RFP-MSR Hybrid Reactor Model for Tritium Breeding and Actinides Transmutation †

Stefano Murgo (), Chiara Bustreo, Marco Ciotti, Guglielmo Lomonaco (), Francesco Paolo Orsitto, Roberto Piovan, Nicola Pompeo, Giovanni Ricco, Marco Ripani and Fabio Panza ()
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Stefano Murgo: Department of Industrial, Electronic and Mechanical Engineering, Università degli studi Roma Tre, 00146 Roma, Italy
Chiara Bustreo: Consorzio RFX, 35127 Padova, Italy
Marco Ciotti: ENEA-Dipartimento FSN, 00044 Frascati, Italy
Guglielmo Lomonaco: INFN, Sezione di Genova, 16146 Genova, Italy
Francesco Paolo Orsitto: ENEA-Dipartimento FSN, 00044 Frascati, Italy
Roberto Piovan: Consorzio RFX, 35127 Padova, Italy
Nicola Pompeo: Department of Industrial, Electronic and Mechanical Engineering, Università degli studi Roma Tre, 00146 Roma, Italy
Giovanni Ricco: INFN, Sezione di Genova, 16146 Genova, Italy
Marco Ripani: INFN, Sezione di Genova, 16146 Genova, Italy
Fabio Panza: INFN, Sezione di Genova, 16146 Genova, Italy

Energies, 2024, vol. 17, issue 12, 1-12

Abstract: The studies on the development of fusion–fission hybrid reactors (FFHR) have gained consensus in recent years as an intermediate step before fusion energy. This work proposes a possible approach to FFHRs based on the coupling of a Reversed Field Pinch fusion machine and a Molten Salt Subcritical fission test bed. The proposed test bed is characterized by the coexistence of a fast-neutron fission core and a dedicated thermal-neutron zone, allowing the performing of tritium breeding and actinides transmutation studies. The neutronic design solutions and the results obtained by the irradiation of FLiBe salt (inside the thermal-neutron zone) and of an actinide target (inside the core) are shown. The outcomes of the analysis reveal the potential of FFHR systems as breeding/burner systems. In particular, the results regarding tritium breeding are very encouraging as the system is demonstrated to be able to reach a very high Tritium Breeding Ratio.

Keywords: fusion–fission hybrid reactors; tritium breeding; nuclear waste conversion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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