Study and design of hohlraum shape on Shenguang-Ⅲ facility

Jing Longfei; Jiang Shaoen; Ding Yongkun; Huang Tianxuan; Huang Yunbao

doi:10.3788/HPLPB201426.022006

Volume 26 Issue 02

Jan. 2014

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Article Navigation > High Power Laser and Particle Beams > 2014 > 26(02): 022006

Lu Bin, Cui Bohua. Analysis and design of terahertz waveguide filter[J]. High Power Laser and Particle Beams, 2013, 25: 1527-1529. doi: 10.3788/HPLPB20132506.1527

Citation:

Jing Longfei, Jiang Shaoen, Ding Yongkun, et al. Study and design of hohlraum shape on Shenguang-Ⅲ facility[J]. High Power Laser and Particle Beams, 2014, 26: 022006. doi: 10.3788/HPLPB201426.022006

Lu Bin, Cui Bohua. Analysis and design of terahertz waveguide filter[J]. High Power Laser and Particle Beams, 2013, 25: 1527-1529. doi: 10.3788/HPLPB20132506.1527

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Study and design of hohlraum shape on Shenguang-Ⅲ facility

doi: 10.3788/HPLPB201426.022006

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China;
2.
CAD Center Huazhong University of Science and Technology,Wuhan 430074,China

Received Date: 2013-07-17
Rev Recd Date: 2013-11-04
Publish Date: 2014-02-15

Abstract

Abstract

The time dependence of irradiation drive symmetry and intensity on the capsule in different shaped hohlraums and laser arrangement is investigated by a 3D view-factor code called IRAD3D. The simulation results show that the loss of energy by the wall of hohlraum is reduced for a much smaller hohlraum area in the ellipsoidal-shaped hohlraum, resulting in an increase in the fraction of energy absorbed by the capsule. The time-integrated Legendre mode P2 of asymmetry can be controlled in a low level in a validated length of hohlraum. The hohlraum can be shorter in ellipsoidal-hohlraum with two-cones irradiation. A smaller Legendre mode P4 is attained in a four-cones irradiation system but a worse mode M4 of azimuthal asymmetry appears. All of the asymmetry modes are in a good level in the ellipsoidal-hohlraum with two-cones irradiation, meanwhile there is a 25%-27% increase in the irradiation drive flux onto the capsule compared with the cylindrical hohlraums.
- irradiation drive symmetry,
- view-factor software IRAD3D,
- Shenguang-Ⅲ facility,
- hohlraum shape

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