X-ray optics—Science—Trend and trial towards a fourth-generation light source started from the PF 2.5 GeV Ring and through the TRISTAN 6.5 GeV accumulation ring and the 10 GeV main ring (invited)

Abstract

A few kinds of x-ray optics together with x-ray sciences developed at the Photon Factory ring and the Tristan accumulation ring are described. As an extension a description is also given about a feasibility study under preparation for using the 5 nm rad synchrotron radiation from a 120 pole undulator at the Tristan main ring. This activity, if achieved, will function as a bridge between a third- and a fourth-generation light source because a few of these experiments in planning are considerably related to the coherent nature of fourth-generation light in the x-ray domain, so that a perspective view on that will be available.