Fluctuation and modulation transport studies in the Advanced Toroidal Facility (ATF) torsatron

J. B. Wilgen, M. Murakami, J. H. Harris, T. S. Bigelow, R. A. Dory, B. A. Carreras, S. C. Aceto, D. B. Batchelor, L. R. Baylor, G. L. Bell, J. D. Bell, R. J. Colchin, E. C. Crume, N. Dominguez, J. L. Dunlap, G. R. Dyer, A. C. England, R. F. Gandy, J. C. Glowienka, R. C. GoldfingerR. H. Goulding, G. R. Hanson, C. Hidalgo, S. Hiroe, S. P. Hirshman, L. D. Horton, H. C. Howe, D. P. Hutchinson, R. C. Isler, T. C. Jernigan, H. Ji, H. Kaneko, L. M. Kovrizhnykh, M. Kwon, R. A. Langley, D. K. Lee, K. M. Likin, J. F. Lyon, C. H. Ma, M. M. Menon, P. K. Mioduszewski, O. Motojima, H. Okada, S. Paul, A. L. Qualls, D. A. Rasmussen, R. K. Richards, J. A. Rome, M. J. Saltmarsh, K. A. Sarksyan, M. Sato, J. G. Schwelberger, K. C. Shaing, M. G. Shats, T. D. Shepard, J. E. Simpkins, C. E. Thomas, T. Uckan, K. L. Vander Sluis, M. R. Wade, W. R. Wing, H. Yamada, J. J. Zielinski

Research output: Contribution to journalArticle

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Abstract

The Advanced Toroidal Facility (ATF) torsatron [Fusion Technol. 10, 179 (1986)] has completed experiments focusing on microwave scattering measurements of density fluctuations and transport studies utilizing the modulation of dimensionless parameters. Microwave scattering measurements of electron density fluctuations in the core of low-collisionality electron cyclotron heated (ECH) plasmas show features that might be evidence of trapped electron instabilities. Starting from gyro-Bohm scaling, the additional dependence of confinement on the dimensionless parameters ν* and β (collisionality and beta) has been investigated by modulating each of these parameters separately, revealing the additional favorable dependence, τE∝τ gBν*-0.18β+0.3.

Original languageEnglish (US)
Pages (from-to)2513-2518
Number of pages6
JournalPhysics of Fluids B
Volume5
Issue number7
DOIs
StatePublished - 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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    Wilgen, J. B., Murakami, M., Harris, J. H., Bigelow, T. S., Dory, R. A., Carreras, B. A., Aceto, S. C., Batchelor, D. B., Baylor, L. R., Bell, G. L., Bell, J. D., Colchin, R. J., Crume, E. C., Dominguez, N., Dunlap, J. L., Dyer, G. R., England, A. C., Gandy, R. F., Glowienka, J. C., ... Zielinski, J. J. (1993). Fluctuation and modulation transport studies in the Advanced Toroidal Facility (ATF) torsatron. Physics of Fluids B, 5(7), 2513-2518. https://doi.org/10.1063/1.860737