Quasi-uniform tamped target for beam-driven warm dense matter experiments

A tamped target is proposed for making quasi-uniform warm dense matter using highly energetic heavy ion beams. The target is composed of two layers, in which an inner material is set to be low-Z low density matter, in contrast, an outer shell filled by high-Z high density matter. We compare hydrodynamic behaviors of a mono-layer target to the tamped target driven by modified KEK 500 MeV booster. Results show that both targets can reach a warm dense state. In particular, the tamped target can achieve well defined warm dense state with long scale. We also discuss diagnostics for the tamped target. (author)