問い合わせ番号

INS-0000000348

AREA OF RESEARCH

• X-ray optics, especially coherent X-ray optics

KEYWORDS

• Scientific field
  Coherent X-ray optics
• Equipment
  Optical benches, Precision goniometers and stages, Standard X-ray detectors and electronics

SOURCE AND OPTICS

  The source is a SPring-8 standard in-vacuum undulator. It has 32 mm magnetic period length and 140 periods. The fundamental radiation covers the energy range from 4.9 to 18.7 keV by tuning the gap from 8.8 to 50.0 mm.
  A front-end slit is placed at 28.9 m from the source. The maximum aperture is 1 × 1 mm².
  In the optics hutch there is a SPring-8 standard type monochromator at 43.2 m from the source. The scanning angle ranges from 3 to 27 degree corresponding to the energy range from 37.8 to 4.4 keV with Si 111. Symmetric Si 111 crystals are cooled indirectly by the closed loop liquid nitrogen with three 250 W helium refrigerators.
 A pair of rhodium-coated vertical reflecting mirrors can be used for higher harmonics reduction and for vertical focusing. The upward and downward reflecting mirrors are at 47.35 m and 48.50 m from the source, respectively. They both are 400 mm long.
 A four-jaw slit is placed at the downstream end of the optics hutch. The horizontal and vertical blades of the shutter are placed at 50.295 m and 50.565 m from the source, respectively.
 A fast shutter is also equipped in the optics hutch at 46.635 m from the source. It can be operated in synchronization with an external TTL signal.

• X-rays at sample

  Energy range	In-vacuum undulator (1st order harmonics：5-19 keV, 3rd order harmonics：15-56 keV) silicon monochromator(111 plane)(4.4 ~ 37.8 keV)
  Energy resolution	~ 1.3 × 10-4
  Photon flux	6 × 1013 photon/s (@10 keV)
  Beam size (FWHM)	0.7 (V) × 1.6 (H) mm2 (EH1) 0.8 (V) × 1.9 (H) mm2 (EH2) 1.2 (V) × 2.9 (H) mm2 (EH3) 12 (V) × 28 (H) mm2 (EH4)

Overall view of the beamline

Detail View of the optics hutch

EXPERIMENTAL STATIONS

  EH1 is at 52 m from the source and has a size of 5 (along beam) × 3 (W) × 3.3 (H) m³. EH2 is at 60.2 m and has a size of 10 (along beam) × 4.25 (W) × 4.5 (H) m³. EH3 is at 92 m and has a size of 8 (along beam) × 4 (W) × 3.3 (H) m³. EH4 is at 987 m and has a size of 6 (along beam) × 3 (W) × 3.3 (H) m³. There is no permanently installed equipment in the hutches. At the both experimental stations the following equipments are available.

• Optical benches
  • 2.0 (along beam) × 1.0 (W) m²
  • 1.2 (along beam) × 0.9 (W) m²
• Precision goniometers and stages
• Standard X-ray detectors
  • Diode detectors (APD, PIN)
  • Scintillation counters
  • Ionization chambers, etc.
• Standard electronics
  • NIM Bin, Power supply, Counter/timer, MCA, SCA, Current amp., etc.
  Schematic view of the larger optical bench
  It has six XY-carriers to mount the goniometers and five Y-carriers for detectors and small stages.

PUBLICATION SEARCH

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CONTACT INFORMATION

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

Yoshiki Kohmura
SPring-8 / RIKEN
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)791-58-0802 ext. 3823
Fax : +81-(0)791-58-2807
e-mail : kohmura