A study on stability criterion for cryocooler-operating HTS coils

냉동기운전 고온초전도코일의 안정성평가기준에 관한 연구

In this paper, the stability criterion for cryocooler-cooled high-temperature superconducting (HTS) coils is discussed. We choose the current, Itr at which "thermal runaway" occurs, as a stability criterion and adopt the relationship between the cooling power of GM cryocooler and the heat generation in coil system to evaluate Itr. We also investigate the transient behavior during a quench process in HTS coils by a newly developed FEM computer program.