Abstract
In an effort to understand the stability mechanisms of internally cooled superconductors in the He II regime, measurements are made on a hollow composite superconductor open at both ends to a bath of subcooled He II. The vacuum insulated conductor, 3 meters long and 1.1 millimeters internal diameter, carries a transport current in a transverse background field of up to 11 Tesla. Heaters mounted on the conductor at its center are used to initiate local disturbances. The propagation or collapse of these disturbances is then observed using a series of temperature sensors and voltage taps attached symmetrically about the heater. The stability margin of the conductor is mapped out, and, using a simple theory, the pressure rise and thermal expulsion velocity are derived from the voltage and temperature profiles.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
J. C. Lottin and J. R. Miller, Stability of internally cooled superconductors in the temperature range 1.8 to 4.2 K, IEEE Tran. Mag. MAG-19(3): 439 (1983).
J. W. Lue, J. R. Miller, and L. Dresner, Stability of cable-in-conduit superconductors, J. Appl. Phvs. 51 (1): 772 (1980).
L. Dresner, Parametric study of the stability margin of cable-in-conduit superconductors: theory, IEEE Tran. Mag. MAG-17: 753 (1981).
L. Dresner, Transient heat transfer in superfluid helium — part II, in: “Advances in Cryogenic Engineering,” Vol. 29, Plenum Press, New York (1984), p. 323.
P. Seyfert, J. Lafferranderie, and G. Claudet, Time-dependent heat transport in subcooled superfluid helium, Cryogenics 22: 401 (1982).
L. Dresner, Protection considerations for force-cooled superconductors, in: “Proc. Eleventh Sym. on Fusion Engr.,” Austin, Texas (1985) p. 1218.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1988 Springer Science+Business Media New York
About this chapter
Cite this chapter
Canavan, E.R., Van Sciver, S.W. (1988). Evolution of Normal Zones and Temperature in a Superconductor Cooled Internally with Helium-II. In: Fast, R.W. (eds) Advances in Cryogenic Engineering. A Cryogenic Engineering Conference Publication, vol 33. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-9874-5_24
Download citation
DOI: https://doi.org/10.1007/978-1-4613-9874-5_24
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-9876-9
Online ISBN: 978-1-4613-9874-5
eBook Packages: Springer Book Archive