Elektrotechnický ústav SAV, v.v.i.

2003

Polak, M., Krempasky, L., Demencik, E., Wehler, D., Kreiskott, S., Moenter, B., Poyanskii, A., and Larbalestier, D.C.: Critical currents of narrow YBCO rings on Ni and LaAlO₃ substrates, IEEE Trans. on Applied Supercond. 13 (2003) 2595-2598.

2002

Eckelmann, H., Krempaský, L., and Schmidt, C.: Reduced ac-losses due to an interfacial resistivity between filaments and silver matrix in Bi-2223 multifilamentary tapes, Physica C 370 (2002) 177-186.

Schmidt, C., and Krempaský, L.: Ac-losses of superconducting Bi-2223 tapes with two different time constants, Cryogenics 42 (2002) 557-568.

Polák, M., Krempaský, L., Chromik, Š., Wehler, D., and Moenter, B.: Magnetic field in the vicinity of YBCO thin film strip and strip with filamentary structure, Physica C 372-376 (2002) 1830-1834.

2001

Eckelmann, H., Krempaský, L., and Schmidt, C.: Time constant measurements and effective permeability of a stack of high-T_c tapes, IEEE Trans. on Applied Supercond. 11 (2001) 2768-2771.

Polák, M. and Krempaský, L.: Study of important factors affecting AC losses of multifilamentary Bi-2223 tapes, Physica C 357-360 (2001) 1144-1152.

2000

Krempasky, L. and Schmidt, C.: Time constant measurement (decay of coupling currents) in high T_c tapes, IEEE Trans. on Applied Superconductivity 10 (2000) 1251-1254.

Foitl, M., Jansak, L., Kasztler, A., Kirchmayr, H., Kral, I., Krempasky, L., Kvitkovic, J., and Polak, M.: Magnetisation of Nb₃Sn wires using a Hall probe and an inductive measurement technique. In: Advanced in Cryogenic Engn. Ed. U.B.Balachandran. Vol. 46, Part B – ICMC-99 Montreal. New York, Kluwer Acad. 2000, P. 1019-1026.

1999

Krempaský, L. and Schmidt, C.: Experimental verification of ‚supercurrents‘ in superconducting cables exposed to AC-fields, Cryogenics 39 (1999) 23-33.

1998

Krempaský, L. and Schmidt, C.: Time constant measurement in technical superconductors, Cryogenics 38 (1998) 1017.

Krempaský, L. and Schmidt, C.: Influence of „supercurrents“ on the stability of supercvonducting magnets. In: ICMC’98, Topical Conf. on AC Loss & Stability. Twente (Holland) 1998, Physica C 310 (1998) 327.

Krempaský, L., Bussjager, R., and Schmidt, C.: Experimental verification of „supercurrents“ induced in superconducting cables expposed to AC-fields. In: Proc. of the 15^thInt. Conf. on Magnet Technology. Ed.Lin Liangzhen. Beiing, Sci Press 1998. P. 1283.

1996

Krempaský, L. and Schmidt, C.: Ramp-rate limitation in large superconducting magnets due to „supercurrents“, Cryogenics 36 (1996) 471.

Krempaský, L. and Schmidt, C.: A possible explanation of the problem of ramp rate limitation in large superconducting magnets, IEEE Trans. on Magnetics 32 (1996) 2340.

1995

Krempaský, L. and Schmidt, C.: Theory of „supercurrents“ and their influence on field quality and stability of superconducting magnets, J. of Applied Phys. 78 (1995) 5800.

Krempaský, L. and Schmidt, C.: Influence of a longitudinal variation of dB/dt on the magnetic field distribution of superconducting accelerator magnets, Applied Physics Lett. 66 (1995) 1545.

1994

Kokavec, J., Ušák, P., Krempaský, L., and Chovanec, F.: Precise determination of superconducting magnet axis, Cryogenics 34 (1994) S681.

Krempaský, L. and Schmidt, C.: Time constant measurement in technical superconductors, a theoretical solution of the problem, J. of Applied Phys. 75 (1994) 4264.

Hlásnik, I., Fukui, S., Amemiya, N., Tsukamoto, O., Ikeda, N., Kumamo, T., Suzuki, E., Polák, M., Kokavec, J., Krempaský, L., Kottman, P. : Pecularities in electromagnetic bahaviour of MF NbTi composites for AC use, IEEE Trans. on Magnetics 30 (1994) 1681.

Polák, M., Pitel, J., Krempaský, L., and Wolf, T.: Magnetic field produced by shielding currents in single crystals of high-temperature superconductors, Int. J. of Applied Electromagnetics in Materials 5 (1994) 115.

Krempaský, L. and Schmidt, C.: Theoretical analysis of time constant measurements of technical superconductors, IEEE Trans. on Magnetics 30 (1994) 2654.

Krempaský, L. and Schmidt, C.: Frequency behaviour of phase shift between magnetization and external ac-field in technical superconductors, Cryogenics 34 (1994) S563.

1993

Hlásnik, I., Tsukamoto, O., Fukui, S., Kumano, T., Polák, M., Kokavec, J., Majoroš, M., Krempaský, L., and Suzuki, E.: Influence of structure of filament NbTi composite on its electromagnetic characteristics, IEEE Trans. on Applied Supercond. 1 (1993) 1370.

Polák, M., Krempaský, L ., Majoroš, M., Suchoň, D., and Kirchmayer, H.: Anomalous ma gnetization behaviour in fine filamentary NbTi superconducting wires, IEEE Trans. on Applied Supercond. 1 (1993) 150.

Ušák, P., Kokavec, J., Chovanec, F., Krempaský, L., and Gregor, B.: B.: Safety and protection of 8T NbTi gyrotron magnet in persistent mode, IEEE Trans. on Magnetics 29 (1993) 2238.

1992

Polák, M., Majoroš, M., Pitel, J., Kokavec, J., and Krempaský, L.: Current densities and quench currents in laboratory 50 Hz magnet, Cryogenics 32 (1992) 398.

Ušák, P., Chovanec, F., Hanečka, B., Kokavec, J., and Krempaský, L.: The designe of stable race track superconducting switch, Cryogenics 32 (1992) 466.

Polák, M., Pitel, J., Krempaský, L., and Wolf, Th.: Magnetic field produced by shielding currents in single crystal of high temperature superconductor. In: Proc. 1^stJapanese-Czechosl. Joint Seminar on Applied Electromagnetics in Materials. Bratislava, STU 1992. P. 84.

Ušák, P., Kokavec, J., Chovanec, F., Krempaský, L., and Gregor, B.: Experience with operational and quench behaviour of large 8T gyrotron magnet. In: Cryogenics 92. Brno, ČS VTS 1992. P. 141.

1991

Chovanec, F., Kokavec, J., Krempaský, L., Ušák, P., Gregor, B., and Pitel, J.: Gyrotron superconducting magnet systems for ITER program. In: Proc. 2^ndCzechosl. – Italian Symposium on Superconductivity. Bratislava, Veda 1991. P. 154.

Ušák, P., Kokavec, J., Chovanec, F., Krempaský, L., and Gregor, B.: The gyrotron magnets overheating and dynamics of heat input into helium base after the quench. In: Proc. 2^nd Czechoslovak-Italian Symp. on Superconductivity. Bratislava, Veda 1991. P. 160.

Polák, M. and Krempaský, L.: Time dependence of magnetization of NbT multifilamentary wires. Primärbericht, Karlsruhe, Kernforschungszentrum 1991.

1988

Polák, M., Hanic, F., Hlásnik, I., Majoroš, M., Chovanec, F., Horváth, I., Krempaský, L., Kottman, P., Kedrová, M., and Gáliková, L.: Critical current density magnetization and AC losses in the YBa₂Cu₃O_6+x superconductor, Physica C 156 (1988) 79.

Majoroš, M., Gömöry, F., Kokavec, J., Krempaský, L ., Polák, M., Cesnak, L., Dolgošejev, P.I., Poljakova, N.V., Sytnikov, V.E., Dzugutov, V.M., Fischer, L.N., Kovačev, V.T. a Nenkov, K.A.: Sravniteľnyj analiz metodov izmerenija poter v lentočnych sverchprovodnikach vo vnešnem peremonnom magnitnom pole, Elektrotechn. časopis 39 (1988) 202.

1986

Chovanec, F., Kokavec, J., Krempaský, L ., Janšák, L. a Ušák, P.: Sverchprovodjaščije magnitnyje sistemy dlja SVC kompelksa nagreva plazmy v ustanovke Tokamak T-15. In: Trudy 1. meždunar. symp. po fiziko-techn. problemam ispoľzovanija sverchprovodimosti v energetike. Bratislava, EÚ CEFV SAV 1986. P. 75.

Polák, M., Majoroš, M. a Krempaský, L.: K voprosu vlijanija poverchnostnych tokov i formy voľtampernych charakteristik na krivke namagničivanija mnogožiľnych sverchprovodnikov. In: Trudy 1. meždunar. symp. po fiziko-techn. problemam ispoľzovanija sverchprovodimosti v energetike. Bratislava, EÚ CEFV SAV 1986. P. 162.

Polák, M., Majoroš, M. a Krempaský, L .: Magnitnyje svojstva cuni matrici mnogožiľnogo sverchprovodnika i jego vlijanije na gisterezisnyje poteri. In: Trudy 1. meždunar. symp. po fiziko-techn. problemam ispoľzovanija sverchprovodimosti v ener getike. Bratislava, EÚ CEFV SAV 1986. P. 181.

1985

Hlásnik, I., Takács, S., Burjak, B.P., Majoroš, M., Krajčík, J., Krempaský, L., Polák, M., Jergel, M., Korneva, A.T., Mironova, O.N., and Ivan, J.: Properties of superconducting NbTi superfine filament composites with d 0.1 µ, Cryogenics 25 (1985) 558.

Polák, M., Majoroš, M., and Krempaský, L .: K voprosu vlijanija poverchnostnych tokov i formy voľtampernych charakteristik na krivyje nemagnichivanija mnogožilnych sverchprovodnikov. In: Trudy 1. meždunar. simp. po fiziko-techn. problemam ispoľzovanija sverch. v energetike. Smolenice, 1985. P. 162.

1983

Takács, S., Polák, M., and Krempaský, L.: Critical currents of NbTi tapes with differently oriented defects, Cryogenics 23 (1983) 155.

1982

Turck, B., Lefevre, E., Polák, M., and Krempaský, L.: Coupling losses in a rectangular multifilamentary superconducting composite, Cryogenics 22 (1982) 441.

1981

Polák, M., Krempaský, L., Hlásnik, I., Perot, D.: AC losses in flat superconducting cables, IEEE Trans. on Magnetics 17 (1981) 2035.

Cesnak, L., Jergel, M., Krempaský, L., Polák, M., and Takács, S.: On the preparation and study of superconductors, Acta Physica Hungarica 50 (1981) 153.

Polák, M., Krempaský, L., Hlásnik, I., and Perot, J.: Losses in 23 strands NbTi and Nb₃Sn flat cables, IEEE Trans. on Magn. 17 (1981) 2035.

1980

Hlásnik, I., Ries, G., Polák, M., and Krempaský, L.: An additional loss source in cabled multifilamentary superconductors, Cryogenics 20 (1980) 491.

1979

Best, J.K., Hillman, H., Krempaský, L., Polák, M., and Turck, B.: Anisotropy of the critical current in solid solution superconductor NbTi, IEEE Trans. on Magnetics 15 (1979) 395.

Best, J.K., Genevey, P., Hillman, H., Krempaský, L., Polák, M., and Turck, B.: Anisotropy of optimized and not optimized technical NbTi superconductor, IEEE Trans. on Magnetics 15 (1979) 765.

Krempaský, L., Polák, M., Chovanec, F., and Štofanik, F.: Metod izmerenia anizotropii namagnicennosti sverchprovodja šč ich kabelej, Sov. J. of Technical Phys. 49 (1979) 623.

1978

Krempaský, L.: A.C.losses in flat twisted superconducting cables. In: Cern, Europ. Org. for Nuclear Res. SPS(EA), 1978. P. 78-2.

1977

Turck, B., Krempaský, L., and Polák, M.: Self-field and external field effects in the current distribution in superconducting wires. In: Proc. 6^th Int. Conf. on Magnet Techn. Bratislava, Alfa 1977.

1976

Krempaský, L.: A simple method for measuring magnetization of superconducting wires, Cryogenics 16 (1976) 178.

Polák, M., Krempaský, L., and Vencel, L.: Multiprobe miniature Hall effect system for measurement of magnetic field profiles, Cryogenics 16 (1976) 182.

Duchateau, J.L., Tursk, B., Krempaský, L., and Polák, M.: The self field effect in twisted superconducting composites, Cryogenics 16 (1976) 97.

1974

Krempaský, L., Polák, M., and Turck, B.: Observation de la transition resistive an voisinage du courrant critique de composites supraconducteurs. Preprint BT/MV-SEDAP/74-85 EG. France, CEN Saclay 1974.

1973

Firth, M., Haebel, E., Krempaský, L., and Schmeissner, F.: Performance of the superconducting field shielding tube for the CERN 2 meter hydrogen buble chamber, Rev. Sci. Instruments 44 (1973) 244.

Hlásnik, I., Krempaský, L., and Polák, M.: Angular dependence of E-I characteristics of thin NbTi wires in flux-creep conditions, Physica Status Solidi A 16 (1973) K153.

Polák, M., Hlásnik, I., and Krempaský, L.: Voltage-current characteristics of NbTi and Nb₃Sn superconductors in the flux creep region, Cryogenics 13 (1973) 702.

1970

Firth, M., Krempaský, L., and Schmeissner, F.: Preliminary work on field-free particle beem paths from hollow superconducting shielding. In: Proc. Int. Conf. MT-3 on Magnet Technology. Hamburg 1970. P. 1178.

1967

Krempaský, L.: The solenoids precooled by liquid nitrogen for pulsed magnetic field. In: Proc. Int. Conf. MT-2 on Magnet Technology. Oxford 1967. P. 171.

1965

Hlásnik, I., Krempaský, L. a Polák, M.: Supravodivý magnet, Elektrotechn. čas. 16 (1965) 559.

Ing. Ludovít KREMPASKÝ, CSc.