Calibration method of profile measurement system for laser ICF capsule

被引：0
|
作者：
Lu M. [1 ]
Ma X. [1 ]
Huang J. [1 ]
Liu Z. [1 ]
Qiu L. [1 ]
机构：
[1] Optical Measurement Center, School of Optics and Photonics, Beijing Institute of Technology, Beijing
来源：
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2021年 / 42卷 / 05期
关键词：
Differential confocal; Least square method; Roundness measurement; System calibration;
D O I：
10.19650/j.cnki.cjsi.J2107425
中图分类号：
学科分类号：
摘要：
Aiming at the problem of traceability and calibration of the laser inertial confinement fusion capsule profile high-precision measurement system, proposes a calibration and traceability method based on the principle of laser differential confocal measurement. Based on the property that the zero-crossing point of the axial response curve of the laser differential confocal capsule measurement system accurately corresponds to the focus point of the measurement system, the method firstly uses the laser differential confocal capsule measurement system to measure the roundness of the standard elliptical blocks calibrated by National Institute of Metrology, China. Secondly, through comparing the roundness measurement value with the roundness metrological value of the standard elliptical blocks, the measurement transfer coefficient of the system is obtained, which is 1.03. Finally, through multiple verification measurement methods, the high-precision calibration of the system is completed. The experiment results show that using the calibrated system to conduct the comparison measurement of the laser fusion target metal capsule, the standard deviation is 37 nm; the measurement repeatability of this calibration method is 17 nm, which lays a solid foundation for the high-precision measurement of the surface profile of the capsule. © 2021, Science Press. All right reserved.
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页码：17 / 24
页数：7
相关论文
共 18 条
  • [1] BETTI R, HURRICANE O A., Corrigendum: inertial-confinement fusion with lasers, Nature Physics, 12, 7, pp. 717-717, (2016)
  • [2] GLENZER S H, MACGOWAN B J, MICHEL P, Et al., Symmetric inertial confinement fusion implosions at ultra-high laser energies, Science, 327, 5970, (2010)
  • [3] KILKENNY J., National ignition facility quarterly report 2014, Technical Report, (2014)
  • [4] SHAH R C, HAINES B M, WYSOCKI F J, Et al., Systematic fuel cavity asymmetries in directly driven inertial confinement fusion implosions, Physical Review Letters, 118, 13, (2017)
  • [5] HAMZA A V, NIKROO A, ALGER E, Et al., Target development for the national ignition campaign, Fusion Science & Technology, 69, 1, pp. 395-406, (2015)
  • [6] NGUYEN A Q L, EDDINGER S A, HUANG H, Et al., Characterization of isolated defects for NIF targets using PSDI with an analysis of shell flipping capability, Fusion Science & Technology, 55, pp. 399-404, (2009)
  • [7] MENG J, ZHAO X S, TANG X, Et al., Surface characterization of ICF capsule by AFM-based profilometer, High Power Laser Science and Engineering, 5, pp. 1-7, (2017)
  • [8] WANG ZW, MA X J, MENG J, Et al., Three-dimensional thickness reconstruction of ICF shells using X-ray tomography, Fusion Engineering and Design, 100, pp. 525-530, (2015)
  • [9] XU X, YAO ZH X, WANG Y, Et al., Laser differential confocal-based high-precision measurement method for the matching clearance of spherical inertial element, Chinese Journal of Scientific Instrument, 40, 4, pp. 1-8, (2019)
  • [10] ANTIPA N A, BAXAMUSA S H, BUICE E S, Et al., Automated ICF capsule characterization using confocal surface profilometry, Fusion Science & Technology, 63, 2, pp. 150-159, (2013)
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