Channeltron® Electron Multipliers

Channeltron® Electron Multipliers
Channeltron® Electron Multipliers
Channeltron® Electron Multipliers

PHOTONIS is the world’s largest supplier of standard, retrofit and custom electron multipliers for mass spectrometry. Our advanced designs provide the highest sensitivity through superior signal collection and noise reduction.


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.

Due to their low mass and high gain, electron multipliers are used in many nuclear physics labs and space applications to count electrons and charged particles in pulse mode operation. Typical applications include mass spectrometry, RGA, plasma analysis, Auger, electron spectrometers, SEM, FIB and leak detectors.

PHOTONIS offers two different types of electron multipliers: Open and Single Channel.  Open multipliers are used in a number of mass spectrometry applications. Single channel electron multipliers are used in the detection core of many scientific instruments.



Channeltron® Electron Multipliers

Channeltron® Electron Multipliers

Channeltron® Electron Multipliers are durable and efficient detectors of positive and negative ions as well as electrons and photons. PHOTONIS offers over 200 standard and custom designs. PHOTONIS’s exclusive detector design provides sustained output longer than other detectors, making Channeltron® Mass Spectrometer Detectors the most cost effective detectors available on the market.

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Miniature Channeltron® Electron Multipliers

Miniature Channeltron® Electron Multipliers

Miniature Channeltron® Electron Multipliers® are the ideal choice for portable low-cost instruments in analog or pulse counting applications due to a combination of gain (greater than 10 million) and low noise. Applications include leak detectors, portable mass spectrometers, and enviornmental sensors.

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Spiratron™ High Pressure Electron Multipliers

Spiraltron™ High Pressure Electron Multipliers

Spiraltron™ High Pressure Channel Electron Multipliers are specifically designed for high pressure applications, such as portable mass spectrometers. It features a six channel structure which has been spiraled to optimally reduce ion feedback. The number of spirals per inch can be changed, resulting in a longer or shorter travel path. Spiraltron™ Electron Multipliers can operate effectively at pressures well into the 10-3 Torr range.

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MegaSpiraltron™ High Pressure Electron Multipliers

MegaSpiraltron™ High Pressure Electron Multipliers

The MegaSpiraltron™ uses the same technology as a Spiraltron™, but in a small housing which achieves high gain and low noise. These small and compact detectors can be manufactured with customized options to enhance detection capability. The MegaSpiraltron™ operates effectively at pressures as high as 10-2 Torr.

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MAGNUM® Electron Multipliers

MAGNUM® Electron Multipliers

MAGNUM Electron Multipliers® offer exceptional performance for optimum mass resolution, dynamic range, and detection sensitivity in Mass Spectrometry measurements. This performance boost is a result of PHOTONIS Spiraltron™ technology using six individual spiral multiplier channels, fed by a single integral ion collection aperture. The high degree of channel curvature ensures that ion feedback noise is virtually eliminated.

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