X-ray Gemstar
X-ray Intensified camera
The X-ray Gemstar incorporates an ultra low noise image intensifier that enables photon amplification down to single photon detection.
The intensifier, thanks to an intrinsic luminous gain of up to 8,000:1 enables to lift up the signal generated by a single photon right above the read out noise of the cooled CCD sensor. Very low Equivalent Background Illumination down to 10-3 counts per pixel per second is achieved thanks to selection of very low noise intensifiers and digital signal processing.
The camera is available with input area up to 66mm diameter and less than 50 microns pixel size. Extended cooling allows single exposure up to 20 minutes.
Fast read out allows shutterless 100% duty cycle acquisition at up to 13fps for dynamic acquisition / integration of real time experiments.
Synchronization with pulsed X-ray source down to 100ns at 30 KHz repetition rate can be achieved by feeding a TTL triggering pulse to a BNC connector.
Photonic Science Ltd selects premium grade intensifiers, CCD sensors and fibre optic bundles:
- Small pixel size less < 45 microns pixel size at the detector input
- Intensifier gain range up to 8,000 giving photon counting sensitivity
- Very high resolution micro channel plate with up to 55 lp/mm resolution
- Fast decay phosphor screens enabling gated experiments
- Software switcheable 10 and 20MHz scanning frequencies
- Small area sensor with taper input varying 5.6mm up to 66mm diagonal
- Gating time down to 100 ns
- Simultaneous integration / readout enabling 100% duty cycle acquisition
- GdOS polycrystalline or structured CsI scintillators
- Camera link and GigE digital interface
- Low profile electronics
- 1392 (h) x 1040 (v) CCD array
- Input pixel size: available from 5.2 x 5.2; 10.37 x 10.37; 14.4 x 14.4; 28.8 x 28.8 and up to 40.31 x 40.31 microns
- Input size: available from 7.3 x 5.4 mm; 14.4 x 10.8 mm; 20.5 x 14.9 mm; 40.1 x 30 mm and 56.11 x 41.92 mm respectively
- High resolution intensifier with 55 lp/mm resolution
- 11 fps at full resolution @ 20 MHz and 5 fps @ 10 MHz
- Full well capacity: 13,000 electrons in binning 1x1; 22,000 electrons in binning 2x2
- Readout noise: 5-7 electrons @ 10 MHz with interpolation noise reduction
- 12-bit digitisation
- 16-bit extended dynamic range
- GdOS:Tb scintillator for operation from 5-55 keV with minimum feature recognition of 10 lp / mm: typically 12 microns for the smallest input size up to 50 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 imaging
- Small animal imaging
- Small angle X-ray scattering