INDUCTION ACCELERATOR DEVELOPMENT FOR HEAVY-ION FUSION

For approximately a decade, the Heavy-Ion Fusion Accelerator Research (HIFAR) group at LBL has been exploring the use of induction accelerat ors with multiple beams as the driver for inertial-fusion targets. Sca led experiments have investigated the transport of space-charge-domina ted beams (SBTE), and the current amplification and transverse emittan ce control in induction linacs (MBE-4) with very encouraging results. In order to study many of the beam manipulations required by a driver and to further developed economically competitive technology, a propos al has been made in partnership with LLNL to build a 10 MeV accelerato r and to conduct a series of experiments collectively called the Induc tion Linac System Experiments (ILSE). The major components critical to the ILSE accelerator are currently under development. We have constru cted a full-scale induction module and we have tested a number of amor phous magnetic materials developed by Allied Signal to establish an ov erall optimal design. The electric and magnetic quadrupoles critical t o the transport and focusing of heavy-ion beams are also under develop ment. The hardware is intended to be economically competitive for a dr iver without sacrificing any of the physics or performance requirement s. This paper will concentrate on the recent developments and tests of the major components required by the ILSE accelerator.