A precision assembly method for an eight-channel Kirkpatrick-Baez microscope

Abstract

The invention relates to a precision assembly method of an eight-channel Kirkpatrick-Baez microscope. The precision assembly method is characterized in that every two reflective mirrors which are reversely and symmetrically arranged form a mirror pair, each mirror pair is respectively designed with particular mirror distance and mirror included angle, the positions of optimum view fields of channels are coincided, and an image point interval meets the microstrip interval of a multi-frame camera; after X-ray imaging experiment, the position coinciding of the optimum view fields is realized, and each image point is controlled within the microstrip range of the multi-frame camera; finally, the three pairs of adjusted reflective mirrors are bonded and cured into one set of eight-channel KB lens. Compared with the prior art, the precision assembly method has the advantages that the stricter requirement on optical components in the assembly process of the existing multi-channel KB lens is avoided, the problem of error causing in the existing indirect assembly type is solved, and the final assembly accuracy is high.

Description

technical field [0001] The invention relates to an assembly method of an X-ray optical system, in particular to a precision assembly method of an eight-channel Kirkpatrick-Baez (KB) microscope. Background technique [0002] Time-framing X-ray imaging is an important diagnostic method in the research of high energy density physics (HEDP) and inertial confinement fusion (ICF). Through multi-channel X-ray imaging optical system and time-resolved framing camera, The evolution behavior of the plasma at different moments in the two-dimensional direction can be given, and each imaging channel corresponds to the transient information of the plasma at a certain moment. The development of a multi-channel, high-resolution X-ray optical system is of great significance for obtaining a more detailed evolution process of the plasma in space and time. KB microscope is the key equipment for 2-5μm high spatial resolution imaging diagnosis in inertial confinement fusion (ICF) research. At pr...

AI Technical Summary

Problems solved by technology

The above method has the following problems: 1. The optical cold processing precision of the KB reflector is high, not only the working reflective surface needs to have high surface accuracy and surface roughness to ensure the spatial resolution and reflection efficiency, but also must be used as the assembly reference The relative distance and angle accuracy between the side or back of the mirror and the working reflection surface

However, in the process of splicing and assembling multiple KB mirrors according to a certain configuration, the newly introduced error when the multiple mirrors lean against and touch each other is much higher than the processing error of a single KB mirror, so the actual KB microscope The assembly accuracy is far from reaching the nominal accuracy

In addition, the assembled KB microscope as an objective lens no longer has an adjustable amount as a whole, and the errors introduced by the assembly process cannot be corrected and calibrated

3. There is a deviation between the radius of curvature of the KB mirror that is actually processed and the design value. This deviation causes the actual best field of view position of the KB microscope to deviate from the nominal position, which cannot be corrected during the above-mentioned objective lens assembly process.

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