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Compact Tokamak Neutron Sources as a First Step Towards Hybrid Fission-Fusion Reactors

M. Zucchetti, F. Bombarda, B. Coppi, Z. S. Hartwig

Fusion Science and Technology / Volume 64 / Number 3 / September 2013 / Pages 493-497

DEMO and Next-Step Facilities / Proceedings of the Twentieth Topical Meeting on the Technology of Fusion Energy (TOFE-2012) (Part 2) Nashville, Tennessee, August 27-31, 2012 /

An Ignitor-like tokamak that is compact, high field, and high density device, could make full use of the its intense neutron flux, without reaching ignition as a source of neutrons for materials testing in support of a fission-fusion hybrid device. The main features of this High Field Neutron Source Facility, which would have about 50% more plasma volume than Ignitor, are illustrated and the R&D required in order to achieve relevant dpa quantities in test materials are discussed. Several full-power months of operation are sufficient to obtain relevant radiation damage values in terms of dpa, and a scoping study of shielding the magnetic insulators to reduce radiation damage has been performed.

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