Indirect-drive ICF target concepts for the X-1 Z-pinch facility

We describe designs of hohlraums and capsules for both ignition (similar to 1-10 MJ) and high yield (up to similar to 200 MJ) Z-pinch driven indirect- drive ICF concepts. Two potential Z-pinch hohlraum configurations -- 1) the "static wall" or "on-axis" hohlraum; and 2) the "imploding liner" or "dyna mic" hohlraum -- are considered. Both concepts involve cryogenic, DT-filled capsules (similar to 2-4 mm in diameter) with Be or CH ablators (O, F, and Cu are currently being considered as dopants). Both types of hohlraums inv olve a Helium and/or CH foam fill. In the static wall hohlraum concept, the ICF capsule is isolated from the x-ray generation region. Advantages in th e areas of capsule drive symmetry and diagnostic access might be gained fro m this arrangement. In the dynamic hohlraum, the ICF capsule has a direct v iew of the stagnation radiation. The potential advantage would result from the higher x-ray intensity and larger total capsule absorbed energy.