High-temperature superconducting conductors and cables

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This is the final report of a 3-year LDRD project at LANL. High-temperature superconductivity (HTS) promises more efficient and powerful electrical devices such as motors, generators, and power transmission cables; however this depends on developing HTS conductors that sustain high current densities J{sub c} in high magnetic fields at temperatures near liq. N2`s bp. Our early work concentrated on Cu oxides but at present, long wire and tape conductors can be best made from BSCCO compounds with high J{sub c} at low temperatures, but which are degraded severely at temperatures of interest. This problem is associated with thermally activated motion ... continued below

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17 p.

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Peterson, D. E.; Maley, M. P.; Boulaevskii, L.; Willis, J. O.; Coulter, J. Y.; Ullmann, J. L. et al. September 1996.

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Description

This is the final report of a 3-year LDRD project at LANL. High-temperature superconductivity (HTS) promises more efficient and powerful electrical devices such as motors, generators, and power transmission cables; however this depends on developing HTS conductors that sustain high current densities J{sub c} in high magnetic fields at temperatures near liq. N2`s bp. Our early work concentrated on Cu oxides but at present, long wire and tape conductors can be best made from BSCCO compounds with high J{sub c} at low temperatures, but which are degraded severely at temperatures of interest. This problem is associated with thermally activated motion of magnetic flux lines in BSCCO. Reducing these dc losses at higher temperatures will require a high density of microscopic defects that will pin flux lines and inhibit their motion. Recently it was shown that optimum defects can be produced by small tracks formed by passage of energetic heavy ions. Such defects result when Bi is bombarded with high energy protons. The longer range of protons in matter suggests the possibility of application to tape conductors. AC losses are a major limitation in many applications of superconductivity such as power transmission. The improved pinning of flux lines reduces ac losses, but optimization also involves other factors. Measuring and characterizing these losses with respect to material parameters and conductor design is essential to successful development of ac devices.

Physical Description

17 p.

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INIS; OSTI as DE96014578

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  • Other Information: PBD: [1996]

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  • Other: DE96014578
  • Report No.: LA-UR--96-2832
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/378227 | External Link
  • Office of Scientific & Technical Information Report Number: 378227
  • Archival Resource Key: ark:/67531/metadc686403

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • September 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 1, 2015, 12:12 p.m.

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Peterson, D. E.; Maley, M. P.; Boulaevskii, L.; Willis, J. O.; Coulter, J. Y.; Ullmann, J. L. et al. High-temperature superconducting conductors and cables, report, September 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc686403/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.