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CSJA2 HFZ

CSJA2 HFZ. The strands move in the direction of the Lorentz Force. The Nb 3 Sn fractures at the grain boundaries and thus we see the grain structure across the filaments. Click for: Extended Zoom into area with broken filaments. Etching the Cu away allows broken filaments to fall out.

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CSJA2 HFZ

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  1. CSJA2HFZ The strands move in the direction of the Lorentz Force The Nb3Sn fractures at the grain boundaries and thus we see the grain structure across the filaments. Click for: Extended Zoom into area with broken filaments Etching the Cu away allows broken filaments to fall out. Filaments fractured by strand bending Opening up void space where strands can move more easily. Lorentz Force Peter J. Lee & Carlos Sanabria FESEM: SE

  2. Acknowledgements • Work funded by ITER Organization with additional funding from the State of Florida and US DOE Office of Fusion Energy Science Grant DE‑FG02‑06ER54881and US-ITER contract 6400011187. • SULTAN-tested cable was provided by courtesy of Pierluigi Bruzzone (Plasma Physics Research Center) with agreement from Fusion for Energy. • CSJA2 cable was also provided by arrangement with the Japan Atomic Energy Agency (JAEA), Superconductor Technology Group, Division of Fusion Energy Technology. • Metallographic assistance from Bill Starch, Timothy Blum and Jen Gavin (FSU).

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