Long current loops as regular solutions of the equation for coupling currents in a flat two-layer superconducting cable

Cryogenics

Volumn 43, Issue 3-5, 2003, Pages 317-322

  Akhmetov, A A ^a,b  

^a KARLSRUHE INSTITUTE OF TECHNOLOGY   (Germany)

^b JOINT INSTITUTE FOR HIGH TEMPERATURES   (Russian Federation)

Author keywords

AC loss; Electromagnetic phenomena; Superconducting cables

Indexed keywords

ELECTRIC CURRENTS; ELECTRIC LOSSES; MATHEMATICAL MODELS; WAVE EQUATIONS;

COUPLING CURRENTS;

SUPERCONDUCTING CABLES;

EID: 0038298713     PISSN: 00112275     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0011-2275(03)00028-6     Document Type: Conference Paper

References (27)

1. 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.
2. 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.
3. Akhmetov A.A., Kuroda K., Takeo M. Influence of sample geometry on amplitude of eddy current oscillation in Rutherford-type cables. IEEE Trans on Appl. Super. 5:1995;725-728.
4. Verweij A.P. Review on boundary-induced coupling currents. Balu Balachandran U. Adv. in Cryog. Eng. vol. 44B:1997;1059-1068 Plenum, New York.
5. 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.
6. Krempasky L., Schmidt C. Theory of supercurrents and their influence on field quality and stability of superconducting magnets. J. Appl. Phys. 78:1995;5800-5807.
7. Krempasky L., Schmidt C. Ramp rate limitation in large superconducting magnets due to 'supercurrents'. Cryogenics. 36:1996;471-483.
8. Akhmetov A.A., Devred A., Mints R., Schermer R.I. Current loop decay in Rutherford-type cables. Hale P. Supercollider. vol. 5:1995;443-446 Plenum, New York.
9. Bottura L, Breschi M, Fabbri M. An analytical benchmark for calculation of current distribution in superconducting cables. Presented at 'CHATS' workshop, September 2002, ITP, Forschungszentrum, Karlsruhe, Germany.
10. Akhmetov A.A. General equation for coupling currents in a flat superconducting cable subjected to a time-dependent magnetic field in the face-on orientation. Cryogenics. 41:2001;649-655.
11. Akhmetov A.A. Compatibility of two basic models describing the a.c. loss and eddy currents in flat superconducting cables. Cryogenics. 40:2000;445-457.
12. Mess K.H., Schmuser P., Wolff S. Superconducting accelerator magnets. 1996;World Scientific, Singapore.
13. Bottura L., Breschi M., Negrini F., Ribani P.L. Electromagnetic analysis of current distribution in multistrand superconducting cables. Inst. Phys. Conf. Ser. 167:2000;1191-1194.
14. Turck B. Influence of the transverse conductance on current sharing in a two-layer superconducting cable. Cryogenics. 14:1974;448-454.
15. 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.
16. Akhmetov A.A., Amet S., Balaazi I., Bottura L., Gateau M., Pugnat P.et al. Loss and dynamic magnetic field measurements in LHC dipoles. IEEE Trans. Appl. Supercond. 12:2002;31-34.
17. Krempasky L., Schmidt C. Time constant measurement in technical superconductors: A theoretical solution of the problem. J. Appl. Phys. 75:1994;4264-4266.
18. 3Sn cable-in-conduit conductors. IEEE Trans. Appl. Superconcond. 12:2002;524-527.
19. Akhmetov A.A., Kuroda K., Koga T., Ono K., Takeo M. Decay of long current loops in the superconducting cables. Inst. Phys. Conf. Ser. 148:1996;527-530.
20. 3Sn Rutherford cable. Cryogenics. 39:1999;1-12.
21. Sumption M.D., Scanlan R.M., Nijhuis A., ten Kate H.H.J., Collings E.W. Calorimetric measurements of nickel and stabrite coatings and resistive cores on AC loss in accelerator cables under fixed pressure. Summers L.T. Adv. in Cryog. Eng. vol. 42B:1997;1303-1311 Plenum, New York.
22. Verweij A.P., Leroy D., Walckiers L., Wolf R. Analysis of the AC loss measurements on the one-meter dipole model magnets for the CERN LHC. IEEE Trans. Magn. 30:1994;1758-1761.
23. Buckley J., Richter D., Walckiers L., Wolf R. Dynamic magnetic measurements of superconducting magnets for the LHC. IEEE Trans. Appl. Supercond. 5:1995;1024-1027.
24. Ang Z., Bejar I., Bottura L., Richter D., Sheehan M., Walckiers L.et al. Measurements of AC loss and magnetic field during ramps. IEEE Trans. Appl. Supercond. 9:1999;1039-1044.
25. 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: Proc. IEEE Particle Accelerator Conf., San Francisco. 1991. p. 2149-53.
26. Ghosh A.K., Robbins K.E., Sampson W.B. Axial variations in the magnetic field of superconducting dipoles. Nonte J. Supercollider. vol. 4:1992;765-772 Plenum, New York.
27. Bottura L., Walckiers L., Ang Z. Experimental evidence of boundary induced coupling currents in LHC prototypes. IEEE Trans. Appl. Supercond. 7:1997;801-804.