Energy balance and stability analysis of output energy ofpreamplifier system in SG-Ⅲ facility
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摘要: 基于SG-Ⅲ主机装置预放系统，提出一套预放系统能量平衡方案，实现了对预放系统输出能量的精确控制。装置运行实验结果表明，预放系统的能量平衡控制精度达到5.47%。通过对影响预放系统输出能量平衡各项因素的定量分析，指出影响预放系统能量平衡控制精度的主要因素是1 Hz重频能量波动，而提高1 Hz重频能量稳定性的关键在于控制前端系统注入偏振能量波动。Abstract: A energy balance method of preamplifier system (PSA) is given based on the PSA in SG-Ⅲ facility. The preamplifier system has realized precise control of output energy by employing the method. The results of running of the facility show that the control precision of output energy of PSA is 5.47%. Furthermore, the influence factors of output energy fluctuation of PSA are quantitatively analyzed. The analytical results show that the primary influence factor of output energy fluctuation of PSA is the instability of 1 Hz pulse energy, and the key of enhancing the stability of 1 Hz pulse energy is to control the polarized energy fluctuation of the frontend seed.
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Key words:
- ICF laser facility /
- preamplifier system /
- energy balance /
- output energy stability
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