Scientific Commons: A. W. Leonard

Radiated power fractions above 90% have been achieved in DIII--D using impurity feedback control. Heat flux reductions up to a factor of 6 and confinement enhancements of 1.6 ITER-89P L--mode scaling...

Chapter 4: Power and particle control (2007)

Loarte, A., Lipschultz, B., Kukushkin, A. S., Matthews, G. F., Stangeby, P. C., Asakura, N., ...

Effect of Divertor Geometry on Fueling Profile of the Core Plasma in Low-Density, Ohmic Plasmas in ASDEX Upgrade and DIII-D (2007)

Groth, M., Brooks, N. H., Coster, D. P., Dux, R., Fenstermacher, M. E., Groebner, R. J., ...

Chapter 4: Power and particle control (2007)

Loarte, A., Lipschultz, B., Kukushkin, A. S., Matthews, G. F., Stangeby, P. C., Asakura, N., ...

Progress, since the ITER Physics Basis publication (ITER Physics Basis Editors et al 1999 Nucl. Fusion 39 2137-2664), in understanding the processes that will determine the properties of the plasma...

Survey of Type I ELM Dynamics Measurements (2006)

Leonard, A.W., Asakura, N., Boedo, J.A., Becoulet, M., Counsell, G.F., Eich, T., ...

Pedestal Conditions for Small ELM Regimes in Tokamaks (2006)

Oyama, N., Gohil, P., Horton, L.D., Hubbard, A.E., Hughes, J.W., Kamada, Y., ...

Survey of Type I ELM dynamics measurements (2006)

Leonard, A. W., Asakura, N., Boedo, J. A., Becoulet, M., Counsell, G. F., Eich, T., ...

This report summarizes Type I edge localized mode (ELM) dynamics measurements from a number of tokamaks, including ASDEX-Upgrade, DIII-D, JET, JT-60U and MAST, with the goal of providing guidance and...

Power deposition onto plasma facing components in poloidal divertor tokamaks during type-I ELMs and disruptions (2005)

Eich,T., Herrmann,A., Pautasso,G., Andrew,P., Asakura,N., Boedo,J. A., ...

Direct measurement of the impurity dynamics during an ELM cycle (2005)

Wade,M. R., Burrell,K. H., Hogan,J. T., Leonard,A. W., Osborne,T. H., Snyder,P., ...

Edge impurity dynamics during an edge-localized mode cycle on DIII-D (2005)

Wade,M. R., Burrell,K. H., Hogan,J. T., Leonard,A. W., Osborne,T. H., Snyder,P. B., ...

Power deposition onto plasma facing components in poloidal divertor tokamaks during type-I ELMs and disruptions (2005)

Eich, T., Herrmann, A., Pautasso, G., Andrew, P., Asakura, N., Boedo, J. A., ...

Direct measurement of the impurity dynamics during an ELM cycle (2005)

Wade, M. R., Burrell, K. H., Hogan, J. T., Leonard, A. W., Osborne, T. H., Snyder, P., ...

Edge impurity dynamics during an edge-localized mode cycle on DIII-D (2005)

Wade, M. R., Burrell, K. H., Hogan, J. T., Leonard, A. W., Osborne, T. H., Snyder, P. B., ...

Edge-localized mode dynamics and transport in the scrape-off layer of the DIII-D tokamak (2005)

Boedo, J.A., Rudakov, D.L., Hollmann, E.M., Gray, D.S., Burrell, K.H., Moyer, R.A., ...

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying...

Power deposition onto plasma facing components in poloidal divertor tokamaks during type-I ELMS and disruptions (2005)

Eich, T., Herrmann, A., Pautasso, G., Andrew, P., Asakura, N., Boedo, J. A., ...

A comparative analysis of the spatial and temporal characteristics of transient energy loads (ELMs and disruptions) on plasma facing components (PFCs) in present tokamak devices and their...

Measurement of Pressure-Gradient-Driven Currents in Tokamak Edge Plasmas (2004)

Thomas,D. M., Leonard,A. W., Lao,L. L., Osborne,T. H., Müller,H. W., Finkenthal,D. F.

Calculation of edge toroidal current density distributions from DIII-D lithium beam measurements using Ampère's law (2004)

Thomas,D. M., Leonard,A. W., Mueller,H. W.

Edge currents and stability in DIII-D (2004)

Thomas,D. M., Fenstermacher,M. E., Finkenthal,D., Groebner,R. J., Lao,L. L., Leonard,A. W., ...

Measurement of Pressure-Gradient-Driven Currents in Tokamak Edge Plasmas (2004)

Thomas, D. M., Leonard, A. W., Lao, L. L., Osborne, T. H., Müller, H. W., Finkenthal, D. F.

Calculation of edge toroidal current density distributions from DIII-D lithium beam measurements using Ampère's law (2004)

Thomas, D. M., Leonard, A. W., Mueller, H. W.

Edge currents and stability in DIII-D (2004)

Thomas, D. M., Fenstermacher, M. E., Finkenthal, D., Groebner, R. J., Lao, L. L., Leonard, A. W., ...

Characteristics of the H-mode pedestal and extrapolation to ITER (2003)

Osborne,T. H., Cordey,J. G., Groebner,R. J., Hatae,T., Hubbard,A., Horton,L. D., ...

The development of a predictive capability for the characteristics of the H-mode pedestal and ELMs is important in predicting tokamak reactor performance. The H-mode pedestal effects core confinement...

ELM-free stationary H-mode plasmas in the ASDEX Upgrade tokamak (2003)

Suttrop,W., Maraschek,M., Conway,G. D., Haas,G., Horton,L. D., ...

ELM-free H-mode plasmas with stationary plasma density and radiation level are obtained in the ASDEX Upgrade tokamak with large clearance between the last closed flux surface and the wall, and...

Experimental / theoretical comparisons of the turbulence in the scrape-off-layers of Alacator C-Mod, DIII-D, and NSTX (2003)

Terry,J. L., Zweben,S. J., Rudakov,D. L., Boedo,J. A., Hallatschek,K., Maqueda,R. J., ...

The intermittent turbulent transport in the scrape-off-layers of Alcator C-Mod, DIII-D, and NSTX is studied experimentally. On DIII-D the fluctuations of both density and temperature have strongly...

Edge localized modes in DIII-D high performance discharges (2003)

Turnbull,A. D., Lao,L. L., Osborne,T. H., Sauter,O., Strait,E. J., Taylor,T. S., ...

A new understanding of edge localized modes (ELMs) in tokamak discharges is emerging (Snyder P B et al 2002 Phys. Plasmas 9 2037), in which the ELM is an essentially ideal magnetohydrodynamic (MHD)...

Overview of ASDEX Upgrade results (2003)

Zohm,H., Angioni,C., Arslanbekov,R., Atanasiu,C., Becker,G., Becker,W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

Studies of ELM Heat Load, SOL Flow and Carbon Erosion from Existing Tokamak Experiments, and their Predictions to ITER (2003)

Asakura,N., Loarte,A., Porter,G., Philipps,V., Lipschultz,B., Kallenbach,A., ...

Three important physics issues for the ITER divertor design and operation are summarized based on the experimental and numerical work from multi-machine database (JET, JT-60U, ASDEX Upgrade, DIII-D,...

Characteristics of the H-mode pedestal and extrapolation to ITER (2003)

Osborne, T. H., Cordey, J. G., Groebner, R. J., Hatae, T., Hubbard, A., Horton, L. D., ...

The development of a predictive capability for the characteristics of the H-mode pedestal and ELMs is important in predicting tokamak reactor performance. The H-mode pedestal effects core confinement...

ELM-free stationary H-mode plasmas in the ASDEX Upgrade tokamak (2003)

Suttrop, W., Maraschek, M., Conway, G. D., Haas, G., Horton, L. D., ...

ELM-free H-mode plasmas with stationary plasma density and radiation level are obtained in the ASDEX Upgrade tokamak with large clearance between the last closed flux surface and the wall, and...

Experimental / theoretical comparisons of the turbulence in the scrape-off-layers of Alacator C-Mod, DIII-D, and NSTX (2003)

Terry, J. L., Zweben, S. J., Rudakov, D. L., Boedo, J. A., Hallatschek, K., Maqueda, R. J., ...

The intermittent turbulent transport in the scrape-off-layers of Alcator C-Mod, DIII-D, and NSTX is studied experimentally. On DIII-D the fluctuations of both density and temperature have strongly...

Edge localized modes in DIII-D high performance discharges (2003)

Turnbull, A. D., Lao, L. L., Osborne, T. H., Sauter, O., Strait, E. J., Taylor, T. S., ...

A new understanding of edge localized modes (ELMs) in tokamak discharges is emerging (Snyder P B et al 2002 Phys. Plasmas 9 2037), in which the ELM is an essentially ideal magnetohydrodynamic (MHD)...

Overview of ASDEX Upgrade results (2003)

Zohm, H., Angioni, C., Arslanbekov, R., Atanasiu, C., Becker, G., Becker, W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

Studies of ELM Heat Load, SOL Flow and Carbon Erosion from Existing Tokamak Experiments, and their Predictions to ITER (2003)

Asakura, N., Loarte, A., Porter, G., Philipps, V., Lipschultz, B., Kallenbach, A., ...

Three important physics issues for the ITER divertor design and operation are summarized based on the experimental and numerical work from multi-machine database (JET, JT-60U, ASDEX Upgrade, DIII-D,...

Transport by intermittency in the boundary of the DIII-D tokamak (2003)

Boedo, J.A., Rudakov, D.L., Moyer, R.A., McKee, George R., Colchin, R.J., Schaffer, M.J., ...

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying...

Overview of ASDEX upgrade results (2003)

Zohm, H., Angioni, C., Arslanbekov, R., Atanasiu, C., Becker, G., Becker, W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

Edge localized modes in DIII-D high performance discharges (2003)

Turnbull, A. D., Lao, L. L., Osborne, T. H., Sauter, O., Strait, E. J., Taylor, T. S., ...

A new understanding of edge localized modes (ELMs) in tokamak discharges is emerging (Snyder P B et al 2002 Phys. Plasmas 9 2037), in which the ELM is an essentially ideal magnetohydrodynamic (MHD)...

Effects of impurity seeding in DIII-D radiating mantle discharges (2002)

Jackson, G. L., Murakami, M., McKee, G. R., Baker, D. R., Boedo, J. A., La Haye, C. E., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/42/1/305

Edge localized modes and the pedestal: A model based on coupled peeling-ballooning modes (2002)

Snyder, P.B., Wilson, H.R., Ferron, J.R., Lao, L.L., Leonard, A.W., Osborne, T.H., ...

A model based on magnetohydrodynamic (MHD) stability of the tokamak plasma edge region is presented, which describes characteristics of edge localized modes (ELMs) and the pedestal. The model...

Predicted ELM Energy Loss and Power Loading in ITER-FEAT (2001)

Loarte, A., Saibene, G., Sartori, R., Janeschitz, G., Igitkhanov, Yu.L., Kukushkin, A.S., ...

Transport by intermittent convection in the boundary of the DIII-D tokamak (2001)

Boedo, J.A., Rudakov, D.L., Moyer, R.A., Krasheninnikov, S., Whyte, D.G., McKee, George R., ...

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying...

Riverine endosulfan concentrations in the Namoi River, Australia: link to cotton field runoff and macroinvertebrate population densities (2000)

Leonard, A.W., Hyne, R.V., Lim, R.P., Pablo, F.

Overview of H-Mode Studies in Diii-D (1994)

Groebner, R. J., Allen, S. L., Baker, D. R., Brooks, N. H., Buchenauer, D. A., Burrell, K. H., ...

A major portion of the DIII-D program includes studies of the L-H transition, of the VH-mode, of particle transport and control and of the power-handling capability of a divertor. Significant...

Edge currents and stability in DIII-D

Thomas,D. M., Fenstermacher,M. E., Finkenthal,D., Groebner,R. J., Lao,L. L., Leonard,A. W., ...

Edge currents and stability in DIII-D

Thomas, D. M., Fenstermacher, M. E., Finkenthal, D., Groebner, R. J., Lao, L. L., Leonard, A. W., ...

Effect of divertor geometry on the core plasma fueling profile and carbon content in low-density, Ohmic plasmas in ASDEX Upgrade and DIII-D

Groth, M., Porter, G.D., Rensink, M.E., Brooks, N.H., Coster, D.P., Fenstermacher, M.E., ...

Effect of Divertor Geometry on Fueling Profile and Carbon Content of the Core Plasma in Low-Density, Ohmic Plasmas in ASDEX Upgrade and DIII-D

Groth, M., Porter, G. D., Rensink, M. E., Brooks, N. H., Coster, D. P., Fenstermacher, M. E., ...

Comparison of the β dependence of micro-instabilities using linear gyrokinetic simulations

Vermare, L., Petty, C. C., McKee, G. R., Ryter, F., Ferron, J. R., Gröbner, R. J., ...

The role of the H-mode pedestal on global confinement in hybrid scenarios in DIII-D and ASDEX Upgrade

Maggi, C. F., Groebner, R. J., Angioni, C., Candy, J., Konz, C., Leonard, A. W., ...