Sanchez Del Rio Manuel, Goldberg Kenneth A, Yashchuk Valeriy V, Lacey Ian, Padmore Howard A
Advanced Light Source, LBNL, Berkeley, CA, USA.
J Synchrotron Radiat. 2021 Jul 1;28(Pt 4):1041-1049. doi: 10.1107/S160057752100401X. Epub 2021 Jun 1.
The diaboloid is a reflecting surface that converts a spherical wave to a cylindrical wave. This complex surface may find application in new Advanced Light Source bending-magnet beamlines or in other beamlines that now use toroidal optics for astigmatic focusing. Here, the numerical implementation of diaboloid mirrors is described, and the benefit of this mirror in beamlines exploiting diffraction-limited storage rings is studied by ray tracing. The use of diaboloids becomes especially interesting for the new low-emittance storage rings because the reduction of aberration becomes essential for such small sources. The validity of the toroidal and other mirror surfaces approximating the diaboloid, and the effect of the mirror magnification, are discussed.
抛物面镜是一种反射面，它能将球面波转换为柱面波。这种复杂的表面可应用于新型先进光源弯铁光束线或其他目前使用环形光学元件进行像散聚焦的光束线中。在此，描述了抛物面镜的数值实现方法，并通过光线追迹研究了这种镜子在利用衍射极限储存环的光束线中的优势。对于新型低发射度储存环而言，抛物面镜的应用尤其具有吸引力，因为对于如此小的光源，像差的减小至关重要。文中还讨论了近似抛物面镜的环形面镜及其他镜面的有效性，以及镜面放大率的影响。
