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Setup Characteristics


  • Guide:
    		•    NG-7 (Ni coated)
  • Interferometers:
    		•  Perfect Crystal Silicon
  • Contrast:
    		• ~ 90% (2.71 Å)
  • Phase Stability:
    		• ± 0.25°/day (ideal condition)
  • Monochromator:
    		• PG (002), parallel double crystal
  • Wavelength:
    		• 2.0 Å to 4.75 Å
  • Beam Intensity:
    		• 2 · 105 n/(cm2 · s) (at the interferometer)
  • Beam size:
    		• 2 mm × 8 mm (nominal)
  • Detectors:
    		• 3He (black) and CCD type PSD
  • Detector count:
    		• ~ 210 n/(cm2 ·  s) (O+H beams)
  • Vibration:
    		• < 10-7 g
  • Stability:
    		• < 1 µm (linear), < 0.1 µrad (rotation)
  • Temperature:
    		• ± 0.1° C variation/day (nominal)
  • Polarizer:
    		• Super mirror transmission type
  • Polarization:
    		• > 98% (4 Å)

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      Online: November 1998