X-ray ``burn through'' studies for symmetry control considerations in support of magnetic-indirect-drive fusion platform development
Abstract
Numerical simulations investigating the dependence of shine-shield material and thickness for mode-selective, time-dependent control of P2 and P4 Legendre mode asymmetries for magnetic-indirect-drive (MID) target designs are presented. The MID concept uses a plasma pinch to create x-rays within a primary hohlraum directing them into a secondary hohlraum where the resultant bath of x rays ablates and compresses a capsule containing deuterium and tritium fuel to high temperatures, creating fusion. A shine-shield is used to control the radiation flow from the primary to the secondary hohlraum and shape the implosion drive, including eliminating the pole-hot x-ray flux that would otherwise be seen by the capsule. We describe design options and the feasibility for exercising time-dependent control over low-mode asymmetries that are independent of hohlraum length.
Work performed by Los Alamos National Laboratory under contract 89233218CNA000001 for the National Nuclear Security Administration of the U.S. Department of Energy. (LA-UR-19-26039).- Publication:
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APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..DPPUO7010F