Vacuum Feedthrough Solutions

UHV-rated RF, BPM, high-voltage, high-current, and multi-signal feedthroughs for particle accelerators, national laboratories, and advanced research vacuum systems. We support standard configurations and fully customized designs with fast engineering feedback.

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Accelerator & BPM Feedthroughs

Designed for beam diagnostics and accelerator instrumentation under ultra-high-vacuum (UHV) conditions.

This category includes BPM buttons, triple-coaxial (TRB) feedthroughs, and low-noise RF signal interfaces optimized for stable, repeatable measurements in accelerator environments. Custom flange and connector configurations are available to match your beamline or diagnostic assembly.

UHV-compatible construction Low-noise signal path TRB / BPM support Custom flanges & layouts
Customization available: connector type, pin layout, flange standard, ceramic length, and grounding/shielding scheme.

Typical Applications

  • Beam Position Monitors (BPM)Button pickups and position diagnostics
  • Pickup electrodesBeam signal extraction and monitoring
  • Beam diagnostics systemsLow-noise RF transmission in UHV
  • Electron & proton acceleratorsInstrumentation interfaces and feedthrough assemblies

RF & Microwave Vacuum Feedthroughs

High-frequency signal transmission and high-power RF coupling for accelerator RF systems and research instrumentation.

RF and microwave feedthroughs support stable transmission across vacuum boundaries using common coaxial interfaces such as 2.92 mm, SMA, N-type, and BNC. For RF subsystems, options may include high-power variants and microwave windows depending on operating frequency and power mode (CW/pulsed).

2.92 mm / SMA / N / BNC High-frequency capability CW / pulsed options UHV-rated designs
Common requirements: frequency range, power (CW/pulsed), VSWR/insertion loss targets, connector standard, and flange type.

Typical Applications

  • RF cavities & couplersSignal paths and monitoring ports
  • Microwave diagnosticsHigh-frequency instrumentation feedthroughs
  • SSA / klystron systemsRF measurement & interface components
  • Vacuum RF test standsRepeatable lab setups

High Voltage Vacuum Feedthroughs

kV-level feedthroughs engineered for long creepage distance, stable insulation, and reliable operation in vacuum.

High-voltage feedthroughs are designed to minimize breakdown risk in vacuum by appropriate insulation geometry and materials. They are commonly used for electron guns, ion sources, and biasing in accelerator subsystems where long-term stability matters.

kV-rated insulation Creepage distance optimized Vacuum breakdown mitigation Custom ceramic length
Specify: operating voltage, polarity, duty cycle, environment (UHV/HV), flange, and any cleaning/bakeout constraints.

Typical Applications

  • Electron gunsHV bias and cathode assemblies
  • Ion sourcesExtraction and acceleration stages
  • Electrostatic elementsHV biasing in beamlines
  • Detector bias feedStable high-voltage interfaces

High Current Vacuum Feedthroughs

High-current power delivery across vacuum boundaries with thermal and mechanical stability for long run times.

High-current feedthroughs are commonly used for heaters, filaments, magnets, and experimental fixtures. Designs may support different conductor styles and mounting options depending on current level, temperature rise, and duty cycle.

High-current conduction Thermal stability Robust mechanical interface Custom terminations
Specify: current (A), duty cycle, allowable temperature rise, termination type, and any cooling constraints.

Typical Applications

  • Filament & cathode heatersStable power delivery in vacuum
  • Magnet connectionsPower interfaces for accelerator subsystems
  • Vacuum furnacesHeating elements and fixtures
  • Experimental chambersHigh-current test setups

Multi-Pin & Signal Vacuum Feedthroughs

Single-pin, multi-pin, and differential signal interfaces for control, monitoring, and instrumentation in vacuum systems.

Signal feedthroughs support DC and low-noise measurement signals, including multi-channel control wiring and differential signaling (e.g., RS-485). Custom pin layouts and mixed-signal configurations are available for instrument integration.

Single-pin & multi-pin Differential signaling Custom pin layouts Mixed-signal options
Specify: number of pins/channels, signal type, voltage/current per pin, connector preference, and shielding/grounding needs.

Typical Applications

  • Instrumentation wiringSensor readout and control lines
  • Motion & positioningVacuum-compatible actuator interfaces
  • Control systemsDifferential signal feedthroughs (RS-485)
  • Data acquisitionMulti-channel signal routing

Custom & Hybrid Feedthrough Solutions

Custom-designed feedthrough assemblies for complex accelerator and research systems requiring hybrid interfaces.

For systems that require multiple interface types in a single assembly, we support custom and hybrid designs such as RF + power, signal + high-current, or application-specific combinations. We collaborate with engineers to ensure compatibility with vacuum, RF, and mechanical constraints.

Hybrid interfaces Custom flanges Prototype to small batch Fast engineering feedback
Best for: non-standard flange geometry, special grounding, limited space, or mixed interface requirements.

Typical Applications

  • Accelerator upgradesRetrofits and interface consolidation
  • Beamline integrationSpace-limited hybrid assemblies
  • Custom diagnosticsMulti-interface instrumentation ports
  • Prototype systemsQuick iteration for R&D

Not sure which feedthrough fits your system?

Send us your flange standard, connector/interface needs, vacuum level, and operating conditions. Our engineers will recommend a standard option or propose a custom design.

Discuss Your Application
Helpful details: flange type (CF/KF/custom), vacuum level (HV/UHV), frequency range (if RF), voltage/current, duty cycle, bakeout temperature, and drawings (if available).