High-Voltage Vacuum Feedthroughs up to kV for UHV
High Voltage Vacuum Feedthroughs (kV Interfaces for UHV Systems)
kV-level insulated feedthroughs engineered for creepage distance, stability, and vacuum breakdown mitigation.
- Best for: electron guns, ion sources, electrostatic elements, detector bias
- Common interfaces: stud / cable termination, CF/KF/custom flanges
- Customization: voltage/polarity, duty cycle, ceramic length, bakeout constraints
kV-Level Insulated Interfaces for UHV & Accelerator Systems
Overview
High voltage (HV) vacuum feedthroughs are hermetic interfaces designed to safely transmit kilovolt-level electrical potentials across vacuum boundaries while maintaining HV/UHV integrity. They are commonly used in electron guns, ion sources, electrostatic beamline components, and detector bias systems.
What Is a High Voltage Vacuum Feedthrough?
A high-voltage vacuum feedthrough provides an insulated electrical path from atmosphere to vacuum using ceramic-to-metal sealing and optimized insulation geometry. Its primary role is to prevent electrical breakdown in vacuum while ensuring long-term stability.
Why High Voltage Design Matters in Vacuum
High-voltage operation in vacuum introduces challenges such as:
- Surface flashover and vacuum breakdown
- Creepage distance limitations
- Field enhancement at interfaces
- Thermal and mechanical stress during bakeout
Proper HV feedthrough design mitigates these risks through material choice and geometry control.
Voltage Range & Design Features
- Voltage range: kV-level (application dependent)
- Key features:
- Long creepage distance insulation
- Optimized ceramic geometry
- UHV-compatible sealing
- Stable performance during bakeout
- CF / KF / custom flange compatibility
Typical Applications
- Electron guns and cathode assemblies
- Ion sources and extraction electrodes
- Electrostatic lenses and deflectors
- Detector bias feed lines
- High-voltage test and research chambers
Customization Options
- Voltage rating and polarity
- Ceramic length and diameter
- Flange standard and size
- Termination style (stud, cable, custom)
- Cleaning and bakeout constraints
Engineering Specification Checklist
- Target voltage and polarity
- Vacuum level (HV / UHV)
- Flange type (CF / KF / custom)
- Duty cycle and operating environment
- Bakeout temperature
- Mechanical constraints or drawings