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Megagauss Fields During Milliseconds

Description: A non-destructive, one megagauss magnet is now being designed in cooperation between Los Alamos and the National High Magnetic Field Laboratory (NHMFL) through joint funding by the US Department of Energy and the US NSF. The design combines two types of pulsed magnet now in use at the NHMFL: a capacitor-driven 'insert' magnet with a total pulse width of order 10 ms and a much larger 'outsert' magnet with a total pulse width of order 2 seconds that is driven by a controlled power source. The insert and outsert produce approximately 1/2 megagauss each. Although the design uses CuAg as the principal conductor further design efforts and materials development are exploring CuNb and stainless steel-clad copper as possible future alternatives. A crucial innovation was to employ wound steel strip (sheet) as a reinforcement in both insert and outsert coils. This gives extra strength due to the higher degree of cold-work possible in strip materials. For this leading edge magnet a key role is played by materials development. A major component, the 7 module 560 MVA controlled dc power supply required for the outsert, has been installed and commissioned.
Date: October 18, 1998
Creator: Campbell, L.J.; Embury, D.; Han, K.; Parkin, D.M.; Baca, A.; Kihara, K.H. et al.
Partner: UNT Libraries Government Documents Department