Thermodynamics of a closed-cycle gas flow system for cooling a HTc DC-squid magnetometer

✍ Scribed by 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

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 543 KB
• Volume: 34
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(05)80030-x

✦ Synopsis

A multichannel high-To 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.