Title :
Test of KSTAR ICRF components for long-pulse operation
Author :
Hong, B.G. ; Bae, Y.D. ; Hwang, C.K. ; Jung, S.U. ; Kwak, J.G. ; Wang, S.J. ; Yoon, J.S.
Author_Institution :
Korea Atomic Energy Res. Inst., Daejeon, South Korea
Abstract :
The high power ICRF components have been developed for long pulse operation of KSTAR tokamak, A water-cooled, high power density (∼ 10 MW/m2) ICRF antenna, a water-cooled co-axial transmission line with the special connector for water sealing while maintaining electrical contact, a vacuum feedthrough for transmission of 1 MW RF power which has two alumina (Al2O3, 97%) ceramic cylinders and O-ring seal, and a phase shifter using liquid instead of gas for insulating dielectric medium have been developed. RF tests for these components show that stable operation is possible with the peak voltage over 30 kV for long pulse up to 300 seconds.
Keywords :
Tokamak devices; plasma radiofrequency heating; plasma toroidal confinement; 1 MW; Al2O3; KSTAR ICRF components; KSTAR tokamak; O-ring seal; RF power; RF tests; ceramic cylinders; electrical contact; high power ICRF components; high power density ICRF antenna; insulating dielectric medium; long-pulse operation; peak voltage; phase shifter; vacuum feedthrough; water-cooled coaxial transmission; Antenna accessories; Antenna feeds; Connectors; Contacts; Dielectric liquids; Power transmission lines; Radio frequency; Testing; Tokamaks; Transmission line antennas;
Conference_Titel :
Fusion Engineering, 2003. 20th IEEE/NPSS Symposium on
Print_ISBN :
0-7803-7908-X
DOI :
10.1109/FUSION.2003.1426692
