Channeltron® Electron Multipliers

OEM Components


Photonis is the original manufacturer of Channeltron® electron multipliers, which offer the highest dynamic range to assure an absolutely linear response beyond the limits of most analytical instruments. Our advanced designs provide the highest sensitivity through superior signal collection and noise reduction. Learn more about the different types Channeltron® detectors we provide below or download our brochure
Looking for a replacement detector?
Download our OEM Guide now and find out which models are available as plug-and-play replacements.



Why choose genuine Channeltron® detectors?

If you want a true Channeltron Electron Multiplier, you must come to Photonis. As the original manufacturer of these products, we have the experience and knowledge necessary to recommend the right detector for your instrument. For years, customers have been using Channeltrons because of their superior ability to provide the most accurate analysis. Find out why Channeltrons are considered to be the premium choice among instrument manufacturers.

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Available in various shapes, sizes, and voltages, Photonis’ Channeltron® electron multipliers are engineered to deliver the highest performance available on the market. Cones, grids, coatings, collectors and leads can all be specified, or you can choose one of our many standard models. Improvements in conversion dynode technology have resulted in structures capable of operation at higher voltages and materials with improved ion-to-electron conversion yields for better sensitivity at higher masses.

More than half of the world’s mass spectrometer manufacturers rely on Photonis’ Channeltron® detectors to improve the reliability of their instruments. Due to their low mass and high gain, Channeltron® electron multipliers are also used in many nuclear physics labs and space applications to count electrons and charged particles in pulse mode operation. Other applications include residual gas analysis, plasma analysis, Auger, electron spectrometers, SEM, FIB and leak detectors.

As the original manufacturer, Photonis is able to customize Channeltron® electron multipliers to fit various instruments. We can provide complete assemblies as well in order to simplify the installation process. If you are looking to replace the detector in your analytical instrument, download our OEM Replacement Guide to find the right detector for your instrument.


Learning Highlight


How does a Channeltron® work?

Improvements in conversion dynode technology have resulted in structures capable of operation at higher
voltages and materials with improved ion-to-electron conversion yields for better sensitivity at higher masses.
Channel electron multipliers directly detect and amplify energetic photons and charged particles such as positive
and negative ions, electrons and assorted molecular and subatomic particles. In the diagram below,

If you’d like to learn more about how our Channeltron® technology works, download our complete Channeltron® Guide.



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Power supplies for Channeltrons®, MCP, TOF & APD

Our complete line of power supplies can provide power to our microchannel plates, Channeltron® channel electron multipliers, Microchannel Plate assemblies with Phosphor Screens, and BiPolar Time of Flight Detectors as well as most other laboratory applications. Each power supply supports a different, specific range of products and voltages.
ut, giving a visual representation of the radiation pattern.


  • Front panel mounted output voltage display
  • 90-240 V ac input voltage
  • Overload and short-circuit protected
  • Front panel mounted voltage adjustment
  • SHV output connectors
  • All solid-state design
  • Positive or Negative polarity
  • Exceptional stability
  • Low ripple < 0.05%
  • Compact design

High Voltage Power Supply PF1053
High Voltage Power Supply PF1054
High Voltage Power Supply PF1055

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