Abstract
As one of largest optical units used in high-power laser inertial confinement fusion facility, the large-aperture transport mirror’s misalignment error can have a very negative impact on the targeting performance of laser beams. In this article, we have carried out a fundamental analysis on the mounting and misalignment errors of transport mirror. An integrated simulated assembly station is proposed to align the mirror precisely, and the design of transport mirror unit is optimized to satisfy the stringent specifications. Finally, methods that integrated theoretical modeling, numerical simulation, and field experiments are used to evaluate the mirror’s alignment, and the results indicate a more robust and precise alignment performance of new design.
Highlights
Thousands of optical units are used in the large highpower laser facility, SG-III at China Academy of Engineering Physics, a stadium-sized 48 beams laser constructed to create fusion conditions with controllable laboratory conditions.[1]
In each 3.75-kJ laser beam, hundreds of optical units are used as functionindependent subsystems and we usually refer the optics as line-replaceable units (LRUs)—the packages for assembly, transportation, installation, and removal of optics.[2]
To control the errors in required specifications, we have a detailed investigation on the error accumulation process of mirror with theoretical modeling and numerical analysis
Summary
Thousands of optical units are used in the large highpower laser facility, SG-III at China Academy of Engineering Physics, a stadium-sized 48 beams laser constructed to create fusion conditions with controllable laboratory conditions.[1]. The assembly and mounting performance of laser transport mirror LRU in switchyard, one of the largest ICF optics, is studied.
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