Thermodynamics of a closed-cycle gas flow system for cooling a HTc dc-SQUID magnetometer

P.J. van den Bosch, H.J.M. ter Brake, G.C. van den Eijkel, J.P. Boelens, H.J. Holland, J.F.C. Verberne, H. Rogalla

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Abstract

A multichannel high-Tc dc-SQUID based heart-magnetometer is currently under development in our laboratory. The system is cooled by a cooler that, due to its magnetic interference, has to be separated from the SQUID unit. In the present prototype system a closed-cycle gas flow was chosen as the interface between the SQUID unit and the cooler (a Leybold Heraeus RG 210). In this paper the prototype system is shortly described, its thermodynamic behaviour is considered and simulations are compared with experimental results.
Original languageEnglish
Pages (from-to)143-150
Number of pages8
JournalCryogenics
Volume34
Issue numberSuppl. 1
DOIs
Publication statusPublished - 1994
Event15th International Cryogenic Engineering Conference, ICEC 1994 - Genoa, Italy
Duration: 7 Jun 199410 Jun 1994
Conference number: 15

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