Complex sentence: Each of the 6 radial arms is a pulse forming line delivering a pulse of energy to the center, whose capacitors store a total of 10 MJ of energy and can create microsecond pulses of 120 kV and 6 million amperes.
Split into simpler sentences: Each of the 6 radial arms is a pulse forming transmission line containing capacitors, delivering a pulse of energy to the center. The capacitors store a total of 10 MJ of energy and the device can create microsecond pulses of 120 kV and 6 million amperes.