First results with the modified JET

Adams, J. M.; Agarici, Y.; Ageladarakis, P.; Alper, B.; Altmann, H.; Andrew, P.; Ali-Arshad, S.; Bailey, W.; Balet, B.; Baranov, Y.; Barker, P. F.; Barnsley, R.; Baronian, M.; Bartlett, D.V.; Bell, A.C.; Benali, G.; Bertolini, E.; Bhatnagar, V.P.; Bickley, A.; Bindslev, H.; Blackler, K.; Bond, D. S.; Bonicelli, T.; Borras, K.; Boucquey, P.; Brandon, M.; Breger, P.; Brelen, H.; Brewerton, W. J.; Brown, T.; Budd, T.; Bureš, Michal; Burton, Peter G.; Businaro, T.; Buttgereit, H.; Caldwell-Nichols, C.; Campbell, David; Campling, D.; Card, P.; Cecil, F.; Celentano, G.; Challis, C.; Chiron, D.; Christiansen, J.; Chuilon, P.; Claesen, R.; Clement, S.; Coad, J. P.; Colombi, S.; Cooke, M.; Cooper, S.; Cordey, J.G.; Cottrell, Geoff; Cox, M.; Crawley, P.; Costa, O. Da; Cusack, R.; D′Antona, G.; Davies, N.; Davies, S.; Davis, J.; Deesch, H.; Deksnis, E.; Deliyanakis, N.; Dines, A.; Dmitrenko, S. L.; Dobbing, John; Dolgetta, N.; Dorling, S.; Doyle, P. G.; Duquenoy, H.; Edwards, A.; Ehrenberg, J.; Ekedahl, A.; Elevant, T.; Erents, S.K.; Eriksson, L.‐G.; Falter, H.; Fasoli, A.; Fechner, B.; Fischer, Baruch; Fishpool, G.; Freiling, J.; Froger, C.; Froissard, P.; Fullard, K.; Gadeberg, M.; Galbiati, L.; Garribba, M.; Gerstel, U.; Giannella, R.; Gibson, A.; Gill, R.D.; Goulding, R. H.; Gondhalekar, A.; Goodall, Dominic; Gormezano, C.; Gottardi, N.A.C.; Gowers, C.; Grisolia, C.; Guo, H. Y.; Haigh, A.; Hancock, C. J.; Harbour, P.J.; Hawkes, N. C.; Hawkes, N. P.; Hemmerich, J.L.; Hender, T. C.; Hoekzema, J.A.; Horton, L. D.; How, J.; Howarth, Philip J.; Howman, A.; Huart, M.; Hutchinson, I. H.; Hughes, T.P.; Hurd, F.; Ingram, B.; Irving, M.; Ishida, S.; Jacquinot, J.; Jaeckl, H.; Jaeger, J. F.; Jarvis, O.N.; Jensen, F.; Johnson, M.F.; Jones, E. M.; Jones, L.; Jones, T. T. C.; Junger, J. F.; Junique, F.; Kaye, A.; Keen, B.E.; Keilhacker, M.; Kerner, W.; Kidd, N. G.; König, R.; Kupschus, P.; Lamalle, P.; Lässer, R.; Lauro-Taroni, L.; Laviron, C.; Lawson, K.; Lazzaro, E.; Lennholm, M.; Lingertat, J.; Lomas, P.; Loughlin, M.; Lowry, C.; Lyadina, E.S.; Maas, A.; Macklin, B.; Maggi, C. F.; Marchese, Valentina; Marcus, F.B.; Mart, J.; Martin, David L.; Martin, T. J.; Matthews, G. F.; McBryan, H.; McCormick, G. K.; Meigs, A.; Milani, S.; Monk, R.D.; Morgan, P. D.; Murphy, Gareth; Nave, F.; Newbert, G.; Nguyen, Frédéric; Nielsen, P.; Noll, P.; Obert, W.; O’Brien, Dennis P.; Oord, E.; Ostrom, R.; Ottaviani, M.; Papastergiou, S.; Parail, V.; Patel, B.; Peacock, Alan T.; Peacock, N. J.; Pearce, R.; Perry, C. H.; Pick, M.; Plancoulaine, J.; Pogutse, O. P.; Poffe, J.P.; Porcelli, Francesco; Porte, L.; Prentice, R.; Puppin, S.; Radford, Gail; Raimondi, T.; Reichle, R.; Richards, S.; Righi, E.; Rimini, F.; Rolfe, A.C.; Rookes, A.; Ross, R. T.; Rossi, A.; Rossi, L.; Russ, R.M.; Sadler, G.; Saibene, G.; Salisbury, M.; Sanazzaro, G.; Santagiustina, A.; Sartori, F.; Sartori, R.; Savrukhin, Peter; Schaffer, M. J.; Schild, P.; Schmid, Martin; Schunke, B.; Scott, S.; Sharapov, S. E.; Shaw, R.; Sibley, A.; Simonini, R.; Sips, A. C. C.; Smeulders, P.; Smith, Roger; Söldner, F. X.; Stamp, M.; Stangeby, P.C.; Start, D.F.H.; Steed, Chad A.; Stork, D.; Stott, P.E.; Stubberfield, P.M.; Summers, Danny; Summers, H. P.; Suverkropp, W.; Svensson, Lennart; Szabo, T.; Tabellini, M.; Tanga, A.; Taroni, A.; Terella, C.; Tesini, A.; Thomas, P. R.; Thompson, E.; Thomsen, K.; Tubbing, B.J.D.; Beken, H. van der; Goot, Els van der; Vayakis, G.; Vlases, G.; Hellermann, M. von; Wade, T.; Walker, C.; Ward, D.J.; Watkins, M.L.; Watkins, N. W.; Watson, M.; Weber, S. V.; Wesson, J.A.; Wilson, David J.; Winkel, T.; Wolf, R J; Woodward, C. E.; Young, I.; Zannelli, L.; Zornig, N.; Zwingmann, W.

doi:10.1088/0741-3335/36/12b/003

Cited by 10 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A natural solution would be to puff some deuterium gas into the SOL well upstream of the target, and to increase the pumping in the divertor region in order to achieve an externally controlled impurity flushing action, while not overly disturbing the density control of the main plasma. Such arrangements have become possible with the addition of strong divertor pumps on DIII-D (Mahdavi et al 1995), JET (Tanga 1994), ASDEX-U (Köppendörfer et al 1982(Köppendörfer et al , 1992 and other tokamaks.…”

Section: 'Puff and Pump' Experimentsmentioning

confidence: 99%

Experimental divertor physics

Pitcher

Stangeby

1997

Plasma Phys. Control. Fusion

368

394

View full text Add to dashboard Cite

The physics of divertors in tokamaks is reviewed, primarily from an experimental point of view, although where possible simple analytic modelling is included. The paper covers the four main subject areas at issue in divertor research: (1) the wide dispersal of plasma power exhausted from the main plasma, (2) the production of sufficiently high gas pressures in the vicinity of pump ducts to enable the removal of fuel and helium ('ash') gas from the system, (3) the elimination or reduction of impurity production and (4) the screening of impurities produced, or intentionally added, at the plasma boundary from the plasma core. A simple analytic model, the 'two-point' model, is introduced early in the paper and provides a framework for comparison of the experimental results, drawn from many machines, with simply derived expectations. Conclusions regarding the direction of future research priorities are made.

show abstract

Section: 'Puff and Pump' Experimentsmentioning

confidence: 99%

Experimental divertor physics

Pitcher

Stangeby

1997

Plasma Phys. Control. Fusion

368

394

View full text Add to dashboard Cite

show abstract

“…In the present paper, we report highly resolved current spatial profiles from an array of fixed Langmuir probes [13] in the 1994 Mark 1 divertor target [14] of the JET tokamak operating with a single-null divertor in the bottom of the machine, as illustrated in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Pfirsch-Schluter currents in the JET divertor

et al. 1997

View full text Add to dashboard Cite

show abstract

“…The so-called H-mode or 'high' confinement mode, as opposed to the 'normal' L-mode or low confinement mode, was discovered in 1982 in ASDEX [1]. Since then, this mode, characterized by an edge transport barrier, has been regularly obtained in most tokamaks [2][3][4][5][6][7][8][9][10][11][12] as well as in other magnetic confinement devices [13][14][15][16][17]. Internal transport barriers (ITBs) characterize the second major class of improved confinement modes [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Accessibility and properties of ELMy H-mode and ITB plasmas in TCV

Martin

Henderson

Alberti

et al. 2003

Plasma Phys. Control. Fusion

View full text Add to dashboard Cite

This paper presents experimental results on the accessibility and the properties of plasmas with improved confinement in TCV. First, the H-mode threshold power is measured in Ohmic plasmas. Above an Ohmic threshold density, the threshold power increases with the density. A lower threshold density is found when additional electron cyclotron heating (ECH) is applied. At these low densities, the threshold power increases dramatically with decreasing density. Only a small fraction of the wide operational domain leading to the Ohmic H-mode is found to lead to a stationary regime with edge localized modes (ELMs). The ELMs have an irregular frequency, but in TCV they can be triggered by an external magnetic perturbation that induces a rapid vertical movement of the plasma. With this perturbation, the ELM frequency can be increased. The ELM triggering mechanism is provided by the vertical movement of the plasma away from the X-point of a single null configuration. This movement induces a positive current at the plasma edge, and we deduce that the ELMs are being controlled by this modification of the plasma edge current.Electron internal transport barriers (eITBs) are produced deep in the plasma during the stationary phase of TCV discharges. Different scenarios of ECH or

show abstract

First results with the modified JET

Cited by 10 publications

References 3 publications

Experimental divertor physics

Experimental divertor physics

Pfirsch-Schluter currents in the JET divertor

Accessibility and properties of ELMy H-mode and ITB plasmas in TCV

Contact Info

Product

Resources

About