1. X-ray optics simulation and beamline design for the APS upgrade
- Author
-
Dean R. Haeffner, Xianbo Shi, Ruben Reininger, and Ross Harder
- Subjects
0301 basic medicine ,030103 biophysics ,Brightness ,Computer science ,business.industry ,X-ray optics ,Advanced Photon Source ,Ranging ,01 natural sciences ,010309 optics ,03 medical and health sciences ,Cardinal point ,Upgrade ,Optics ,Beamline ,0103 physical sciences ,Zoom ,business - Abstract
The upgrade of the Advanced Photon Source (APS) to a Multi-Bend Achromat (MBA) will increase the brightness of the APS by between two and three orders of magnitude. The APS upgrade (APS-U) project includes a list of feature beamlines that will take full advantage of the new machine. Many of the existing beamlines will be also upgraded to profit from this significant machine enhancement. Optics simulations are essential in the design and optimization of these new and existing beamlines. In this contribution, the simulation tools used and developed at APS, ranging from analytical to numerical methods, are summarized. Three general optical layouts are compared in terms of their coherence control and focusing capabilities. The concept of zoom optics, where two sets of focusing elements (e.g., CRLs and KB mirrors) are used to provide variable beam sizes at a fixed focal plane, is optimized analytically. The effects of figure errors on the vertical spot size and on the local coherence along the vertical direction of the optimized design are investigated.
- Published
- 2017