Photomultiplier tube (PMT) is a vacuum tube device in which light flux ranging from infrared to ultraviolet spectrum is converted into a flux of electrons with further amplification.
For the detection of very weak light signals the photon counting method is used to acquire maximum information. Discrete dynode PMTs, MCP-PMTs, avalanche diodes, hybrid PMTs are typically used as photon counting detectors. Among these types of detectors MCP-PMTs from VTC Baspik have the advantage of fast response, low dark count rate, increased surface area, low power consumption, and stable operation under the exposure to magnetic fields.
- In nuclear physics as a component of scintillation counter In laser and television devices
- In optical instrumentation
- For the detection of low-level radiation
- In nondestructive inspection aids as a detector in scanners for X-ray film digitization
PMT with a built-in voltage divider
voltage divider is mounted on the PMT vacuum unit providing the necessary electrode potentials of the device.
MCP-PMT which are photon counting devices with a built-in voltage divider are available in two versions:
- Sapphire-2AM for UV light
- Topaz-M for visible spectrum
PMTs can be supplied as vacuum units or with a voltage divider built into the same housing as the vacuum unit.
See also Particle Detection Techniques Using MCP-PMT.