Pumping Port

Pumping Port

High-Performance Vacuum Connection


The Pumping Port, also known as a mode converter, is a highly precise component for the efficient transfer of electromagnetic waves between a rectangular and a circular waveguide. It is used in high-frequency systems such as linear accelerators (LINAC) and particle accelerators to transmit microwave power of up to 100 kW with minimal loss.

The core of the component is the taper, consisting of two precisely machined copper halves joined into a dense and robust unit by high-temperature brazing. A shape accuracy of 2 µm and extremely smooth surfaces ensure low-loss performance.

Applications

Precise guidance of microwaves in medical systems (e.g., radiation therapy) and industrial applications

Control and monitoring of beams in high-energy physics (e.g., CERN)

Microwave transmission in fusion research and plasma systems

Industries

Key Challenges

  • Extremely High Precision: Complex geometries with micrometer tolerances require state-of-the-art machining
  • Joining the Taper Halves: Dense and electrically/thermally ideal joints are essential for function
  • Surface Quality: Inner surfaces must be highly polished and reflection-minimized to reduce energy loss
  • Efficient Heat Dissipation: Microwave energy must be discharged without compromising structural integrity
  • Absolute Leak Tightness: No leakage or contamination—especially critical in UHV applications

Key Features

  • Ultra-Precision Milling: Shape accuracy of 2 µm and surface finish in the nanometer range
  • Material Selection: High-purity copper for optimal electrical conductivity and thermal dissipation
  • High-Temperature Brazing: Stress-free, dense, and vacuum-compatible joints with no excess filler
  • Geometric Accuracy: Any deviation impairs function; ensured by coordinate measuring and optical inspection
  • Vacuum Compatibility: Suitable for ultra-high vacuum; requires low outgassing materials and cleanroom production
  • Thermal Load Capacity: Withstands power levels up to 100 kW without compromising structural integrity

The Pumping Port is a key component in high-frequency systems, meeting the highest standards for performance, precision, and vacuum compatibility. With ultra-precision milling and high-temperature brazing, it fulfills extreme tolerance and load demands, enabling reliable transmission of microwave power up to 100 kW. An essential element in modern high-energy and fusion research.

Contact

Do you have questions?

We are happy to help and look forward to hearing from you.

REUTER TECHNOLOGIE GmbH
Röntgenstraße 1 - D-63755 Alzenau

+49 6023 5044-0
To contact form