Title :
A.C. energy losses of Nb-Ti multifilamentary superconductors for the magnets of the nuclotron
Author :
Agapov, N.N. ; Dorofeev, G.L. ; Drobin, V.M. ; Kovalenko, A.D. ; Khodzhibagiyan, H.G. ; Vladimirova, N.M.
Author_Institution :
Joint Inst. for Nucl. Res., Dubna, Russia
fDate :
3/1/2002 12:00:00 AM
Abstract :
The performances of the installation used to measure a.c. energy losses of short superconducting samples in an external pulsed magnetic field are given. The calorimetric method at 4.2 K is used. The measurable range of losses is from 10 up to 1000 mW. The results of loss measurements of superconducting wires and tubular cables with a various diameter of superconducting filaments and twist length are presented. The experimental values of hysteresis and eddy current losses are compared with the calculated ones. The influence of the Nb barrier and solid-state diffusion on the loss values is investigated.
Keywords :
calorimetry; eddy current losses; loss measurement; magnetic hysteresis; multifilamentary superconductors; niobium alloys; superconducting magnets; titanium alloys; 10 to 1000 mW; 4.2 K; AC energy loss measurement; Nb barrier; Nb-Ti; Nb-Ti multifilamentary superconductor; calorimetric method; eddy current loss; hysteresis loss; nuclotron magnet; pulsed magnetic field; solid-state diffusion; superconducting wire; tubular cable; Energy loss; Energy measurement; Loss measurement; Magnetic field measurement; Magnets; Multifilamentary superconductors; Performance evaluation; Pulse measurements; Superconducting cables; Superconducting filaments and wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2002.1018593
