Custom High-Voltage Vacuum Feedthroughs for UHV

High-voltage vacuum feedthroughs provide hermetic electrical interfaces for transmitting kV-level DC or pulsed voltage across HV/UHV vacuum boundaries.

They are engineered for applications requiring high dielectric strength, stable insulation, and long-term reliability, including accelerators, vacuum instrumentation, and high-voltage research systems.

• Voltage range: kV-level (application dependent)
• Signal type: DC or pulsed high voltage
• Vacuum rating: HV / UHV compatible
• Insulation: ceramic-to-metal hermetic seal
• Polarity: positive or negative HV
• Operation: continuous or pulsed

What This Product Demonstrates

This page presents representative high-voltage vacuum feedthrough designs. Final assemblies are custom-engineered based on voltage level, insulation distance, flange standard, and vacuum environment.

Typical Applications

• Particle accelerators and beamline components
• Electrostatic lenses and deflectors
• High-voltage electrodes in vacuum
• Vacuum power supplies and test systems
• Scientific and industrial HV vacuum equipment

What Is a High-Voltage Vacuum Feedthrough?

A high-voltage vacuum feedthrough enables electrical power to pass from atmosphere into a vacuum chamber while maintaining electrical insulation and vacuum integrity.

The design relies on a ceramic-to-metal hermetic seal that provides both dielectric isolation and mechanical strength under high electric fields.

Key Design Considerations

• Electric field distribution and creepage distance
• Dielectric strength of ceramic insulator
• Surface flashover prevention
• Thermal and mechanical stress during bakeout
• Long-term stability under high voltage

Customization Options

• Maximum operating voltage (kV level)
• DC or pulsed voltage operation
• Single-pin or multi-electrode designs
• Flange type (CF / KF / custom)
• Ceramic length and diameter
• Grounding and shielding configuration

Engineering Specification Checklist

• Target voltage level (kV)
• DC or pulsed operation
• Vacuum level (HV / UHV)
• Bakeout temperature requirement
• Flange type and mechanical constraints
• Polarity and insulation clearance
• Environmental and safety requirements

Related Feedthrough Solutions

• Accelerator & BPM Feedthroughs
• RF & Microwave Vacuum Feedthroughs
• High-Current Vacuum Feedthroughs
• Custom & Hybrid Feedthroughs

FAQ

What voltage range can a high-voltage vacuum feedthrough support?
High-voltage vacuum feedthroughs can be designed for kV-level operation. The exact rating depends on ceramic geometry, insulation distance, and vacuum conditions.

Can high-voltage feedthroughs be used in UHV systems?
Yes. Properly designed ceramic-to-metal sealed feedthroughs are compatible with UHV environments and high-temperature bakeout.

Are these feedthroughs suitable for pulsed high voltage?
Yes. Designs can support both continuous DC and pulsed high-voltage operation, depending on application requirements.