Camera Systems

Listed in this section are the most commonly supplied systems. However, XCAM specialises in using its wide library of subassemblies to create variants on previously supplied systems, so if you would like one of these systems building with a different detector or mechanical camera head, for example, please enquire.

RIXSCAM – A MULTI-EMCCD LARGE DETECTOR AREA SYSTEM WITH SINGLE PHOTON DETECTION AND SUB-PIXEL RESOLUTION FOR SOFT X-RAY DETECTION

In this new range of camera systems, XCAM combines the single-photon detection capabilities of custom EMCCDs with licensed centroiding technology to deliver sub-pixel resolution for RIXS (Resonant Inelastic X-ray Scattering) applications.

EMCCDs provide single-photon detection with sub-electron read noise. When cryogenically cooled down to temperatures in the range of -110 to -50 ˚C as in the RIXSCam, dark current and associated dark current noise also becomes negligible, permitting a range of camera operation modes. In XCAM’s RIXSCam system, custom EMCCDs are used which are full-frame devices with 1632x1608 16µm pixels; these are back-illuminated and have no AR coating to provide an outstanding soft X-ray response. One to three of these devices are closely butted to provide a greater signal-to-noise ratio.

The detector assembly is mounted on a tiltable stage which can be adjusted through all angles from the outside of the camera, and locked in position. This enables the user to reduce the effective size of the pixels.

Finally, a centroiding algorithm, developed jointly by the Paul-Scherrer Institute and the Open University, is applied to the resulting image, providing at output a ‘super-resolution’ image of up to 10 times the original resolution. This provides a resolution of better than 5µm and better than 3µm has been demonstrated during experimental phases. The ultimate resolution achievable depends on the local experimental set-up as well as the camera system.

Model Imaging Pixels per Detector Pixel Size (µm2) Number of Detectors
RIXSCam3 1632 x 1608 16 x 16 3
RIXSCam2 " " 2
RIXSCam1 " " 1

For more details please enquire or download the RIXSCam product information sheet below.

CAVACAM (F) – CAMERA FOR VACUUM APPLICATIONS ON A CONFLAT FLANGE

CaVACam is XCAM’s Camera for Vacuum Applications, developed in response to many enquiries for vacuum ‘clean’ camera systems. The F-model CaVACams are cameras which are essentially built on to a conflat flange and which have entirely ‘vacuum clean’ parts inside the vacuum chamber and the ‘dirty’ electronics and non-vacuum components on the airside of the flange. This camera system is ideal where a conflat flange design suits your application and you do not need to immerse the camera head inside the vacuum chamber.

Whilst we maintain a ‘standard’ build configuration for these camera systems, they are very easily adapted to meet your specific material requirements or even to take different detectors if required, due to the modular design. RGA scan of the camera head can be conducted if required.

Detectors are available in front-illuminated (FI) or back-illuminated (BI) options and BI may be available with no AR coating for good soft x-ray performance – all dependent on availability and MOQ from supplier. Please enquire if the camera configuration you require is not in the list below.

CAVACAM (S) – CAMERA FOR VACUUM APPLICATIONS FULLY VACUUM IMMERSIBLE

CaVACam is XCAM’s Camera for Vacuum Applications, developed in response to many enquiries for vacuum ‘clean’ camera systems. The S model CaVACams are cameras in which the ‘vacuum clean’ parts including the detector are built on the outside of a hermetically sealed camera head, and the non-vacuum components are enclosed inside the sealed chamber. Data is removed from the camera head via clean vacuum fibre optic cables and a single power cable is designed to be vacuum compatible. This camera head is ideal where you need to fully immerse the camera head inside the vacuum chamber and cannot use an F-model CaVACam.

Whilst we maintain a ‘standard’ build configuration for these camera systems, they are very easily adapted to meet your specific material requirements or even to take different detectors if required, due to the modular design. RGA scan of the camera head can be conducted if required.

Detectors are available in front-illuminated (FI) or back-illuminated (BI) options and BI may be available with no AR coating for good soft x-ray performance – all dependent on availability and MOQ from supplier.

Please enquire for more details.

HIGH SPEED PX2 EMCCD CAMERA SYSTEM

The XCAM very high speed, low noise EMCCD system has the following key features:

  • Extremely high speed operation: CCD97 up to 15 MHz, and CCD201 up to 25 MHz High speed means faster frame rates for both full frame and when reading out sub arrays: for example the CCD 97 can readout 552 x 132 pixels at about 160 Hz without any binning
  • By using focal plane masks even faster frame rates are possible; e.g. 110 x 132 @ 800 Hz
  • Extremely Low Clock-induced Charge due to our Unique Analysis System Background
  • Use with gains of up to 4000 or gain turned off for normal CCD operation
  • Optical Photon-Counting
  • Systems are individually optimised for specific CCD for best performance
  • Systems available cryogenically cooled for optical, or for vacuum operation for X-ray

XCAM specialises in custom systems; this high speed electronics can be built into a system to suit your experiment. For further details, please contact us for information specific to your application.

The following table shows some L3 CCDs available which can be operated by this drive system. E2v technologies devices offer higher responsivities than Texas Instrument devices, whilst the Texas Instrument devices offer higher speeds of operation.

CCD Number of Pixels Pixel Size Image Area Speed of Operation
CCD60 128 x 128 24 µm 3.072 x 3.072 mm  
CCD97 Frame Transfer 512 x 512 16 µm 8.192 x 8.192 mm 15 MHz
CCD201 Frame Transfer 1024 x 1024 13 µm 13.3 x 13.3 mm 25 MHz
CCD207-001 Full Frame 1632 x 208 16 µm 26.11 x 3.33 mm 15 MHz
CCD207-101 1632 x 408 16 µm 26.11 x 6.53 mm 15 MHz

Notes 1
All CCDs and specific coatings are subject to availability from e2v technologies, and non-stock or non-standard items may be subject to MOQs or additional cost; please enquire if you have a specific requirement.

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