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A demountable nonmagnetic multiconductor feedthrough suitable for use in liquid helium applications
1Department of Physics, Indiana University, Bloomington, IN 47405, USA.
The Review of Scientific Instruments
|June 3, 2008
Summary
A novel nonmagnetic electrical feedthrough was developed for superfluid helium applications. This device utilizes brass pins in an epoxy resin plug on a beryllium copper Conflat flange, ensuring a tight seal for cryogenic environments.
Area of Science:
- Cryogenics
- Materials Science
- Electrical Engineering
Background:
- Superfluid helium requires specialized components for electrical connections.
- Maintaining a vacuum-tight seal in cryogenic environments is challenging.
- Nonmagnetic materials are crucial for certain sensitive experiments.
Purpose of the Study:
- To develop and characterize a nonmagnetic electrical feedthrough.
- To ensure a superfluid-helium-tight seal for cryogenic applications.
- To provide a reliable electrical connection in demanding environments.
Main Methods:
- Embedding brass pins within an epoxy resin plug.
- Mounting the epoxy plug on a beryllium copper Conflat flange.
- Testing the feedthrough for vacuum integrity and nonmagnetic properties.
Main Results:
- Successfully developed a nonmagnetic electrical feedthrough.
- Demonstrated superfluid-helium-tight sealing capabilities.
- The feedthrough performed reliably in cryogenic conditions.
Conclusions:
- The developed feedthrough is suitable for superfluid helium applications.
- The construction method provides a robust and reliable solution.
- This component advances capabilities for sensitive cryogenic experiments.
