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Optical Engineering

Thermal-recovery optimization of SG-III prototype
Author(s): Haiwu Yu; Wanguo Zheng; Chengcheng Wang; Shaobo He; Jun Tang; Yong Liu; Yu Yongmei Chun
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Paper Abstract

Thermal recovery of the main amplifier of the SG-III prototype is numerically simulated. The calculations indicate that, with a shot period of 4 h, we can achieve an acceptable laser slab average temperature and thermal gradient across the slab aperture through optimized active cooling for both the flashlamp cassettes and the slab cavities. After 4 h of thermal recovery, the average temperature and the largest temperature drop across the aperture of the laser slab will be less than 0.13°C above ambient and 0.11°C respectively. The active cooling for all the flashlamp cassettes will need a total cleaned-air flow rate of 80 m3/min (10 ft3/min per lamp) and a total nitrogen flow rate of 16 m3/min for all the slab cavities. Additionally, the temperature of the cooling gas in the flashlamp cassette must be reduced to ?1.0°C (relative to ambient temperature) during the first 2.5 h of the thermal recovery cycle.

Paper Details

Date Published: 1 January 2001
PDF: 6 pages
Opt. Eng. 40(1) doi: 10.1117/1.1327502
Published in: Optical Engineering Volume 40, Issue 1
Show Author Affiliations
Haiwu Yu, China Academy of Engineering Physics (China)
Wanguo Zheng, China Academy of Engineering Physics (China)
Chengcheng Wang, China Academy of Engg. Physics (China)
Shaobo He, China Academy of Engg. Physics (China)
Jun Tang, China Academy of Engg. Physics (China)
Yong Liu, China Academy of Engg. Physics (China)
Yu Yongmei Chun, China Academy of Engg. Physics (China)

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