| 冷却储存环主环磁铁的准直测量 |
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| 引用本文： | 张宪亮,严高师.冷却储存环主环磁铁的准直测量[J].强激光与粒子束,2005,17(5):0-654. |
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| 作者姓名： | 张宪亮 严高师 |
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| 作者单位： | 1.中国科学院 近代物理研究所, 甘肃 兰州 730000; |
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| 基金项目： | 国家863计划项目资助课题 |
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| 摘 要： | 采用激光跟踪仪及配套带软件Insight对兰州重离子加速器冷却储存环主环磁铁进行了安装和准直。首先建立全局坐标系，用来确定从源体到实验环各子系统的理论原点的位置；而各个子系统又分别以各自的理论原点为基础建立局部坐标系，用来安装定位本系统内的各个元件；对各个子系统中的每一个元件还采用了元件坐标系。准直测量时，先在每块磁铁上焊接8个测量基准；然后对磁铁上的基准进行测量，以确定其在元件坐标系中的位置；再架设激光跟踪仪，测量主环控制网点，恢复主环局部坐标系，根据元件在主环局部坐标系中的位置及理论坐标，计算出相关的变换参数；转入元件坐标系，采用激光跟踪仪及Insight 软件显示实时测量坐标及其与理论值之差，其精度达到0.15 mm。
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| 关 键 词： | 冷却储存环 准直测量 坐标系 激光跟踪仪 |
| 文章编号： | 1001-4322(2005)05-0651-04 |
| 收稿时间： | 2004/10/9 |
| 修稿时间： | 2004年10月9日 |
Fabrication of collimating module and measurement of far field divergence of laser beam of 1550 nm |
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| ZHANG Xian-liang,YAN Gao-shi.Fabrication of collimating module and measurement of far field divergence of laser beam of 1550 nm[J].High Power Laser and Particle Beams,2005,17(5):0-654. |
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| Authors: | ZHANG Xian-liang YAN Gao-shi |
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| Affiliation: | 1.Institute of Modern Physics,Chinese Academy of Sciences,P.O.Box 31,Lanzhou,730000,China;2.Graduate School of the Chinese Academy of Sciences,Beijing 100039,China |
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| Abstract: | Theory analysis of the collimation about Gaussian light beam is described and the designed collimating lens have achieved the technique target in wavefront aberration by intervention measurement. The experimental data are measured by the designed experimental installation system and are processed by Gaussian power distributing curve, the spot size corresponding to half of the maximum light power is measured by the light power meter, which is used to determine the far field divergence angle of laser beam. In the experiment, average of the measured maximal light power is 27.89 nW and average of the spot size difference is 6.33 mm. Therefore, minimal far-field divergence angle of the laser beam is 0.315 mard. The collimation system of the experiment is validated and it can reduce far field divergence angle to the technique target within 0.4 mrad. |
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| Keywords: | Far-field divergence angle Collimating lens Spot radius Wavefront aberration Intervention measurement |
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