High-voltage and optical design expertise

We supply both custom and production Electron Guns and Electron Sources for OEM’s and various research entities. Our Electron Guns and Electron Sources are used on Traveling Wave Tubes (TWT’s), Klystrons, X-ray Sources and primarily on linear accelerators for medical (oncology), industrial screening and national laboratory applications.

Electron guns are assembled by highly trained and skilled technicians who also have prior electron gun building ex perience. Absolute cleanliness and attention to detail is used to make all our electron guns. Several high magnification optical inspections and measurements are recorded during the build. Most electron guns are baked-out and stored in vacuum-tight metal canisters while some are also hi-potted (high-voltage processed and conditioned) and emission tested, where cathode roll-off curves are inspected for conformance.

Electrical Requirements

Nominal Range
Perveance 0.9 μpervs .01 to 1.4 μpervs
Cathode Voltage -12 kV -9 to -15 kV
Heater Voltage 5.0 V (Max.)
Heater Current 1.6 A (Max.)
Leakage Cathode to Ground 100μA (Max.) at 18 kV

Cathode - Dispenser Type

Coating M-Type: 80% Os, 20% W
Mix 5:3:2 with a molecular weight of 67.3% BaO, 14.8% CaO & 17.9% Al2O3
Optional Mix 3:1:1, 4:1:1, 6:1:2

Performance

Nominal Range
Emission 1200 mA 0-1500 mA

Environmental Requirements

Range
Operating Temperature -5 ℃ to +40 ℃
Storage Temperature -20 ℃ to +60 ℃

Beam Profile

Electrical Requirements

Nominal Range
Perveance 0.3 μpervs .01 to .4 μpervs
Cathode Voltage -18 kV -15 to –20 kV
Heater Voltage 5.5 V (Max.)
Heater Current 1.6 A (Max.)
Leakage Cathode to Ground 100μA (Max.) at 20 kV

Cathode - Dispenser Type

Coating M-Type: 80% Os, 20% W
Mix 4:01:01
Optional Mix 3:1:1, 5:3:2, 6:1:2

Performance

Nominal Range
Emission 600 mA 0-750 mA

Environmental Requirements

Range
Operating Temperature -5 ℃ to +40 ℃
Storage Temperature -20 ℃ to +60 ℃

Beam Profile

Looking for a reliable & stable partner?

High
Energy
Electron
Guns (Varian)

We have optical and high-voltage design expertise for you.
We’ve built photoemission guns, but our designs use impregnated cathodes, which use thermionic emission to generate electrons from the heat created by the heater or filament. These electrons are then voltage biased by a grid or electrode and focused into the desired direction or circuit.
Cathodes are provided from one of the two leading cathode manufacturers in the US and can be provided with virtually any of the known impregnation mixes and/or coatings. We also have our own proprietary grid forming and manufacturing process which offers better delivery and control over key features.
We’ve built photoemission guns, but our designs use impregnated cathodes, which use thermionic emission to generate electrons from the heat created by the heater or filament. These electrons are then voltage biased by a grid or electrode and focused into the desired direction or circuit.
Cathodes are provided from one of the two leading cathode manufacturers in the US and can be provided with virtually any of the known impregnation mixes and/or coatings. We also have our own proprietary grid forming and manufacturing process which offers better delivery and control over key features.

Electrical Requirements

Nominal Range
Perveance 0.25 μpervs .01 to 0.3 μpervs
Cutoff TBD V TBD V
Cathode Voltage -25 kV -20 to –30 kV
Grid Drive TBD V TBD V
Heater Voltage 6.0 V (Max.)
Heater Current 3.5 A (Max.)
Leakage Cathode to Ground 100μA (Max.) at 30 kV

Cathode - Dispenser Type

Coating M-Type: 80% Os, 20% W
Mix 3:1:1
Optional Mix 5:3:2, 4:1:1, 6:1:2

Performance

Nominal Range
Emission 1000 mA 0-1100 mA

Environmental Requirements

Range
Operating Temperature -5 ℃ to +40 ℃
Storage Temperature -20 ℃ to +60 ℃

Beam Profile