Experimental study on online cleanliness of the 400 mm aperture 4×2 combined slab amplifier

Wu Wenlong; Liu Yong; Qiang Yongfa; Wang Zhenguo; Xiong Qian; Li Ke; Liu Jianguo; Wang Lin; Lin Donghui; Chen lin; Miao Xinxiang; Yao Ke

doi:10.11884/HPLPB202335.220358

Volume 35 Issue 6

May 2023

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Wu Wenlong, Liu Yong, Qiang Yongfa, et al. Experimental study on online cleanliness of the 400 mm aperture 4×2 combined slab amplifier[J]. High Power Laser and Particle Beams, 2023, 35: 062002. doi: 10.11884/HPLPB202335.220358

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Wu Wenlong, Liu Yong, Qiang Yongfa, et al. Experimental study on online cleanliness of the 400 mm aperture 4×2 combined slab amplifier[J]. High Power Laser and Particle Beams, 2023, 35: 062002. doi: 10.11884/HPLPB202335.220358

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Experimental study on online cleanliness of the 400 mm aperture 4×2 combined slab amplifier

doi: 10.11884/HPLPB202335.220358

Laser Fusion Research Center, CAEP, Mianyang 621900, China

Received Date: 2022-10-25
Accepted Date: 2023-01-13
Rev Recd Date: 2023-02-21

Available Online: 2023-03-02

Publish Date: 2023-05-06

Abstract

Abstract

In the discharge pumping process of xenon lamp, there is a significant pyrolysis process of the materials in the cavity of the slab amplifier under the irradiation of high intensity xenon light, which produces a large number of micron sized suspended particles. For the online cleanliness control of the amplifier, a series of effective measures were taken, including the selection of materials conducive to the cleanliness control, elimination of blind holes and welds, deep pickling and etching, high-pressure spray cleaning and final light cleaning. The experimental results show that after 100 times of light cleaning, the aerosol particles in the chamber are between 300 and 1000, which is close to the cleanliness level of the American National Ignition Facility (NIF) Project; After the operation of the generator is completed, the amplifier chamber is purged with a mixture of nitrogen and oxygen of about 0.4 m/s, and the aerosol particles can recover to zero within 2 minutes.
- slab amplifier,
- cleanliness,
- aerosol,
- optical surface damage

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References(12)

References

[1]	Spaeth M L, Manes K R, Bowers M, et al. National Ignition Facility laser system performance[J]. Fusion Science and Technology, 2016, 69(1): 366-394. doi: 10.13182/FST15-136
[2]	Spaeth M L, Manes K R, Kalantar D H, et al. Description of the NIF laser[J]. Fusion Science and Technology, 2016, 69(1): 25-145. doi: 10.13182/FST15-144
[3]	Haynam C A, Wegner P J, Auerbach J M, et al. National Ignition Facility laser performance status[J]. Applied Optics, 2007, 46(16): 3276-3303. doi: 10.1364/AO.46.003276
[4]	Horvath J A. NIF/LMJ prototype amplifier mechanical design[R]. UCRL-JC-124520, 1996.
[5]	He X T, Zhang W Y. Inertial fusion research in China[J]. The European Physical Journal D, 2007, 44(2): 227-231. doi: 10.1140/epjd/e2007-00005-1
[6]	Honig J. Cleanliness improvements of National Ignition Facility amplifiers as compared to previous large-scale lasers[J]. Optical Engineering, 2004, 43(12): 2904-2911. doi: 10.1117/1.1815320
[7]	Honig J. Offline slab damage experiments comparing air and nitrogen purge[R]. NIF-0070328, 2001: 22-29.
[8]	Honig J, Ravizza D. Nova retrospective and possible implications for NIF[R]. NIF-0110227, 1999.
[9]	Spaeth M L, Manes K R, Honig J. Cleanliness for the NIF 1ω laser amplifiers[J]. Fusion Science and Technology, 2016, 69(1): 250-264. doi: 10.13182/FST14-861
[10]	於海武, 郑万国, 唐军, 等. 高功率激光放大器片腔洁净度实验研究[J]. 强激光与粒子束, 2001, 13(3):272-276 Yu Haiwu, Zheng Wanguo, Tang Jun, et al. Investigation of slab cavity cleanliness of high power laser amplifiers[J]. High Power Laser and Particle Beams, 2001, 13(3): 272-276
[11]	程晓锋, 苗心向, 陈远斌, 等. 神光-III主机激光装置片状放大器洁净控制进展[J]. 强激光与粒子束, 2012, 24(1):1-2 Cheng Xiaofeng, Miao Xinxiang, Chen Yuanbin, et al. Development on cleanliness control of slab amplifiers for Shenguang-III laser driver[J]. High Power Laser and Particle Beams, 2012, 24(1): 1-2
[12]	程晓锋, 王洪彬, 苗心向, 等. 高功率固体激光驱动器污染控制及片状放大器洁净度改进[J]. 强激光与粒子束, 2013, 25(5):1147-1151 doi: 10.3788/HPLPB20132505.1147 Cheng Xiaofeng, Wang Hongbin, Miao Xinxiang, et al. Contamination control for high-power solid-state laser driver and improvement of cleanliness in slab amplifiers[J]. High Power Laser and Particle Beams, 2013, 25(5): 1147-1151 doi: 10.3788/HPLPB20132505.1147