Pulsed power options for large EM launchers

Large EM launchers require multi-gigawatt power levels and megampere currents to be supplied at multi-kilovolts during the launch of a high-speed projectile. Power systems that operate under these conditions are not readily available and expert development is therefore needed to design, assemble and operate them safely. The options available for energy storage and gigawatt power delivery are discussed. Some of the larger systems that have been built are described and their features discussed.