Plasma-based accelerators driven by either intense lasers1 or charged particle beams2 can accelerate electrons positrons with extremely high gradients compared conventional radio-frequency accelerators. For their use as next-generation light sources and in energy frontier colliders3, beams good stability, quality, controllable polarization excellent reproducibility4,5 are required. The accelera...

In this paper, some new ideas about the dynamic situation of accelerator, dynamic pattern recognition, are briefly introduced. Some important statistical parameters about the situation description, stability evaluation and dynamic analysis of accelerator are presented from the point of a surveyor. A very useful method or procedure used to the motion analysis of the ground and the support system...