Estimate of thermoelastic heat production from superconducting composites in pulsed poloidal coil systems
In the design of the cryogenic system and superconducting magnets for the poloidal field system in a Tokamak, it is important to have an accurate estimate of the heat produced in superconducting magnets as a result of rapidly changing magnetic fields. A computer code, PLASS (pulsed losses in axisymmetric superconducting solenoids), was written to estimate the contributions to the heat production from superconductor hysteresis losses, superconductor coupling losses, stabilizing material eddy current losses and structural material eddy current losses. Recently, it was shown that thermoelastic dissipation in superconducting composites can contribute as much to heat production as the other loss mechanisms mentioned above. A modification of PLASS is discussed which takes into consideration thermoelastic dissipation in superconducting composites. A comparison between superconductor thermoelastic dissipation and the other superconductor loss mechanisms is presented.
Presented at 2nd ANS Topical Meeting on the Technol. of Controlled Nucl. Fusion
- Pub Date:
- November 1976
- Heat Sources;
- Magnetic Fields;
- Nuclear and High-Energy Physics