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Title: Design of 12-T Yin-Yang magnets operating in subcooled, superfluid helium. [Nb-Ti and Nb/sub 3/Sn]

Abstract

A conceptual design study of a large 12-T yin-yang pair of coils, typical of the plug coils envisioned for a tandem-mirror facility to follow MFTF, has been completed. Because of its larger size and field strength, the magnetic forces are much greater than those experienced on MFTF. The main purpose of this study, therefore, is to assess the feasibility of such a device, paying particular attention to mechanical stress and conductor strain. The conductor proposed operates at 15.6 kA and consists of a rectangular half-hard copper stabilizer with a Nb-Ti insert in the low-field regions and Nb/sub 3/Sn in the high field. The coil is divided into four sections in the longitudinal direction, with steel substructure to limit the winding stress to an acceptable level. The conductor is cryostatically stabilized in superfluid He at 1.8K and 1.2 atm, with an operating heat flux of 0.8 W.cm/sup -2/.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA); General Dynamics/Convair, San Diego, CA (USA)
OSTI Identifier:
5922939
Report Number(s):
UCRL-85957; CONF-811040-12
ON: DE82001059; TRN: 82-001448
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 9. symposium on engineering problems of fusion research, Chicago, IL, USA, 26 Oct 1981
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; MFTF DEVICES; SUPERCONDUCTING MAGNETS; DESIGN; MAGNET COILS; NIOBIUM ALLOYS; SIZE; STRAINS; STRESSES; TIN ALLOYS; TITANIUM ALLOYS; ALLOYS; ELECTRIC COILS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETIC MIRRORS; MAGNETS; OPEN PLASMA DEVICES; SUPERCONDUCTING DEVICES; THERMONUCLEAR DEVICES; 700202* - Fusion Power Plant Technology- Magnet Coils & Fields; 420201 - Engineering- Cryogenic Equipment & Devices

Citation Formats

Cornish, D N, Hoard, R W, and Baldi, R. Design of 12-T Yin-Yang magnets operating in subcooled, superfluid helium. [Nb-Ti and Nb/sub 3/Sn]. United States: N. p., 1981. Web.
Cornish, D N, Hoard, R W, & Baldi, R. Design of 12-T Yin-Yang magnets operating in subcooled, superfluid helium. [Nb-Ti and Nb/sub 3/Sn]. United States.
Cornish, D N, Hoard, R W, and Baldi, R. 1981. "Design of 12-T Yin-Yang magnets operating in subcooled, superfluid helium. [Nb-Ti and Nb/sub 3/Sn]". United States. https://www.osti.gov/servlets/purl/5922939.
@article{osti_5922939,
title = {Design of 12-T Yin-Yang magnets operating in subcooled, superfluid helium. [Nb-Ti and Nb/sub 3/Sn]},
author = {Cornish, D N and Hoard, R W and Baldi, R},
abstractNote = {A conceptual design study of a large 12-T yin-yang pair of coils, typical of the plug coils envisioned for a tandem-mirror facility to follow MFTF, has been completed. Because of its larger size and field strength, the magnetic forces are much greater than those experienced on MFTF. The main purpose of this study, therefore, is to assess the feasibility of such a device, paying particular attention to mechanical stress and conductor strain. The conductor proposed operates at 15.6 kA and consists of a rectangular half-hard copper stabilizer with a Nb-Ti insert in the low-field regions and Nb/sub 3/Sn in the high field. The coil is divided into four sections in the longitudinal direction, with steel substructure to limit the winding stress to an acceptable level. The conductor is cryostatically stabilized in superfluid He at 1.8K and 1.2 atm, with an operating heat flux of 0.8 W.cm/sup -2/.},
doi = {},
url = {https://www.osti.gov/biblio/5922939}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 09 00:00:00 EDT 1981},
month = {Fri Oct 09 00:00:00 EDT 1981}
}

Conference:
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