skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Develop and test an internally cooled, cabled superconductor (ICCS) for large scale MHD magnets

Abstract

The work conducted under DOE/PETC Contract DE-AC22-84PC70512 has included four principal tasks, (1) development of a Design Requirements Definition for a retrofit MHD magnet system, (2) analysis of an internally cooled, cabled superconductor (ICCS) to use in that design, (3) design of an experiment to test a subscale version of that conductor, which is a NbTi, copper stabilized superconductor, and (4) proof-of-concept testing of the conductor. The program was carried forth through the third task with very successful development and test of a conventional ICCS conductor with 27 multifilamentary copper-superconductor composite strands and a new concept conductor in which, in each triplet, two strands were pure copper and the third strand was a multifilamentary composite. In reviewing the magnet design and the premises for the conductor design it became obvious that, since the principal source of perturbation in MHD magnets derives from slippage between coils, or between turns in a coil, thereby producing frictional heat which must flow through the conductor sheath and the helium to the superconductor strands, an extra barrier might be highly effective in enhancing magnet stability and protection. This concept was developed and a sample conductor manufactured and tested in comparison with an identical conductor lackingmore » such an additional barrier. Results of these conductor tests confirm the potential value of such a barrier. As the work of tasks 1 through 3 has been reported in detail in quarterly and semiannual reports, as well as in special reports prepared throughout the course of this project, this report reviews early work briefly and then discusses this last phase in great detail. 8 refs., 36 figs.« less

Authors:
; ;
Publication Date:
Research Org.:
Massachusetts Inst. of Tech., Cambridge, MA (USA). Plasma Fusion Center
Sponsoring Org.:
DOE/FE
OSTI Identifier:
6301454
Report Number(s):
DOE/PC/70512-16; PFC/RR-90-4
ON: DE91005536
DOE Contract Number:  
AC22-84PC70512
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; COAL-FIRED MHD GENERATORS; SUPERCONDUCTING MAGNETS; OPEN-CYCLE MHD GENERATORS; RESEARCH PROGRAMS; DESIGN; HEAT TRANSFER; MANUFACTURING; NIOBIUM ALLOYS; PERFORMANCE TESTING; PROGRESS REPORT; SPECIFICATIONS; STORED ENERGY; SUPERCONDUCTING COILS; SUPERCONDUCTING COMPOSITES; TECHNOLOGY TRANSFER; TITANIUM ALLOYS; WEIGHT; ALLOYS; COMPOSITE MATERIALS; DIRECT ENERGY CONVERTERS; DOCUMENT TYPES; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; ENERGY; ENERGY TRANSFER; EQUIPMENT; MAGNETS; MATERIALS; MHD GENERATORS; PHYSICAL PROPERTIES; SUPERCONDUCTING DEVICES; TESTING; THERMODYNAMIC PROPERTIES; 300103* - MHD Generators- Materials, Components, & Auxiliaries

Citation Formats

Marston, P G, Hale, J R, and Dawson, A M. Develop and test an internally cooled, cabled superconductor (ICCS) for large scale MHD magnets. United States: N. p., 1990. Web. doi:10.2172/6301454.
Marston, P G, Hale, J R, & Dawson, A M. Develop and test an internally cooled, cabled superconductor (ICCS) for large scale MHD magnets. United States. https://doi.org/10.2172/6301454
Marston, P G, Hale, J R, and Dawson, A M. 1990. "Develop and test an internally cooled, cabled superconductor (ICCS) for large scale MHD magnets". United States. https://doi.org/10.2172/6301454. https://www.osti.gov/servlets/purl/6301454.
@article{osti_6301454,
title = {Develop and test an internally cooled, cabled superconductor (ICCS) for large scale MHD magnets},
author = {Marston, P G and Hale, J R and Dawson, A M},
abstractNote = {The work conducted under DOE/PETC Contract DE-AC22-84PC70512 has included four principal tasks, (1) development of a Design Requirements Definition for a retrofit MHD magnet system, (2) analysis of an internally cooled, cabled superconductor (ICCS) to use in that design, (3) design of an experiment to test a subscale version of that conductor, which is a NbTi, copper stabilized superconductor, and (4) proof-of-concept testing of the conductor. The program was carried forth through the third task with very successful development and test of a conventional ICCS conductor with 27 multifilamentary copper-superconductor composite strands and a new concept conductor in which, in each triplet, two strands were pure copper and the third strand was a multifilamentary composite. In reviewing the magnet design and the premises for the conductor design it became obvious that, since the principal source of perturbation in MHD magnets derives from slippage between coils, or between turns in a coil, thereby producing frictional heat which must flow through the conductor sheath and the helium to the superconductor strands, an extra barrier might be highly effective in enhancing magnet stability and protection. This concept was developed and a sample conductor manufactured and tested in comparison with an identical conductor lacking such an additional barrier. Results of these conductor tests confirm the potential value of such a barrier. As the work of tasks 1 through 3 has been reported in detail in quarterly and semiannual reports, as well as in special reports prepared throughout the course of this project, this report reviews early work briefly and then discusses this last phase in great detail. 8 refs., 36 figs.},
doi = {10.2172/6301454},
url = {https://www.osti.gov/biblio/6301454}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 1990},
month = {Mon Apr 30 00:00:00 EDT 1990}
}