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U.S. Department of Energy
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Ohmic-heating solenoid design utilizing forced-cooled windings

Conference ·
OSTI ID:6073867
This paper discusses the feasibility of using NbTi internally cooled cable superconductor (ICCS) in the ohmic-heating central solenoid for the fusion engineering device (FED). The ICCS conductor provides cryostable operation with liberal stability margin. The forced cooled concept has a high winding current density which reduces the size and the cost of the device. The forced-cooled concept requires complex helium manifolding, but a unique approach has been developed to solve the problem. The conductor design, the winding design, and the performance analyses are described. The solenoid is designed to operate at 8-T peak field and provides 60 MAT. The operating current for the solenoid is 21.3 kA, which is 60% of the critical current at 8 T.
Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
W-7405-ENG-26
OSTI ID:
6073867
Report Number(s):
CONF-830406-84; ON: DE83014232
Country of Publication:
United States
Language:
English