X-ray XDI-VHR
Very High Resolution X-ray camera
The X-ray Imager VHR is a very high-resolution (with 4008 x 2672 and 4872 x 3248 pixels) X-ray digital camera with direct coupled fiber-optic input that protects the sensor against radiation damage.
The camera features a high resolution phosphor screen which allows 20lp/mm resolution without the need of geometric magnification. Fast 20Mhz readout combined with on-chip pixel binning and sub-area readout allows fast shutterless acquisition with continuous sample rotation.
Very low noise electronics allows to cope with very dimmed signals onto large background such as in phase contrast, diffraction enhanced imaging with soft tissues or thin bone sections.
Air and/or water cooling allows long on chip integration when the camera is used with a sub micrometer size X-ray source for nano-CT reconstruction. Thanks to a removable scintillator, the camera can be used with a brighter 160 kV X-ray source whilst maintaining very high resolution without bleeding artifacts.
Unlike other flat CMOS panels, the fibre optic component bonded to the CCD sensor protects the sensor against radiation damage, giving a longer life cycle than any other detector.
Photonic Science Ltd selects premium grade CCD sensors and fibre optic bundles:
- Small pixel size less < 32 microns pixel size at the detector input
- Cooled CCD sensor with 55 degrees C delta T
- 20MHz scanning frequency
- Large area sensor with taper input varying 21.65mm up to 150mm diagonal
- Low readout noise < 15 electrons with noise interpolation reduction
- Very low dark current with less than 0.05 electron per pixel per second
- Gating time from milliseconds to > 30 minutes
- Simultaneous integration / readout enabling 100% duty cycle acquisition
- GdOS polycrystalline or structured CsI scintillators
- On chip binning
- Camera link and GigE digital interface
- Peltier / fan cut off option
- Low profile electronics
- 4008 (h) x 2672 (v) CCD array
- Input pixel size: available from 4.5 x 4.5; 9 x 9 18.7 x 18.7; 26 x 26 and up to 31.18 x 31.18 microns
- Input size: available from 18 x 12 mm; 36 x 24 mm; 75 x 50 mm; 104.13 x 69.42 mm and 124.96 x 83.31 mm respectively
- 1.8 fps at full resolution @ 20 MHz
- 5 fps in binning 4x4 @ 1002 x 668 resolution
- Readout noise: 14-18 electrons @ 20 MHz with interpolation noise reduction
- Full well capacity: 45,000 electrons in binning 1x1
- 90,000 electrons in binning 2x2
- Dark current: < 0.05 electrons / pixel / second
- 12-bit digitisation
- 16-bit extended dynamic range
- GdOS:Tb scintillator for operation from 5-55 keV with minimum feature recognition of 10lp/ mm: typically 12 microns for the smallest input size up to 55 microns for the largest input size.
- CsI:Tl structured scintillator for operation from 30-100 keV
- Camera link / GigE interface
- Synchronisation / control: via TTL pulse
- Microdiffraction
- X-ray imaging
- X-ray micro CT
- Laue imaging
- Protein crystallography at up to 50 keV
- Gisaxs
- Powder diffraction
- Non destructive testing
- Phase contrast cmaging
- Small animal imaging