Abstract
The High Fidelity Monte Carlo for fusion neutronics project HIFIMC aims at providing the computational resources for the development, testing and application of advanced modeling and simulation techniques as required for the design and optimization of upcoming fusion reactors like ITER, DEMO, HELIAS and related research facilities like IFMIF or DONES. Large-scale simulations are required to provide high fidelity results to assess the performance of such facilities. These include numerous time consuming Monte Carlo simulations for describing the transport of particles (neutrons and gammas) through the complex and heterogeneous geometry. The main computational tool for such application is the MCNP Monte Carlo code, developed at LANL, US, and the coupled transport-activation tool R2Smesh, developed at KIT. Several concurrent research topics have been conducted and are reported here. Further development of R2Smesh on enhancing performance and studies on convergence issues in meshing of the activation responses are required to qualify the tools for many large nuclear performance and radiation shielding applications in fusion devices. Verification and validation of alternative codes, like GEANT 4, developed at CERN, CH, are supporting these efforts. Applications to port systems in ITER (next step fusion reactor under construction in France), breeding blankets in DEMO (Demonstration fusion reactor), full reactor of HELIAS (Helical-Axis Advanced Stellarator) and irradiation test systems of IFMIF/DONES (International Fusion Material Irradiation Facility/DEMO-oriented neutron source) are presented. It is shown that the tools on high-performance computing platforms are capable to tackle the challenging problems of radiation shielding and activation in complex geometries involving both deep penetration and radiation streaming.
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Acknowledgements
This work was performed on the computational resource ForHLR II funded by the Ministry of Science, Research and the Arts Baden-Württemberg and DFG (“Deutsche Forschungsgemeinschaft”). Parts of the work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement No. 633053. Parts of the work were supported by Fusion for Energy (F4E), Barcelona, through the Specific Grant Agreements F4E-GRT-615 and F4E-FPA-395.02. The views and opinions expressed herein do not necessarily reflect those of the European Commission. Parts of the work has been funded by the ITER Organization under contract IO/17/CT/4300001445. Parts of the work was carried out using an adaption of A-lite and C-Model which were developed as a collaborative effort between AMECFW (International), UKAEA (UK), ENEA Frascati (Italy), F4E (Spain), FDS Team of INEST (PRC), IDOM (Spain), ITER Organization (France), QST (Japan), KIT (Germany), UNED (Spain), University of Wisconsin-Madison (USA).
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Weinhorst, B. et al. (2019). High Fidelity Monte Carlo for Fusion Neutronics. In: Nagel, W., Kröner, D., Resch, M. (eds) High Performance Computing in Science and Engineering ' 18. Springer, Cham. https://doi.org/10.1007/978-3-030-13325-2_28
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DOI: https://doi.org/10.1007/978-3-030-13325-2_28
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