Advertisement

Application of microwave reflectometry for plasma density diagnostics in a reversed-field pinch machine

  • M. Moresco
  • R. O' Dubhghaill
  • E. Spada
Article

Abstract

The implementation of reflectometry as a means of measuring plasma density is examined in relation to the reversed-field pinch machine. The effects of magnetic shear and density fluctuations are studied. Ray-tracing and simulation results are presented and the proposed reflectometer system for the RFX reversed-field pinch machine is described.

Key words

wide-band reflectometry microwaves plasma reversed-fieldpinch magnetic shear 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Simonet F., “Measurement of Electron Density Profile by Microwave Reflectometry on Tokamaks”,Report EUR-CEA FC 1225 (1984).Google Scholar
  2. [2]
    Bottollier-Curtet H. and Ichtchenko G., “Microwave Reflectometry with the Extraordinary Mode on Tokamaks: Determination of the Electron Density Profile of Petula-B”,Rev. Sci. Instrum.,58, 539 (1987).Google Scholar
  3. [3]
    Hubbard A.E., Costley A.E. and Gowers C.W., “A Simple Fixed Frequency Reflectometer for Plasma Density Profile Measurements on JET”,Report JET-P (85) 32 (1985).Google Scholar
  4. [4]
    Manso M. et al., “A Microwave Reflectometric System for the ASDEX Tokamak”,Controlled Fusion and Plasma Heating (Proc. of 15th Europ. Conf). Pesic and Jacquinot Editors, Dubrovnik 1988, p. 1127.Google Scholar
  5. [5]
    Lehecka T. et al., “Results from the DIII-D Millimeter-Wave Reflectometer”,Controlled Fusion and Plasma Physics (Proc. of 16th Europ. Conf.). Segre, Knoepfel and Sindoni Editors, Venice 1989, p.123.Google Scholar
  6. [6]
    Anabitarte E. et al., “Determination of the Electron Density Profile and its Fluctuations by Broadband Microwave Reflectometry in the TJ-1 TokamakJ. Phys. D: Appl Phys.,21, 1384 (1988).Google Scholar
  7. [7]
    Sanchez J., Anabitarte E. and Navarro A. P., “Broadband Microwave Reflectometry on Wendelstein VII-AS Stellarator”,Controlled Fusion and Plasma Physics (Proc. 16th Europ. Conf.) Segre, Knoepfel and Sindoni Editors. Venice 1989, p. 1565.Google Scholar
  8. [8]
    Bodin H.A.B. and Newton A.A., “Reversed Field Pinch Research”,Nuclear Fusion,20, 1255 (1980).Google Scholar
  9. [9]
    Malesani G., “The RFX Experiment”,Int. School of Plasma Physics, “Piero Caldirola” Ortolani and Sindoni Editors, Varenna, 1987 p. 331.Google Scholar
  10. [10]
    Heald M.A., “Microwave Propagation in a Plasma with a Sheared Magnetic Field”,Plasma Physics,6, 617 (1964).Google Scholar
  11. [11]
    Brambilla M. and Moresco M., “Numerical Simulation of Reflectometry Density Measurements in a Reverse Field Pinch”,Report IPP 5/11, Garching 1986.Google Scholar
  12. [12]
    Brambilla M. and Moresco M., “The Influence of Mode Mixing on Reflectometry Density Measurements in a Reversed Field Pinch”,Plasma Physics and Controlled Fusion,29, 381 (1987).Google Scholar
  13. [13]
    Jacobson A., “Interferometric Measurements of Plasma Density Fluctuations”,Plasma Physics,23, 927 (1981).Google Scholar
  14. [14]
    Masamune S., “Density Fluctuations in a reversed-field pinch”,Physics of Fluids,31, 1231 (1988).Google Scholar
  15. [15]
    Spada E., Tesi di Dottorato, Universita' degli Studi di Padova, 1990.Google Scholar
  16. [16]
    Silver S., “Microwave, Antenna Theory and Design”, McGraw-Hill, New York 1962.Google Scholar

Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • M. Moresco
    • 1
  • R. O' Dubhghaill
    • 2
  • E. Spada
    • 3
  1. 1.University of PadovaItaly
  2. 2.University CollegeCorkIreland
  3. 3.Istituto Gas Ionizzati del CNRCorso Stati Unity4-PadovaItaly

Personalised recommendations