Accel-Decel Ion Injector of High Line Charge Density Beams
Abstract
HEDP applications and the modular linac systems approach to HIF, require high line charge density ion beams. An efficient method to obtain high line charge density beams is to extract a long pulse, high current beam from an ion gun at high energy (ACCEL), and let the beam pass through a decelerating field to compress it (DECEL), thus obtaining a high line charge density beam. The low energy beam bunch is loaded into a solenoid and matched to a Brillouin equilibrium flow, where it is accelerated at constant line charge density. A proof-of-principle experiment, will extract a 500 ns, 12 mA, potassium beam at 285 keV, decelerate it to 30 keV, and load it into a 3 T solenoid where it will be accelerated to 80-130 keV (head to tail) at constant line charge density to a final current of 24 mA and 250 ns pulse length. We will present the physics design and numerical simulations of the proposed experiments.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- November 2004
- Bibcode:
- 2004APS..DPPCP1120H