Results 251 to 260 of about 22,670 (283)

Observation of confined current structure in JET high temperature pedestals and transient ELM suppression

, 2010
Solano, E.R., Lomas, P.J., Eich, T., Gerasimov, S., Giroud, C., Harting, D., Howell, D., Kocsis, G., Koslowski, H.R., Liang, Y., López-Fraguas, A., Nave, M.F.F., Nardon, E., Alper, B., Pérez. von Thun, C., Pinches, S.D., Rachlew, E., Rimini, F., Saarelma, S., Sirinelli, A., Thomsen, H., Xu, G.S., Zabeo, L., Zarzoso, D., Arnoux, G., JET EFDA, Boboc, A., Barrera, L., Belo, P., Beurskens, M.N.A., Brix, M., Crombe, K., de la Luna, E., Devaux, S.   +33 more
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Design and experimental demonstration of feedback adaptive RMP ELM controller toward complete long pulse ELM suppression on KSTAR

Physics of Plasmas, 2022
Operation of a fusion power plant requires robust edge localized mode (ELM) suppression simultaneously with high plasma performance. In this paper, we describe a novel feedback adaptive resonant magnetic perturbation (RMP) ELM controller designed to address this problem by achieving optimized ELM suppression through the advanced application of 3D RMPs.
R. Shousha, S. K. Kim, K. G. Erickson, S. H. Hahn, A. O. Nelson, S. M. Yang, J.-K. Park, J. Wai, Y. M. Jeon, J. H. Lee, J. Jang, D. Seo, E. Kolemen   +12 more
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ELM suppression by resonant magnetic perturbations at DIII-D

2009 23rd IEEE/NPSS Symposium on Fusion Engineering, 2009
Edge localized mode (ELM) suppression by resonant magnetic perturbations (RMPs) is being studied at DIII-D with ITER-similar plasma shapes and edge collisionalities. Suppression at low collisionality correlates with overlap of vacuum magnetic field islands in a quantified edge layer at moderate q.
M.J. Schaffer, T.E. Evans, R.A. Moyer, M.E. Fenstermacher   +3 more
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Investigation of background edge thermal transport in ELMing and ELM-suppressed H-modes in DIII-D

Physics of Plasmas, 2006
Thermal diffusivities are inferred in the plasma edge of a matched pair of DIII-D [J. Luxon, Nucl. Fusion 42, 614 (2002)] high confinement mode discharges, one with edge localized modes (ELMs) present and the other with ELMs suppressed by resonant magnetic perturbations.
Stacey, Weston M., Evans, T. E.
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ELM suppression by resonant magnetic perturbation in high-performance, stationary plasmas

Nuclear Fusion, 2010
The method of resonant magnetic perturbation (RMP) has been shown to suppress edge-localized modes (ELMs) in the high-performance, stationary (or ‘hybrid’) scenario in the DIII-D tokamak. Calculations of stability to peeling–ballooning (P–B) modes are shown to be consistent with the observed suppression of type-I ELMs, while the ELM suppression ...
B. Hudson, T.E. Evans, T.H. Osborne, C.C. Petty, P.B. Snyder, E.A. Unterberg   +5 more
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Study of in-vessel nonaxisymmetric ELM suppression coil concepts for ITER

Nuclear Fusion, 2008
Large Type-I edge-localized mode (ELM) heat pulses may limit the life of divertor targets in a burning plasma. Recent experiments show that pitch-resonant nonaxisymmetric magnetic perturbations of the plasma edge of 0.0005 or less of the main magnetic field offer a useful solution, but there is little room in the presently designed ITER for even small ...
M.J. Schaffer, J.E. Menard, M.P. Aldan, J.M. Bialek, T.E. Evans, R.A. Moyer   +5 more
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Enhancement of edge turbulence concomitant with ELM suppression during boron powder injection in EAST

Physics of Plasmas, 2021
A reproducible, quasi-stationary edge localized mode (ELM)-suppressed scenario was obtained over a wide range of plasma parameters by continuous injection of boron (B) powder into an upper-single null discharge in the experimental advanced superconducting tokamak [Sun et al., Nucl. Fusion 61, 014002 (2021)].
Z. Sun, R. Maingi, A. Diallo, W. Xu, Y. Z. Qian, K. Tritz, Y. Ye, C. L. Li, Z. Xu, Y. F. Wang, K. X. Ye, A. Bortolon, A. Nagy, L. Zhang, Y. M. Duan, Z. Y. Lu, H. Q. Wang, T. H. Shi, H. L. Zhao, W. Gao, J. C. Xu, R. Chen, M. Huang, G. Z. Zuo, G. S. Xu, X. Z. Gong, J. S. Hu   +26 more
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Design of a resonant magnetic perturbation ELM suppression system for JET

Fusion Engineering and Design, 2007
Abstract The suppression of ELMs with a resonant magnetic perturbation (RMP), as demonstrated in DIIID experiments [T. Evans, et al., Suppression of large edge localized modes with edge resonant magnetic fields in high confinement DIII-D plasmas, Nucl. Fusion 45 (2005) 595–607 [1] ], and widely published [K.H. Burrell, et al., Plasma Phys. Control.,
G. Agarici, M. Becoulet, E. Nardon, A. Saille, P.R. Thomas, J.M. Verger   +5 more
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Results from radiating divertor experiments with RMP ELM suppression and mitigation

Nuclear Fusion, 2011
The range in density and collisionality for which resonant magnetic perturbations (RMPs) are effective in suppressing edge-localized modes (ELMs) in the presence of a radiating divertor was found to be modest for representative H-mode plasmas in DIII-D.
T.W. Petrie, T.E. Evans, N.H. Brooks, M.E. Fenstermacher, J.R. Ferron, C.T. Holcomb, B. Hudson, A.W. Hyatt, T.C. Luce, C.J. Lasnier, S. Mordijck, R.A. Moyer, T.H. Osborne, P.A. Politzer, M.E. Rensink, M.J. Schaffer, P.B. Snyder, J.G. Watkins   +17 more
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Suppression Of Bacterial Leaf Scorch Symptoms In American Elm Through Oxytetracycline Microinjection

Arboriculture & Urban Forestry, 1985
AbstractAmerican elms with bacterial-associated leaf scorch (ELS) were injected with oxytetracycline (OTC) to determine if the antibiotic would cause a delay in symptom onset or a remission of symptoms. Degree of symptom expression and presence of fastidious, xylem-inhabiting bacteria were determined in August 1982.
S.J. Kostka, T.A. Tattar, J.L. Sherald
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