| 1. |
- Bécoulet, A., et al.
(författare)
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Science and technology research and development in support to ITER and the Broader Approach at CEA
- 2013
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 53:10
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Tidskriftsartikel (refereegranskat)abstract
- In parallel to the direct contribution to the procurement phase of ITER and Broader Approach, CEA has initiated research & development programmes, accompanied by experiments together with a significant modelling effort, aimed at ensuring robust operation, plasma performance, as well as mitigating the risks of the procurement phase. This overview reports the latest progress in both fusion science and technology including many areas, namely the mitigation of superconducting magnet quenches, disruption-generated runaway electrons, edge-localized modes (ELMs), the development of imaging surveillance, and heating and current drive systems for steady-state operation. The WEST (W Environment for Steady-state Tokamaks) project, turning Tore Supra into an actively cooled W-divertor platform open to the ITER partners and industries, is presented.
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| 2. |
- Imbeaux, F., et al.
(författare)
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Design and first applications of the ITER integrated modelling & analysis suite
- 2015
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 55:12
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Tidskriftsartikel (refereegranskat)abstract
- The ITER Integrated Modelling & Analysis Suite (IMAS) will support both plasma operation and research activities on the ITER tokamak experiment. The IMAS will be accessible to all ITER members as a key tool for the scientific exploitation of ITER. The backbone of the IMAS infrastructure is a standardized, machine-generic data model that represents simulated and experimental data with identical structures. The other outcomes of the IMAS design and prototyping phase are a set of tools to access data and design integrated modelling workflows, as well as first plasma simulators workflows and components implemented with various degrees of modularity.
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| 3. |
- Frauel, Y., et al.
(författare)
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Easy use of high performance computers for fusion simulations
- 2012
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Ingår i: Fusion Engineering and Design. - : Elsevier BV. - 0920-3796. ; 87:12, s. 2057-2062
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Tidskriftsartikel (refereegranskat)abstract
- Fusion Modelling and Simulation are very challenging and the high performance computing issues are addressed here. Based on the framework developed by the European Integrated Tokamak Modelling project and on the EUFORIA infrastructure, a tool solving nicely these difficulties has been developed for the end users and applied to several fusion simulation cases. The first part recalls the issues with GRID and high performance computing, while the second part presents the solutions and the tool for developing easily a GRID/HPC actor. The last part reports the use of this tool in MHD equilibrium and plasma edge simulations.
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| 4. |
- Guillerminet, B., et al.
(författare)
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Integrated tokamak modelling: Infrastructure and Software Integration Project
- 2008
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Ingår i: Fusion Engineering and Design. - : Elsevier BV. - 0920-3796. ; 83:2-3, s. 442 - 447
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Tidskriftsartikel (refereegranskat)abstract
- The Infrastructure and Software Integration Project must provide the hardware and software environment for the European integrated tokamak modelling taskforce to build and simulate a comprehensive fusion device. Several frameworks have been evaluated in 2006 and this paper reports on the current status of the gateway, the data communication system, the Web portal and the various ITM applications. The first version will be delivered in 2007, prefiguring the next decades' tools.
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| 5. |
- Imbeaux, F., et al.
(författare)
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A generic data structure for integrated modelling of tokamak physics and subsystems
- 2010
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Ingår i: Computer Physics Communications. - : Elsevier BV. - 0010-4655. ; 181:6, s. 987-998
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Tidskriftsartikel (refereegranskat)abstract
- The European Integrated Tokamak Modelling Task Force (ITM-TF) is developing a new type of fully modular and flexible integrated tokamak simulator, which will allow a large variety of simulation types This ambitious goal requires new concepts of data structure and workflow organisation, which are described for the first time in this paper The backbone of the system is a physics- and workflow-oriented data structure which allows for the deployment of a fully modular and flexible workflow organisation. The data structure is designed to be generic for any tokamak device and can be used to address physics simulation results, experimental data (including description of subsystem hardware) and engineering issues (C) 2010 Elsevier B.V All rights reserved
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| 6. |
- Imbeaux, F., et al.
(författare)
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Data structure for the European Integrated Tokamak Modelling Task Force
- 2008
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Ingår i: 35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets; Hersonissos, Crete; Greece; 9 June 2008 through 13 June 2008. - 9781622763351 ; 32:2, s. 1126-1129
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Konferensbidrag (refereegranskat)
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| 7. |
- Manduchi, G., et al.
(författare)
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A universal access layer for the Integrated Tokamak Modelling Task Force
- 2008
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Ingår i: Fusion Engineering and Design. - : Elsevier BV. - 0920-3796. ; 83:2-3, s. 462-466
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Tidskriftsartikel (refereegranskat)abstract
- The Integrated Tokamak Modelling (ITM) Task Force aims at providing a suite of codes for preparing and analyzing future ITER discharges. In the framework of the ITM, the universal access layer (UAL) provides the capability of storing and retrieving data involved in simulation. The underlying data structure is hierarchical and the granularity in data access is given by the definition of a set of consistent physical objects (CPOs). To describe the data structure of the overall ITM database, the XML schema description (XSD) has been used. Originally intended to describe the structure of XML documents, XSD is used here to provide an unambiguous way of describing how data are structured, regardless of the actual implementation of the underlying database.The MDSplus-based UAL implementation is currently under test and other prototypes for investigating alternative data storage systems are foreseen.
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| 8. |
- Guillerminet, B., et al.
(författare)
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Gateway: New high performance computing facility for EFDA task force on integrated Tokamak modelling
- 2010
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Ingår i: Fusion Engineering and Design. - : Elsevier BV. - 0920-3796. ; 85:3-4, s. 410 - 414
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Konferensbidrag (refereegranskat)abstract
- The EFDA task force on Integrated Tokamak Modelling (ITM-TF) is providing the EU fusion community with a complete and flexible suite of reliable software tools and codes able to simulate the next ITER and DEMO plasma discharges. EFDA has launched the Gateway project as the first computing facility to be jointly used by EU fusion associations.The Gateway has been designed to allow the ITM-TF members to work together on a common platform and share their codes, developments tools and technologies as well as to make able the inter-operation with tera-scale supercomputer facilities. Technically the Gateway is a rather small high computing facility in operation since 2008, with 1 Teraflops of theoretical peak and 100 Terabytes shared storage area for experimental and simulation data.This paper describes the information technologies involved in the Gateway facility, particularly as regards the low latency interconnect network for multi-core platform as well as fast I/O solutions implemented with storage over Infiniband and high performance parallel file systems. The solutions adopted on the Gateway facility had undergone to specific benchmarks showing excellent performances in typical fusion data handling issues. Finally the interoperability between Gateway and ENEA CRESCO supercomputer will be described showing the access solutions that allow the exploitation of tera-scale supercomputer facilities.
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| 9. |
- Guillerminet, B., et al.
(författare)
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High Performance Computing tools for the Integrated Tokamak Modelling project
- 2010
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Ingår i: Fusion Engineering and Design. - : Elsevier BV. - 0920-3796. ; 85:3-4, s. 388 - 393
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Tidskriftsartikel (refereegranskat)abstract
- Fusion Modelling and Simulation are very challenging and the High Performance Computing issues are addressed here. Toolset for jobs launching and scheduling, data communication and visualization have been developed by the EUFORIA project and used with a plasma edge simulation code.
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| 10. |
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