| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5492698 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2017 | 15 Pages |
Abstract
The gravitational sag of aspheric bent mirrors with face-up or face-down geometry produces a nonnegligible optical error. As an effective compensation, width optimization is used to match the combined effects of the gravitational and bending moments. This method is described by analytical expressions and two calculation algorithms. The results of theoretical simulations and finite element analysis have proved that this method can reduce the slope error resulting from gravitational sag to the level of nano radians.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Chengwen Mao, Hui Jiang, Yan He, Dongxu Liang, Xuying Lan, Shuai Yan, De-ming Shu, Aiguo Li,