Error analysis on assembly and alignment of laser optical unit

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.

Forward Kinematics Analysis of a Novel 3-DOF Parallel Manipulator

“…SG-III is one of the largest Inertial Con nement Fusion (ICF) facilities in the world, which is a footballstadium-size 48-beam laser constructed to create fusion conditions with controllable laboratory conditions [25]. As shown in Figures 1 and 2, a precision assembly platform is designed to install, adjust, and uninstall a series of diagnostic instruments in the ICF facility, and this assembly platform is mainly made up of three components, namely, the special xture, Having a closed-loop structure, as depicted in Figure 3, the considered 3-SPS/PU manipulator consists of three identical SPS kinematic chains and one PU kinematic chain, all connecting the MP to the base.…”

Assembly Process Optimization Method Based on Maximum Entropy Theory

“…Z Xiong 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 [4] . In addition, the non-uniform stress field caused by non-uniform contact will release energy as time, temperature and mechanical environment change, and the assembly accuracy will change as well.…”