A novel testing method of beam pointing accuracy for high-power laser facility

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-04-02 DOI:10.1016/j.net.2025.103595

Xiaolu Zhang, Lu Zhang, Song Gao, Huaiwen Guo, Jun Zhang, Junpu Zhao, Pin Yang, Longfei Jing, Ping Li, Wei Zhou

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引用次数: 0

Abstract

Pointing shots are typically used to test the beam pointing accuracy of high-power laser facilities. This paper proposes a new method for measuring pointing accuracy by utilizing visible light generated during the low-energy laser interaction with a test target. The center position of the visible-light spot accurately represents the actual laser spot position. Additionally, an aluminum planar target with grid lines on its surface is designed to enhance precision. This method not only reduces errors and uncertainties in pointing measurements but also improves the efficiency of pointing shots. Successful implementation on a laser facility demonstrates significant improvements in data processing accuracy, pointing deviation stability, and operational efficiency. After correcting the measured beam pointing deviations, the facility achieves a final pointing accuracy of ∼20 μm, surpassing the required 30 μm specification.

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一种大功率激光设备光束指向精度测试新方法

瞄准射击通常用于测试高功率激光设备的光束指向精度。本文提出了一种利用低能激光与测试目标相互作用时产生的可见光测量指向精度的新方法。可见光斑的中心位置准确地代表了实际的激光光斑位置。此外，还设计了一种表面带有网格线的铝平面靶，以提高精度。该方法不仅减少了指向测量中的误差和不确定度，而且提高了指向射击的效率。在激光设备上的成功实施证明了数据处理精度、指向偏差稳定性和操作效率的显著提高。在校正测量光束指向偏差后，该设备达到了20 μm的最终指向精度，超过了所需的30 μm规格。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development