The detector is a glass-to-metal vacuum unit coated with an electrically insulating composition.
The assembly includes a 0.15 mm thick beryllium foil input window, a chevron stack of two MCPs (enabling operation in single photon counting mode), a CsI photocathode applied to the input surface of the first MCP, a yellow-green light emitting screen on a glass disk, and a getter. Vacuum X-ray detector is intended for the detection, amplification and imaging in soft X-ray range. It can be used in X-ray spectrometry and microscopy.
Specification
Schematic diagram
Basic technical characteristics
| Parameter, unit | Value |
|---|---|
| Photocathode active area diameter, mm | 18 |
| Gain at MCP voltage 2200 V max | 106, min |
| Dark count rate density, sec-1cm-2 | 10, max |
| Minimum energy of the detected X-ray photons, keV | 1.5* |