• Scintillator: Polycrystalline layer of gadolinium oxysulphide with full range energy response from 5 keV to > 100 keV and 15 mg/cm2 density for optimized response at 5-35 kev X-ray energy. Scintillator applied directly to input face of (micro) fiber-optic coupler for maximum light transfer efficiency. Aluminum foil light exclusion membrane in front of scintillator layer
• Progressive scan interline transfer Kodak KAI-11000 CCD
  4008 x 2672 pixels (9 µm x 9 µm pixels),
  Total CCD noise at 20 MhZ < 30e
  Dark Noise ~3e/pixel/sec
  Integral Electronic shutter - user selectable exposure 1 ms - > 10 minutes
• Dynamic range >10bit (RMS noise in darkness, <1 @10-bit / 20MHz digitization, <4 @ 12-bit / 10 MHz digitization)
• Fiber Optic Input (taper) with direct coherent coupling to CCD sensor for maximum light transfer efficiency
• Integral electronic shutter - a separate external X-ray beam shutter is NOT required.
• Highly flexible mode of operation with user (software) selectable controls for:
  Selectable readout rates of 10MHz @ 12-bit resolution and 20 MHz @ 10-bit resolution. 
  On Chip Binning (independently in X & Y) from 1x1 to 8x8
  Sub-area readout (selectable in both X & Y)
  Selectable CCD gain from X1 to X4 in 100 steps
• Multi-stage thermoelectric CCD cooling plus air secondary cooling, with a typical stabilized deltaT of >35°C, reduces dark current for longer on-chip integration
• Includes camera head with thin Aluminum light exclusion membrane to allow device to be operated in ambient lighting; Control unit including power supply, Interconnecting cables, user manual and flight case.

Introduction
A directly bonded coherent micro fiber-optic coupler transfers the light from an optimized scintillator input to the CCD sensor with maximum efficiency. Careful design throughout the X-Ray XDI camera ensures both maximum contrast and excellent dynamic sensitivity are available to the user.
   With ~10 million pixels the X-Ray XDI-VHR gives amazing resolution, producing images with superb detail, whilst the thermoelectrically cooled sensor allows integration over long periods to produce crisp, clear images from very low X-ray flux intensities. The X-Ray XDI-VHR includes an integrated fast electronic shutter so external shuttering of the X-ray beam is NOT required during image readout.
    With a fast 20 MHz read-out mode, flexible on-chip binning and user definable sub-area readout, the X-Ray FDI is able to produce high frame rate images. This makes "real-time" X-ray digital imaging both possible and practical as a powerful experimental technique.

Performance

• Up to > 1.8 full frames per second with standard fast 20 MHz driver, or greater with binning / sub-area (i.e. approx. 3.75 f·p·s. @ 2 x 2 binning giving effectively 2004 (h) x 1836 (v) pixels 18 micron square)
• Fusion driver with 16-bit image digitisation.
  - Actual dynamic range ˜ 14-bits (RMS noise in darkness ~ 4 ADU @ 16-bit / 20MHz digitisation using highest    quality setting).
  - Gives equivalent sensor full well capacity ~ 250,000 e– per pixel.
  - Faster acquisition lower quality setting gives useful dynamic range
      of ˜ 14-bits (but with increased noise at high intensity values > 3 500 ADUs)
• User selectable video gain over nominal 4:1 range in 100 programmable steps
• Multistage thermoelectric CCD cooling plus air secondary cooling, with a typical stabilised deltaT of >35°C, reduces dark current to allow longer on-chip integration of up to > 10 minutes.
• Resolution: Varies with input size and scintillator layer specification

Drivers, including Fusion driver, for Image Pro Express / Image Pro Plus 4.X (Windows 98, ME, NT4 / 2000 and XP) – Standard
Windows DLLs and PSLink library for end-user driver development – Standard
Drivers, including Fusion driver, for Labview 5.X (Windows ‘98, ME and NT4) – On request