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¹Kamerlingh Onnes Laboratory (LION), Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands.

The Review of Scientific Instruments

|September 4, 2009

Summary

This study presents a modified electromagnetically driven valve for liquid helium, designed for enhanced durability and reliability in regulating flow to a 1 K pot. A novel feature prevents seat deformation, ensuring robust performance during intensive use.

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Area of Science:

Cryogenics
Mechanical Engineering
Materials Science

Background:

Regulating liquid helium flow to cryogenic systems like 1 K pots is critical for stable operation.
Existing valve designs may face challenges with durability and seat deformation, especially under demanding conditions.

Purpose of the Study:

To present a modified electromagnetically driven, normally closed valve for precise liquid helium flow regulation.
To enhance the durability, reliability, and operational robustness of the valve for intensive use.

Main Methods:

Modification of an existing electromagnetically driven valve design.
Implementation of a new feature to prevent seat deformation at room temperature.
Tuning for improved reliability and durability.

Main Results:

The modified valve operates in a normally closed state, requiring actuation to open.
A novel feature effectively prevents seat deformation at room temperature.
The design is optimized for enhanced durability and reliability in demanding cryogenic applications.

Conclusions:

The presented valve offers a reliable and durable solution for liquid helium flow control in 1 K pots.
The new seat-protection feature significantly improves longevity and performance under intensive use.
This enhanced design contributes to the stability and efficiency of cryogenic experimental setups.