Physics of Plasmas
Feedback | Help | Exit
Physics of Plasmas
   
 
 
 
Previous Article
High density limit in reversed field pinches
The fusion triple product depends on density, which is therefore a key parameter for the future fusion reactor. In this paper the high density limit is studied in the reversed field experiment (RFX-mo...
Next Article
Numerical simulations for cold layer formation in an inverse Z-pinch magnetized target fusion system
One-dimensional magnetohydrodynamic simulations have been performed to study cold layer formation in a magnetized target fusion system with an inverse Z-pinch target plasma. Three phases of cold layer...

A simple ideal magnetohydrodynamical model of vertical disruption events in tokamaks

Phys. Plasmas 16, 012506 (2009); doi:10.1063/1.3068467

Published 27 January 2009

You are not logged in to this journal. Log in

R. Fitzpatrick
Institute for Fusion Studies, Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA
A simple model of axisymmetric vertical disruption events (VDEs) in tokamaks is presented in which the halo current force exerted on the vacuum vessel is calculated directly from linear, marginally stable, ideal-magnetohydrodynamical (MHD) stability analysis. The basic premise of the model is that the halo current force modifies pressure balance at the edge of the plasma, and therefore also modifies ideal-MHD plasma stability. In order to prevent the ideal vertical instability, responsible for the VDE, from growing on the very short Alfvén time scale, the halo current force must adjust itself such that the instability is rendered marginally stable. The model predicts halo currents which are similar in magnitude to those observed experimentally. An approximate nonaxisymmetric version of the model is developed in order to calculate the toroidal peaking factor for the halo current force. ©2009 American Institute of Physics
History: Received 7 August 2008; accepted 18 December 2008; published 27 January 2009
Permalink: http://link.aip.org/link/?PHPAEN/16/012506/1
BUY THIS ARTICLE   (US$28)
Download PDF (218 kB) View Cart

KEYWORDS and PACS

Keywords
PACS
  • 52.35.Py
    Plasma macroinstabilities (hydromagnetic)
  • 52.30.Cv
    Plasma magnetohydrodynamics
  • 52.55.Tn
    Ideal and resistive plasma MHD modes; kinetic modes
  • 52.55.Fa
    Tokamaks
  • 52.40.Hf
    Plasma-material interactions; boundary layer effects
  • YEAR: 2009

RELATED DATABASES


To view database links for this article,
you need to log in.
To view database links for this article,
you need to log in.

PUBLICATION DATA

ISSN:
1070-664X (print)   1089-7674 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (14)
View in Separate Window/Tab
For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.
  1. J. A. Wesson, R. D. Gill, M. Hugon, F. C. Schuller, J. A. Snipes, D. J. Ward, D. V. Bartlett, D. J. Campbell, P. A. Duperrex, A. W. Edwards, R. S. Granetz, N. A. O. Gottardi, T. C. Hender, E. Lazzaro, P. J. Lomas, N. L. Cardozo, K. F. Mast, M. F. F. Nave, N. A. Salmon, P. Smeulders, P. R. Thomas, B. J. D. Tubbing, M. F. Turner, and A. Weller, Nucl. Fusion 29, 641 (1989).
  2. E. J. Strait, L. L. Lao, J. L. Luxon, and E. E. Reis, Nucl. Fusion 31, 527 (1991).
  3. K. Ioki, G. Johnson, K. Shimizu, and D. Williamson, Fusion Eng. Des. 27, 39 (1995).
  4. S. Mirnov, J. Wesley, N. Fujisawa, Yu. Gribov, O. Gruber, T. Hender, N. Ivanov, S. Jardin, J. Lister, F. Perkins, M. Rosenbluth, N. Sauthoff, T. Taylor, S. Tokuda, K. Yamazaki, R. Yoshino, A. Bondeson, J. Conner, E. Fredrickson, D. Gates, R. Granetz, R. La Haye, J. Neuhauser, F. Porcelli, D. E. Post, N. A. Uckan, M. Azumi, D. J. Campbell, M. Wakatani, W. M. Nevins, M. Shimada, and J. Van Dam, Nucl. Fusion 39, 2251 (1999).
  5. T. C. Hender, J. C. Wesley, J. Bialek, A. Bondeson, A. H. Boozer, R. J. Buttery, A. Garofalo, T. P. Goodman, R. S. Granetz, Y. Gribov, O. Gruber, M. Gryaznevich, G. Giruzzi, S. Günter, N. Hayashi, P. Helander, C. C. Hegna, D. F. Howell, D. A. Humphreys, G. T. A. Huysmans, A. W. Hyatt, A. Isayama, S. C. Jardin, Y. Kawano, A. Kellman, C. Kessel, H. R. Koslowski, R. J. La Haye, E. Lazzaro, Y. Q. Liu, V. Lukash, J. Manickam, S. Medvedev, V. Mertens, S. V. Mirnov, Y. Nakamura, G. Navratil, M. Okabayashi, T. Ozeki, R. Paccagnella, G. Pautasso, F. Porcelli, V. D. Pustovitov, V. Riccardo, M. Sato, O. Sauter, M. J. Schaffer, M. Shimada, P. Sonato, E. J. Strait, M. Sugihara, M. Takechi, A. D. Turnbull, E. Westerhof, D. G. Whyte, R. Yoshino, H. Zohm, and the ITPA MHD, Disruption, and Magnetic Control Topical Group, Nucl. Fusion 47, S128 (2007).
  6. T. H. Jensen and D. G. Skinner, Phys. Fluids B 2, 2358 (1990).
  7. J. P. Freidberg and F. Haas, Phys. Fluids 17, 440 (1974).
  8. R. Fitzpatrick, Phys. Plasmas 15, 092502 (2008).
  9. F. Hofmann, M. J. Dutch, D. J. Ward, M. Anton, I. Furno, J. B. Lister, and J.-M. Moret, Nucl. Fusion 37, 681 (1997).
  10. D. A. Humphreys and A. G. Kellman, Phys. Plasmas 6, 2742 (1999).
  11. R. Fitzpatrick, Phys. Plasmas 14, 062505 (2007).
  12. J. P. Freidberg, Ideal Magnetohydrodynamics (Springer, Berlin, 1987).
  13. L. E. Zakharov, Phys. Plasmas 15, 062507 (2008).
  14. V. Riccardo, T. C. Hender, P. J. Lomas, B. Alper, T. Bolzonella, P. de Vries, G. P. Maddison, and the JET EFDA Contributers, Plasma Phys. Controlled Fusion 46, 925 (2004).

CITING ARTICLES
For access to citing articles, you need to log in.
For access to citing articles, you need to Log in.


Copyright © American Institute of Physics