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Novel ICF (initial confinement fusion) pellet detection device and positioning method

A positioning method and a new device technology, which are applied in the direction of measuring devices, optical devices, phase influence characteristic measurement, etc., to achieve the effects of improving extraction speed and accuracy, simplifying experimental adjustment steps, and reducing the size of the device

Active Publication Date: 2018-07-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

However, for most target pellet detection systems, it is necessary to place the target pellet in a cylindrical channel, and the cross-type system device is no longer applicable

Method used

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  • Novel ICF (initial confinement fusion) pellet detection device and positioning method
  • Novel ICF (initial confinement fusion) pellet detection device and positioning method
  • Novel ICF (initial confinement fusion) pellet detection device and positioning method

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with drawings and embodiments.

[0050] Such as figure 1 As shown, a new device for detecting ICF target pellets, including a laser 1, a beam expander 2, a first beam splitter 3, a plane mirror 4, a second beam splitter 5, a third beam splitter 6, and a Target ball 7, lens 8, CCD image sensor 9, high power LED (light emitting diode) 10, aperture 11, computer 12. The laser 1, the beam expander 2, the first beam splitter 3, and the plane mirror 4 are sequentially placed along the same horizontal line, the light outlet of the laser 1 is aligned with the light entrance of the beam expander 2, and the beam expander 2 The light exit is aligned with the light entrance of the first beam splitter 3 , and the light exit of the first beam splitter 3 is set at 45° to the plane reflector 4 . Arrange high-power LED (light emitting diode) 10, diaphragm 11, third beam splitter 6, target pill 7 to be measured, secon...

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Abstract

The invention relates to a novel ICF (initial confinement fusion) pellet detection device and a positioning method. The device comprises a laser, a beam expander, a first bean splitter, a second beamsplitter, a third beam splitter, a plane mirror, a to-be-detected pellet, a lens, a CCD image sensor, a computer, a high-power LED and a diaphragm. The pellet is moved at the internal of 10 mu m, a backlight projection image in each position is collected, image preprocessing work such as filtering and aperture extraction is performed, the acutance of an area near a bright ring is calculated, and the position with the largest acutance meets the object-image conjugate relation. The pellet is moved in the interval of 10 mu m at the interval of 1 mu m continuously after being moved to the position. The steps of collection, image preprocessing and acutance calculation are repeated, the pellet is moved to the new position with the largest acutance, and positioning is finished. The novel pellet detection device and the positioning method are applicable to conventional cylindrical vacuum space and can realize automatic positioning quickly and accurately.

Description

technical field [0001] The invention belongs to the technical field of optical precision measurement, and relates to a new detection device and a positioning method of an ICF target pellet. Background technique [0002] Inertial confinement fusion (ICF) is one of the mainstream schemes to realize controllable nuclear fusion, and it is of great significance in nuclear fusion research. As the core of all N laser beams converged and imploded to induce nuclear fusion, the target pellet has extremely stringent requirements on the smoothness, concentricity and uniformity of its inner surface. For this reason, it is very important to implement quality control on it. [0003] According to the principle of measurement, there are various detection devices for the refractive index and thickness of the ice layer of the target pellet. The Lawrence Livermore Laboratory of the United States uses the interferometric measurement of laser fusion targets (Interferometric measurement of laser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45G01B11/06
CPCG01B11/06G01N21/45
Inventor 刘东严天亮臧仲明周宇豪
Owner ZHEJIANG UNIV
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