Title :
R&D on 52-kA HTS Current Lead at ASIPP
Author :
Tingzhi Zhou ; Kaizhong Ding ; Chenlian Liu ; Yanfang Bi ; Yuntao Song
Author_Institution :
Inst. of Plasma Phys., Hefei, China
Abstract :
The Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) is experienced in the design and fabrication of high-temperature superconductor (HTS) current leads such as those successfully used in the Experimental Advanced Superconducting (EAST) Tokamak. The aim of the 52-kA trial lead was to develop a prototype for the leads supplying the poloidal field and central solenoid magnets of ITER. This lead differs from former HTS current leads and from another trial (68 kA) lead developed in parallel for the toroidal field magnet, in that it features a foil-type heat exchanger, a helium-cooled transition section, and a binary shunt made of stainless steel and phosphor bronze. The 52-kA trial lead was fabricated and tested in the EAST Tokamak facility. Results of the test are presented. An analysis of these results indicates that the design concepts introduced are validated. The test also served to validate the HTS stacks that equipped the lead. These were supplied by InnoST.
Keywords :
Tokamak devices; heat exchangers; high-temperature superconductors; superconducting devices; Experimental Advanced Superconducting Tokamak; HTS stacks; ITER; binary shunt; central solenoid magnet; current 52 kA; foil-type heat exchanger; helium-cooled transition section; high-temperature superconductor current leads; phosphor bronze; poloidal field magnet; stainless steel; toroidal field magnet; Copper; Heating; High-temperature superconductors; Insulation; Joints; Lead; Superconducting transition temperature; Current lead; Tokamak; current lead; heat exchanger; superconductor;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2015.2396938
