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

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 app...

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Autores: Eich, Thomas Hubert, Angioni, Clemente, Barnes, Mike, Bobkov, Volodymyr, Cannas, Barbara, Castejón Magaña, Francisco, Castro Fouz, R., Causa, F, Challis, Clive, Chapman, S. Jon, Citrin, Jonathan, Coelho Pessoa, Rubem Manoel, Cseh, Gabor, Czarnecka, Agata, De Tommasi, Giambattista, Decker, Joan, Drenik, Aleksander, Erdos, Boglárka, Domingues de Figueiredo, Antonio, Fontana, Maria Pia, Frigione, Domenico, Futatani, Shimpei|||0000-0001-5742-5454, Garzotti, Luca, Geiger, Benjamin, Giroud, Carine, Hacek, Pavel, Hauer, Volker, Huang, Zhen, Schoerghuber, Alexander, Ivanova-Stanik, Irena, Jacquet, Philippe, Jakubowski, Marcin, Joffrin, Emmanuel, Jonsson, Thomas, Kasilov, Sergei V., Kernbichler, Winfried, Kocsis, Gabor, Krawczyk, Natalia, Labit, Benoît, Lauber, Philipp, Mailloux, Joelle, Mantica, Paola, Marchand, Benoit, Moret, Janice, Bohn-Nielsen, A, Nocente, Massimo, Olsen, Jorn H., Orain, François, Pamela, Stanislas, Papp, Gergely, Gómez-Pau, Álvaro, Pautasso, Gabriella, Pisano, Fabio, Pokol, Gergo, Popoviç, Zoya, Pütterich, Thomas, Treich Ulldemolins, Montse, Saarelma, Samuli, Salmi, Alessandro, Sauter, Olivier, Sharapov, Sergei, Szepesi, Tamás, Viitala, T., Voitsekhovitch, Irina, Wang, Ningbo, Weinzettl, Vladimir
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/357794
Acceso en línea:https://hdl.handle.net/2117/357794
https://dx.doi.org/10.1088/1741-4326/aa6084
Access Level:acceso abierto
Palabra clave:Nuclear energy
Plasma (Ionized gases)
Nuclear fusion
Edge localised modes
Divertor
Heat loads
ASDEX upgrade
MAST
TCV
Alternative divertor concepts
Energia nuclear
Plasma (Gasos ionitzats)
Fusió nuclear
Àrees temàtiques de la UPC::Física
Descripción
Sumario: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 ${{H}_{\text{H}\left(98,\text{y}2\right)}}\approx 0.95$ . 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.

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