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Journal Articles

Experimental tests of paleoclassical transport

Callen, J. D.*; Anderson, J. K.*; Arlen, T. C.*; Bateman, G.*; Budny, R. V.*; Fujita, Takaaki; Greenfield, C. M.*; Greenwald, M.*; Groebner, R. J.*; Hill, D. N.*; et al.

Nuclear Fusion, 47(11), p.1449 - 1457, 2007/11

 Times Cited Count:7 Percentile:27.89(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Progress in the ITER physics basis, 4; Power and particle control

Loarte, A.*; Lipschultz, B.*; Kukushkin, A. S.*; Matthews, G. F.*; Stangeby, P. C.*; Asakura, Nobuyuki; Counsell, G. F.*; Federici, G.*; Kallenbach, A.*; Krieger, K.*; et al.

Nuclear Fusion, 47(6), p.S203 - S263, 2007/06

 Times Cited Count:726 Percentile:96.49(Physics, Fluids & Plasmas)

Progress, since the ITER Physics Basis publication (1999), in understanding the processes that will determine the properties of the plasma edge and its interaction with material elements in ITER is described. Significant progress in experiment area: energy and particle transport, the interaction of plasmas with the main chamber material elements, ELM energy deposition on material elements and the transport mechanism, the physics of plasma detachment and neutral dynamics, the erosion of low and high Z materials, their transport to the core plasma and their migration at the plasma edge, retention of tritium in fusion devices and removal methods. This progress has been accompanied by the development of modelling tools for the physical processes at the edge plasma and plasma-materials interaction. The implications for the expected performance in ITER and the lifetime of the plasma facing materials are discussed.

Journal Articles

Multi-machine comparisons of H-mode separatrix densities and edge profile behaviour in the ITPA SOL and Divertor Physics Topical Group

Kallenbach, A.*; Asakura, Nobuyuki; Kirk, A.*; Korotkov, A.*; Mahdavi, M. A.*; Mossessian, D.*; Porter, G. D.*

Journal of Nuclear Materials, 337-339, p.381 - 385, 2005/03

 Times Cited Count:57 Percentile:96.27(Materials Science, Multidisciplinary)

Edge profile data for H-mode discharges in 6 tokamaks have been analysed with the main focus on the edge density profile as well as electron temperature and density gradient lengths and steep gradient zone widths. A uniform procedure of data treatment and assignment of the separatrix position via power balance allowed to put the multi-machine data on an even base. The machine size appears to be the leading parameter for the width of the steep edge transport barrier gradient zone, as well as for the temperature decay length at the separatrix. Effects associated with neutral penetration physics are visible in the edge density profile.

Journal Articles

Studies of ELM heat load, SOL flow and carbon erosion from existing Tokamak experiments, and projections for ITER

Asakura, Nobuyuki; Loarte, A.*; Porter, G.*; Philipps, V.*; Lipschultz, B.*; Kallenbach, A.*; Matthews, G.*; Federici, G.*; Kukushkin, A.*; Mahdavi, A.*; et al.

IAEA-CN-94/CT/P-01, 5 Pages, 2002/00

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, Alcator C-Mod and TEXTOR). (i) The energy load associated with Type-I ELMs is of great concern for the lifetime of the ITER divertor target. In order to understand the physics base of the scaling models, the ELM heat and particle transport to the divertor is investigated. Convective transport during ELMs plays an important role in heat transport to the divertor. (ii) Determination of the SOL flow pattern and the driving mechanism has progressed experimentally and numerically. Influences of the drift effects on the SOL and divertor plasma transport were discussed. (iii) Characteristics of chemical yield at two different deposited carbon surfaces, i.e. erosion- and redeposition-dominated areas, have been studied. Progress of understanding the chemical erosion is reviewed.

Journal Articles

Study of particle pumping characteristics for different pumping geometries in JT-60U and DIII-D divertors

Takenaga, Hidenobu; Sakasai, Akira; Kubo, Hirotaka; Asakura, Nobuyuki; Schaffer, M. J.*; Petrie, T. W.*; Mahdavi, M. A.*; Baker, D. R.*; Allen, S. L.*; Porter, G. D.*; et al.

Nuclear Fusion, 41(12), p.1777 - 1787, 2001/12

 Times Cited Count:21 Percentile:57.79(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Comparison of particle confinement in the high confinement mode plasmas with the edge localized mode of the Japan Atomic Energy Research Institute Tokamak-60 Upgrade and DIII-D tokamak

Takenaga, Hidenobu; Mahdavi, M. A.*; Baker, D. R.*

Physics of Plasmas, 8(5), p.1607 - 1611, 2001/05

 Times Cited Count:2 Percentile:7.58(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Reduction of recycling in DIII-D by degassing and conditioning of the graphite tiles

Jackson, G. L.*; Taylor, T. S.*; Allen, S. L.*; Ferron, J.*; Haas, G.*; Hill, D.*; Mahdavi, M. A.*; Nakamura, Hiroo; Osborne, T. H.*; Petersen, P. I.*; et al.

Journal of Nuclear Materials, 162-164, p.489 - 495, 1989/04

 Times Cited Count:26 Percentile:91.47(Materials Science, Multidisciplinary)

no abstracts in English

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