Self-pinched transport theory for the SABRE ion diode

The efficiency of delivering an ion beam to an inertial confinement fusion target depends on the ability to control the breakdown of the gas in the transport region. The gas in the reactor vessel must provide excellent charge neutralization and specified current neutralization to permit the beam transport and focusing to a <1 cm radius, spherical target. An interesting scheme for transport, using residual effective (or net) current for confinement, is the “self-pinch” mode. Here, we present recent self-pinch theory results and ideas for beam conditioning, focusing and transport in the self-pinch mode for the SABRE experiment. Results from the IPROP hybrid code are discussed