Comparison of self-field effects between Bi-2223/Ag tapes and pancake coils
β Scribed by A.K.M. Alamgir; C. Gu; Z. Han
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 401 KB
- Volume
- 424
- Category
- Article
- ISSN
- 0921-4534
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π SIMILAR VOLUMES
Long Bi-2223/Ag tapes were successfully fabricated by means of hot extrusion and repeated cold-rolling and sintering processes. On short pressed tapes, after the third thermomechanical cycle, critical current densities Je as high as 36 kA/cm 2 at 77 K and 64 kA/cm 2 at 65 K, 0 T were achieved. On 5
The measured self-field a.c. losses in mono-and multi-filamentary tapes with varying transport current, frequency and voltage tap configurations are compared to theoretical models. The observed losses are found to approach asymptotic values when the loop of the voltage taps is comparable to the widt
The transport critical current distribution of a rolled Bi(2223) tape with jc(77 K, 0 T) = 28 kA/cm 2 has been found to vary from 20 kA/cm 2 at the tape centre to 53 kA/cm 2 at the tape sides. The self-field generated by the high currents flowing in this tape has been studied at the liquid-nitrogen