Title :
Characteristic performance of the ICRF heating in the divertor plasma simulator NAGDIS-II
Author :
Imai, T. ; Uesugi, Y. ; Takarnura, S.
Author_Institution :
Nagoya Univ., Aichi, Japan
Abstract :
This paper presents an experiment about high heat flux plasma generation with ICRF heating in a linear divertor simulator, NAGDIS-II. Main objective of present work is to produce high heat flux plasmas for divertor plasma simulation experiments. High heat flux (/spl sim/0.9 MW/m/sup 2/) plasmas were produced by injecting /spl sim/6 kW RF power, whose parameters were the ion temperature of /spl sim/10 eV, the electron temperature of /spl sim/10 eV and plasma density of /spl sim/10/sup 19/ m/sup -3/. In this experiment, two RF inverter power supplies using Static Induction Transistor (SIT) were employed to excite the Ion Cyclotron Slow Waves (ICSW) in a plasma. Each power supply can generate the RF power of /spl sim/15 kW at 0.25/spl sim/1.7 MHz. Waves are excited by phased loop antenna array. By measuring the loss power during RF heating, the flow channels of the radiated power in NAGDIS-II are identified.
Keywords :
plasma heating; plasma radiofrequency heating; plasma simulation; plasma temperature; plasma transport processes; 0.25 to 1.7 MHz; 10 eV; 15 kW; 6 kW; ICRF heating; NAGDIS-II divertor plasma simulator; RF inverter power supplies; RF power injection; electron temperature; high heat flux plasma generation; ion cyclotron slow wave excitation; ion temperature; linear divertor simulator; plasma density; static induction transistor; Electrons; Heating; Phased arrays; Plasma density; Plasma measurements; Plasma properties; Plasma simulation; Plasma temperature; Power supplies; Radio frequency;
Conference_Titel :
Pulsed Power Plasma Science, 2001. PPPS-2001. Digest of Technical Papers
Conference_Location :
Las Vegas, NV, USA
Print_ISBN :
0-7803-7120-8
DOI :
10.1109/PPPS.2001.1001904
