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Note: Development of a cryocooler based high efficiency cryosorption pump.

Ravi Verma1, Aritra Chatterjee1, Srinivasan Kasthurirengan2

  • 1Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India.

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Summary
This summary is machine-generated.

A new cryosorption pump offers superior pumping speeds, exceeding commercial models by 1.5x in specific pressure ranges. This advancement utilizes high-capacity materials and thermally conductive adhesives for enhanced performance.

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Area of Science:

  • Vacuum Technology
  • Materials Science
  • Fusion Energy

Background:

  • Commercial cryopumps face limitations in specific pressure ranges.
  • High pumping speed is critical for applications like fusion energy.

Purpose of the Study:

  • To develop a novel cryosorption pump with enhanced pumping speeds.
  • To evaluate its performance against existing commercial cryopumps.

Main Methods:

  • Utilized a material with high adsorbing capacity.
  • Incorporated an adhesive with high thermal conductivity.
  • Measured pumping speeds for nitrogen, argon, hydrogen, and helium.

Main Results:

  • The developed cryosorption pump demonstrated pumping speeds at least 1.5 times higher than commercial pumps.
  • Superior performance was observed in the pressure range of 5 × 10-6 mbar to 5 × 10-5 mbar.
  • The pump showed high efficiency for various gases.

Conclusions:

  • The novel cryosorption pump offers significant performance improvements.
  • This technology is highly beneficial for fusion applications requiring high vacuum.
  • The material and adhesive choices are key to the pump's enhanced capabilities.