Now showing items 1-20 of 21

    • Advances in the physics studies for the JT-60SA tokamak exploitation and research plan 

      Giruzzi, Gerardo; Yoshida, Maiko; Aiba, Nobuyuki; Futatani, Shimpei (2020-01-01)
      Article
      Open Access
      JT-60SA, the largest tokamak that will operate before ITER, has been designed and built jointly by Japan and Europe, and is due to start operation in 2020. Its main missions are to support ITER exploitation and to contribute ...
    • Application of the edge-based finite element method for fusion plasma simulations 

      Fuster, Marc; Castillo, Octavio; Futatani, Shimpei (Barcelona Supercomputing Center, 2018-04-24)
      Conference report
      Open Access
    • Coherent vorticity extraction in resistive drift-wave turbulence: Comparison of orthogonal wavelets versus proper orthogonal decomposition 

      Futatani, Shimpei; Farge, Marie; Bos, Wouter J.T.; del Castillo Negrete, Diego; Schneider, Kai; Benkadda, Sadedruddin (2011-03)
      Article
      Open Access
      We assess two techniques for extracting coherent vortices out of turbulent flows: the wavelet based Coherent Vorticity Extraction (CVE) and the Proper Orthogonal Decomposition (POD). The former decomposes the flow field ...
    • Comparing spontaneous and pellet-triggered ELMs via non-linear extended MHD simulations 

      Cathey, Andrés; Hoelzl, Matthias; Futatani, Shimpei; Huijsmans, Guido T.A.; Pamela, Stanislas (2021-07-01)
      Article
      Open Access
      Injecting frozen deuterium pellets into an ELMy H-mode plasma is a well established scheme for triggering edge localized modes (ELMs) before they naturally occur. This paper presents non-linear simulations of spontaneous ...
    • Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade 

      Labit, Benoît; Eich, Thomas Hubert; Harrer, Georg Friedrich; Futatani, Shimpei; Meyer, Han; Decker, Joan (2019-08-01)
      Article
      Restricted access - publisher's policy
      Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, ...
    • Non-linear magnetohydrodynamic simulations of pellet triggered edge-localized modes in JET 

      Futatani, Shimpei; Pamela, Stanislas; Garzotti, Luca; Huijsmans, Guido T.A.; Hoelzl, Matthias; Frigione, Domenico; Lennholm, Morten (2020-02-01)
      Article
      Open Access
      Non-linear magnetohydrodynamic simulations of pellet-triggered edge-localized modes (ELMs) in JET plasma have been carried out with the JOREK code. The pellet particle fuelling efficiency and the power flux at the divertor ...
    • Non-linear magnetohydrodynamic simulations of plasma instabilities from pellet injection in Large Helical Device plasma 

      Futatani, Shimpei; Suzuki, Yasuhiro (2019-08-13)
      Article
      Open Access
      The effect of pellets on the global magnetohydrodynamic (MHD) dynamics of the Large Helical Device (LHD), which is a large superconducting heliotron in Japan, has been analyzed with the MIPS code. A pellet ablation model ...
    • Non-linear MHD Simulation s of Pellet Triggered ELMs in JET and ASDEX Upgrade tokamaks 

      Futatani, Shimpei; Pamela, S.; Huijsmans, G.T.A.; Garzotti, L.; Frigione, D.; Loarte, D.; Hoelzl, M.; Lang, P.T.; Kocsis, G.; Orain, F.; Dunne, M.; Lessig, A.; Mantsinen, Mervi; EUROfusion MST1 Team; ASDEX Upgrade Team; JET Contributors (2016-07-08)
      Open Access
      ITER operation in its high fusion performance DT scenarios relies on the achievement of the H-mode confinement regime, which is expected to lead to the quasi-periodic triggering of ELMs (Edge Localized Modes). ...
    • Non-linear MHD simulations of magnetically confined plasma using OpenFOAM 

      Garrido González, David; Suárez Cambra, Daniel; Futatani, Shimpei (Barcelona Supercomputing Center, 2020-05)
      Conference report
      Open Access
      Investigation of alternative energy resources for future is utmost important topic. One of the possibilities is nuclear fusion which powers the sun, being this very attractive since it is clean, safe and virtually ...
    • Nonlinear MHD simulation of core plasma collapse events in Wendelstein 7-X 

      Suzuki, Yasuhiro; Futatani, Shimpei; Geiger, Joachim (2021-10-29)
      Article
      Open Access
      Three-dimensional nonlinear MHD simulations study the core collapse events observed in a stellarator experiment, Wendelstein 7-X. In the low magnetic shear configuration like the Wendelstein 7-X, the rotational transform ...
    • Overview of progress in European medium sized tokamaks towards an integrated plasma-edge/wall solution a 

      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; 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 (2017-10-01)
      Article
      Open Access
      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) ...
    • Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall 

      Joffrin, Emmanuel; Abduallev, Sadrilla; Abhangi, Mitul; Futatani, Shimpei; Gallart, Daniel; Gutiérrez, Albert; Mantsinen, Mervi Johanna; Saez Pous, Xavier; Rakha, Allah (2019-11-01)
      Article
      Open Access
      For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des.82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments ...
    • Overview of the JET results in support to ITER 

      Litaudon, Xavier; Abduallev, Sadrilla; Abhangi, Mitul; Abreu, Paulo; Afza, M.; Aggarwa, K. M.; Ahlgren, Tommy; Ahn, Jae Heon; Aho-Mantila, Leena; Aiba, Nobuyuki; Futatani, Shimpei; Gallart Escolà, Daniel; Mantsinen, Mervi Johanna; Rakha, Allah (Institute of Physics (IOP), 2017-06-15)
      Article
      Open Access
      The 2014–2016 JET results are reviewed in the light of their significance for optimising the ITER research plan for the active and non-active operation. More than 60 h of plasma operation with ITER first wall materials ...
    • Plasma physics and control studies planned in JT-60SA for ITER and DEMO operations and risk mitigation 

      Yoshida, Maiko; Giruzzi, Gerardo; Aiba, Nobuyuki; Belonohy, Eva; De Tommasi, Giambattista; Futatani, Shimpei; Garzotti, Luca (2022-05-01)
      Article
      Open Access
      Alarge superconducting machine, JT-60SA has been constructed to provide major contributions to the ITER program and DEMO design. For the success of the ITER project and fusion reactor, understanding and development of ...
    • Progress from ASDEX Upgrade experiments in preparing the physics basis of ITER operation and DEMO scenario development 

      Stroth, Ulrich; Aguiam, Diogo; Alessi, Edoardo; Angioni, Clemente; Arden, Nils; Futatani, Shimpei; Gallart Escolà, Daniel; Mantsinen, Mervi (IOP Publishing, 2022-03)
      Article
      Open Access
      An overview of recent results obtained at the tokamak ASDEX Upgrade (AUG) is given. A work flow for predictive profile modelling of AUG discharges was established which is able to reproduce experimental H-mode plasma ...
    • Recent progress in the quantitative validation of JOREK simulations of ELMs in JET 

      Pamela, Stanislas; Huijsmans, Guido T.A.; Eich, Thomas Hubert; Saarelma, Samuli; Giroud, Carine; Hoelzl, Matthias; Orain, François; Futatani, Shimpei (2017-07-01)
      Article
      Restricted access - publisher's policy
      Future devices like JT-60SA, ITER and DEMO require quantitative predictions of pedestal density and temperature levels, as well as inter-ELM and ELM divertor heat fluxes, in order to improve global confinement capabilities ...
    • Research in plasma physics and fusion nuclear technology in the Department of Physics of UPC 

      Futatani, Shimpei; Mas de les Valls Ortiz, Elisabet; Suárez Cambra, Daniel; Batet Miracle, Lluís (2019-05)
      Article
      Restricted access - publisher's policy
      Advanced Nuclear Technologies (ANT) Research Group of Universitat Politècnica de Catalunya (UPC) has diverse fields of activity; research lines in the field of Nuclear Fusion are summarized in this article. Activities of ...
    • Self-consistent dynamics of impurities in magnetically confined plasmas: turbulence intermittency and nondiffusive transport 

      Futatani, Shimpei; del Castillo Negrete, Diego; Garbet, Xavier; Benkadda, Sadedruddin; Dubuit, N. (American Institute of Physics (AIP), 2012-11-02)
      Article
      Open Access
      Self-consistent turbulent transport of high-concentration impurities in magnetically confined fusion plasmas is studied using a three-dimensional nonlinear fluid global turbulence model which includes ion-temperature ...
    • The JOREK non-linear extended MHD code and applications to large-scale instabilities and their control in magnetically confined fusion plasmas 

      Bandaru, Vinodh; Huijsmans, Guido T.A.; Futatani, Shimpei; Becoulet, Marina; Artola, F.J. (2021-06-01)
      Article
      Open Access
      JOREK is a massively parallel fully implicit non-linear extended magneto-hydrodynamic (MHD) code for realistic tokamak X-point plasmas. It has become a widely used versatile simulation code for studying large-scale plasma ...
    • Transition from no-ELM response to pellet ELM triggering during pedestal build-up - insights from extended MHD simulations 

      Futatani, Shimpei; Hoelzl, Matthias; Huijsmans, Guido T.A.; ASDEX Upgrade Team, ASDEX Upgrade Team; EUROfusion MST1 team, EUROfusion MST1 team (2021-04-01)
      Article
      Restricted access - publisher's policy
      Pellet edge localized mode (ELM) triggering is a well-established scheme for decreasing the time between two successive ELM crashes below its natural value. Reliable ELM pacing has been demonstrated experimentally in several ...