Nanocomposite Film Capacitors for High Energy Accelerators

Capacitors are a key component in many pulsed power systems, in particular power modulators for high energy accelerators. As switching technology improves, a need for capacitors at lower voltages (5-10 kV) has become more pronounced, especially for solid-state pulsed power systems. The desirable parameters for such capacitors include high energy density, high reliability, high peak current delivery, low loss, long life, and fast rise-time capability. This project will develop such capacitors by utilizing an advanced nanocomposite dielectric film that possesses a high dielectric constant combined with high dielectric strength and low loss. The device will be designed to enable high peak current delivery, fast rise-time, long life, and high reliability in a compact package. Commercial Applications and other Benefits as described by the awardee In addition to the application to DOE accelerators, the new capacitors should have military applications related to radar modulators and directed energy weapons, and commercial applications such as radar and snubbers for solid-state high-voltage switches