Scientific Commons: G. F. Matthews

The ITER reference materials have been tested separately in tokamaks, plasma simulators, ion beams and high heat flux test beds. In order to perform a fully integrated material test JET has launched...

Tungsten and beryllium armour development for the JET ITER-like wall project (2007)

Maier, H., Hirai, T., Rubel, M., Mertens, Ph., Greuner, H., Hopf, Ch., ...

For the ITER-like wall project at JET, the present main chamber CFC tiles will be exchanged with Be tiles and in parallel a fully tungsten-clad divertor will be prepared. Three R&D programmes were...

Material Erosion and Redeposition during the JET MkIIGB-SRP Divertor Campaign. Invited paper (2007)

Kirschner, A., Philipps, V., Balden, M., Bonnin, X., Brezinsek, S., Coad, J. P., ...

Improved radiation measurements on JET - First results from an upgraded bolometer system (2007)

Huber, A., McCormick, K., Andrew, P., De Baar, M. R., Beaumont, P., Dalley, S., ...

Chapter 4: Power and particle control (2007)

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

Upgraded bolometer system on JET for improved radiation measurements (2007)

Huber, A., McCormick, K., Andrew, P., Beaumont, P., Dalley, S., Fink, J., ...

Development of steady-state scenarios compatible with ITER-like wall conditions. Invited Paper (2007)

Litaudon, X., Arnoux, G., Beurskens, M., Brezinsek, S., Challis, C. D., Crisanti, F., ...

Divertor radiation distribution during ELMs in JET (2007)

Huber, A., Pitts, R.A., Philipps, V., Loarte, A., Andrew, P., Brezinsek, S., ...

Carbon migration during JET 13C experiments (2007)

Strachan, J.D., Coad, P., Corrigan, G., Spence, J., Matthews, G.F., Airila, M., ...

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...

R&D on full tungsten divertor and beryllium wall for JET ITER-like wall project (2007)

Hirai, T., Maier, H., Rubel, M., Mertens, Ph., Neu, R., Gauthier, E., ...

Material erosion and redeposition during the JET MkIIGB-SRP divertor campaign (2006)

Kirschner, A., Philipps, V., Balden, M., Bonnin, X., Brezinsek, S., Coad, J.P., ...

ELMs and disruptions in ITER: Expected Energy Fluxes on Plasma Facing Components from Multi-machine Experimental Extrapolations and Consequences for ITER Operation (2006)

Loarte, A., Saibene, G., Sartori, R., Campbell, D., Riccardo, V., Andrew, P., ...

Carbon Migration during JET 13C Injection Experiments (2006)

Strachan, J.D., Coad, J.P., Corrigan, G., Spence, J., Matthews, G.F., Likonen, J., ...

EDGE2D code simulations of SOL flows and in–out divertor asymmetries in JET (2005)

Kirnev, G. S., Corrigan, G., Coster, D., Erents, S. K., Matthews, G. F., Pitts, R. A.

The fine structure of ELMs in the scrape-off layer (2005)

Endler, M., García-Cortes, I., Hidalgo, C., Matthews, G.F., ASDEX Upgrade Team, JET Team

Power Exhaust on JET: an Overview of Dedicated Experiments (2005)

Fundamenski, W., Andrew, P., Eich, T., Matthews, G. F., Pitts, R. A., Riccardo, V., ...

Expected energy fluxes onto ITER Plasma Facing Components during disruption thermal quenches from multi-machine data comparisons (2005)

Loarte, A., Andrew, P., Matthews, G. F., Paley, J., Riccardo, V., Eich, T., ...

Integrated modelling of material migration and target plate power handling at JET (2005)

Coster, D.P., Bonnin, X., Chankin, A., Corrigan, G., Erents, S. K., Fundamenski, W., ...

Material erosion and migration in tokamaks. Invited paper (2005)

Pitts, R. A., Coad, J. P., Coster, D. P., Federici, G., Fundamenski, W., Horacek, J., ...

Impurity-seeded ELMy H-modes in JET, with high density and reduced heat load (2005)

Monier-Garbet, P., Andrew, Ph., Belo, P., Bonheure, G., Corre, Y., Crombe, K., ...

Methane screening in JET reverse field experiments (2005)

Strachan, J. D., Alper, B., Corrigan, G., Erents, S. K., Giroud, C., Korotkov, A., ...

JET plasmas with reverse magnetic field feature a different SOL flow than those with normal field. The observed carbon fuelling efficiency from injecting methane gas was similar in reverse and normal...

Material erosion and migration in tokamaks (2005)

Pitts, R. A., Coad, J. P., Coster, D. P., Federici, G., Fundamenski, W., Horacek, J., ...

The issue of first wall and divertor target lifetime represents one of the greatest challenges facing the successful demonstration of integrated tokamak burning plasma operation, even in the case of...

Edge and divertor physics with reversed toroidal field in JET (2005)

Pitts, R. A., Andrew, P., Bonnin, X., Chankin, A. V., Corre, Y., Corrigan, G., ...

Asymmetries are a ubiquitous feature of the scrape-off layer (SOL) and divertor plasmas in any tokamak and are thought to be driven primarily by a variety of drift flows, the directions of which...

EDGE2D code simulations of SOL flows and in-out divertor asymmetries in JET (2005)

Kirnev, G. S., Corrigan, G., Coster, D., Erents, S. K., Fundamenski, W., Matthews, G. F., ...

EDGE2D simulations show that high SOL flows can be generated when an additional radial convective transport is applied in the SOL and pedestal region along with a 'ballooning-like' poloidal variation...

The effect of field reversal on the JET MkIIGB-SRP divertor performance in L-mode density limit discharges (2005)

Huber, A., Rapp, J., Andrew, P., Coad, P., Corrigan, G., Erents, K., ...

The effect of field reversal on the JET MkIIGB-SRP divertor performance has been investigated in L-mode density limit discharges. These experiments show that the direction of the magnetic field has a...

ELM-averaged power exhaust on JET (2005)

Fundamenski, W., Pitts, R. A., Matthews, G. F., Riccardo, V., Sipila, S.

This paper describes experiments performed on JET over the past two years dedicated to characterizing ELM-averaged power exhaust (based on time-averaged divertor power deposition profiles), with an...

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...

Outer divertor target deposited layers during reversed magnetic field operation in JET (2005)

Andrew, P., Coad, J. P., Corre, Y., Eich, T., Herrmann, A., Matthews, G. F., ...

Divertor surface temperatures are significantly affected by the presence of deposited surface layers. This phenomenon can be used to monitor deposited layer evolution on a shot-by-shot basis. It was...

INSTITUTE OF PHYSICS PUBLISHING PLASMA PHYSICS AND CONTROLLED FUSION Plasma Phys. Control. Fusion 47 (2005) B303–B322 doi:10.1088/0741-3335/47/12B/S22 Material erosion and migration in tokamaks (2005)

R A Pitts, J P Coad, D P Coster, G Federici, W Fundamenski, J Horacek, ...

The issue of first wall and divertor target lifetime represents one of the greatest challenges facing the successful demonstration of integrated tokamak burning plasma operation, even in the case of...

Diverted tokamak carbon screening: scaling with machine size and consequences for core contamination (2004)

Strachan, J. D., Corrigan, G., Kallenbach, A., Matthews, G. F., Meister, H., Neu, R., ...

A comparison of experimental measurements and code results to determine flows in the JET SOL (2004)

Erents, S. K., Pitts, R. A., Fundamenski, W., Gunn, J. P., Matthews, G. F.

Two reciprocating probe systems, at the same poloidal position at the top of the JET torus but toroidally separated by 180degrees, have been used to measure parallel flow in the scrape-off layer...

Impurity-seeded plasma experiments on JET (2003)

Maddison, G. P., Brix, M., Budny, R., Charlet, M., Coffey, I., Cordey, J. G., ...

Scaling to larger tokamaks of high confinement plasmas with radiating edges, induced by impurities, is being studied through internationally collaborative experiments on JET. In campaigns till the...

Steady-state and transient power handling in JET (2003)

Matthews, G. F., Andrew, P., Eich, T., Fundamenski, W., Herrmann, A., Loarte, A., ...

Steady-state and transient power deposition profiles have been measured in the JET MIIGB divertor using improved diagnostic techniques involving the use of fast infrared (IR), thermocouples and...

The effect of ion orbit losses on JET edge plasma simulations (2003)

Matthews, G. F., Corrigan, G., Erents, K., Fundamenski, W., Kallenbach, A., Kurki-Suonio, T., ...

Ion orbit losses appear to be a prime candidate for explaining the narrow power deposition profiles in JET. In this paper we address the question as to whether the coupling of momentum from these...

Thermal effects of surface layers on divertor target plates (2003)

Andrew, P., Coad, A., Eich, T., Gauthier, E., Herrmann, A., Matthews, G. F., ...

Measurement of the heat flux to the divertor by infrared thermography is complicated by processes at the surface leading to excess IR radiation. There are at least two possible causes of the excess...

Comparing scrape-off layer and divertor physics in JET pure He and D discharges (2003)

Pitts, R. A., Andrew, P., Andrew, Y., Becoulet, C., Coffey, I., Coster, D., ...

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has...

JET carbon screening experiments using methane gas puffing and its relation to intrinsic carbon impurities (2003)

Strachan, J. D., Fundamenski, W., Charlet, M., Corrigan, G., Erents, K., Gafert, J., ...

JET carbon screening experiments were performed using methane gas injection. L-Mode experiments scanned parameters influencing the JET scrape-off-layer (SOL) and/or intrinsic impurity level. Scaling...

Tomographic reconstruction of 2D line radiation distribution in the JET MkIIGB divertor (2003)

Huber, A., Coad, P., Coster, D., Ingesson, L. C., Itami, K., Jachmich, S., ...

A 2D-tomographic reconstruction of D- and C III-emission distribution in L-mode, density limit discharge has been performed and compared with results from other diagnostics (KL2, KS3). The observed...

Reduction of divertor heat load in JET ELMy H-modes using impurity seeding techniques (2003)

Rapp, J., Monier-Garbet, P., Andrew, P., Dumortier, P., Eich, T., Fundamenski, W., ...

One of the most severe problems for fusion reactors is the power load on the divertor target plates. In order to reduce the power load in the divertor radiation cooling by seeding of impurities is...

L-mode density limits at JET: E ect of septum removal in the Mk-II gas box divertor (2003)

Rapp, J., Fundamenski, W., Gafert, J., Huber, A., Jachmich, S., Matthews, G.F., ...

Retarding field analyser measurements in the JET plasma boundary (2003)

Pitts, R.A., Duran, I., Erents, S.K., Horacek, J., Matthews, G.F.

Divertor detachment during pure helium plasmas in JET (2003)

Wischmeier, M., Coster, D., Bonnin, X., Eich, T., Huber, A., Ingesson, C., ...

A campaign of pure helium discharges in the JET tokamak equipped with the MarkIIGB divertor has been performed. This paper describes some of the experimental observations of divertor detachment...

Density limits in helium plasmas at JET (2003)

Rapp, J., Huber, A., Ingesson, L. C., Jachmich, S., Matthews, G. F., Philipps, V., ...

Recently at JET a pure helium campaign has been performed. The exploration of the density limit in L-mode limiter as well as L-mode and H-mode diverted plasmas was one of the main objectives. In...

Retarding field energy analyzer for the JET plasma boundary (2003)

Pitts, R. A., Chavan, R., Davies, S. J., Erents, S. K., Kaveney, G., Matthews, G. F., ...

Retarding field analyzers (RFAs) are essentially the only practical tool with which to measure the distribution of ion energies in the boundary plasma of magnetic fusion devices. The technique has...

Comparing scrape-off layer and divertor physics in JET pure He and D discharges (2003)

Pitts, R. A., Andrew, P., Andrew, Y., Becoulet, M., Coffey, I., Coster, D., ...

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has...

Overview of JET results (2003)

Pamela, J., Solano, E. R., Adams, J. M., Agarici, G., Agarici, M., Akhter, H., ...

Scientific and technical activities on JET focus on the issues likely to affect the ITER design and operation. Our understanding of the ITER reference mode of operation, the ELMy H-mode, has...

Experimental evidence of fluctuations and flows near marginal stability and dynamical interplay between gradients and transport in the JET plasma boundary region (2003)

Hidalgo, C., Goncalves, B., Pedrosa, M. A., Silva, C., Balbin, R., Hron, M., ...

The structure of the naturally occurring velocity shear layer and the dynamical coupling between gradients and transport have been investigated in the JET plasma boundary region. The velocity shear...

Comparison of carbon and main ion radiation profiles in matched helium and deuterium plasmas in JET (2003)

Fenstermacher, M. E., Lawson, K. D., Porter, G. D., Erents, S. K., Ingesson, C., Matthews, G. F., ...

This paper examines the radiation profiles and corresponding ionization source profiles of carbon and main plasma ions in matched helium and deuterium. L-mode plasmas in JET. The radiation...

A retarding field energy analyser for the JET plasma boundary (2003)

Pitts, R.A., Chavan, R., Erents, S.K., Kaveney, G., Matthews, G.F., Neill, G., ...

Beryllium and carbon films in JET following D-T operation. (2003)

Rubel, M., Coad, J.P., Bekris, N., Erents, S.K., Hole, D., Matthews, G.F., ...

Proc. of the 15th Internat.Conf.on Plasma Surface Interactions in Controlled Fusion Devices (PSI-15), Gifu, J, May 27-31, 2002

Interpretation of recent power width measurements in JET MkIIGB ELMy H-modes (2002)

Fundamenski, W., Sipilä, S., Matthews, G. F., Riccardo, V., Andrew, P., Eich, T., ...

Helium and neon enrichment studies in the JET mark IIAP and mark IIGB divertors (2002)

Groth, M., Andrew, P., Fundamenski, W., Guo, H. Y., Hillis, D. L., Hogan, J. T., ...

Adequate helium enrichment and exhaust have been achieved in reactor relevant ELMy H mode plasmas in JET performed in the Mark II divertor geometry. These quantities, describing the retention of...

ELM moderation with ICRH heating on JET (2002)

Maddison, G. P., Snipes, J. A., Chareau, J. M., Conway, G. D., Hutchinson, I. H., Ingesson, L. C., ...

Progress in internal transport barrier plasmas with lower hybrid current drive and heating in JET (Joint European Torus) (2002)

Mailloux, J., Alper, B., Baranov, Y., Becoulet, A., Cardinali, A., Castaldo, C., ...

In optimized shear plasmas in the Joint European Torus [P. H. Rebut and B. E. Keen, Fusion Technol. 11, 13 (1987)], safety factor (q) profiles with negative magnetic shear are produced by applying...

ELM mitigation by nitrogen seeding in the JET gas box divertor (2002)

Rapp, J., Eich, T., Von Hellermann, M., Herrmann, A., Ingesson, L. C., Jachmich, S., ...

One of the most severe problems for fusion reactors is the power load on the divertor target plates. Technically only power loads of less than 10 MW m(-2) are acceptable. However, strong edge...

ELMs behaviour and edge plasma stability in JET (2002)

Becoulet, M., Parail, V., Huysmans, G., Sharapov, S., Lomas, P. J., Saibene, G., ...

The fine structure of ELMs (2002)

Endler, M., Davies, S., Garcia-Cortes, I., Matthews, G.F., ASDEX Upgrade Team, JET Team

Edge transport analysis of JET H-mode discharges and the possible influence of radial drift velocities (2002)

Kallenbach, A., Andrew, Y., Beurskens, M., Corrigan, G., Eich, T., Erents, K., ...

ELM moderation with ICRF heating on JET (2002)

Maddison, G. P., Snipes, J. A., Chareau, J. M., Conway, G. D., Hutchinson, I. H., Ingesson, L. C., ...

A high-density, ELM-free, 'enhanced Dalpha' (EDA) H-mode has been demonstrated with Ohmic or RF heating on the Alcator C-Mod device. An allied 'low particle confinement' H-regime was also observed...

Turbulent transport studies in JET edge plasmas in X-point configurations (2001)

Garcia-Cortes, I., Loarte, A., Balbin, R., Bleuel, J., Chankin, A., Davies, S. J., ...

Effect of Heat Flux and Density Variation on Electron Temperature Profiles in JET ELMy H-Modes (2001)

Suttrop, W., Budny, R.V., Cordey, J.G., Gowers, C., Mantsinen, M., Matthews, G. F., ...

Novel Method to Study SOL-Response to ELMs by Divertor Target Probes in JET (2001)

Jachmich, S., Laux, M., Becoulet, M., Eich, T., Loarte, A., Matthews, G.F., ...

Particle and Power Fluxes during an ELM Observed by Probes in the Divertors of ASDEX Upgrade and JET (2001)

Laux, M., Jachmich, S., Herrmann, A., Matthews, G.F., Fundamenski, W.

Radiation Distribution and Neutral-Particle Loss in High-Density Plasmas in the JET MKI-IGB Divertor (2001)

Ingesson, C., Fuchs, J.C., Barnsley, R., Coster, D.P., Fundamenski, W., Huber, A., ...

Divertor Energy Distribution in JET H-modes (2001)

Matthews, G.F., Erents, S.K., Ingesson, C., Monk, R.D., Riccardo, V.

Basic Divertor Operation in ITER-FEAT (2001)

Kukushkin, A.S., Janeschitz, G., Loarte, A., Pacher, H.D., Coster, D.P., Matthews, G.F., ...

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., ...

Material transport in the SOL plasma of JET investigated by means of surface analysis on reciprocating probes (2001)

Rubel, M., J.P., Coad, Erents, K., Hole, D., Matthews, G.F., Pitts, R.A.

Erosion/deposition issues at JET. (2001)

Coad, J.P., Bekris, N., Elder, J.D., Erents, S.K., Hole, D.E., Lawson, K.D., ...

Proc.of the 14th Internat.Conf.on Plasma Surface Interactions in Controlled Fusion Devices, Rosenheim, May 22-26, 2000

Results of JET Pellet Fueling Experiments with Outboard and Inboard Launch (2000)

Jones, T.T.C., Baylor, L.R., Challis, C.D., Cox, S.J., Gormezano, C., Gowers, C.W., ...

Turbulent Transport Studies in the JET Edge Plasma in Limitter Configuration (2000)

Garcia-Cortes, I., Balbin, R., Loarte, A., Bleuel, J., Chankin, A., Davies, S. J., ...

Influence of triangularity and gas fuelling on energy losses in ELMs on JET (2000)

Becoulet, M., Zaviego, M., Matthews, G.F., Kallenbach, A., Ongena, J., Sauter, O.

Long-Range Time Correlations in Plasma Edge Turbulence (1998)

Carreras, B. A., Van Milligen, B.Ph., Pedrosa, M.A., Balbín, R., Hidalgo, C., Newman, D.E., ...

Carreras, B.A., Van Milligen, B.Ph., Pedrosa, M.A., Balbín, R., Hidalgo, C., Newman, D.E., ...

Overview of Probe Measurements at JET (1998)

Davies, S.J., Endler, M., Erents, S. K., García-Cortés, I., Guo, H., Hidalgo, C., ...

Highly radiating and detached plasmas on Carbon and Beryllium targets (1995)

Matthews, G.F., Fasoli, A.

Plasma Ion Mass-Spectrometry in the Textor Boundary (1992)

Matthews, G. F., Elder, D., McCracken, G. M., Monk, R. D., Pitts, R. A., Samm, U., ...

In this paper we present the first results obtained with a plasma ion mass spectrometer in the boundary of the TEXTOR tokamak. Measurements were made several days after TEXTOR was boronised....

Edge and divertor physics with reversed toroidal field in JET

Pitts, R. A., Andrew, P., Bonnin, X., Chankin, A. V., Corre, Y., Corrigan, G., ...

Size Scaling of Carbon Screening by a Tokamak Divertor

Strachan, J. D., Corrigan, G., Kallenbach, A., Matthews, G. F., Spence, J., JET EFDA Contributors

Edge localized mode physics and operational aspects in tokamaks

Bécoulet, M., Huysmans, G., Sarazin, Y., Garbet, X., Ghendrih, Ph., Rimini, F., ...

Integrated modelling of material migration and target plate power handling at JET

Coster, D. P., Bonnin, X., Chankin, A., Corrigan, G., Erents, S. K., Fundamenski, W., ...

Edge code simulations of SOL flows in JET

Kirnev, G. S., Corrigan, G., Coster, D., Erents, S. K., Matthews, G. F.

Experimental observations and modelling of carbon transport in the inner divertor of JET and extrapolations to ITER

Kirschner, A., Phillips, V., Coster, D. P., Erents, S. K., Esser, H. G., Federici, G., ...