Products Product Groups Particle DetectorsScintillation DetectorsScintillation Coatings on Imaging and Line Sensors

Scintillation Detectors
(Scintillation Coatings on Imaging and Line Sensors)

Generally speaking phosphor coatings are used for the visualisation of energetic photons, Soft X-ray imaging, synchrotron radiation. The phosphor coating is prepared by sedimentation of phosphor grains on a solid state sensor like CCD or CMOS Sensor. Since these sensors are usually not sensitive for a wavelength < 350nm the coating acts as a spectral converter in most cases to green light. Coated solid state sensors are a much less expensive alternative to back thinned sensors if the other advantages of these sensors are not necessary for the application.

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Features

 

Our sedimentation process leads to a very homogeneous layer structure. To guarantee a homogeneous layer structure, at least 3 to 4 layers of phosphor grains are necessary. The minimum average grain size available is 1 µm. The maximum thickness of the phosphor coating is up to ca. 25µm.

The resolution limit RL is defined as the spatial frequency resulting in a modulation transfer function MTF with a value of 3%. RL is measured in linepairs/mm (lp/mm) and can be approximated as RL = 500/D (D as the thickness of the phosphor layer in µm). Up to 80lp/mm are possible.

Applications

 

  • Beam profile analysis
  • Soft X-ray detection
  • UV detection

Configuration parameters

 

  • P43, P46, P47, P11 and other scintillators
  • segmentation of the coating area possible
  • Sensor sizes 100x100mm²
  • coating of line and area CCD/CMOS elements without protection window (Removing of the window is provided as a service)
  • coating thickness up to 25µm

Options

 

Besides the standard configuration we do also take into account application-specific requirements. Thus we invite our customers to provide such information. Confidentiality is of course guaranteed.

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