27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Overview of the Present Progress on the Superconducting Magnet System of CFETR-PhaseII

30 Aug 2017, 15:00
15m
G102-103 Room

G102-103 Room

Regular 15 minutes Oral Presentation B1 - Superconducting Magnets for Fusion Wed-Af-Or22

Speaker

Jinxing Zheng (Institute of Plasma Physics, Chinese Academy of Sciences)

Description

CFETR (China Fusion Engineering Test Reactor) concept design work was started in 2012. It is developed in two stage. CFETR-Phase I is designed with major radius R=5.7m, minor radius a=1.6m and magnetic field at plasma region BT=4-5T. 16 toroidal field coils and 6 central solenoid coils were designed by Nb3Sn CICC with maximum operation current of 64 kA and 50 kA, respectively. Three types of plasma equilibrium shape was designed as ITER-like single null, super-X and snowflake. The maximum flux provided by central solenoid is designed as 180 volt second. However, in order to get much high operation parameters such as steady-state operation, particle and heat exhaust, disruption mitigation and avoidance, ELM control, and material damage by high heat flux and neutron, the superconducting magnet system of CFETR-phase II has been updated based on the larger machine with R = 6.7m, a=2.0m, BT= 6-7T. With this new design, over 1GW fusion power can be achieved and advanced plasma performance can be obtained. In consideration of the maximum magnetic field of TF coils of CFETR-phase II, high performance of Nb3Sn CICC magnet was designed which can withstand 14-15 T. Besides, in order to save the space for blanket system and get much high flux, high temperature superconducting Bi-2212 magnet with better current carrying performance under high field is supposed to be employed for CS coils of CFETR-phase II. The HTS CS coils can provide a high voltage second of about 480V•s and the maximum magnetic field is about 17.5T. In addition, Bi-2212 CICC conductor sample was tested at 4.2 K with critical current of 26.6 kA under its self-field.

Submitters Country China

Primary authors

Jinxing Zheng (Institute of Plasma Physics, Chinese Academy of Sciences) Prof. Song Yuntao (Institute of Plasma Physics, Chinese Academy of Sciences) Dr Liu Xufeng (Institute of Plasma Physics, Chinese Academy of Sciences) Prof. Li Jiangang (Institute of Plasma Physics, Chinese Academy of Sciences) Prof. Wan Yuanxi (Institute of Plasma Physics, Chinese Academy of Sciences) Dr Lu Kun (Institute of Plasma Physics, Chinese Academy of Sciences) Dr Liu Huajun (Institute of Plasma Physics, Chinese Academy of Sciences) Dr Qin Jingang (Institute of Plasma Physics, Chinese Academy of Sciences)

Presentation Materials