Flange Mounted Open MCP Image Intensifier is a complete assembly incorporating
Microchannel Plate electron multiplier and a phosphor screen on an optical window,
premounted on a standard vacuum flange.
MCP-GPS34/2-CF6" is an open 2 stage MCP Image Intensifier, with a minimum 25mm
effective diameter, mounted on standard 6" ConFlat flange.
Specifications at nominal operation conditions:
The body of MCP detector is a metal-ceramic housing.
| Imaging area diameter | 25mm minimum, about 28mm typical |
| MCP type | MCP-34-10 |
| Number of MCP | 2 in Chevron assembly |
| MCP channels |
pore: 10mm pitch: 12 mm |
| Electron Gain | 106- 107 typical |
| PHD | FWHM/A<120% |
| Output Window | Glass Phosphor Screen |
| MCP - Screen Spacing | 1.0mm |
| Strip current | <20mA |
| Outside diameter | 45mm |
| Detector height | 11mm |
| Mounting | detector is mounted on standard 6" ConFlat flange |
| Feedthrough type | SHV |
Operation conditions:
| MCP-in | 0V |
| MCP-in - MCP-out | +2000V typical, 2400V maximum |
| MCP-out - Screen | +2500 - + 5000V |
| Packaging | To be delivered fully assembled in dry air or nitrogen atmosphere |
| Pressure 1) |
A system pressure better than 6.5*10-4 Pa (5 * 10-6 torr) is necessary for proper operation. The MCP detector has to be degassed before applying the maximum voltages. |
1)
Because the MCP is operated with a high voltage of about 1 kV per stage, a relatively high degree of vacuum must be required. If the MCP is operated at a deficient vacuum, not only the noise increases due to the ion generation in the channels, but also the lifetime may be shortened and, in the worst case, the MCP may be damaged by discharge. Therefore, it is recommended that the MCP be operated at a degree of vacuum as high as possible. When using a new MCP, it is recommended that before applying a voltage to it, the system be evacuated at a pressure of 6.5 * 10-4 Pa (5 * 10-6 torr) or below for more than 24 hours. If the evacuation time is short or the degree of vacuum is deficient, a discharge may occur.