An X‐ray harmonic separator for next‐generation synchrotron X‐ray sources and X‐ray free‐electron lasers. (28th February 2018)

• Record Type: Journal Article
• Authors: Inoue, Ichiro; Osaka, Taito; Tamasaku, Kenji; Ohashi, Haruhiko; Yamazaki, Hiroshi; Goto, Shunji; Yabashi, Makina
• Is Part Of: Journal of synchrotron radiation. Volume 25:Part 2(2018)
• Page Start: 346
• Page End: 353
• Publication Date: 2018-02-28
• Subjects: harmonic radiation -- X‐ray free‐electron lasers -- diffraction‐limited storage rings -- harmonic separation -- SACLA; Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S160057751800108X
• Languages: English
• ISSNs: 0909-0495

Abstract

Abstract : A new optical technique used to extract a specific harmonic of undulator radiation is proposed and the concept was experimentally confirmed using X‐ray pulses from SACLA. Abstract : An X‐ray prism for the extraction of a specific harmonic of undulator radiation is proposed. By using the prism in a grazing incidence geometry, the beam axes of fundamental and harmonics of undulator radiation are separated with large angles over 10 µrad, which enables the selection of a specific harmonic with the help of apertures, while keeping a high photon flux. The concept of the harmonic separation was experimentally confirmed using X‐ray beams from the X‐ray free‐electron laser SACLA.