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Measurements of the oscillating fields and the time-averaged forces in rotating magnetic field current drive

Published online by Cambridge University Press:  13 March 2009

G. A. Collins
Affiliation:
Australian Nuclear Science and Technology Organisation, Lucas Heights Research Laboratories, Private Mail Bag 1, Menai NSW 2234, Australia
G. Durance
Affiliation:
Australian Nuclear Science and Technology Organisation, Lucas Heights Research Laboratories, Private Mail Bag 1, Menai NSW 2234, Australia
J. Tendys
Affiliation:
Australian Nuclear Science and Technology Organisation, Lucas Heights Research Laboratories, Private Mail Bag 1, Menai NSW 2234, Australia

Abstract

Measurement of the RF (radio-frequency) magnetic field about the equatorial plane of the rotamak has enabled the distribution of the oscillating currents to be derived. The time-averaged forces, produced by the interaction of these currents with the oscillating field, have been estimated. In the standard field-reversed configuration there is a radial force, which helps to confine the plasma pressure, and a toroidal force, which drives the equilibrium current. In compact tokamak configurations there is an additional poloidal force, which produces a diamagnetic current. As the toroidal field increases, penetration of the RF fields improves owing to the excitation of a whistler wave mode. The connection between the rotating magnetic field technique and fast wave current drive is explained.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1988

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References

REFERENCES

Ando, R., Kako, E., Ogawa, Y. & Watari, T. 1986 Nucl. Fusion, 26, 1619.CrossRefGoogle Scholar
Bellan, P. M. 1985 Phys. Rev. Lett. 54, 1381.CrossRefGoogle Scholar
Bertram, W. K. 1987 J. Plasma Phys. 37, 423.CrossRefGoogle Scholar
Bertram, W. K. 1988 Mode beating in j × B current drive. Plasma Phys. Contr. Fusion. (To be published.)Google Scholar
Collins, G. A., Durance, G., Hogg, G. R., Tendys, J. & Watterson, P. A. 1988 Nucl. Fusion, 28, 255.CrossRefGoogle Scholar
Donnelly, I. J., Bertram, W. K., Collins, G. A. & Watterson, P. A. 1987 Proceedings of the 8th U.S. Compact Toroid Symposium, University of Maryland, June 1987 (ed. De Silva, A. W. & Goldenbaum, G. C.) p. 202.Google Scholar
Durance, G., Hogg, G. R., Tendys, J. & Watterson, P. A. 1987 Plasma Phys. Contr. Fusion, 29, 227.CrossRefGoogle Scholar
Durance, G., Jessup, B. L., Jones, I. R. & Tendys, J. 1982 Phys. Rev. Lett. 48, 1252.CrossRefGoogle Scholar
Durance, G. & Jones, I. R. 1986 Phys. Fluids, 29, 1196.CrossRefGoogle Scholar
Dutch, M. & McCarthy, A. L. 1986 Plasma Phys. Contr. Fusion, 28, 695.CrossRefGoogle Scholar
Fukuda, M. 1978 J. Phys. Soc. Jpn, 45, 283.CrossRefGoogle Scholar
Fukuda, M., Matsuura, K., Hirano, K., Mohri, A. & Fukao, M. 1976 J. Phys. Soc. Jpn, 41, 1376.CrossRefGoogle Scholar
Goree, J., Ono, M., Colestock, P., Horton, R., McNeill, D. & Park, H. 1985 Phys. Rev. Lett. 55, 1669.CrossRefGoogle Scholar
Hirano, K., Matsuura, K. & Mohri, A. 1971 Phys. Lett. A36, 215.CrossRefGoogle Scholar
Hotta, E., Suzuki, M., Ohta, H. & Hayashi, I. 1985 Jpn J. Appl. Phys. 24, 11.CrossRefGoogle Scholar
Hugrass, W. N. 1979 Production of plasma currents using transverse rotating magnetic fields. Ph.D. thesis, Flinders University of South Australia.Google Scholar
Hugrass, W. N. & Grimm, R. C. 1981 J. Plasma Phys. 26, 455.CrossRefGoogle Scholar
Hugrass, W. N., Jones, I. R., McKenna, K. F., Phillips, M. G. R., Storer, R. G. & Tuczek, H. 1980 Phys. Rev. Lett. 44, 1676.CrossRefGoogle Scholar
Hugrass, W. N., Jones, I. R. & Phillips, M. G. R. 1979 Nucl. Fusion, 19, 1546.CrossRefGoogle Scholar
Hugrass, W. N., Jones, I. R. & Phillips, M. G. R. 1981 J. Plasma Phys. 26, 465.CrossRefGoogle Scholar
Jones, I. R. 1986 Comments Plasma Phys. Contr. Fusion, 10, 115.Google Scholar
Jones, I. R. & Hugrass, W. N. 1981 J. Plasma Phys. 26, 441.CrossRefGoogle Scholar
Jones, I. R., Turley, M. D. E., Wedding, J. E., Durance, G., Hogg, G. R. & Tendys, J. 1987 Aust. J. Phys. 40, 157.CrossRefGoogle Scholar
Kikunaga, T., Hotta, E. & Hayashi, I. 1982 Jpn J. Appl. Phys. 21, 1657.CrossRefGoogle Scholar
McWilliams, R. & Platt, R. C. 1986 Phys. Rev. Lett. 56, 835.CrossRefGoogle Scholar
Ohkubo, K. et al. 1986 Phys. Rev. Lett. 56, 2040.CrossRefGoogle Scholar
Thonemann, P. C., Cowhig, W. T. & Davenport, P. A. 1952 Nature, 169, 34.CrossRefGoogle Scholar
Watterson, P. A. 1988 J. Plasma Phys. 40, 109.CrossRefGoogle Scholar