Materials Research for Hydrogen-Cooled Superconducting Power Transmission Lines. Sixth Quarterly Report, April 1, 1981-June 30, 1981

摘要

The objectives of this three-year program are to: perform dielectric breakdown and loss measurements in liquid hydrogen and liquid-hydrogen-impregnatd synthetic dielectrics at temperatures between 14 and 20 exp 0 K and at hydrostatic pressures up to 5 atmospheres and to determine the effects of dissolved impurities/additives in the liquid; and characterize the self-field and low-field superconducting properties of high-critical temperature materials at temperatures between approximately 14 and 20 exp 0 K. During the current reporting period, the following was accomplished. The construction of the dielectric test apparatus continued and the system of small electrodes was completed. Difficulties were encountered in the construction of the LH sub 2 vessels and the junction box, which have retarded their completion. Other work to be performed at the Westinghouse R and D Center on the dielectrics part of this project has been postponed indefinitely due to the shortage of funding. (ERA citation 07:007166)