Electron-Beam Corkscrew Motion Through the Scorpius Injector

Scorpius is a multipulse linear induction accelerator (LIA) under development for flash radiography. The injector uses 42 solenoids to transport the beam through more than 7 m before it enters the main accelerator. Therefore, the beam might be susceptible to corkscrew motion, which is exacerbated by beam energy spread and focusing magnet misalignments. For energy spread and alignment tolerances expected for Scorpius, a magnetic tune designed to transport a matched beam is shown to produce minimal corkscrew motion.