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RIXSCAM – A MULTI-EMCCD LARGE DETECTOR AREA SYSTEM WITH SINGLE PHOTON DETECTION AND SUB-PIXEL RESOLUTION FOR SOFT X-RAY DETECTION
XCAM’s RIXSCam™ family of camera systems, consisting of the original RIXSCam™ and the newly-released RIXSCam™ Mini, combine 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.
All the systems in XCAM’s RIXSCam™ range use the same custom EMCCDs – these are full-frame detectors with 1632x1608 16µm pixels which are back-illuminated with no AR coating to provide an outstanding soft X-ray response.
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 original RIXSCam™, dark current and associated dark current noise also becomes negligible, permitting a range of camera operation modes.
The original RIXSCam™ system allows between one and three of these devices to be closely butted (see table below for models) to provide a greater signal-to-noise ratio. The detector assembly is mounted on a rotatable cold bench which can be adjusted through all angles and locked in position from the outside of the camera, enabling the user to reduce the effective pixel size.
Finally, a centroiding algorithm, developed jointly by the Paul-Scherrer Institute (PSI) 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, with better than 3µm having 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|
For more details please enquire or download the RIXSCam™ product information sheet below or e-mail firstname.lastname@example.org.
Following the huge success of the original RIXSCam system, XCAM have now released the RIXSCam™ Mini – a single-detector system which utilises a Peltier cooler and has a user-defined fixed gamma-angle for the detector. This allows the same spatial resolution as the original RIXSCam™ system (which has a rotatable cold bench to adjust the angle of incidence with the beam in addition to cryogenic cooling) but at a lower cost to the customer. This is particularly beneficial to beamline scientists whose experiments do not require the same high-throughput as those requiring a multi-detector system. The detector mounting has also been designed to enable the detector to eventually be replaced if needed, providing a long-term economical solution for beamline scientists.
For more information please download the RIXSCam™ Mini product sheet using the link below or email email@example.com.