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.
Basic technical characteristics
|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|