Platinum CCD:

  • Monolithic 2kX2k CCD coupled to phosphor by 1.78:1 fiber-optic taper
  • Pixel size at CCD= 25um X 25um
  • Active Imaging surface: 84mm X 84mm square.
  • Pixel size at phosphor can be binned under software control to give:
    • 1x1 binned, 2048 x2048 pixels, 44um pixels
    • 2x2 binned, 1024x 1024 pixels, 88um pixels
    • 4x4 binned, 512 x512 pixels, 178um pixels
  • 4 simultaneous on-chip readout channels
  • PSF (point spread function) 100um FWHM
  • Read noise = 23e- at 2.5 MHz readout speed ~ one 1 8keV photon
  • Frame Rates:
    • 1x1 binning: 1fps
    • 2x2 binning: 3fps
    • 4x4 binning: 5 fps
  • Dark Current:
    • .67 counts/sec, 4x4 binned mode, -20C.
    • 0.16 counts/sec, 2x2 binned mode, -20C.
    • 0.04 counts/sec, 1x1 binned mode, -20C.
  • Dynamic Range, 16 bit converter, 22k = full well/ read noise.
  • Phosphor: Gd2O2S2:Tb, 10mg/cm2.