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Many years work on the development of magnetocumulative generators of ultra-high magnetic fields has led to the creation of the cascade MC-1 generator, in which a magnetic field of more than 28 MGs was recorded in 1998. This device consists of a generator solenoid (the first cascade) with internal and external diameters of 175 mm and 200 mm respectively and a length of 500 mm, and two internal cascades with diameters of 28/spl times/35 mm and 12/spl times/17 mm and a length of /spl sim/200 mm. One-cascade system of explosive compression, consisting of the main HE-charge with diameters of 360/spl times/650 mm, a length of 350 mm and a mass of /spl sim/170 kg, steel cylinder-impactor with an external diameter of 356 mm and a thickness of 7 mm, and internal HE-charge with diameters of 200/spl times/300 mm and a length of 280 mm, is located on the outside of the solenoid. The MC-1 generator solenoid is powered with a current of 4-5 MA. MC-1 generator operation time (without powering time and HE-charge detonation time) is about 15 /spl mu/s, maximum liner implosion velocity is more than 6 km/s, the magnetic field derivative reaches values of /spl sim/5 10/sub 13/ Gs/s. The diameter of the final field volume is 24 mm, its length is /spl sim/100 mm.