Ea. Chaniotakis, ENERGY MARGIN OF CABLE-IN-CONDUIT CONDUCTOR AS A FUNCTION OF OPERATING PRESSURE AND INITIAL HEATED ZONE, IEEE transactions on magnetics, 32(4), 1996, pp. 2966-2969
The intrinsic properties of low temperature helium exhibit strong vari
ations with changes in pressure and temperature, As a result, importan
t design parameters such as the energy margin of superconductors in th
e cable in conduit configuration is a strong function of the initial o
perating conditions. Since the energy margin of CICC's is dominated by
the available helium enthalpy, the dependence of the energy margin on
initial conditions can be derived from an examination of the helium p
roperties, For superconductors operating in the range of 6 to 8 K, the
energy margin can be improved by a factor of three with a suitable ch
oice of initial operating pressure, Other factors effecting the energy
margin include the length of the initial heated zone, and the length
of the heating pulse.