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Specialists in large area and multiple CCD systems

XCAM is the only company worldwide to offer a complete imaging sensor camera solution:

  • Selection of best sensor or specify custom sensor for manufacture
  • Mechanical, thermal, electronic, software design of camera system
  • Manufacture, test and characterisation of system
  • On-site commissioning, training and support
  • Technically challenging and complex CCD, L3CCD, SCD systems
  • Detector expertise and know-how

Imaging your Imagination

Non-imaging X-ray Spectroscopy with a Swept Charge Device

Swept Charge Devices (SCDs), such as e2v technologies CCD54 and C1XS devices with four CCD54 detectors in on one ceramic package (shown in the images below), offer a low cost, large area, fast read-out alternative to the CCD, for situations where spatial information is not required. These devices are designed to operate at temperatures that can be achieved using Peltier cooling, so that liquid nitrogen is not required, making them a good replacement for the Si(Li), PIN and SDD devices.


Some of the features of SCDs include:

  • Low cost
  • Efficient detection over the 0.5-10 keV band
  • Large area, up to 400 mm2
  • Typically ~5 electrons r.m.s. noise, giving 80 eV FWHM at 1 keV and 130 eV FWHM at 6 keV
  • Peak to background ratio of 4000:1 with collimation
  • Suitable replacement for Si(Li), PIN and SDD devices
  • Can be operated warm requiring no liquid Nitrogen for cooling
  • Fast read-out

The figure below shows a spectrum obtained from Vanadium using an SCD, showing the good peak to background of in excess of 3000:1 (without collimation) that can be achieved.