The X-Ray Imager VHR is a very
high-resolution (4008x2672 pixel) X-ray digital camera with direct
coupled (micro) fibre-optic input and deeply cooled CCD.
For technical specification —
see Acrobat file
The camera features a high Quantum Efficiency (typically
45% @ 550nm), cooled CCD sensor with typical DT
of > 35°C, a range of input taper sizes, fast 20Mhz readout speed,
on-chip pixel binning, sub-area readout and up to 4008 x 2672 pixel resolution
at up to 12-bit digitisation (fast readout) or up to 16-bit digitisation
with Fusion driver.
16 bit acquisition / 14 bit fast scan mode
Very high antiblooming, shutterless operation
High sensitivity without binning
Large area with Very High Resolution
Simple integration within existing hardware
A directly bonded coherent micro fibre-optic coupler transfers the light from
an optimised scintillator input to the CCD sensor with maximum efficiency. Careful
design throughout the X-Ray Imager-VHR camera ensures both maximum contrast
and excellent dynamic sensitivity are available to the user.
Photonic Science 11 and 22 Megapixel VHR systems introduce a technological
breakthrough in the way of acquiring dynamic diffraction patterns at high resolution.
The
camera delivers better sensitivity than other CCD systems when short duty cycles
are required, as it allows simultaneous exposure / read out cycle, whereas
other systems are limited by dead read out time periods.
The camera provides > 100 times antiblooming suppression as compared to
2 times traditionally thus avoiding bleeding artefacts that are currently affecting
other CCD systems when high intensity peaks are neighbouring very low intensity
ones.
The camera also eliminates the need of an external mechanical shutter, which
means that it does not suffer from the frame shift smear that is currently
corrupting data quality of traditional full frame sensor based cameras during
fast acquisition sequences.
The camera delivers genuine 16 bit dynamic range data without the need of
binning, thus solving the current dilemma between dynamic range and resolution.
Its outstanding Point Spread Function across its entire sensitive area (150
and 200 mm diameter) makes the camera performance comparable to that of larger
CCD cameras with poorer resolution set at a larger distance from the sample.
Its very low noise operation also allows traditional long exposures for weakly
diffracting proteins, small molecules, powders, organic and inorganic materials.
The camera can be integrated within any existing diffraction set up as simply
as one would replace a mechanical shutter, by providing a simple Low Voltage
TTL pulse for setting exposure time. Further integration on Linux or Windows
platforms can be achieved by providing a comprehensive Software Development
Kit and Application Programmer's Interface.
Mosaic design, vacuum compatible camera head with Fibre optic digital data
transmission make the VHR the system of choice for your laboratory and / or
synchrotron most demanding experiments.
Options
X–Ray Imager-VHR 1:1 camera system with straight (micro) Fibre-Optic coupling
Active input area of 36(h) x 24(v) mm imaged on the sensor
Optical pixel resolution at the input of 9 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 5 mg/cm2 — optimised for
resolution with x-ray energies of 5–35 Kev
Input taper ratio of 1:1 (Straight)
X–Ray Imager-VHR 1:3 camera system with 14.5mm input (micro) Fibre-Optic taper
Active input area of 12.0(h) x 8.0(v) mm imaged on the sensor
Optical pixel resolution at the input of 3 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 1.5 mg/cm2 — optimised for
resolution with x-ray energies of 5–35 Kev.
Input taper ratio of 1:3 (Magnifying)
X–Ray Imager-VHR 60 camera system with 60mm input (micro) Fibre-Optic taper
Active input area of 49.9(h) x 33.2(v) mm imaged on the sensor
Optical pixel resolution at the input of 12.5 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 5 mg/cm2 — optimised
for resolution with x-ray energies of 5–35 Kev.
Input taper ratio of 1.38:1 (De-magnifying)
X–Ray Imager-VHR 75 camera system with 75mm input (micro)
Fibre-Optic taper
Active input area of 62.4(h) x 41.6(v) mm imaged on the sensor
Optical pixel resolution at the input of 15.6 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 5 mg/cm2 — optimised
for resolution with x-ray energies of 5–35 Kev.
Input taper ratio of 1.73:1 (De-magnifying)
X–Ray Imager-VHR 90 camera system with 90mm input (micro) Fibre-Optic taper
Active input area of 74.9(h) x 49.9(v) mm imaged on the sensor
Optical pixel resolution at the input of 18.7 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 7.5 mg/cm2 — optimised for
resolution with x-ray energies of 5–35 Kev.
Input taper ratio of 2.08:1 (De-magnifying)
X–Ray Imager-VHR 115 camera system with 115mm input (micro) Fibre-Optic taper
Active input area of 95.7(h) x 63.8(v) mm imaged on the sensor
Optical pixel resolution at the input of 23.9 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 10 mg/cm2 — optimised for
resolution with x-ray energies of 5–35 Kev.
Input taper ratio of 2.65:1 (De-magnifying)
X–Ray Imager-VHR 135 camera system with 135mm input (micro) Fibre-Optic taper
Active input area of 112.3(h) x 74.9(v) mm imaged on the sensor
Optical pixel resolution at the input of 28.1 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 10 mg/cm2 — optimised for
resolution with x-ray energies of 5–35 Kev.
Input taper ratio of 3.11:1 (De-magnifying)
X–Ray Imager-VHR 150 camera system with 150mm input (micro) Fibre-Optic taper
Active input area of 124.8(h) x 83.2(v) mm imaged on the sensor
Optical pixel resolution at the input of 31.2 micron (no binning)
Gadolinium oxysulphide scintillator layer density of 15 mg/cm2 — optimised for
resolution with x-ray energies of 5–35 Kev.
Input taper ratio of 3.46:1 (De-magnifying)
Vacuum Option
Customer-specific, complete in-vacuum design or
in-vacuum scintillator
