Title :
AC loss measurement of the 45-T hybrid/CIC conductor
Author :
Baudouy, B.J.P. ; Bartholomew, K. ; Miller, J. ; van Sciver, S.W. ; Oliva, A.B.
Author_Institution :
Nat. High Magnetic Field Lab., Florida State Univ., Tallahassee, FL, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
The results of calorimetric measurements of the AC loss in a cable-in-conduit (CIC) conductor under development for the a 45T hybrid superconducting outsert magnet are reported. The technique is unique in that the absorbed energy is determined by measurement of the temperature rise in the He II contained in the conductor. The sample is located in a separate cryostat and placed in the bore of a 7 T superconducting dipole magnet. A change in transverse field results in heating which produces an easily measurable temperature increase of the helium surrounding the conductor. Samples of Nb/sub 3/Sn CIC conductor developed for the high field portion of the 45 T hybrid magnet system have been measured. The time constant measured for this sample is compared to analysis based on a combination of hysteresis and eddy current losses.<>
Keywords :
cryostats; eddy current losses; electric conduits; loss measurement; magnetic hysteresis; niobium alloys; power cable testing; power cables; superconducting cables; superconducting coils; superconducting magnets; temperature measurement; tin alloys; 45 T; 7 T; AC loss measurement; Nb/sub 3/Sn; absorbed energy; cable-in-conduit superconductor; cryostat; eddy current losses; hybrid superconducting outsert magnet; hysteresis losses; superconducting dipole magnet; temperature rise; time constant; transverse field; Boring; Conductors; Energy measurement; Loss measurement; Magnetic field measurement; Magnetic separation; Superconducting cables; Superconducting magnets; Temperature measurement;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
