TY - JOUR TI - Structural integrity of DEMO divertor target assessed by neutron tomography AU - Minniti, Triestino AU - Schoofs, Frank AU - Evans, Llion Marc AU - Kockelmann, Winfried AU - You, Jeong-Ha AU - Lewtas, Heather T2 - Fusion Engineering and Design AB - The divertor target plates are the most exposed in-vessel components to high heat flux loads in a fusion reactor due to a combination of plasma bombardment, radiation and nuclear heating. Reliable exhaust systems of such a huge thermal power required a robust and durable divertor target with a sufficiently large heat removal capability and lifetime. In this context, it is pivotal to develop non-destructive evaluation methods to assess the structural integrity of this component that, if compromised could reduced its lifetime. In this work we have demonstrated for the first time the feasibility of using neutron tomography to detect volumetric defects within DEMO divertor mock-ups with a spatial resolution of the order of hundreds of micrometers. Neutron tomography is applicable for studying complex structures, often manufactured from exotic materials which are not favourable for conventional non-destructive evaluation methods. This technique could be effectively used during research and development cycles of fusion component design or for quality assurance during manufacturing. DA - 2021/08/01/ PY - 2021 DO - 10.1016/j.fusengdes.2021.112661 DP - ScienceDirect VL - 169 SP - 112661 J2 - Fusion Engineering and Design LA - en SN - 0920-3796 UR - https://www.sciencedirect.com/science/article/pii/S0920379621004373 Y2 - 2021/07/15/20:19:10 KW - CuCrZr KW - Divertor target KW - Monoblock KW - Neutron tomography KW - Non-destructive evaluation KW - Qualification KW - Tungsten ER -