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Owen, E.W.; Shimer, D.W.; Wang, S.T.
Lawrence Livermore National Lab., CA (USA)1983
Lawrence Livermore National Lab., CA (USA)1983
AbstractAbstract
[en] Alternative methods of connecting similar mutually coupled coils to their power supplies and dump resistors are investigated. The circuits are evaluated for both operating and fault conditions. The factors considered are the voltage to ground during a dump, short circuits, open circuits, quenches, and failure of the protection system to detect a quench. Of particular interest are the currents induced in coils that remain superconducting when one or more coils quench. The alternative connections include combined power supplies, individual dump resistors, combined resistors and series and parallel dump resistors. A new circuit that contains coupling resistors is proposed. The coupling resistors do not affect normal fast dumps but reduce the peak induced currents while also reducing the energy rating of the dump resistors. Another novel circuit, the series circuit with diodes, is discussed. The MFTF-B central-cell solenoids are used as an example
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30 Nov 1983; 6 p; 10. symposium on fusion engineering; Philadelphia, PA (USA); 5-9 Dec 1983; CONF-831203--141; Available from NTIS, PC A02/MF A01; 1 as DE84012602
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