R&amp;D Towards HTS Current Leads for ITER

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.

Section: B Structure Designmentioning

confidence: 99%

R&D on 52-kA HTS Current Lead at ASIPP

Zhou

Ding

Liu

et al. 2015

“…The Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) developed a 68-kA BSCCO 2223 HTS current lead [52] for the international thermonuclear experimental reactor (ITER) and applied 13 pairs of 16-kA HTS current leads for the experimental advanced superconducting Tokamak (EAST), which can save 2/3 of refrigeration power consumption and reduce cooling equipment substantially compared with conventional copper current leads. Now the HTS current leads, rated current less than 0.5 kA, are widely used for small-and mid-scale LTS magnets for magnetic separators, high-power microwave emitting, crystal growing and SMES; and for HTS magnets in ship motors and SMES.…”

Section: Hts Current Leadmentioning

confidence: 99%

Enabling High-Temperature Superconducting Technologies Toward Practical Applications

Jin

Xin

Wang

et al. 2014

This work covers the high-temperature superconducting (HTS) technologies based on the highlights in recent achievements in the applied HTS field in China. Its comprehensive coverage includes practical HTS material manufacturing and characterization, large-scale applications, and electronic applications. The applied HTS technologies have been well enabled to build applicable devices, and their characteristics have been well verified in the HTS devices developed to be industrialized for practical applications. The highlighted HTS devices and their performance details reveal the trend and the necessary improvement required to reach the goal of industrial applications of HTS technologies. Index Terms-High-temperature (T c ) superconductor (HTS), HTS cable, HTS electronic device, HTS fault-current limiter, HTS large-scale application, HTS magnet, HTS measurement technique, HTS motor, HTS MRI, HTS strong current device, HTS transformer, HTS 2G wire. J. X. Jin is with the

“…In addition, the Chinese Academy of Science (ASIPP) is responsible for the procurement of all current leads to be used for ITER. From 2008 to 2010, ASIPP accomplished the development and testing of various trial leads rated at 68, 52, and 10 kA, respectively for ITER [5]- [7]. Test results showed the maximum current capacity of the 68-kA trial leads reached 90 kA.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of 16-kA HTS Current Lead for HMFL 45-T Magnet

Zhou

Lü

Ding

et al. 2015

The High Magnetic Field Laboratory developed a 45-T hybrid magnet. To test this magnet, a new pair of hightemperature superconducting current leads rated at 16 kA were developed. This paper addresses the design and test of those current leads. To minimize heat loads at the cold end, Bi-2223 high-temperature superconductors were used. The foil-type main heat exchanger is cooled by 77-K liquid nitrogen (LN 2 ) and gas nitrogen (GN 2 ). The busbar for International Thermonuclear Experimental Reactor, an Nb-Ti low-temperature superconducting (LTS) cable, is used to connect the magnet coil for easy access to the LTS cable. The insulation on the current lead was designed on the test target of 10 kV.