Abstract
A testing system was built, using UV illumination at 254 nm and a cathodoluminescent phosphor screen, to measure the gain uniformity of large area (20 x 20 cm2) microchannel plates. The phosphor screen image is captured with a wide-angle CMOS digital camera (4032 x 3024 pixels) and analyzed. First a reference MCP is illuminated and the generated phosphor screen image is captured with a CCD camera. In a second step, another image is captured with the MCP under test inserted between the reference MCP and the phosphor screen. The ratio of the two images is analyzed and provides a quantitative measure of the relative gain uniformity of the MCP under test.
| Original language | English |
|---|---|
| Article number | P11011 |
| Journal | Journal of Instrumentation |
| Volume | 9 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 1 2014 |
| Externally published | Yes |
Keywords
- Photon detectors for UV
- Secondary electron emitters and dynodes and their production
- Timing detectors
- Visible and IR photons (vacuum) (photomultipliers, HPDs, others)