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Your search keyword '"D.H.J. Goodall"' showing total 5 results
Start Over Author "D.H.J. Goodall" Journal plasma physics and controlled fusion
5 results on '"D.H.J. Goodall"'

1. Latest JET results in deuterium and deuterium - tritium plasmas

Author

I. D. Young, N. Bainbridge, N. Dolgetta, R. A. M. Van der Linden, Philip Andrew, S. M. Scott, C. Caldwell-Nichols, R. Reichle, D. Campling, J. Mills, D.F.H. Start, P. G. Doyle, L.-G. Eriksson, A. Taroni, F.G. Rimini, T. Winkel, G. Corrigan, P. Breger, J. J. Davis, W. Zwingmann, M. Cox, L. Scibile, M. Gadeberg, B. Alper, S. Knipe, M.L. Watkins, P. Schild, C. D. Challis, A. Meigs, T. Lovegrove, C. Ingesson, E. Traneus, E. Deksnis, R. Mohanti, P. Miele, D.J. Ward, D. Stork, L. Galbiati, H. E. Clarke, M.A. Pick, B. Fischer, A. M. Edwards, L. Svensson, R. König, W. Parsons, M. De Benedetti, P. Noll, S. Papastergiou, N. C. Hawkes, B. Esposito, D. Ciric, G. McCracken, F. Hurd, A. Burt, R.D. Monk, J.K. Ehrenberg, J.P. Christiansen, A. Vadgama, J. M. Adams, R. D. Gill, J.G. Cordey, A. Gibson, Wolfgang Kerner, P. E. Stott, D. O'Brien, D. Bond, D. Young, T. Elevant, G. Vlases, M. Fichtmuller, R. Ostrom, M. von Hellermann, J. Tait, B. Haist, J.C.M. de Haas, P. Smith, R. Giannella, R. Claesen, N. P. Hawkes, M. Ottaviani, G. Fishpool, A. Howman, P. A. McCullen, A. C. Bell, A. Tabasso, R. Simonini, K. Guenther, N. Zornig, Q. Yu, V. Schmidt, N. Deliyanakis, J. How, Y. Baranov, I. Coffey, Michael Loughlin, S. A. Arshad, B. Patel, B. E. Keen, L. Lauro-Taroni, A. Kaye, P. Kupschus, D. Chiron, Shane Cooper, P. Chuilon, H. Altmann, M. Brandon, T. T. C. Jones, Y. Ul'Haq, D.V. Bartlett, F. Junique, F. Soldner, B. Ingram, C. Terella, R. Smith, G. Newbert, C. Lowry, B. Schunke, B.J.D. Tubbing, L. D. Horton, J. Jacquinot, N. G. Kidd, P. Card, J.P. Coad, P.R. Thomas, P. Barker, F. Nave, A. Sibley, P. Stangeby, T. P. Hughes, R. Parkinson, G.A. Cottrell, C. F. Maggi, S. E. Sharapov, R. Saunders, C. Gowers, A. Gondhalekar, J.A. Hoekzema, D. Wilson, A. Tanga, H. Brelen, E. Springmann, A.W. Edwards, S. J. Davies, K. Fullard, D. Martin, L. Roquemore, Ambrogio Fasoli, R. Walton, P.D. Morgan, A. Peacock, G. Murphy, J. G. Krom, W. Zhang, M. Salisbury, S. Clement, C. Gormezano, P. Nielsen, K. D. Lawson, G. Conway, M. J. Watson, D. Godden, O. Pogutse, G. Saibene, H. Guo, T. Wade, J. W. Farthing, J. L. Hemmerich, P. Svensson, S. Puppin, S. K. Erents, J.A. Dobbing, M. Johnson, P. Strachen, Henrik Bindslev, L. Rossi, P. Twyman, K. Blackler, H. Jaeckel, T. Bonicelli, S. E. Dorling, G. Matthews, M. L. Browne, B. Schokker, P. van Belle, A. C. Maas, J. F. Jaeger, H. Duquenoy, A. Rolfe, H. McBryan, P. Ageladarakis, Filippo Sartori, O.N. Jarvis, S. Ericsson, T. Hender, A. Paynter, T. Businaro, V. Riccardo, M. Huart, M. J. Mantsinen, F. Milani, A. Rossi, M. Keilhacker, P. Brennan, P. J. Lomas, Robin Barnsley, Annika Ekedahl, M. Endler, G. Radford, J. F. Junger, A. V. Chankin, P. Stubberfield, Jan Egedal, E. M. Jones, N. Davies, H.P.L. de Esch, B. Balet, D.D.R. Summers, C. Perry, A. Santagiustina, G. T. A. Huysmans, V. V. Parail, K. Thomsen, D. Bailey, J. Mart, A. Dines, M. Irving, G.J. Sadler, V.P. Bhatnagar, E. Righi, E. Oord, R. Stagg, A. C. C. Sips, W. J. Brewerton, R. T. Ross, H. D. Falter, F. Jensen, Sean Conroy, V. Marchese, Nicholas Watkins, M. Lennholm, J. Spence, M.F. Stamp, T. Budd, P. J. Harbour, M. Schmid, M. Buzio, B. Macklin, S. L. Dmitrenko, P. Smeulders, R. Middleton, D.H.J. Goodall, F.B. Marcus, J. Dorr, S. J. Cox, K.-D. Zastrow, A. Perevezentsev, A. J. Bickley, R. J. H. Pearce, D. N. Borba, M. Tabellini, J. Lingertat, E. Bertolini, R. Cusack, R. Lasser, J. Plancoulaine, N. Peacock, M. Wheatley, J. Ellis, M. Baronian, R. Prentice, A. Haigh, W. Obert, and C. J. Hancock

Subjects
Jet (fluid), Materials science, Plasma, Condensed Matter Physics, Ion, law.invention, Nuclear physics, Shear (sheet metal), Ignition system, Nuclear Energy and Engineering, Deuterium, Physics::Plasma Physics, law, Tritium, Neutron
Abstract

All major JET systems have been fully commissioned for D-T and the DTE1 series of experiments has started with the D-T fuel mixture and operating conditions foreseen for ITER. In the area of ITER physics, significant results have been produced in both D-D and D-T. In D-D, the LH threshold power database has been extended, the bounds on edge-electron temperature and density in ELMy H-modes have been defined and the advantages of Types I and III ELMy discharges have been compared. In D-T plasmas, the isotope effect on H-mode threshold power and transport has been determined so that a more accurate assessment can be made of the ignition margin and heating requirements for ITER. Trace tritium experiments have provided first particle transport measurements and an assessment of the ITER reference ion-cyclotron resonance-frequency heating scenarios has been started, In the area of fusion performance, record D-D neutron yields have been obtained by controlling the plasma and current profiles in hot ion ELM-free H-modes and optimized shear modes. In D-T, internal transport barriers have been readily established in optimized shear discharges and Alfven eigenmodes have been observed.

Published
1997
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2. Tight aspect ratio Tokamaks-theory and experiment

Author

J. Hugill, A. Sykes, K. J. Gibson, R. Duck, D.H.J. Goodall, M. F. Turner, J. W. Connor, T. C. Hender, H. R. Wilson, D.C. Robinson, M. J. Walsh, M Gryaznevish, and M. Valovic

Subjects
Nuclear physics, Physics, Tokamak, Nuclear Energy and Engineering, law, Small Tight Aspect Ratio Tokamak, Major disruption, Plasma, Magnetohydrodynamics, Condensed Matter Physics, Aspect ratio (image), law.invention
Abstract

The START (Small Tight Aspect Ratio Tokamak) experiment became operational in January 1991 at AEA Fusion Culham Laboratory. It is the only tokamak producing hot plasmas at aspect ratios as low as A=R/a approximately 1.3, and is providing valuable insight into the physical processes (such as toroidicity and trapping) involved at low aspect ratio. Three topics are discussed: equilibrium properties, including evidence of neo-classical and bootstrap effects; energy confinement studies; and MHD properties, including possible explanations for the apparent absence of the major disruption at low A.

Published
1993
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3. Recent results on the Dite Bundle Divertor

Author

P.C. Johnson, N. C. Hawkes, W.H.M. Clark, P.J. Harbour, G. Mezey, K.B. Axon, J.E. Bradley, B.A. Powell, J. Burt, G N McCracken, J. Hugill, G. Proudfoot, P. J. Lomas, D.H.J. Goodall, B. S. Mudford, S.J. Fielding, S.K. Erents, N. J. Peacock, and J. W. Partridge

Subjects
Convection, Tokamak, Materials science, Plasma parameters, Divertor, Torus, Plasma, Mechanics, Condensed Matter Physics, law.invention, Nuclear physics, Nuclear Energy and Engineering, Physics::Plasma Physics, law, Bundle, Beam (structure)
Abstract

Results from the DITE tokamak experiment with the Mk II bundle divertor and neutral beam heating are described. Particle and energy balances have been investigated and both show substantial fractions of the inputs flowing to the divertor. Observations of asymmetries in power deposition in the torus are presented. Measurements of the plasma parameters in the divertor scrape-off layer and in the diverted plasma are reported. Flow into the divertor is adequately described by convective processes.

Published
1984
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4. Studies of diverted plasmas and high density disruption in DITE

Author

G. F. Matthews, J.W.M. Paul, G.M. McCracken, J. Allen, D.N. Edwards, J. Hugill, D.H.J. Goodall, P.C. Johnson, N. J. Peacock, K.B. Axon, M. F. Turner, J. Pritchard, W. Millar, N. C. Hawkes, A. Sykes, S.J. Fielding, D. Guilhem, A B May, R Bissell, B.A. Powell, and P.J. Harbour

Subjects
Nuclear physics, Physics, Tokamak, Nuclear Energy and Engineering, law, Divertor, Bundle, High density, Plasma, Condensed Matter Physics, Ohmic contact, law.invention
Abstract

The latest analysis of results from the Bundle Divertor and prospects for application to a tokamak reactor are presented. The upgraded version of the machine, DITE IB is described briefly. Initial results of a programme to study the causes of disruption at high density in ohmic and beam-heated discharges are also described.

Published
1986
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5. The optimisation of limiter geometry to reduce impurity influx in Tokamaks

Author

G. F. Matthews, P.C. Stangeby, G.M. McCracken, Peter Sewell, D.H.J. Goodall, and C.S. Pitcher

Subjects
Materials science, Tokamak, chemistry.chemical_element, Geometry, Astrophysics::Cosmology and Extragalactic Astrophysics, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Condensed Matter Physics, law.invention, Nuclear Energy and Engineering, Deuterium, chemistry, law, Impurity, Condensed Matter::Superconductivity, Ionization, Limiter, Condensed Matter::Strongly Correlated Electrons, Atomic physics, Neutral particle, Carbon
Abstract

The authors discuss the impurity control limiter (ICL) which has an inverted geometry. The ICL shape is designed to direct the impurities towards the wall. They present the results from a two-dimensional neutral particle code which maps the ionisation of carbon physically sputtered by deuterons from a carbon limiter. This ionisation source is coupled to a one-dimensional impurity transport code which calculates the implied central impurity density. The results demonstrate that the ICL achieves impurity control in two ways. Firstly, many of the sputtered impurities directed towards the wall are not ionised and return to the wall as neutrals. Secondly, much of the ionisation which does occur is located in the scrape-off layer. They conclude that a reduction in central impurity density of a factor of 10 is possible in a Tokamak such as DITE provided that the limiter is the main source of impurities.

Published
1987
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