<title>1-km beamline at SPring-8</title>

Abstract

A one-kilometer long synchrotron radiation beamline with an x-ray undulator source was completed at SPring-8. The beamline was planned to facilitate various applications of a wide-area coherent x-ray beam, development of bi-crystal x-ray interferometers for gravitational red-shift measurement and development of highly sensitive diagnostic methods of accelerator dynamics. This paper reports the structure of the long beamline as well as some selected first results including phase contrast imaging and diffraction imaging applications.

Reflective optics for sub-10nm hard X-ray focusing

“…The surface shape is part of an elliptical function in which one focal point is the light source and the other one is the focal point. The mirror was designed for the 1-km-long beamline of SPring-8 10), 11) where the mirror aperture can be coherently illuminated. The incidence angle on the optical axis is 11.1 mrad.…”

Focusing mirror for x-ray free-electron lasers

“…Furthermore, both metrology systems were upgraded for measuring 400-mm-long mirror optics. 24,25 The mirror length was 400 mm and the focal distance was 550 mm. Figure 2 shows a photograph of the one-dimensional focusing test for evaluating the mirror.…”

Wave-optical simulations for designing and evaluating hard x-ray reflective optics

“…1 In particular, undulators in the 3rd-generation facilities emit sharply collimated X-rays, sometimes with less than 10 mrad of vertical divergence .2 Such X-ray beams are finding many applications in coherent imaging techniques that usually demand a spatially homogeneous beam. However, the high spatial coherence, in turn, has given rise to new problems that were never encountered in the previous generation of sources.…”