Archivio Istituzionale della RicercaIn order to assist the design of the future ITERLowerHybrid launcher, couplingcodesALOHA, from CEA/IRFM, TOPLHA, from Politecnico di Torino, and GRILL3D, developed by Dr. Mikhail Irzak (A.F. Ioffe Physico-Technical Institute, St. Petersburg, Russia) and operated by ENEA Frascati, have been compared with the updated (six modules with four active waveguides per module) Passive-Active Multi-junction (PAM) LowerHybridantennas. Both ALOHA and GRILL3D formulate the problem in terms of rectangular waveguides modes, while TOPLHA is based on boundary-value problem with the adoption of a triangular cell-mesh to represent the relevant waveguides surfaces. Several plasma profiles, with varying edge density and density increase, have been adopted to provide a complete description of the simulated launcher in terms of reflection coefficient, computed at the beginning of each LH module, and of power spectra. Good agreement can be observed among codes for all the simulated profiles.
Benchmark of coupling codes (ALOHA, TOPLHA and GRILL3D) with ITER-relevant Lower Hybrid antenna / Milanesio, Daniele; Hillairet, J.; Panaccione, L.; Maggiora, Riccardo; Artaud, J. F.; Bae, Y. S.; Barbera, A. M. A.; Belo, J.; Berger By, G.; Bernard, J. M.; Cara, P.; Cardinali, A.; Castaldo, C.; Ceccuzzi, S.; Cesario, R.; Decker, J.; Delpech, L.; Ekedahl, A.; Garcia, J.; Garibaldi, P.; Goniche, M.; Guilhem, D.; Hamlyn Harris, C.; Hoang, G. T.; Jia, H.; Huang, Q. Y.; Imbeaux, F.; Kim, S. H.; Lausenaz, Y.; Magne, R.; Marfisi, L.; Meschino, S.; Mirizzi, F.; Namkung, W.; Pajewski, L.; Peysson, Y.; Saille, A.; Schettini, G.; Schneider, M.; Sharma, P. K.; Tuccillo, A. A.; Tudisco, O.; Villari, R.; Vulliez, K.; Wuh, Y.; Zengh, Q.. - In: FUSION ENGINEERING AND DESIGN. - ISSN 0920-3796. - STAMPA. - 86:(2011), pp. 827-830. (Intervento presentato al convegno 26th Symposium of Fusion Technology (SOFT-26) tenutosi a Porto, Portugal nel 27 September - 1 October 2012) [10.1016/j.fusengdes.2010.12.036].
Benchmark of coupling codes (ALOHA, TOPLHA and GRILL3D) with ITER-relevant Lower Hybrid antenna
MILANESIO, DANIELE;MAGGIORA, Riccardo;
2011
Abstract
In order to assist the design of the future ITERLowerHybrid launcher, couplingcodesALOHA, from CEA/IRFM, TOPLHA, from Politecnico di Torino, and GRILL3D, developed by Dr. Mikhail Irzak (A.F. Ioffe Physico-Technical Institute, St. Petersburg, Russia) and operated by ENEA Frascati, have been compared with the updated (six modules with four active waveguides per module) Passive-Active Multi-junction (PAM) LowerHybridantennas. Both ALOHA and GRILL3D formulate the problem in terms of rectangular waveguides modes, while TOPLHA is based on boundary-value problem with the adoption of a triangular cell-mesh to represent the relevant waveguides surfaces. Several plasma profiles, with varying edge density and density increase, have been adopted to provide a complete description of the simulated launcher in terms of reflection coefficient, computed at the beginning of each LH module, and of power spectra. Good agreement can be observed among codes for all the simulated profiles.
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https://hdl.handle.net/11583/2417718
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