Open AccessOptics for coherent X‐ray applications
Author(s) -
Yabashi Makina,
Tono Kensuke,
Mimura Hidekazu,
Matsuyama Satoshi,
Yamauchi Kazuto,
Tanaka Takashi,
Tanaka Hitoshi,
Tamasaku Kenji,
Ohashi Haruhiko,
Goto Shunji,
Ishikawa Tetsuya
Publication year - 2014
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577514016415
Subject(s) - optics , metrology , x ray optics , diamond turning , beamline , diffraction , wavefront , physics , monochromator , strehl ratio , speckle pattern , physical optics , machining , beam (structure) , materials science , x ray , wavelength , metallurgy
Developments of X‐ray optics for full utilization of diffraction‐limited storage rings (DLSRs) are presented. The expected performance of DLSRs is introduced using the design parameters of SPring‐8 II. To develop optical elements applicable to manipulation of coherent X‐rays, advanced technologies on precise processing and metrology were invented. With propagation‐based coherent X‐rays at the 1 km beamline of SPring‐8, a beryllium window fabricated with the physical‐vapour‐deposition method was found to have ideal speckle‐free properties. The elastic emission machining method was utilized for developing reflective mirrors without distortion of the wavefronts. The method was further applied to production of diffraction‐limited focusing mirrors generating the smallest spot size in the sub‐10 nm regime. To enable production of ultra‐intense nanobeams at DLSRs, a low‐vibration cooling system for a high‐heat‐load monochromator and advanced diagnostic systems to characterize X‐ray beam properties precisely were developed. Finally, new experimental schemes for combinative nano‐analysis and spectroscopy realised with novel X‐ray optics are discussed.