The status of a distributed radiator heavy-ion target design is described. In integrated calculations this target ignited and produced 390–430 MJ of yield when driven with 5.8–6.5 MJ of 3–4 GeV Pb ions. The target has cylindrical symmetry with disk endplates. The ions uniformly illuminate these endplates in a 5 mm radius spot. Considerations which led to this design are discussed together with some previously unused design features: low-density hohlraum walls in approximate pressure balance with internal low-Z fill materials, radiation symmetry determined by the position of the radiator materials and particle ranges, and early time pressure symmetry possibly influenced by radiation shims. How this target scales to lower input energy or to lower beam power is discussed. Variant designs with more realistic beam focusing strategies are also discussed. Tradeoffs required for targets which accept higher particle energies are described.
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Tabak et al. (1998) studied this question.