Direct-driven target implosion in heavy ion fusion

8th International Conference on Inertial Fusion Sciences and Applications

Noguchi, K.^1 ; Suzuki, T.^1 ; Kurosaki, T.^1 ; Barada, D.^1 ; Kawata, S.^1 ; Ma, Y.Y.^1 ; Ogoyski, A.I.^2

Utsunomiya University, Utsunomiya

321-8585, Japan^1

Varna Technical University, B-Varna

9010, Bulgaria^2

关键词: Alignment error;    Beam illumination;    Direct-driven;    Fusion energy;    Heavy-ion fusions;    High frequency HF;    Non-uniformities;    Target implosions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012078/pdf
DOI  :  10.1088/1742-6596/688/1/012078

来源: IOP

【 摘 要 】

In inertial confinement fusion, the driver beam illumination non-uniformity leads a degradation of fusion energy output. A fuel target alignment error would happen in a fusion reactor; the target alignment error induces heavy ion beam illumination non-uniformity on a target. On the other hand, heavy ion beam accelerator provides a capability to oscillate a beam axis with a high frequency. The wobbling beams may provide a new method to reduce or smooth the beam illumination non-uniformity. First we study the effect of driver irradiation non-uniformity induced by the target alignment error (dz) on the target implosion. We found that dz should be less than about 130 μm for a sufficient fusion energy output. We also optimize the wobbling scheme. The spiral wobbling heavy ion beams would provide a promissing scheme to the uniform beam illumination.