ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The thermal conductivity of a superconducting coil in the transverse (with respect to the current flow) direction is one of the most important parameters in determining the stability of a coil and the quench velocity, i.e., the growth rate of the resistive zone. The complexity and the number of materials involved in a superconducting coil wound with NbTi and Nb3Sn conductor make the direct measurement of the thermal conductivity very useful. The design and the calibration of an apparatus for measurements of thermal conductivity at cryogenic temperatures of NbTi and Nb3Sn coil blocks and of Bi2Sr2CaCu2O8 rod are presented. Two different methods to determine the thermal conductivity curves from measured values, the derivative approximation method and the thermal conductivity integral, are discussed and compared. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1147583
