Optimization of Compact Hohlraum Design to ICF Studies
Résumé
Proposed optimization of a compact hohlraum design with parallel-driven Z-pinch x-ray sources is discussed. This design was jointly proposed earlier by SNL and UNR [1] and was experimentally demonstrated in full configuration at the 1.7 MA UNR Zebra generator [2]. A parallel driven multiple Z-pinch sources scheme was a significant advance in terms of driver requirements compared to a traditional double-ended cylindrical pinch scheme. Considering only geometric arguments from [1], it became evident that the new scheme could be more efficient by a factor of ~ 4.5 in terms of energy requirements. The prospective results of compact hohlraum scheme optimization are described: improvement of geometry of a compact hohlraum with parallel driven multiple Z-pinches sources; application of Au wires (Za = 79) instead of traditionally used W (Za = 74) wires; and employment of double planar foils liner (DPFL) instead of DPWA in hohlraums x-ray sources. This work was supported by NNSA under DOE grant DE-NA0003047. References [1] B. Jones et al., Physical Review Letters 104, 125001 (2010) [2] V.L. Kantsyrev et al., Physical Review E 90, 063101 (2014) ORAL CONTRIBUTION