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Start Over Author "Ruskov, E" Journal aip conference proceedings
3 results on '"Ruskov, E"'

1. Use of fast ion D-alpha diagnostics for understanding ICRF effects

Author

Podestà, M, Heidbrink, WW, Liu, D, Luo, Y, Ruskov, E, Bell, RE, Fredrickson, ED, Hosea, JC, Medley, SS, Burrell, KH, Choi, M, Pinsker, RI, and Harvey, RW

Subjects
Tokamak, ICRF, High harmonic fast wave, heating, current drive, fast ion D-alpha
Abstract

Combined neutral beam injection and fast wave heating at cyclotron harmonics accelerate deuterium fast ions in the National Spherical Torus Experiment (NSTX) and in the DIII-D tokamak. Acceleration above the injected energy is evident in fast-ion D-alpha (FIDA) and volume-average neutron data. The FIDA diagnostic measures spatial profiles of the accelerated fast ions. In DIII-D, the acceleration is at a 4th or 5th cyclotron harmonic; the maximum enhancement in the high-energy FIDA signal is 8-10 cm beyond the resonance layer. In NSTX, acceleration is observed at five harmonics (7-11) simultaneously; overall, the profile of accelerated fast ions is much broader than in DIII-D. The energy distribution predicted by the CQL3D Fokker-Planck code agrees fairly well with measurements in DIII-D. However, the predicted profiles differ from experiment, presumably because the current version of CQL3D uses a zero-banana-width model. © 2009 American Institute of Physics.

Published
2009

2. Control of Ion Gyroscale Fluctuations via Electrostatic Biasing and Sheared E×B Flow in the C-2 Field Reversed Configuration.

Author

Schmitz, L., Ruskov, E., Deng, B. H., Binderbauer, M., Tajima, T., Gota, H., and Tuszewski, M.

Subjects
*PLASMA boundary layers, *FIELD-reversed configuration, *PARTICLES, *ELECTROSTATICS, *DIAMAGNETISM
Abstract

Control of radial particle and thermal transport is instrumental for achieving and sustaining well-confined high-â plasma in a Field-Reversed Configuration (FRC). Radial profiles of low frequency ion gyro-scale density fluctuations (0.5 ⩽ kñs ⩽ 40), consistent with drift- or drift-interchange modes, have been measured in the scrape-off layer (SOL) and core of the C-2 Field-Reversed Configuration (FRC), together with the toroidal E×B velocity. It is shown here that axial electrostatic SOL biasing controls and reduces gyro-scale density fluctuations, resulting in very low FRC core fluctuation levels. When the radial E×B flow shearing rate decreases below the turbulence decorrelation rate, fluctuation levels increase substantially, concomitantly with onset of the n=2 instability and rapid loss of diamagnetism. Low turbulence levels, improved energy/particle confinement and substantially increased FRC life times are achieved when E×B shear near the separatrix is maintained via axial SOL biasing using an annular washer gun. [ABSTRACT FROM AUTHOR]

Published
2016
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3. Deuterium-tritium experiments on TFTR

Author

Bretz, N. L., primary, Adler, H., additional, Alling, P., additional, Ancher, C., additional, Anderson, H., additional, Anderson, J. W., additional, Arunasalam, V., additional, Ascione, G., additional, Barnes, C. W., additional, Barnes, G., additional, Batha, S., additional, Bateman, G., additional, Beer, M., additional, Bell, M. G., additional, Bell, R., additional, Bitter, M., additional, Blanchard, W., additional, Brunkhorst, C., additional, Budny, R., additional, Bush, C. E., additional, Camp, R., additional, Caorlin, M., additional, Carnevale, H., additional, Cauffman, S., additional, Chang, Z., additional, Cheng, C., additional, Chrzanowski, J., additional, Collins, J., additional, Coward, G., additional, Cropper, M., additional, Darrow, D. S., additional, Daugert, R., additional, DeLooper, J., additional, Dorland, W., additional, Dudek, L., additional, Duong, H., additional, Durst, R., additional, Efthimion, P. C., additional, Ernst, D., additional, Evensen, H., additional, Fisch, N., additional, Fisher, R., additional, Fonck, R. J., additional, Fredd, E., additional, Fredrickson, E., additional, Fromm, R., additional, Fu, G., additional, Fujita, T., additional, Furth, H. P., additional, Garzotto, V., additional, Gentile, C., additional, Gilbert, J., additional, Giola, J., additional, Gorelenkov, N., additional, Grek, B., additional, Grisham, L. R., additional, Hammett, G., additional, Hanson, G. R., additional, Hawryluk, R. J., additional, Heidbrink, W., additional, Herrmann, H. W., additional, Hill, K. W., additional, Hosea, J., additional, Hsuan, H., additional, Hughes, M., additional, Hulse, R., additional, Janos, A., additional, Jassby, D. L., additional, Jobes, F. C., additional, Johnson, D. W., additional, Johnson, L. C., additional, Kalish, M., additional, Kamperschroer, J., additional, Kesner, J., additional, Kugel, H., additional, Labik, G., additional, Lam, N. T., additional, LaMarche, P. H., additional, Lawson, E., additional, LeBlanc, B., additional, Levine, J., additional, Levinton, F. M., additional, Loesser, D., additional, Long, D., additional, Loughlin, M. J., additional, Machuzak, J., additional, Majeski, R., additional, Mansfield, D. K., additional, Marmar, E., additional, Marsala, R., additional, Martin, A., additional, Martin, G., additional, Mauel, M., additional, Mazzucato, E., additional, McCarthy, M. P., additional, McChesney, J., additional, McCormack, B., additional, McCune, D. C., additional, McGuire, K. M., additional, McKee, G., additional, Meade, D. M., additional, Medley, S. S., additional, Mikkelsen, D. R., additional, Mirnov, S. V., additional, Mueller, D., additional, Murakami, M., additional, Murphy, J. A., additional, Nagy, A., additional, Navratil, G. A., additional, Nazikian, R., additional, Newman, R., additional, Norris, M., additional, O’Connor, T., additional, Oldaker, M., additional, Ongena, J., additional, Osakabe, M., additional, Owens, D. K., additional, Park, H., additional, Park, W., additional, Parks, P., additional, Paul, S. F., additional, Pearson, G., additional, Perry, E., additional, Persing, R., additional, Petrov, M., additional, Phillips, C. K., additional, Phillips, M., additional, Pitcher, S., additional, Pysher, R., additional, Qualls, A. L., additional, Raftapoulos, S., additional, Ramakrishnan, S., additional, Ramsey, A., additional, Rasmunsen, D. A., additional, Redi, M. H., additional, Renda, G., additional, Rewoldt, G., additional, Roberts, D., additional, Rogers, J., additional, Rossmassler, R., additional, Roquemore, A. L., additional, Ruskov, E., additional, Sabbaugh, S. A., additional, Sasao, M., additional, Schilling, G., additional, Schivell, J., additional, Schmidt, G. L., additional, Scillia, R., additional, Scott, S. D., additional, Semenov, I., additional, Senko, T., additional, Sesnic, S., additional, Sissingh, R., additional, Skinner, C. H., additional, Snipes, J., additional, Stencel, J., additional, Stevens, J., additional, Stevenson, T., additional, Stodiek, W., additional, Strachan, J. D., additional, Stratton, B. C., additional, Swanson, J., additional, Synakowski, E., additional, Takahashi, H., additional, Tang, W., additional, Taylor, G., additional, Terry, J., additional, Thompson, M. E., additional, Tighe, W., additional, Timberlake, J. R., additional, Tobita, K., additional, Towner, H. H., additional, Tuszewski, M., additional, Von Halle, A., additional, Vannoy, C., additional, Viola, M., additional, Goeler, S. von, additional, Voorhees, D., additional, Walters, R. T., additional, Wester, R., additional, White, R., additional, Wieland, R., additional, Wilgen, J. B., additional, Williams, M., additional, Wilson, J. R., additional, Winston, J., additional, Wright, K., additional, Wong, K.-L., additional, Woskov, P., additional, Wurden, G. A., additional, Yamada, M., additional, Yoshikawa, S., additional, Young, K. M., additional, Zarnstorff, M. C., additional, Zavereev, V., additional, and Zweben, S. J., additional

Published
1995
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