Skip to main content

HIGH-POWER MILLIMETREWAVE TRANSMISSION SYSTEMS AND COMPONENTS FOR ELECTRON CYCLOTRON HEATING OF FUSION PLASMAS

  • Conference paper
  • First Online:
Quasi-Optical Control of Intense Microwave Transmission

Abstract

At the Institute for Plasma Research at the University of Stuttgart, high-power millimetre wave transmission systems for electron cyclotron heating (ECRH) and current drive (ECCD) of fusion plasmas are developed. Present work concentrates on the 140 GHz, 10 MW CW ECRH system for the stellarator W7-X [1] which is currently built at the Max-Planck-Institute for Plasma Physics (IPP) in Greifswald. There, the millimetre wave power of 10 gyrotrons will be transmitted fully optically via two multi-beam waveguides (MBWG)

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 259.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 329.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 329.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Erckmann, V. et al.: The W7-X project: Scientific basis and technical realization. Proc. 17th IEEE/NPSS Symposium on Fusion Engineering, San Diego, USA (1997). Ed. IEEE, Piscataway, NJ 1998, 40 – 48.

    Google Scholar 

  2. Kasparek, W. et al.: ECRH and ECCD for the stellarator W7-X. In Strong Microwaves in Plasmas 1999, ed. A. G. Litvak, Inst. of Appl. Physics, Nizhny Novgorod (1999), 185–204.

    Google Scholar 

  3. Leuterer, F. et al.,: Plans for a new ECRH system for ASDEX-Upgrade. Fusion Eng. and Design 66 – 68 (2003), 537–542.

    Article  Google Scholar 

  4. Dammertz G. et al.: Development of a 140-GHz, 1-MW Continuous wave gyrotron for the W7-X Stellarator, IEEE Trans. Plasma Science, PS-30(2002), 808–818.

    Article  ADS  Google Scholar 

  5. Empacher, L., et al.: Design of the 140 GHz/10 MWCW ECRH system for the stellarator W7- X. In Fusion Technology 1996, Elsevier Science B. V. Amsterdam (1997), 541–544.

    Google Scholar 

  6. H. Hailer, G. Dammertz, V. Erckmann, G. Gantenbein, F. Hollmann, W. Kasparek, W. Leonhardt, M. Schmid, P. G. Schüller, M. Thumm, M. Weissgerber: Mirror development for the 140 GHz ECRH system of the Stellarator W7-X. Fusion Eng. and Design 66–68(2003), 639 – 644.

    Article  Google Scholar 

  7. Kasparek, W., A. Fernandez, F. Hollmann, and R. Wacker: Measurement of ohmic loss of metallic reflectors at 140 GHz by a 3-mirror resonator technique. Int. J. Infrared and Millimetre Waves 22(2001) 1695–1707.

    Article  Google Scholar 

  8. Goldsmith, P. F.: Quasi-optical Systems. IEEE Press, Chapman and Hall, Publishers, New York (1998) ISBN 0-7803-3439–6.

    Google Scholar 

  9. Empacher, L., Kasparek, W.: Analysis of a multiple-beam waveguide for free-space transmission of microwaves. IEEE Trans. Antennas Propagat. AP-49(2001) 483–493.

    Article  ADS  Google Scholar 

  10. M. Thumm and W. Kasparek: Passive high-power microwave components. IEEE Trans. Plasma Science, PS-30(2002) 755–786.

    Article  ADS  Google Scholar 

  11. Empacher, L. et al.: New developments and tests of high power transmission components for ECRH on ASDEX-Upgrade and W7-AS. Proc. 20th Int. Conf. on Infrared and Millimeter Waves, Lake Buena Vista (Orlando), 1995, 473–474.

    Google Scholar 

  12. J. Shi and W. Kasparek: A grating coupler for in-situ alignment of a gaussian beam–principle, design and low-power test. IEEE Trans. Antennas Propagat. (2004) in press.

    Google Scholar 

  13. W. Kasparek, H. Idei, S. Kubo, and T. Notake: Beam Waveguide Reflector with Integrated Direction-Finding Antenna for In-Situ Alignment. Int. J. Infrared and Millimeter Waves 24(2003) 451–472.

    Google Scholar 

  14. Gantenbein, G., L. Empacher, V. Erckmann, F. Hollmann, W. Kasparek, M. Weißgerber and H. Zohm: Simulations and Experiments on a multi-beam waveguide ECRH transmission system. Proceedings of the 20th Symp. on Fusion Technology, Eds. B. Beaumont, P. Libeyre, B. de Gentile, G. Tonon. Ass. EURATOM-CEA Cadarache, France, Vol. I, (1998) 423 – 426.

    Google Scholar 

  15. V. I. Belousov, E. V. Koposova, I. M. Orlova et al., in Gyrotrons, ed. V. I. Flyagin, Institute of Applied. Physics, Gorky, USSR, 1989.

    Google Scholar 

  16. Y. L. Kok and N. C. Gallagher: Relative phases of electromagnetic waves diffracted by a perfectly conducting rectangular-grooved grating. J. Opt. Soc. Am. A5(1988), 65 –73.

    Article  ADS  Google Scholar 

  17. D. Wagner, G. Grünwald, F. Leuterer, F. Monaco, M. Münich, H. Schütz, F. Ryter, R. Wilhelm, H. Zohm, T. Franke, G. Dammertz, H. Heidinger, K. Koppenburg, M. Thumm, X. Yang, W. Kasparek, G Gantenbein, H. Hailer, G. G. Denisov, A. Litvak, V. Zapevalov: Status of the New ECRH System for ASDEX Upgrade. Proc. of the 13th Joint Workshop on ECE and ECRH (EC-13), May 2004, Nizhny Novgorod, Russia, http://www. ec13. iapras. ru/

    Google Scholar 

  18. G. Gantenbein, M. Grünert, E. Holzhauer, W. Kasparek and R. Wacker: Characteristics of broadband polarizers. To be published (2004).

    Google Scholar 

  19. L. A. Semenov, and A. T. Rivlin: Transmission of images through optical waveguides. Laser Focus Feb. 1981, 82–84.

    Google Scholar 

  20. S. V. Kuzikov: Wavebeam multiplication phenomena in RF power distribution systems of high-energy linear accellerators. Int. J. Infrared MillimeterWaves, 19(1998) 1523–1539.

    Article  Google Scholar 

  21. R. Prater, H. J. Grunloh, C. P. Moeller, J. L. Doane, R. A. Olstad, M. A. Makowski, and R. W. Harvey, “A design study for the ECH launcher for ITER”, Proc. 10th Joint Workshop on ECE and ECRH, Ameland, The Netherlands, 1997, ed. by T. Donne and A. G. A. Verhoeven, World Scientific, Singapoore, 1997, ISBN 981-02-3219–5, 531–540.

    Google Scholar 

  22. A. V. Chirkov, G. G. Denisov, W. Kasparek, and D. Wagner: Simulation and experimental study of a remote wave beam steering system. Proc. of the 23rd Int. Conf. on Infrared and MillimeterWaves, Colchester 1998, eds. T. J. Parker and S. R. P. Smith, ISBN 0–9533839, 250–251.

    Google Scholar 

  23. W. Kasparek, G. Gantenbein, B. Plaum, R. Wacker, A. V. Chirkov, G. G. Denisov, S. V. Kuzikov, K. Ohkubo, F. Hollmann, D. Wagner: Performance of a remote steering antenna for ECRH/ECCD applications in ITER using four-wall corrugated square waveguide. Nucl. Fusion 43(2003), 1505–1512.

    Article  ADS  Google Scholar 

  24. K. Takahashi, C. Moeller, K. Sakamoto, K. Hayashi, T. Imai: High power transmission experiment of remote steering launcher, Fusion Eng. and Design 65(2004), 589–598.

    Article  Google Scholar 

  25. G. Gantenbein, V. Erckmann, W. Kasparek, B. Plaum, K. Schwörer, M. Grünert, F. Hollmann, L. Jonitz, H. Laqua, G. Michel, F. Noke, F. Purps, A. Bruschi, F. Gandini, S. Cirant, A. G. A. Verhoeven et al: High-power tests of a remote steering launcher mock-up at 140 GHz. Proc. of the Joint Workshop on ECE and ECRH, May 2004, Nizhny Novgorod, Russia, http://www. ec13. iapras. ru/.

    Google Scholar 

  26. A. G. A. Verhoeven, M. P. A. van Asselen, W. A. Bongers, B. S. Q. Elzendoorn, M. F. Graswinckel, R. Heidinger, P. Hellingmann, and D. M. S. Ronden: The ITER Remote Steering ECW Upper-Port Launcher. Proc. of the 28th Int. Conf. on Infrared and Millimeter Waves, Otsu, Japan, Oct 2003, ed. N. Hiromoto (2003), 379–380.

    Google Scholar 

  27. B. Plaum, E. Holzhauer, and W. Kasparek: Optimization of a frequency diplexer based on the Talbot effect in oversized rectangular waveguides. Int. J. Infrared and Millimeter Waves 24(2003), 311–326.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Consortia

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2005 Springer

About this paper

Cite this paper

Kasparek, W. et al. (2005). HIGH-POWER MILLIMETREWAVE TRANSMISSION SYSTEMS AND COMPONENTS FOR ELECTRON CYCLOTRON HEATING OF FUSION PLASMAS. In: Hirshfield, J.L., Petelin, M.I. (eds) Quasi-Optical Control of Intense Microwave Transmission. NATO Science Series II: Mathematics, Physics and Chemistry, vol 203. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3638-8_18

Download citation

Publish with us

Policies and ethics