Conveners
M3Or1B: Thermal, Electrical and Magnetic Properties, Radiation, and Degradation
- James Tuttle (NASA Goddard Space Flight Center)
- Griffin Bradford (Applied Superconductivity Center)
- Introduction
Insulating materials used in superconducting magnets for fusion reactors are exposed to radiation at the cryogenic temperature of liquid helium temperature. ITER, an experimental nuclear fusion reactor, uses glass fiber reinforced plastic (GFRP), which is a 3:2 mixture of epoxy resin (EP) and cyanate ester (CE) (40 wt.% in CE content) with excellent radiation resistance, as...
Due to the high current carrying performance under high field and low temperature (<20 K), REBCO tapes exhibit a strong potential of future fusion magnets application. The characteristics, such as anisotropic and multi-layered structure, the stress/strain sensitivity of critical current carrying performance, make them not easy for CICC development, which is very important to achieve practical...
Advancements are required in superconducting magnets for safe, reliable, economic, and environmentally benign operation in high-energy radiation environments such as nuclear fusion devices. Degradation of electric insulation, when exposed to high levels of radiation or high temperature of fusion devices, must be minimal. Innosense LLC (ISL) in collaboration with Florida State University and...
Current sharing is a critical self-protecting mechanism for non-insulating coils and multi-strand cables. Current sharing can be controlled by the contact surface resistance between superconductors. We have found that the contact resistance of REBCO coated conductor can be modified by applying press, sintering, and metal-plating. In our previous work, we conducted steady-state FEM analysis and...
