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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. Overview of high performance H-modes in JET

Author

A. C. C. Sips, A.E. Costley, F. Hurd, G. Saibene, M. Salisbury, M. Brusati, C. Perry, P. J. Harbour, T. Martin, J. P. Poffe, Laurie Porte, H. van der Beken, N. C. Hawkes, J. Wesson, M. Bures, G. Janeschitz, M. Huart, A. Santagiustina, G. Bosia, H. Altmann, J. L. Salanave, A. Dines, N. G. Kidd, F. Junique, E. Righi, P. J. Lomas, P. G. Doyle, J. G. Cordey, G. Magyar, V. V. Parail, K. Thomsen, A. Gondhalekar, M. Irving, C. Gowers, R. Ostrom, C. Woodward, A. Galetsas, A. Loarte, P. Card, P. Trevalion, A. M. Edwards, T. P. Hughes, F. Jensen, M. Newman, C. Caldwell-Nichols, N. Peacock, P. Smeulders, A. Korotkov, A. Colton, P. Chuilon, T. T. C. Jones, F.G. Rimini, T. Winkel, P. Stubberfield, M. A. Pick, J.A. Hoekzema, T. Szabo, J. M. Adams, R. Prentice, Wolfgang Kerner, L. Zannelli, M. Rapisarda, D.F.H. Start, L. G. Eriksson, P. Schild, M. Wykes, D. Wilson, S. J. Davies, A. Sibley, P. Haynes, B. Alper, R. Wolf, T. Elevant, R. T. Ross, J. O'Rourke, E. Thompson, C. J. Hancock, R. Haange, P. E. Stott, A. Tesini, B. Macklin, M. Baronian, W. J. Brewerton, M.F. Stamp, L. P. D. F. Jones, A. C. Maas, B. E. Keen, A. Taroni, H. Morsi, G. Murphy, H. D. Falter, M. Keilhacker, I. D. Young, M. von Hellermann, A. Girard, A. Haigh, M. Cooke, A. Cherubini, Henrik Bindslev, D. Goodall, L. Horton, S. K. Erents, J.A. Dobbing, M. Gadeberg, E. Deksnis, G. Matthews, M. Comiskey, T. Wade, F. Marcus, M. Schmid, P. Burton, M. Garribba, G. Newbert, P. Barabaschi, A. Peacock, V. Marchese, C. Froger, K. D. Lawson, P. Noll, M. Brandon, G. Sadler, P. R. Thomas, C. F. Maggi, W. Bailey, D. Ward, K. Blackler, A. Rolfe, T. J. Wijnands, R. Barnsley, G. Celentano, R. Russ, Annika Ekedahl, G. Vayakis, T. Bonicelli, P. Froissard, C. Walker, J. Jacquinot, J. Plancoulaine, P. Kupschus, N. Dolgetta, Y. Agarici, D. Summers, M. Ottaviani, H. Brelen, S. Ali-Arshad, C. Sborchia, R. Claesen, C. A. Steed, S. F. Mills, A. Gibson, R. Smith, B. Schunke, B.J.D. Tubbing, J. Mart, H. McBryan, L. Svensson, J. J. Davis, S. M. Scott, R. J. M. Pearce, J. P. Coad, F. Soldner, T. Budd, P. Stangeby, E. M. Jones, V.P. Bhatnagar, C. D. Challis, R. Rookes, D. Campling, I. Coffey, W. Zwingmann, A. C. Bell, E. Oord, D. O'Brien, P. Gaze, N. Davies, D. Bond, David Campbell, P. Barker, F. Nave, G. B. Denne-Hinnov, S. Papastergiou, R. Monk, S. L. Dmitrenko, B. Balet, P. Butcher, L. Rossi, K. Borras, O. Da Costa, R. Giannella, P. Massmann, R. D. Gill, R. Sartori, J. Lingertat, S. Weber, R. N. Litunovski, H. Buttgereit, J. Ehrenberg, B. Patel, R. Lasser, N. A. Gottardi, A. Kaye, T. Brown, J. Christiansen, T. Businaro, L. Lauro-Taroni, C. Gormezano, O. N. Jarvis, S. Clement, A. J. Bickley, J. Freiling, D.V. Bartlett, D. Chiron, M. Botman, B. Ingram, C. Terella, C. Lowry, W. Obert, M. Tabellini, S. Corti, S. Cooper, P. Bertoldi, E. Bertolini, H. Summers, P.D. Morgan, P. Crawley, R. Reichle, Francesco Porcelli, G. Sanazzaro, G. Corrigan, T. Raimondi, G. Deschamps, M. J. Watson, M. C. Ramos de Andrade, G. Fishpool, H. Deesch, J. L. Hemmerich, G. Benali, Y. Baranov, H. Jaeckel, S. E. Dorling, G. Radford, S. J. Booth, J. F. Junger, H. Duquenoy, M. Lennholm, L. Galbiati, W. J. Dickson, N. P. Hawkes, R. Simonini, Michael Loughlin, T. Hender, M. Cox, P. Breger, W. Suverkropp, M. Nilsen, M. L. Watkins, S. Puppin, D. Stork, S. Richards, P. Nielsen, P. Boucquey, G.A. Cottrell, A. Tanga, P. J. Howarth, K. Fullard, D. Martin, M. Johnson, J. F. Jaeger, P. Andrew, P. Meriguet, Ralf König, M. O'Mullane, N. Deliyanakis, E. Martin, G. Vlases, and J. How

Subjects
Physics, Nuclear Energy and Engineering, Diamagnetism, Plasma, Atomic physics, Condensed Matter Physics, Phenomenology (particle physics), Scaling, Ion
Abstract

An account is given of the high performance plasmas established by development of the H-mode regime in JET in the experimental campaigns up to 1992. High performance in this case is measured in terms of the confinement enhancement achieved over the L-mode scaling as measured using the plasma diamagnetism. Three JET H-mode regimes have achieved enhancement factors (H G DIA ) over Goldston L-mode scaling of 2.5 < H G DIA < 4.0. These are the Pellet Enhanced Performance (PEP) H-MODE, the high bootstrap fraction (high β POL ) H-mode and the Hot Ion (HI) H-mode. The phenomenology of these three regimes is reviewed and contrasts and common threads are elucidated

Published
1994
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3. Plasma heating in JET

Author

A Ainsworth, H Altmann, R J Anderson, J Arbez, D Bartlett, W Bailey, K Behringer, E Bertolini, P Bertoldi, C H Best, V Bhatnagar, R J Bickerton, G Boissin, T Bonicelli, S Booth, A Boschi, G Bosia, M Botman, H Brelen, H Brinkschulte, M L Browne, M Brusati, T Budd, M Bures, P Butcher, H Buttgereit, D Cacaut, C Caldwell-Nichols, D Campbell, J Carwardine, G Celentano, C D Challis, A Cheetman, J Christiansen, C Christodoulopoulos, P Chuilon, R Claesen, J P Coad, M Cooke, J G Cordey, W Core, S Corti, A E Costley, G Cottrell, J Dean, E Deksnis, G Deschamps, K J Dietz, J Dobbing, S E Dorling, D F Duechs, G Duesing, H Duquenoy, L de Kock, A Edwards, W Engelhardt, F Erhorn, B Eriksson, H Falter, T Hellsten, J L Hemmerich, R Hemsworth, F Hendriks, R F Herzog, L Horton, J How, M Huart, A Hubbard, M Hugon, P Jones, J Kaeline, A Kaellne, A Kaye, B E Keen, M Keilhacker, G Kinahan, A Konstantellos, P Kupschus, P Lallia, J R Last, N Foden, C Froger, K Fullard, A Galetsas, A Gallacher, A Gibson, R D Gill, A Geode, A Gondhalekar, N A Gottardi, C Gowers, R Granetz, B Green, S Gregoli, F S Griph, R Haange, C J Hancock, P Harbour, R F Herog, J Kaellne, L Lauro-Taroni, E Lazzaro, R C Lobel, P Lomas, M Lorenzo-Gottardi, C Lowry, G Magyar, D Maissonneir, M Malacarne, V Marchese, P Massmann, P McMullen, M J Mead, P Meriguet, V Merlo, S Mills, P Millward, A Moissonnier, P L Mondini, P Morgan, G Murphy, M F Nave, L Nickesson, P Nielson, P Noll, S Nowak, W Obert, B Oliver, M Olsson, J O'Rourke, M G Pacco, J Paillere, L Pannacione, S Papastergiou, D Pasini, M Pescatore, J Planncoulaine, J P Poffe, R Prentice, T Raimondi, C Raymond, P H Rebut, J Removille, W Riediker, R Roberts, A Rolfe, R T Ross, G Sadler, J Saffert, N Salmon, A Sand, A Santagiustina, R Saunders, M Schmid, F C Schueller, K Selin, R Shaw, D Sigournay, R Simonini, P Smeulders, L Sonnerup, K Sonnenberg, M Stamp, C A Steed, D Stork, P E Stott, T E Stringer, D Summers, A Tanga, A Taroni, A Terrington, A Tesini, P R Thomas, E Thompson, F Tibone, R Tivery, E Usselmann, H Van der Beken, M Von Hellerman, J E Van Montfoort, T Wade, C Walker, B A Wallander, M Walravens, K Walter, M L Watkins, M Watson, D Webberley, J Wesson, J Wilks, T Winkel, C Woodward, M Wykes, D Young, L Zennelili, J Zwart, B Beaumont, D Gambier, D Moreau, J Ehrenberg, H Jaeckel, S Kissel, U Kuephnapfel, R Mueller, A Staebler, A Weller, J H Hamnen, M Evrared, M Gadeberg, K Thomsen, P Dupperrex, G Tonetti, N Lopez-Cardozo, B Tubbing, J Von Seggern, J Tagle, F Bombarda, G Bracco, R Giannella, R Carolan, M Cox, M Forrest, D Goodall, N Hawkes, P Haynes, J Hugill, K D Lawson, G McCracken, J Partridge, N Peacock, J Snipes, T Todd, H Schamel, H Summers, and S Tsuji

Subjects
Jet (fluid), Settore FIS/03, Materials science, Nuclear Energy and Engineering, Resonance, Electron temperature, Plasma, Sawtooth wave, Electron, Atomic physics, Condensed Matter Physics, Neutral beam injection, Ion
Abstract

Heating the JET plasma well above temperatures reached in the ohmic phase is the aim of the two additional heating systems planned for JET: ion cyclotron resonance heating (ICRF) and neutral beam injection (NBI). Operations with the latter started in February 1986, initially with hydrogen injection, up to a power level of 7 MW. ICRF power has been delivered to the plasma by three antennae and has reached power levels of 6 MW for 2 s. In most experiments, the frequency of the waves is adjusted to position the minority ion resonance layer close to the centre of the discharge, resulting in a centrally peaked power deposition profile. Results have also shown that the increase of the volume averaged electron temperature was much less dependent on the radial position of the ion resonance layer than were the central temperatures of both ions and electrons which can both approach 5 keV. In cases of 'on axis' heating, large increases in the sawtooth activity is observed with sawtooth periods exceeding 0.3 s. Initial results with NBI have shown a decrease of the global energy confinement time with additional power similar to the one observed with ICRF heating.

Published
1986
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13. ICRF studies on JET.

Author

Jacquinot, J., Anderson, R. J., Arbez, J., Bartlett, D., Beaumont, B., Behringer, K., Bertolini, E., Bhatnagar, V. P., Bonicelli, T., Bosia, G. F., Brinkschulte, H. W., Browne, M. L., Brusati, M., Bures, M., Campbell, D., Christiansen, J. P., Christodoulopoulos, C. O. A., Chuilon, P., Claesen, R., and Coad, J. P.

Published
1986
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14. High fusion performance from deuterium-tritium plasmas in JET.

Author

Keilhacker, M., Gibson, A., Gormezano, C., Lomas, P. J., Thomas, P. R., Watkins, M. L., Andrew, P., Balet, B., Borba, D., Challis, C. D., Coffey, I., Cottrell, G. A., Esch, H. P. L. De, Deliyanakis, N., Fasoli, A., Gowers, C. W., Guo, H. Y., Huysmans, G. T. A., Jones, T. T. C., and Kerner, W.

Published
1999
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