Passive Superconducting Shielding: Experimental Results and Computer Models

B.A. Warner
Code 552
NASA/ Goddard Space Flight Center
Greenbelt, MD 20771

K. Kamiya
Tsukuba Magnet Laboratory
National Institute for Materials Science
Tsukuba, Ibaraki 305-0003, Japan

Passive superconducting shielding for magnetic refrigerators has advantages over active shielding and passive ferromagnetic shielding in that it is lightweight and easy to construct. However, it is not as easy to model and does not fail gracefully. Failure of a passive superconducting shield may lead to persistent flux and persistent currents. Unfortunately, modeling software for superconducting materials is not as easily available as is software for modeling solenoids or ferromagnetic materials. This paper will discuss ways of using available software to model passive superconducting shielding.

Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference -CEC, Vol. 49 Part A, ed. J. Waynert et al. pp. 1754 - 1760 (2004, American Institute of Physics).