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  • Title: Pulsed-coil magnet systems for applying uniform 10-30 T fields to centimeter-scale targets on Sandia's Z facility.
    Author: Rovang DC, Lamppa DC, Cuneo ME, Owen AC, McKenney J, Johnson DW, Radovich S, Kaye RJ, McBride RD, Alexander CS, Awe TJ, Slutz SA, Sefkow AB, Haill TA, Jones PA, Argo JW, Dalton DG, Robertson GK, Waisman EM, Sinars DB, Meissner J, Milhous M, Nguyen DN, Mielke CH.
    Journal: Rev Sci Instrum; 2014 Dec; 85(12):124701. PubMed ID: 25554308.
    Abstract:
    Sandia has successfully integrated the capability to apply uniform, high magnetic fields (10-30 T) to high energy density experiments on the Z facility. This system uses an 8-mF, 15-kV capacitor bank to drive large-bore (5 cm diameter), high-inductance (1-3 mH) multi-turn, multi-layer electromagnets that slowly magnetize the conductive targets used on Z over several milliseconds (time to peak field of 2-7 ms). This system was commissioned in February 2013 and has been used successfully to magnetize more than 30 experiments up to 10 T that have produced exciting and surprising physics results. These experiments used split-magnet topologies to maintain diagnostic lines of sight to the target. We describe the design, integration, and operation of the pulsed coil system into the challenging and harsh environment of the Z Machine. We also describe our plans and designs for achieving fields up to 20 T with a reduced-gap split-magnet configuration, and up to 30 T with a solid magnet configuration in pursuit of the Magnetized Liner Inertial Fusion concept.
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