Photocathode detection system of X-ray streak camera for laser fusion

Gu Li; Zong Fangke; Li Xiang; Zhou Junlan; Yang Qinlao; Guo Baoping

doi:10.3788/IRLA201847.0817002

Photocathode detection system of X-ray streak camera was developed for the rapid calibration and detection of the cathode in laser inertia confinement fusion. Through the design of the trinity streak tube, the optimization of electronic optical system of the streak tube, the preparation of vacuum chamber and control system, the system was installed, integrated and tested, and the photocathode detection system was developed. A static test platform for the cathode system was set up and static characteristics were calibrated. The test results show that the excursion ratio of the three slits is 2.8% in the direction of the slit, 6.6% in the direction perpendicular to the slit, and the average magnification is 1.29 with the error in the range of 0.8%, edge spatial resolution better than 10 lp/mm. The newly developed system of X-ray streak camera photocathode detection can be used for the diagnostic study of laser fusion.

Photocathode detection system of X-ray streak camera for laser fusion

1. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province,College of Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China;

2. College of Information Engineering,Shenzhen University,Shenzhen 518060,China;

3. Photonics Research Centre,Shenzhen University,Shenzhen 518060,China;

4. Institute for Advanced Study,Shenzhen University,Shenzhen 518060,China

Received Date: 2018-03-05

Rev Recd Date: 2018-04-03

Publish Date: 2018-08-25

Key words:

Abstract: Photocathode detection system of X-ray streak camera was developed for the rapid calibration and detection of the cathode in laser inertia confinement fusion. Through the design of the trinity streak tube, the optimization of electronic optical system of the streak tube, the preparation of vacuum chamber and control system, the system was installed, integrated and tested, and the photocathode detection system was developed. A static test platform for the cathode system was set up and static characteristics were calibrated. The test results show that the excursion ratio of the three slits is 2.8% in the direction of the slit, 6.6% in the direction perpendicular to the slit, and the average magnification is 1.29 with the error in the range of 0.8%, edge spatial resolution better than 10 lp/mm. The newly developed system of X-ray streak camera photocathode detection can be used for the diagnostic study of laser fusion.

HTML

Reference (12)

[1]	Town R P, Bradley D K, Kritcher A, et al. Dynamic symmetry of indirectly driven inertial confinement fusion capsules on the National Ignition Facility[J]. Physics of Plasmas, 2014, 21(5):056313.
[2]	Hurricane O A, Callahan D A, Casey D T, et al. Fuel gain exceeding unity in an inertially confined fusion implosion[J]. Nature, 2014, 506:343-348.
[3]	Cai Houzhi, Long Jinghua, Liu Jinyuan, et al. Picosecond framing camera based on electron pulse time-dilation[J]. Infrared and Laser Engineering, 2016, 45(12):1206001. (in Chinese)
[4]	Benstead J, Moore A S, Ahmed M F, et al. A new streaked soft X-ray imager for the National Ignition Facility[J]. Review of Scientific Instruments, 2016, 87(5):055110.
[5]	Zuber C, Bazzoli S, Brunel P, et al. Picosecond X-ray streak camera dynamic range measurement[J]. Review of Scientific Instruments, 2016, 87(9):093501.
[6]	Wang Qiaoli, Bai Yonglin, Zhu Bingli, et al. A new design of seed source used in optical streak camera[J]. Infrared and Laser Engineering, 2015, 44(7):2122-2126. (in Chinese)
[7]	Gu Li, Zong Fangke, Li Xiang, et al. Designment of a femtosecond streak camera with a novel accelerating structure[J]. Acta Optica Sinica, 2015, 35(11):1134001. (in Chinese)
[8]	Wang Chuanke, Li Jin, Hu Xin, et al. Realization of a flat-response photocathode for X-ray streak cameras[J]. Optics Express, 2015, 23(15):241751.
[9]	Li Jin, Hu Xin, Fan Long, et al. Fabrication and absolute calibration of X-ray streak camera cathode[J]. High Power Laser and Particle Beams, 2015, 27(8):082003. (in Chinese)
[10]	Li Xiang, Gu Li, Zong Fangke, et al. Temporal resolution limit estimation of X-ray streak cameras using a CsI photocathode[J]. Journal of Applied Physics, 2015, 118(8):083105.
[11]	Pu Yudong, Huang Tianxuan, Lei Haile, et al. Direct-drive cryogenic-target implosion experiments on SGⅢ prototype laser facility[J]. Physics of Plasmas, 2015, 22(4):042704.
[12]	Wang Hongjian, Yang Qingguo, Ye Yan, et al. Multi-keV X-ray conversion efficiencies of laser-irradiated nano-velvet Cu targets[J]. Infrared and Laser Engineering, 2016, 45(11):1106008. (in Chinese)

Photocathode detection system of X-ray streak camera for laser fusion

doi: 10.3788/IRLA201847.0817002

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views