We present the design of the highhyphen;voltage (30 MV) Appliedhyphen;Bion diode that is now being tested on the PBFAhyphen;II accelerator at Sandia National Laboratories. This diode design is the first application of a new set of numerical design tools that have been developed over the past several years. Furthermore, this design represents significant departures from previous designs due to much higher voltage and the use of a nonprotonic ion, Li+. The higher voltage increases the magnetic field strength required to insulate the diode from 1 to 2 T of previous diodes to 3ndash;7thinsp;T. This represents a very large increase in the magnetic field energy and the magnetic forces exerted on the fieldhyphen;coil structures. Our new design incorporates changes in the fieldhyphen;coil locations to significantly reduce the field energy and the forces on the fieldhyphen;coil structures. The use of nonprotonic ions introduces a new complication in that these ions will be stripped when they penetrate material, i.e., the gas cell membrane. The importance of current neutralization, chargehyphen;exchange reactions, and the conservation of canonical angular momentum are discussed in the context of designing light ion diodes suitable as drivers for inertial confinement fusion. We have simulated the performance of this diode design using the electromagnetic particlehyphen;inhyphen;cell code,magic. We find that the most sensitive point in the power flow is the transition from the selfhyphen;magnetically insulated transmission line to the applied field region of the diode.
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