Accession Number:

ADA589261

Title:

Scientific Presentations on High Temperature Superconductivity and Cryogenic Power Research from 2005-2013

Descriptive Note:

Final rept. 11 Aug 2005-11 Aug 2013

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH AEROSPACE SYSTEMS DIR

Personal Author(s):

Report Date:

2013-11-01

Pagination or Media Count:

109.0

Abstract:

This program addresses basic scientific and engineering issues related to the development of advanced high temperature superconductor HTS materials and wire conductors. Specific research topics are addressed to support Air Force applications. The goals and expected impact of this work are to reduce the weight, heat loss and volume of AF systems, and also to improve performance or enable new capabilities. As the development of HTS applications progress with time, these goals are being reached very significantly. Specific subtopics and approaches to be emphasized in this work include - Novel Superconductor Materials. Study and develop novel classes of high temperature superconductors with improved properties, especially higher transition temperature Tc and lower anisotropy, but also better intrinsic flux pinning, lower toxicity, and will lead to an ease of manufacturing in long length and useful wire shapes. - Basic Issues of YBCO Conductors. Develop properties of the Y-Ba-Cu-O YBCO superconductor for optimal performance, especially by flux pinning mechanisms but also thicker films. Development will have an emphasis on those issues that can also be useful to new superconductors developed in the first subtopic area. - AC Loss and Stability. Determine and minimize ac losses experienced by advanced wires conductor and devices in a high power generator with consideration of stability issues, and develop ac-tolerant architecture and composite materials. This is an equally theoretical and experimental effort that is relevant to any newly discovered superconductor or the YBCO superconductor. - Fundamental Research Topics of Superconductors. Study of fundamental research issues, such as heat dissipation mechanisms in complex grain boundaries, the effects of edge barrier pinning on multifilament or multilayer conductors, ac loss mechanisms especially in fine filament wires and at high frequencies from 200 to 1200 hz.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE