Compatibility of two basic models describing the a.c. loss and eddy currents in flat superconducting cables

Cryogenics

Volumn 40, Issue 7, 2000, Pages 445-457

  Akhmetov, A A ^a  

^a JOINT INSTITUTE FOR HIGH TEMPERATURES   (Russian Federation)

Author keywords

[No Author keywords available]

Indexed keywords

EDDY CURRENTS; ELECTRIC LOSSES; MATHEMATICAL MODELS;

ALTERNATING CURRENT (AC) LOSS;

SUPERCONDUCTING CABLES;

EID: 0034482064     PISSN: 00112275     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0011-2275(00)00064-3     Document Type: Article

References (27)

1. Morgan G.H. Eddy currents in flat metal-filled superconducting braids. J Appl Phys. 44:1973;3319-3322.
2. Campbell A.M. A general treatment of losses in multifilamentary superconductors. Cryogenics. 22:1982;3-16.
3. Sytnikov V.E., Svalov G.G., Akopov S.G., Peshkov I.B. Coupling losses in superconducting transposed conductors located in changing magnetic fields. Cryogenics. 29:1989;926-930.
4. Verweij A.P., Ten Kate H.H.J. Coupling currents in Rutherford cables under time varying conditions. IEEE Trans Appl Supercond. 3:1993;146-149.
5. Akhmetov A.A., Devred A., Ogitsu T. Periodicity of crossover currents in a Rutherford-type cable subjected to a time-dependent magnetic field. J Appl Phys. 75:1994;3176-3183.
6. Verweij A.P., Ten Kate H.H.J. Super coupling currents in Rutherford type of cables due to longitudinal non-homogenities of. dB/dt IEEE Trans Appl Supercond. 5:1995;404-407.
7. Akhmetov A.A., Kuroda K., Ono K., Takeo M. Eddy currents in flat two-layer superconducting cables. Cryogenics. 35:1995;495-504.
8. Verweij AP. Electrodynamics of superconducting cables in accelerator magnets. PhD Thesis, University of Twente, Enschede, 1995.
9. Devred A, Ogitsu T. Ramp-rate sensitivity of SSC dipole magnet prototypes. In: Kurokawa SI, Month M, Turner S, editors. Frontiers of accelerator technology. Singapore: World Scientific; 1996. p. 184-308.
10. Ghosh AK, Robbins KE, Sampson WB. Axial variations in the magnetic field of superconducting dipoles. In: Nonte J, editor. Supercollider, vol. 4. New York: Plenum; 1992. p. 765-72.
11. Brück H, Gall D, Krzywinski J, Meinke R, et al. Observation of a periodic pattern in the persistent-current fields of the superconducting HERA magnets. In: Proceedings of the IEEE Particle Accelerator Conference. San Francisco; 1991. p. 2149-53.
12. Bottura L., Walckiers L., Ang Z. Experimental evidence of boundary induced coupling currents in LHC prototypes. IEEE Trans Appl Supercond. 7:1997;801-804.
13. Wilson M.N. Superconducting magnets for accelerators: a review. IEEE Trans Appl Supercond. 7:1997;727-732.
14. Pugnat P, Schreiner Th, Siemko A. Investigation of a periodic magnetic field modulation inside apertures of LHC superconducting dipole magnets. In: Presented at 7th European Particle Accelerator Conference. EPAC2000, Vienna, Austria, 2000 June 26-23.
15. Krempasky L., Schmidt C. Theory of supercurrents and their influence on field quality and stability of superconducting magnets. J Appl Phys. 785:1995;800-5807.
16. Akhmetov AA, Devred A, Mints RG, Schermer RI. Current loop decay in Rutherford-type cables. In: Hale P, editor. Supercollider, vol. 5. New York: Plenum; 1995. p. 443-6.
17. Krempasky L., Schmidt C. Experimental verification of 'supercurrents' in superconducting cables exposed to AC-fields. Cryogenics. 39:1999;23-33.
18. Akhmetov A.A., Ivanov S.S., Shchegolev I.O. Further analysis of the eigen-frequency spectrum of a flat two-layer superconducting cable. Supercond Sci Technol. 13:2000;127-133.
19. Collings EW, Sumption MD, Kim SW, Wake M, Shintomi T, Scanlan R. Suppression of eddy current loss in bare-copper Rutherford cables using stainless steel cores of various thicknesses. In: Haruyama T, Mitsui T, Yamafuji K, editors. Procedings of the 16th ICEC/ICMC Conference. Kitakyushu, Japan; 1996. p. 1767-70.
20. Lei Y.Z., Shintomi T., Terashima A., Hirabayashi H. AC loss measurement of Rutherford type superconducting cables under mechanical stresses. IEEE Trans Appl Supercond. 3:1993;747-750.
21. Sumption M.D., Ten Kate H.H.J., Scanlan R.M., Collings E.W. Contact resistance and cable loss measurements of coated strands and cables wound from them. IEEE Trans Appl Supercond. 5:1995;692-696.
22. 3Sn Rutherford cable. Cryogenics. 39:1999;1-12.
23. 3Al Rutherford cables with and without a stainless steel core. IEEE Trans Appl Supercond. 10:2000;1196-1199.
24. Turck B. Influence of the transverse conductance on current sharing in a two-layer superconducting cable. Cryogenics. 14:1974;448-454.
25. Shimada M., Mitchell N. Simulation of the ITER-CS coil operation including the effect of the ramp rate limitation. IEEE Trans Appl Supercond. 7:1997;759-762.
26. Krempasky L., Schmidt C. Time constant measurement in technical superconductors: a theoretical soulution of the problem. J Appl Phys. 75:1994;4264-4266.
27. Krempasky L., Schmidt C. Time constant measurements in technical superconductors. Cryogenics. 38:1998;1017-1029.