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IFMIF, the European–Japanese efforts under the Broader Approach agreement towards a Li(d,xn) neutron source: Current status and future options [in press]

Knaster, Juan; Arbeiter, Frederik; Cara, Ph.; Chel, Stéphane; Facco, Alberto; Heidinger, Roland; Ibarra, Ángel; Kasugai, Atsushi; Kondo, Hiroo; Miccichè, Gioacchino; Ochiai, K.; O'Hira, Shigeru; Okumura, Yoshikazu; Sakamoto, K.; Wakai, Eiichi

Abstract (englisch):
The necessity of a neutron source for fusion materials research was identified already in the 70s. Though neutrons induced degradation present similarities on a mechanistic approach, thresholds energies for crucial transmutations are typically above fission neutrons spectrum. The generation of He via 56Fe (n,α) 53Cr in future fusion reactors with around 12 appm/dpa will lead to swelling and structural materials embrittlement. Existing neutron sources, namely fission reactors or spallation sources lead to different degradation, attempts for extrapolation are unsuccessful given the absence of experimental observations in the operational ranges of a fusion reactor. Neutrons with a broad peak at 14 MeV can be generated with Li(d,xn) reactions; the technological efforts that started with FMIT in the early 80s have finally matured with the success of IFMIF/EVEDA under the Broader Approach Agreement. The status today of five technological challenges, perceived in the past as most critical, are addressed. These are: 1. the feasibility of IFMIF accelerators, 2. the long term stability of lithium flow at IFMIF nominal conditions, 3. the poten ... mehr

Zugehörige Institution(en) am KIT Institut für Neutronenphysik und Reaktortechnik (INR)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1016/j.nme.2016.04.012
ISSN: 2352-1791
URN: urn:nbn:de:swb:90-568465
KITopen ID: 1000056846
HGF-Programm 31.03.09; LK 01
Erschienen in Nuclear materials and energy
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