Photomultiplier tube Topaz MCP-PMT is designed for the detection and amplification of visible light in 300-650 nm wavelength range and enables operation in photon counting mode.
Structurally, Topaz MCP-PMT is a metal-glass vacuum unit with an insulating coating, containing a bialkali antimony-potassium-sodium photocathode, a chevron stack of two microchannel plates, and a metal anode.
The electrons are focused from the photocathode to the MCP input by the electrostatic lens field.
It can be used as a Cherenkov detector. Since PMT is thermally stable up to 150 °C, it can be used in devices operating under high climatic loads.
Specification
Basic technical characteristics
| Parameter, unit | Value |
|---|---|
| Spectral response range, nm | 300–650 |
| Integral sensitivity, μA/lm | 35, min |
| Photocathode active area diameter, mm | 17 |
| Gain at MCP voltage of 2400 V max | 106, min |
| Single electron pulse height resolution, % | 110, max |
| Dark count rate density, counts/sec·cm2 | 40, max |
| Peak-to-valley ratio | 10, min |
| Response pulse duration (FWHM), ns | 1.2 max |
| Anode current pulse rise time, ns | 0.8 max |