Preliminary analysis of alternative divertors for DEMO

Militello, F.; Aho-Mantila, L.; Ambrosino, R.; Body, T.; Bufferand, H.; Calabro, G.; Ciraolo, G.; Coster, D.; Di Gironimo, G.; Fanelli, P.; Fedorczak, N.; Herrmann, A.; Innocente, P.; Kembleton, R.; Lilburne, J.; Lunt, T.; Marzullo, D.; Merriman, S.; Moulton, D.; Nielsen, A.H.; Omotani, J.; Ramogida, G.; Reimerdes, H.; Reinhart, M.; Ricci, P.; Riva, Fabio Matteo; Stegmeir, A.; Subba, F.; Suttrop, W.; Tamain, P.; Teschke, M.; Thrysoe, A.; Treutterer, W.; Varoutis, S.; Wensing, M.; Wilde, A.; Wischmeier, M.; Xiang, L.Y.

doi:10.1016/j.nme.2021.100908

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Journal article

Preliminary analysis of alternative divertors for DEMO

Militello, F. UKAEA, Culham Science Centre, Abingdon, Oxon, UK
Aho-Mantila, L. VTT Technical Research Centre of Finland, Finland
Ambrosino, R. C.R.E.A.T.E. Consortium, ENEA, Napoli, Italy
Body, T. Max-Planck Institut für Plasmaphysik, Garching, Germany
Bufferand, H. CEA, IRFM, St. Paul-Lez-Durance, France
Calabro, G. DEIm Department, University of Tuscia, Viterbo, Italy
Ciraolo, G. CEA, IRFM, St. Paul-Lez-Durance, France
Coster, D. Max-Planck Institut für Plasmaphysik, Garching, Germany
Di Gironimo, G. C.R.E.A.T.E. Consortium, ENEA, Napoli, Italy
Fanelli, P. DEIm Department, University of Tuscia, Largo dell’Universitá, Viterbo, Italy
Fedorczak, N. CEA, IRFM, St. Paul-Lez-Durance, France
Herrmann, A. Max-Planck Institut für Plasmaphysik, Garching, Germany
Innocente, P. Consorzio RFX, Euratom-ENEA Association, Padova, Italy
Kembleton, R. Eurofusion PMU, Garching, Germany
Lilburne, J. UKAEA, Culham Science Centre, Abingdon, Oxon, UK
Lunt, T. Max-Planck Institut für Plasmaphysik, Garching, Germany
Marzullo, D. C.R.E.A.T.E. Consortium, ENEA, Napoli, Italy
Merriman, S. UKAEA, Culham Science Centre, Abingdon, Oxon, UK
Moulton, D. UKAEA, Culham Science Centre, Abingdon, Oxon, UK
Nielsen, A.H. PPFE, Department of Physics, DTU, Denmark
Omotani, J. UKAEA, Culham Science Centre, Abingdon, Oxon, UK
Ramogida, G. ENEA, Frascati, Italy
Reimerdes, H. Swiss Plasma Center (SPC-EPFL), Lausanne, Switzerland
Reinhart, M. Eurofusion PMU, Garching, Germany
Ricci, P. Swiss Plasma Center (SPC-EPFL), Lausanne, Switzerland
Riva, Fabio Matteo ORCID Istituto ricerche solari Aldo e Cele Daccò (IRSOL), Faculty of Informatics, Università della Svizzera italiana Switzerland - UKAEA, Culham Science Centre, Abingdon, Oxon, UK
Stegmeir, A. Max-Planck Institut für Plasmaphysik, Garching, Germany
Subba, F. NEMO Group, Politecnico di Torino, Italy
Suttrop, W. Max-Planck Institut für Plasmaphysik, Garching, Germany
Tamain, P. CEA, IRFM, St. Paul-Lez-Durance, France
Teschke, M. Max-Planck Institut für Plasmaphysik, Garching, Germany
Thrysoe, A. PPFE, Department of Physics, DTU, Denmark
Treutterer, W. Max-Planck Institut für Plasmaphysik, Garching, Germany
Varoutis, S. Karlsruhe Institute of Technology (KIT), Germany
Wensing, M. Swiss Plasma Center (SPC-EPFL), Lausanne, Switzerland
Wilde, A. UKAEA, Culham Science Centre, Abingdon, Oxon, UK
Wischmeier, M. Max-Planck Institut für Plasmaphysik, Garching, Germany
Xiang, L.Y. UKAEA, Culham Science Centre, Abingdon, Oxon, UK

2021

Published in:

Nuclear Materials and Energy. - 2021, vol. 26, p. 100908

Alternative divertor configurations

English A physics and engineering analysis of alternative divertor configurations is carried out by examining benefits and problems by comparing the baseline single null solution with a Snowflake, an X- and a Super-X divertor. It is observed that alternative configurations can provide margin and resilience against large power fluctuations, but their engineering has intrinsic difficulties, especially in the balance between structural solidity and accessibility of the components and when the specific poloidal field coil positioning poses further constraints. A hybrid between the X- and Super-X divertor is proposed as a possible solution to the integration challenge.

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