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Physics of Plasmas / Volume 2 / Issue 5
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Phys. Plasmas 2, 1648 (1995); http://dx.doi.org/10.1063/1.871313 (4 pages)

Flow shear induced fluctuation suppression in finite aspect ratio shaped tokamak plasma

T. S. Hahm1 and K. H. Burrell2

1Princeton University, Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543
2General Atomics, P.O. Box 85608, San Diego, California 92186‐9784

(Received 18 November 1994; accepted 18 January 1995)

The suppression of turbulence by the E×B flow shear and parallel flow shear is studied in an arbitrary shape finite aspect ratio tokamak plasma using the two point nonlinear analysis previously utilized in a high aspect ratio tokamak plasma [Phys. Plasmas 1, 2940 (1994)]. The result shows that only the E×B flow shear is responsible for the suppression of flute‐like fluctuations. This suppression occurs regardless of the plasma rotation direction and is, therefore, relevant for the very high (VH) mode plasma core as well as for the high (H) mode plasma edge. Experimentally observed in–out asymmetry of fluctuation reduction behavior can be addressed in the context of flux expansion and magnetic field pitch variation on a given flux surface. The adverse effect of neutral particles on confinement improvement is also discussed in the context of the charge exchange induced parallel momentum damping. © 1995 American Institute of Physics.  

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KEYWORDS and PACS

Keywords

SHEAR FLOW, ASDEX TOKAMAK, FLUCTUATIONS, ASPECT RATIO, TURBULENCE, TOKAMAK DEVICES, PLASMA CONFINEMENT, ROTATING PLASMA

PACS

  • 52.35.Ra

    Plasma turbulence

  • 52.35.Qz

    Microinstabilities (ion-acoustic, two-stream, loss-cone, beam-plasma, drift, ion- or electron-cyclotron, etc.)

  • 52.25.Gj

    Fluctuation and chaos phenomena

  • 52.55.Fa

    Tokamaks, spherical tokamaks

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.871313

PUBLICATION DATA

ISSN

1070-664X (print)  
1089-7674 (online)

  1. F. Wagner, G. Becker, K. Behringer, D. Campbell, A. Eberhagen, W. Engelhardt, G. Fussmann, O. Gehre, J. Gerhardt, G. v. Vierke, G. Haas, M. Huang, F. Karger, M. Keilhacker, O. Kluber, M. Kornherr, K. Lackner, G. Lisitano, G. G. Lister, H. M. Mayer, D. Meisel, E. R. Muller, H. Murmann, H. Niedermeyer, W. Poschenrieder, H. Rapp, H. Rohr, F. Schneider, G. Siller, E. Speth, A. Stbler, K. H. Steuer, G. Venus, O. Vollmer, and Z. Yu, Phys. Rev. Lett. 49, 1408 (1982).
  2. K. H. Burrell, T. N. Carlstrom, E. J. Doyle, D. Finkenthal, R. Gohil, R. J. Groebner, D. L. Hillis, J. Kim, H. Matsumoto, R. A. Moyer, T. H. Osborne, C. L. Rettig, W. A. Peebles, T. L. Rhodes, H. St. John, R. D. Stambaugh, M. R. Wade, and J. G. Watkins, Plasma Phys. Controlled Fusion 34, 1859 (1992). [Inspec] [ISI]
  3. K. H. Burrell, E. J. Doyle, P. Gohil, R. J. Groebner, J. Kim, R. J. La Haye, L. L. Lao, R. A. Moyer, T. H. Osborne, W. A. Peebles, C. L. Rettig, T. H. Rhodes, and D. M. Thomas, Phys. Plasmas 1, 1536 (1994PHPAEN000001000005001536000001).
  4. H. Biglari, P. H. Diamond, and P. W. Terry, Phys. Fluids B 2, 1 (1990PFBPEI000002000001000001000001).
  5. K. C. Shaing, E. C. Crume, Jr., and W. A. Houlberg, Phys. Fluids B 2, 1492 (1990PFBPEI000002000006001492000001).
  6. T. S. Hahm, Phys. Plasmas 1, 2940 (1994PHPAEN000001000009002940000001). [ISI]
  7. T. L. Rhodes, R. J. Taylor, E. J. Doyle, N. C. Luhmann, Jr., and W. A. Peebles, Nucl. Fusion 33, 1787 (1993). [Inspec] [ISI]
  8. F. Wagner, Plasma Phys. Controlled Fusion 36, A319 (1994). [Inspec] [ISI]
  9. E. A. Frieman and L. Chen, Phys. Fluids 25, 502 (1982PFLDAS000025000003000502000001).
  10. T. H. Dupree, Phys. Fluids 15, 334 (1972PFLDAS000015000002000334000001).
  11. P. W. Terry and P. H. Diamond, Phys. Fluids 28, 1419 (1985PFLDAS000028000005001419000001).
  12. K. C. Shaing, Phys. Plasmas 1, 219 (1994PHPAEN000001000002000219000001). [ISI]
  13. T. S. Hahm and P. H. Diamond, Phys. Fluids 30, 133 (1987PFLDAS000030000001000133000001).
  14. C. L. Rettig and T. L. Rhodes (private communications, 1994).
  15. K. H. Burrell, M. E. Austin, T. N. Carlstrom, S. Coda, E. J. Doyle, P. Gohil, R. J. Groebner, J. Kim, R. J. La Haye, L. L. Lao, J. Lohr, R. A. Moyer, T. H. Osborne, W. A. Peebles, C. L. Rettig, T. L. Rhodes, and D. M. Thomas, in Proceedings of the Fifteenth International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Seville, Spain, September 1994 (International Atomic Energy Agency, Vienna, in press), Paper No. IAEA-CN-60/A-2-I-5.
  16. L. L. Lao, J. R. Ferron, T. S. Taylor, K. H. Burrell, V. S. Chan, M. S. Chu, J. C. Deboo, E. J. Doyle, C. M. Greenfield, R. J. Groebner, R. A. James, E. A. Lazarus, T. H. Osborne, H. St. John, E. J. Strait, S. J. Thompson, A. D. TurnbulL, D. Wroblewski, H. Zohm, and the DUI-D Team, Phys. Rev. Lett. 70, 3435 (1993). [ISI] [MEDLINE]
  17. K. Toi, K. Kawahata, S. Morita, T. Watari, R. Kumazawa, K. Ida, A. Ando, Y. Oka, M. Sakamoto, Y. Hamada, K. Adati, R. Ando, T. Aoki, S. Kidekuma, S. Krokura, O. Kaneko, A. Karita, T. Kawamoto, Y. Kawasumi, T. Kuroda, K. Masai, K. Narihara, Y. Ogawa, K. Ohkubo, S. Okajima, T. Osaki, M. Sasao, K. N. Sato, T. Seki, F. Shimpo, H. Takahashi, S. Tanahashi, Y. Taniguchi, and T. Tsuzuki, Phys. Rev. Lett. 64, 1895 (1990). [MEDLINE]
  18. S. P. Hirshman and D. J. Sigmar, Nucl. Fusion 21, 1079 (1981). [Inspec] [ISI]
  19. J. Kim, K. H. Burrell, P. Gohil, R. J. Groebner, Y. B. Kim, H. E. St. John, R. P. Seraydarian, and M. E. Wade, Phys. Rev. Lett. 72, 2199 (1994). [ISI] [MEDLINE]
  20. F. L. Hinton (private communications, 1994).
  21. A. S. Ware, P. H. Diamond, H. Biglari, B. A. Carreras, L. A. Charlton, J.-N. Leboeuf, and A. J. Wootton, Phys. Fluids B 4, 877 (1992PFBPEI000004000004000877000001). [ISI]
  22. M. A. Beer and T. S. Hahm, Phys. Fluids B 4, 2567 (1992PFBPEI000004000008002567000001). [ISI]



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