Light ion beam fusion

The Inertial Confinement Fusion Program with Light Ion Drivers is developing high intensity ion beam driver technology on PBFA I and will apply that technology to study implosion hydrodynamics of small fuel masses on PBFA II. Power concentration is the key issue. The research on beam production and focusing is interpreted to give guidelines for future research in the ICF Program. Recent progress is reviewed briefly and the impact of recently discovered problems of ion impurities and beam energy spread are discussed. The lithium ion option for PBFA II has been chosen, and the rationale for that decision is summarized.