ナビゲーション


BL23SU OUTLINE

問い合わせ番号

INS-0000000364

ABSTRACT

  BL23SU is a soft X-ray undulator beamline of Japan Atomic Energy Agency (JAEA) . It has been constructed for a wide variety of scientific research areas, surface chemistry, biophysical spectroscopy and solid state physics. The experimental stations are located at the experimental hall and the RI building.

AREA OF RESEARCH

  • Surface chemistry with supersonic molecular beam
  • Biophysical spectroscopy
  • Photoelectron spectroscopy (activity at RI laboratory)
  • Magnetic circular dichroism (activity at RI laboratory)

KEYWORDS

  • Scientific field
    Surface chemistry, Chemical reaction dynamics, Real-time in-situ photoemission spectroscopy (Station 1)
    DNA damages, Transient radical species, Photon stimulated desorbed ions (Station 2)
    Photoelectron spectroscopy, Strongly-correlated electron system, Uranium compounds (Station 3)
    MCD, XAS, Strongly correlated electron system, Magnetic property (Station 4)

SOURCE AND OPTICS

  • Light source

      A double-array variable undulator, so-called APPLE-2 (advanced planar polarized light emitter) or Sasaki-type which produces both linearly and circularly polarized soft X-rays is used as a light source. ID23 can generate a linearly (horizontal and vertical plane), an elliptically or a circularly polarized radiation by phase shift. The most unique performance of the undulator is the switching of right-circular-polarization(RCP) and left-circular-polarization (LCP) radiation by periodic phase shift of the magnet rows. The highest mechanical switching rate is at the frequency up to 0.5 Hz.

  • Schematic view of beamline and monochromator system

      The main optics is a varied - line - spacing plane grating type (VLSPG) monochromator. This consists of an entrance slit, spherical mirrors, varied-line-spacing plane gratings, an exit slit, a post-focusing mirror, and refocusing toroidal mirrors. The soft X-rays are guided over 120 m from the undulator, crossing the two areas (experimental hall and RI hall).

    Undulator period 120 mm
    Number of periods 16
    Tunable energy range 0.5 ∼ 1.5 keV
    (Circular polarization)
    Brilliance 3 × 1017 ph/s/mrad2/mm2/0.1%b.w.
    at 1 keV (Circular polarization, photon energy)

  • X-rays at sample

    Energy Range 0.35~ 1.8 keV
    Energy resolution E/ΔE > 10000
    Photon flux 1011 ph/s/0.02%b.w.
    Beam size < 0.2 diam.


Fig. 1 The magnetic structure of the APPLE II consists of two pairs of arrays of permanent magnets

    Optics :
    Distance from the source
    Optical element Function
    40 m Cylindrical mirror (Mv) Vertical focusing at the entrance slit
    42.5 m Cylindrical mirror (Mh) Deflection and horizontal focusing
    50 m Entrance slit (S1)  
    60.1 m Spherical mirror (M1, M2)  
    61.91 m Constant deviation monochromator with varied-space plane gratings (VLSPG) Monochromatizarion
    71.91 m Exit slit (S2)  
    73.91 m Cylindrical mirror (M3) Post focus
    114 m Troidal mirror (M4) Refocus

EXPERIMENTAL STATIONS

PUBLICATION SEARCH

* Sorry, Some parts of results are displayed using Japanese characters.

BL23SU PUBLICATION SEARCH

 

CONTACT INFORMATION

Please note that each e-mail address is followed by "@spring8.or.jp."

Shin-ichi FUJIMORI
Japan Atomic Energy Agency, Sector of Nuclear Science Research Materials Sciences Research Center
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)791-58-2604
Fax : +81-(0)-791-58-2620
e-mail : fujimori

Website

http://msrc.jaea.go.jp

最終変更日
カレンダー