Helical magneto–cumulative generator 280 mm in Diameter
V. A. Demidov, S. A. Kazakov, A. S. Boriskin, Yu. V. Vlasov, V. A. Yanenko, N. I. Nikolaev, S. I. Volodchenkov
Institute of Experimental Physics (VNIIEF), Russian Federation Nuclear Center, Sarov, 607188 Russia
Keywords: helical magneto–cumulative generator, disk magneto–cumulative generator, preamplifier, power, characteristic current rise time
Abstract
Several possibilities of preamplifier energy and power increasing are considered: using a more powerful (HMX–based) conical HE–charge in the central tube of the magneto–cumulative generator, using a magnetic flux finish pressing out device with axial initiation of the HE charge, and increasing the inner diameter of the helix. A magneto–cumulative generator (MCG) with a helix 280 mm in diameter (MCG–280) is developed. The new preamplifier has a power of ≈400 GW and is able to power a ten–element DMCG480 with an initial inductance of ≈0.2 m H by a current of ≈10 MA with a characteristic current rise time (by a factor of e at the final stage of its operation) τe = 32 μs.
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