Calculated and Experimental Investigations of Helical MCG with Output Energy of 10 MJ

Abstract

High initial currents are required for effective operation of multi-element disk magneto-cumulative generators (DMCG). The DMCG powering is provided by an energy preamplifier (helical MCG). Having a lot of contact connections located on a small radius, it is necessary to power the DMCG during a short time period; that is the preamplifier should be of high-speed. In the report, there are the results of the first experiment with a high-speed helical MCG with an internal diameter of the turns of 320 mm. The generator provided the current of 8.5 MA (magnetic energy of 10.6 MJ) with a characteristic rise time of 38 µs in the load of 300 nH at the energy powering of 120 kJ; this is equal to the initial inductance of the 15-element DMCG with a HE-charges of 480 mm diameter.