An accumulator/compressor ring for Ne+ ions

The primary goal of the High Energy Density Physics (HEDP) program is to create an extremely bright ion beam at low duty cycle. For example, a typical set of parameters is: Particle type = Ne+; Ion energy = 20.1 MeV; One ion pulse = 1 (micro)C, 1 ns, 1 mm2; and Repetition rate = 1 Hz. This would give a volume density of ∼1012 particles/mm3, which is several orders of magnitude higher than any existing proton machines (typically 108 - 109 particles/mm3, see reference [1]). On the other hand, however, the beam power is very low. At 20.1 MeV, 1 (micro)C and 1 Hz, one has: Beam power = 20.1 W. This leads to the following observation: In an HEDP machine, beam loss is a non-issue. This has important implication in the machine design. The machine is fundamentally different from those high power (∼ MW) proton machines such as PSR, ISIS, SNS, RIA, GSI and JPARC, of which the machine design is dominated by beam loss control. A second observation is that, as it stands now, the HEDP program has limited funds (several $M). The hardware design needs to be as simple and realistic as possible