Overview of progress in European medium sized tokamaks towards an integrated plasma-edge/wall solution

H. Meyer, T. Eich, M. Beurskens, S. Coda, A.H. Hakola, P. Martin, J. Adamek, M. Agostini, D. Aguiam, J. Ahn, L. Aho-Mantila, R. Akers, R. Albanese, R. Aledda, E. Alessi, Jonathan S. Allan, Simone da Costa Alves Machado, R. Ambrosino, L. Amicucci, H. AnandG. Anastassiou, Y. Andrèbe, C. Angioni, G. Apruzzese, M. Ariola, H. Arnichand, W. Arter, A. Baciero, M. Barnes, L. Barrera Orte, R. Behn, A. Bencze, J. Bernardo, M. Bernert, P. Bettini, P. Bílková, Waqas Bin Najib, G. Birkenmeier, J P S Bizarro, P. Blanchard, T. Blanken, M. Bluteau, V. Bobkov, O. Bogar, P. Böhm, T. Bolzonella, L. Boncagni, A. Botrugno, C. Bottereau, F. Bouquey, C. Bourdelle, S. Bremond, S. Brezinsek, D. Brida, F. Brochard, F.J. Buchanan, H. Bufferand, P Buratti, P. Cahyna, G. Calabro, Y. Camenen, R. Caniello, B. Cannas, A. Canton, A. Cardinali, D. Carnevale, Meghan Carr, D. Carralero, P. Carvalho, L. Casali, C. Castaldo, F. Castejón, R. Castro, F. Causa, R. Cavazzana, M. Cavedon, M. Cecconello, S. Ceccuzzi, R. Cesario, C.D. Challis, I.T. Chapman, S.C. Chapman, M. Chernyshova, D-Y. Choi, C. Cianfarani, G. Ciraolo, J Citrin, F. Clairet, I. Classen, R. Coelho, J.W. Coenen, L. Colas, G. Conway, Y. Corre, S. Costea, F Crisanti, N. Cruz, G. Cseh, A. Czarnecka, O. D’Arcangelo, M. De Angeli, G. De Masi, G. De Temmerman, G. De Tommasi, J. Decker, R.S. Delogu, R.O. Dendy, P. Denner, C. Di Troia, M. Dimitrova, R. D’Inca, V. Dorić, D. Douai, A. Drenik, B. Dudson, D. Dunai, M. Dunne, B. P. Duval, L. Easy, S. Elmore, B. Erdös, B. Esposito, E. Fable, M. Faitsch, A. Fanni, N. Fedorczak, F. Felici, J. Ferreira, O. Février, O. Ficker, S. Fietz, L. Figini, A. Figueiredo, A. Fil, G. Fishpool, Michael FitzGerald, M. Fontana, O. Ford, L Frassinetti, R. Fridström, D. Frigione, G. Fuchert, C. Fuchs, M. Furno Palumbo, S. Futatani, L. Gabellieri, K. Gałązka, J. Galdon-Quiroga, S. Galeani, D. Gallart, Antonio Gallo, C. Galperti, Y. Gao, S. Garavaglia, J. Garcia, A. Garcia-Carrasco, J. Garcia Lopez, M. García-Muñoz, J.-L. Gardarein, L. Garzotti, J. Gaspar, E. Gauthier, P. Geelen, B. Geiger, P. Ghendrih, F. Ghezzi, L. Giacomelli, L. Giannone, E. Giovannozzi, C. Giroud, C. Gleason González, M. Gobbin, T.P. Goodman, G. Gorini, M. Gospodarczyk, G. Granucci, M. Gruber, A. Gude, L. Guimarais, R. Guirlet, George J. Gunn, P. Hacek, S. Hacquin, S. Hall, C. Ham, T. Happel, J. Harrison, D. Harting, V. Hauer, E. Havlícková, T. Hellsten, W. Helou, S.S. Henderson, P. Hennequin, M. Heyn, B. Hnat, M. Hölzl, G.M.D. Hogeweij, Connie Honoré, C. Hopf, J. Horáček, G. Hornung, L. Horvath, Zhiwei Huang, Andreas Huber, J. Igitkhanov, V. Igochine, M. Imrisek, P. Innocente, C. Ionita-Schrittwieser, H. Isliker, I. Ivanova-Stanik, Asger Schou Jacobsen, P. Jacquet, M. Jakubowski, A. Jardin, F. Jaulmes, F. Jenko, Thomas Jensen, Jeppe Miki Busk Olsen, Martin Jessen, E. Joffrin, O. Jones, T. Jónsson, A. Kallenbach, N. Kallinikos, S. Kalvin, A. Kappatou, J. Karhunen, A. Karpushov, S. Kasilov, G. Kasprowicz, A. Kendl, W. Kernbichler, D. Kim, A. Kirk, S. Kjer, I. Klimek, G. Kocsis, D. Kogut, M. Komm, Søren Bang Korsholm, H R Koslowski, M. Koubiti, J. Kovacic, K. Kovarik, N. Krawczyk, J. Krbec, K. Krieger, A. Krivska, R. Kube, O. Kudlacek, T. Kurki-Suonio, B. Labit, F.M. Laggner, L. Laguardia, Annukka M Lahtinen, P. Lalousis, P.T. Lang, P. Lauber, N. Lazanyi, A. Lazaros, H.B. Le, A. Lebschy, J. Leddy, Laure Lefèvre, M. Lehnen, Frank Leipold, A. Lessig, M. Leyland, L. Li, Y. Liang, B. Lipschultz, Y.Q. Liu, T. Loarer, A. Loarte, T. Loewenhoff, B. Lomanowski, V.P. Loschiavo, T. Lunt, I. Lupelli, H. Lux, A. Lyssoivan, Jens Madsen, P. Maget, C. Maggi, R. Maggiora, Michael Løiten Magnussen, J. Mailloux, B. Maljaars, S.A. Malygin, P. Mantica, M. Mantsinen, M. Maraschek, B. Marchand, N. Marconato, C. Marini, M. Marinucci, T. Markovic, D. Marocco, L. Marrelli, Y. Martin, J. R. Martín-Solís, A. Martitsch, S. Mastrostefano, M. Mattei, G.F. Matthews, M. Mavridis, M.-L. Mayoral, D. Mazon, P. McCarthy, R. McAdams, G.J. McArdle, K.G. McClements, R. McDermott, B. McMillan, G. Meisl, A. Merle, O. Meyer, D. Milanesio, F. Militello, I.G. Miron, K. Mitosinkova, J. Mlynar, A. Mlynek, Daniel R. Molina, Pablo Molina, I. Monakhov, J.M. Morales, Debra L. Moreau, P. Morel, J.-M. Moret, A. Del Moro, D. Moulton, H.W. Müller, F. Nabais, E. Nardon, Volker Naulin, A. Nemes-Czopf, F. Nespoli, R. Neu, Anders Henry Nielsen, Stefan Kragh Nielsen, V. Nikolaeva, Søren Robert Nimb, M. Nocente, R. Nouailletas, S. Nowak, M. Oberkofler, M. Oberparleiter, R. Ochoukov, T. Odstrčil, J. Olsen, J. Omotani, M.G. O’Mullane, F. Orain, N. Osterman, R. Paccagnella, S. Pamela, L. Pangione, M. Panjan, G. Papp, R. Papřok, V. Parail, F.I. Parra, A. Pau, G. Pautasso, S.-P. Pehkonen, A. Pereira, Enrico Perelli Cippo, V. Pericoli Ridolfini, M. Peterka, P. Petersson, V. Petrzilka, P. Piovesan, C. Piron, A. Pironti, F. Pisano, T. Pisokas, R. Pitts, I. Ploumistakis, V. Plyusnin, G. Pokol, D. Poljak, P. Pölöskei, Z. Popovic, G. Pór, L. Porte, S. Potzel, I. Predebon, M. Preynas, G. Primc, Gianluca Pucella, M.E. Puiatti, T. Pütterich, M. Rack, G. Ramogida, C. Rapson, Jens Juul Rasmussen, Jesper Rasmussen, G.A. Rattá, S. Ratynskaia, G. Ravera, D. Réfy, M. Reich, H. Reimerdes, F. Reimold, M. Reinke, D. Reiser, M. Resnik, C. Reux, D. Ripamonti, D. Rittich, G. Riva, M. Rodriguez-Ramos, V. Rohde, J. Rosato, F. Ryter, S. Saarelma, R. Sabot, F. Saint-Laurent, Mirko Salewski, A. Salmi, D. Samaddar, L. Sanchis-Sanchez, J. Santos, O. Sauter, R. Scannell, M. Scheffer, M. Schneider, B. Schneider, P. Schneider, M. Schneller, R. Schrittwieser, M. Schubert, J. Schweinzer, J. Seidl, M. Sertoli, S. Šesnić, A. Shabbir, A. Shalpegin, B. Shanahan, S. Sharapov, U. Sheikh, G. Sias, B. Sieglin, C. Silva, A. Silva, M. Silva Fuglister, James J. Simpson, A. Snicker, C. Sommariva, C Sozzi, S. Spagnolo, G. Spizzo, M. Spolaore, T. Stange, Morten Stejner Pedersen, I. Stepanov, J. Stober, P. Strand, A. Šušnjara, W. Suttrop, T. Szepesi, B. Tál, T. Tala, P. Tamain, G. Tardini, M. Tardocchi, A. Teplukhina, D. Terranova, D. Testa, C. Theiler, A. Thornton, P. Tolias, Laust Emil Hjerrild Tophøj, W. Treutterer, G.L. Trevisan, M. Tripsky, C. Tsironis, C. Tsui, O. Tudisco, A. Uccello, Jesper Urban, M. Valisa, Paul Vallejos, M. Valovic, H. van den Brand, B. Vanovac, S. Varoutis, S. Vartanian, Jesús Vega-Castillo, G. Verdoolaege, K. Verhaegh, L. Vermare, N. Vianello, J. Vicente, E. Viezzer, L. Vignitchouk, W.A.J. Vijvers, F. Villone, B. Viola, L. Vlahos, I. Voitsekhovitch, P. Vondráček, N.M.T. Vu, D. Wágner, N. R. Walkden, N. Wang, T. Wauters, M. Weiland, V. Weinzettl, E. Westerhof, M. Wiesenberger, M. Willensdorfer, M. Wischmeier, I. Wodniak, E. Wolfrum, D. Yadykin, R. Zagorski, I. Zammuto, P. Zanca, R. Zaplotnik, P. Zestanakis, W. Zhang, S. Zoletnik, Matteo Zuin

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Abstract

Integrating the plasma core performance with an edge and scrape-off layer (SOL) that leads to tolerable heat and particle loads on the wall is a major challenge. The new European medium size tokamak task force (EU-MST) coordinates research on ASDEX Upgrade (AUG), MAST and TCV. This multi-machine approach within EU-MST, covering a wide parameter range, is instrumental to progress in the field, as ITER and DEMO core/pedestal and SOL parameters are not achievable simultaneously in present day devices. A two prong approach is adopted. On the one hand, scenarios with tolerable transient heat and particle loads, including active edge localised mode (ELM) control are developed. On the other hand, divertor solutions including advanced magnetic configurations are studied. Considerable progress has been made on both approaches, in particular in the fields of: ELM control with resonant magnetic perturbations (RMP), small ELM regimes, detachment onset and control, as well as filamentary scrape-off-layer transport. For example full ELM suppression has now been achieved on AUG at low collisionality with n  =  2 RMP maintaining good confinement HH(98,y2)≈0.95 Advances have been made with respect to detachment onset and control. Studies in advanced divertor configurations (Snowflake, Super-X and X-point target divertor) shed new light on SOL physics. Cross field filamentary transport has been characterised in a wide parameter regime on AUG, MAST and TCV progressing the theoretical and experimental understanding crucial for predicting first wall loads in ITER and DEMO. Conditions in the SOL also play a crucial role for ELM stability and access to small ELM regimes.
Original languageEnglish
Article number102014
JournalNuclear Fusion
Volume57
Issue number10
Number of pages15
ISSN0029-5515
DOIs
Publication statusPublished - 2017

Keywords

  • Edge localised modes
  • Divertor
  • Heat loads
  • ASDEX upgrade
  • MAST
  • TCV
  • Alternative divertor concepts

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