High voltage high brightness electron accelerators with MITL voltage adder coupled to foilless diodes

Summary form only given. It has recently been experimetnally and theoretically demonstrated that foilless diodes can be successfully coupled to self-magnetically insulated transmission line voltage adders to produce very small high-brightness, high-definition (no halo) electron beams. The RADLAC/SMILE experience opened the path to a new approach in high-brightness, high-energy induction accelerators. There is no beam drifting through the device. The voltage addition occurs in a center conductor, and the beam is created at the high voltage end in an applied magnetic field diode. This work was motivated by the remarkable success of the HERMES-III accelerator and the need to produce small-radius, high-energy, high-current electron beams for air propagation studies and flash X-ray radiography. Design examples of devices that can produce multikiloamp electron beams of as high as 100 MV energies and with radii as small as 1 mm have been considered.