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Temperature instabilities in a long-running pulse tube.

Author(s) : WALDAUF A., THÜRK M., SEIDEL P.

Summary

The authors report on investigations of anomalous temperature instabilities in a four-valve pulse-tube refrigerator. Spontaneous temperature variation, which occurred at the cold tip, were observed. The dc-flow could be identified as the remaining source of the observed anomaly. It can be eliminated by utilizing an actively controlled dc-flow suppression device, that uses a temperature difference in the regenerator as the control parameter. Further, the authors show corresponding improvements of the device to give a better performance of the cooler. The short-term temperature instabilities are eliminated as well.

Details

  • Original title: Temperature instabilities in a long-running pulse tube.
  • Record ID : 2006-0012
  • Languages: English
  • Source: Proceedings of the nineteenth International Cryogenic Engineering Conference. ICEC 19.
  • Publication date: 2002/07/22

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