Title :
Progress in development of KSTAR ICRF system
Author :
Hong, B.G. ; Bae, Y.D. ; Hwang, C.K. ; Jeong, S.U. ; Kwak, J.G. ; Yoon, Jong Shik
Author_Institution :
Korea Atomic Energy Res. Inst., Daejeon, South Korea
Abstract :
Summary form only given, as follows. The ICRF system for the KSTAR tokamak is being developed to support long pulse, high /spl beta/s advanced tokamak fusion physics experiments. The system has been designed to operate for long pulse lengths up to 300 sec and to provide a control function including current drive arid profile control. The ICRF system provides heating for the plasmas, centrally peaked current drive, and off-axis current drive using mode-conversion for various operating scenarios over a range of magnetic fields with the frequency range of 25-60 MHz. The system will deliver 6 MW of RP power to the plasma using a single four-strap antenna mounted in a mid-plane port and will be capable of 300 sec operation with 12 MW of RF power through two antennas located in adjacent ports. The capability of changing the current drive efficiency to control the current density profile is provided by changing the phasing between the antenna strap currents during operation.
Keywords :
Tokamak devices; fusion reactor design; fusion reactor operation; plasma radiofrequency heating; 12 MW; 6 MW; ICRF system; KSTAR tokamak; centrally peaked current drive; current drive control; four-strap antenna; long pulse high /spl beta/s fusion; mode-conversion; off-axis current drive; profile control; prototype antenna; vacuum feedthrough; Ceramics; Cooling; Laser excitation; Plasma density; Prototypes; Radio frequency; Seals; Testing; Tokamaks; Voltage;
Conference_Titel :
Plasma Science, 2003. ICOPS 2003. IEEE Conference Record - Abstracts. The 30th International Conference on
Conference_Location :
Jeju, South Korea
Print_ISBN :
0-7803-7911-X
DOI :
10.1109/PLASMA.2003.1229022
