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

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 de...

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Veröffentlicht in:	Physics of fluids. B, Plasma physics Plasma physics, 1993-07, Vol.5 (7), p.2513-2518
Hauptverfasser:	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., Goldfinger, R. C., Goulding, R. H., Hanson, G. R., Hidalgo, C., Hiroe, S., Hirshman, S. P., Horton, L. D., Howe, H. C., Hutchinson, D. P., Isler, R. C., Jernigan, T. C., Ji, H., Kaneko, H., Kovrizhnykh, L. M., Kwon, M., Langley, R. A., Lee, D. K., Likin, K. M., Lyon, J. F., Ma, C. H., Menon, M. M., Mioduszewski, P. K., Motojima, O., Okada, H., Paul, S., Qualls, A. L., Rasmussen, D. A., Richards, R. K., Rome, J. A., Saltmarsh, M. J., Sarksyan, K. A., Sato, M., Schwelberger, J. G., Shaing, K. C., Shats, M. G., Shepard, T. D., Simpkins, J. E., Thomas, C. E., Uckan, T., Vander Sluis, K. L., Wade, M. R., Wing, W. R., Yamada, H., Zielinski, J. J.
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY 700310 - Plasma Confinement- (1992-) 700350 - Plasma Production, Heating, Current Drive, & Interactions- (1992-) CLOSED PLASMA DEVICES CONFINEMENT CYCLOTRON RESONANCE ELECTROMAGNETIC RADIATION ELECTRON CYCLOTRON-RESONANCE ELECTRON DENSITY ELECTRONS ELEMENTARY PARTICLES Exact sciences and technology FERMIONS Fluctuation and chaos phenomena Fluctuation phenomena FLUCTUATIONS LEPTONS Magnetic confinement and equilibrium MICROWAVE RADIATION Physics Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges PLASMA CONFINEMENT Plasma properties RADIATIONS RESONANCE SCATTERING STELLARATORS Stellarators, spheromaks, compact tori, bumpy tori, and other toroidal confinement devices Stellarators, torsatrons, heliacs, bumpy tori, and other toroidal confinement devices THERMONUCLEAR DEVICES TORSATRON STELLARATORS TRANSPORT Transport properties TRAPPED ELECTRONS VARIATIONS
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Zusammenfassung:	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, τ E ∝τgBν* −0.18β+0.3.
ISSN:	0899-8221 2163-503X
DOI:	10.1063/1.860737