Speaker
Bolun Chen
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/O4.208.pdf
Experimental progress of pulse shape integrated implosion on SGIII facility
Bolun Chen1, Tianxuan Huang1, Shiyang Zou2, Zhongjing Chen1, Wei Jiang1, Fengjun Ge2,
Jiamin Yang1
1
Laser Fusion Research Centre, China Academic of Engineering Physics, Mianyang, China
2
Institute of Applied Physics and Computational Mathematics, Beijing, China
The ShenGuang III(SGIII) laser facility was completed in 2015 which has 48 beams with
wavelength λ =0.35 μm, at peak power 40-60TW. From 2016 pulse shaped implosion
experiment was carried out on SGIII facility with gas filled cylindrical hohlraum. Implosion
performance with DD filled capsule was investigated by varying the trough width. Several
integrated implosion tuning platforms were implemented and several technical and engineering
problems were emerged. Many efforts were engaged in the improvement of the capsule also the
assembling arts of the hohlraum last year. In 2017, 2D backlit imaging technique was used for
the measurement of the driven symmetry. Both of the backlit imploded thin shell and thick shell
methods were performed. Symmetry tuning was demonstrated by varying the fraction of the
power on the inner versus outer beams. The ratio of shell shape P2/P0 asymmetry to the cone
fraction is coincided with the view-factor simulation. The pulse shaped integrated implosion
was also demonstrated after the symmetry tuning by varying the power of picket pulse. The
highest neutron yield 8.8E9 was obtained corresponding to nearly 30% YoC. In the presentation,
we will introduce the recently experimental progress on SGIII facility. Treated as the substituted
target of the cryogenic capsule, a good comprehension on the consequence of the recently
experiments will be helpful for the cryogenic capsule implosion experiments which would be
carried out in the next two years on SG-III facility.
