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Design and construction of a non-magnetic and non-metallic miniature pulse-tube cooler.

Author(s) : DANG H. Z., JU Y. L., ZHOU Y.

Summary

The pulse-tube cryocoolers (PTCs) are promising candidates for SQUIDs cooling because of the increased reliability and reduced vibrations. But the electromagnetic interference and eddy currents originated from the metallic-made components of PTCs are still enormous obstacles for practical applications. The paper first analyses the main sources of interference signals of a PTC system, and finds solutions to minimize and/or eliminate them. Then a non-metallic and non-magnetic miniature PTC (NNMPTC) for the low-noise cooling of high-Tc SQUIDs was designed and fabricated. The cryogen-free operation of high-Tc SQUIDs by the NNMPTC is currently underway.

Details

  • Original title: Design and construction of a non-magnetic and non-metallic miniature pulse-tube cooler.
  • Record ID : 2006-0009
  • Languages: English
  • Source: Proceedings of the nineteenth International Cryogenic Engineering Conference. ICEC 19.
  • Publication date: 2002/07/22

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