Preliminary Design Study of the NSWC Proton Induction Linac

A 5 MeV, 100 A, 3 ¿sec proton beam is required for the injection into a compact accelerator which uses quadrupole lenses in a betatron-like device at NSWC. As an injector, an induction linac is proposed to utilize technologies developed in magnetic and heavy ion fusion research: A 50 keV, 100 A, 3 ¿sec proton beam extracted from an ion source used for the PDX-type neutral beam injector, is accelerated by induction modules. The beam size is reduced by solenoidal lenses in three steps as beam energy is increased. The matching section is followed before injection to the quadrupole channel. We present preliminary design details of the proposed intense, long-pulse proton linac.