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A high-density customizable microwave vacuum feedthrough for cryogenic applications.

A N McCaughan1, J I Gammell2, D M Oh2

  • 1National Institute of Standards and Technology, Boulder, Colorado 80305, USA.

The Review of Scientific Instruments
|February 5, 2020
PubMed
Summary
This summary is machine-generated.

We developed a customizable, low-cost electrical vacuum feedthrough for high-vacuum systems. Its printed circuit board design supports numerous microwave signals with a low leak rate, verified in cryogenic applications.

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Area of Science:

  • Physics
  • Electrical Engineering
  • Materials Science

Background:

  • High-vacuum systems require specialized components for signal transmission.
  • Existing vacuum feedthroughs may lack high microwave signal capacity or customizability.

Purpose of the Study:

  • To design and test a novel electrical vacuum feedthrough.
  • To ensure high vacuum compatibility and a large number of microwave signal lines.
  • To offer a customizable and low-cost solution for scientific applications.

Main Methods:

  • Design and construction of a printed circuit board (PCB)-based vacuum feedthrough.
  • Leak rate testing to determine high vacuum compatibility.
  • Verification of microwave signal transmission capabilities.
  • Mechanical robustness testing and real-world cryogenic system integration.

Main Results:

  • Achieved a leak rate of approximately 10-7 Pa L/s, suitable for high-vacuum environments.
  • Demonstrated the capacity to carry a large number of microwave signal lines.
  • Confirmed low-cost manufacturing and high customizability via PCB design.
  • Verified operational performance and mechanical integrity in a cryogenic system.

Conclusions:

  • The developed electrical vacuum feedthrough meets stringent high-vacuum requirements.
  • Its customizable, PCB-based design offers a versatile and cost-effective solution.
  • The feedthrough is suitable for demanding applications, including cryogenic systems requiring numerous microwave signals.