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The Non-Imaging Flux Collector as a Compact ECE Antenna for ITER

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Diagnostics for Experimental Thermonuclear Fusion Reactors 2

Abstract

The characteristics of flux collectors based on nonimaging optical elements (Winston cones with circular aperture) have been tested in the laboratory in order to check the possibility of employing these elements for Electron Cyclotron Emission (ECE) diagnostics on ITER. In particular the effects of diffraction on the achievable spatial resolution and on the concentrator-lightpipe coupling have been verified by antenna pattern measurements at microwave frequencies.

While the directivity properties turned out compatible with the spatial resoulution required for the ECE spectral survey, cross-polarisation measurements pointed out the need to develop Winston cones with square or rectangular aperture.

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References

  1. P. Buratti, O. Tudisco, and M. Zerbini, A broadband light collection system for ECE diagnostics on the FTU tokamak, Infrared Phys., 34, 533 (1993).

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  2. W.T. Welford and R. Winston, The Optics of Nonimaging Concentrators, Academic Press, New York (1978).

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  4. P. Buratti, M. Zerbini, P. de Bernardis, M. de Petris, Flux Collectors For ECE Diagnostics On ITER. Proceedings of Tenth Joint Workshop on ECE and ECRH Ameland (The Netherlands), April 1997.

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Author information

Authors and Affiliations

  1. Max-Plank-Institut fur Plasmaphysik, EURATOM-IPP Ass., Boltzmannstr. 2, 85748, Garching, Germany

    H. Hartfuss

  2. Associaz. EURATOM-ENEA sulla Fusione, CR Frascati, CP 65, 00044, Italy

    M. Zerbini & P. Buratti

  3. Dip. di Fisica, Universita’ di Roma, Piazza A. Moro 2, 00185, Rome, Italy

    P. de Bernardis & M. De Petris

Authors
  1. H. Hartfuss
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  2. M. Zerbini
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  3. P. Buratti
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  4. P. de Bernardis
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  5. M. De Petris
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Editor information

Editors and Affiliations

  1. JET Joint Undertaking, Abingdon, Oxfordshire, England

    Peter E. Stott

  2. University of Milan, Milan, Italy

    Giuseppe Gorini , Paolo Prandoni  & Elio Sindoni ,  & 

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© 1998 Springer Science+Business Media New York

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Hartfuss, H., Zerbini, M., Buratti, P., de Bernardis, P., De Petris, M. (1998). The Non-Imaging Flux Collector as a Compact ECE Antenna for ITER. In: Stott, P.E., Gorini, G., Prandoni, P., Sindoni, E. (eds) Diagnostics for Experimental Thermonuclear Fusion Reactors 2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5353-3_20

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  • DOI: https://doi.org/10.1007/978-1-4615-5353-3_20

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-7442-8

  • Online ISBN: 978-1-4615-5353-3

  • eBook Packages: Springer Book Archive

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