本文選題：激光驅(qū)動ICF裝置 + 光束定位�。� 參考：《紅外與激光工程》2017年11期

【摘要】：激光驅(qū)動ICF裝置的甚多束激光在打靶過程中需要高精度定位于靶面,這就要求可以改變光束著靶點位置的光學(xué)元件滿足定位誤差指標(biāo)要求。首先介紹光束定位誤差分解方法,在光束對準(zhǔn)過程中和打靶前,在多源激勵作用下能改變光束著靶點位置的光學(xué)元件需要評估其支撐系統(tǒng)的穩(wěn)定性設(shè)計,發(fā)展了光學(xué)元件穩(wěn)定性指標(biāo)分解方法用于其支撐系統(tǒng)的穩(wěn)定性評估。從基頻、環(huán)境隨機(jī)振動、模態(tài)阻尼的角度討論了支撐系統(tǒng)振動穩(wěn)定性設(shè)計思路。光學(xué)元件的通用支撐系統(tǒng)采用大而重的鋼筋混凝土和鋼結(jié)構(gòu)的混合結(jié)構(gòu),鋼筋混凝土保證光學(xué)元件穩(wěn)定性的同時,鋼結(jié)構(gòu)提供結(jié)構(gòu)設(shè)計的靈活性。采用有限元技術(shù)分析光學(xué)元件在寬頻環(huán)境隨機(jī)振動作用下的響應(yīng),評估支撐系統(tǒng)的振動穩(wěn)定性設(shè)計。描述了神光III寬頻環(huán)境隨機(jī)振動和光束定位誤差的測量,測量結(jié)果表明神光III支撐系統(tǒng)滿足設(shè)計要求,該技術(shù)能應(yīng)用于激光驅(qū)動ICF裝置支撐系統(tǒng)的設(shè)計。
[Abstract]:The multi beam laser driven by the laser driven ICF device needs high precision to locate the target in the shooting process. This requires the optical element that can change the position of the target point to meet the requirement of the positioning error. Firstly, the method of the beam positioning error decomposition is introduced. The beam can change the beam under the multi source excitation in the process of the beam alignment and the target. The optical element at the position of the target needs to evaluate the stability design of the supporting system. The stability index decomposition method of the optical element stability is developed to evaluate the stability of the support system. The design idea of the vibration stability of the support system is discussed from the angle of the fundamental frequency, the random vibration of the environment and the modal damping. With the mixed structure of large and heavy reinforced concrete and steel structure, the reinforced concrete ensures the stability of optical elements, while the steel structure provides the flexibility of structural design. The finite element method is used to analyze the response of optical elements under the random vibration of the broadband environment, to evaluate the vibration stability design of the support system, and to describe the III width of the Shen Guang. The measurement results of random vibration and beam positioning error show that the III support system of the divine light meets the design requirements. This technique can be applied to the design of the support system of the laser driven ICF device.

【作者單位】： 中國工程物理研究院總體工程研究所;
【基金】：國家高技術(shù)研究發(fā)展計劃(2007AA804217)
【分類號】：TH744.5

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