. A 1:1 mock-up of the HFS mirror system was built. Measurements of the beam characteristics for millimeter-waves at 60 GHz used in the mock-up agree well with the modeling.

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