1. Laser pulse shape designer for direct-drive inertial confinement fusion implosions.
- Author
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Tao Tao, Guannan Zheng, Qing Jia, Rui Yan, and Jian Zheng
- Subjects
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INERTIAL confinement fusion , *IMPLOSIONS , *LASER pulses , *MACHINE learning , *DESIGNERS - Abstract
Pulse shaping is a powerful tool for mitigating implosion instabilities in direct-drive inertial confinement fusion (ICF). However, the high-dimensional and nonlinear nature of implosions makes the pulse optimization quite challenging. In this research, we develop a machine-learning pulse shape designer to achieve high compression density and stable implosion. The facility-specific laser imprint pattern is considered in the optimization, which makes the pulse design more relevant. The designer is applied to the novel double-cone ignition scheme, and simulation shows that the optimized pulse increases the areal density expectation by 16% in one dimension, and the clean-fuel thickness by a factor of four in two dimensions. This pulse shape designer could be a useful tool for direct-drive ICF instability control. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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