Title :
High power-long pulse transmission experiment of torus diamond window for ITER EC H&CD system
Author :
Takahashi, K. ; Kajiwara, K. ; Oda, Y. ; Sakamoto, K.
Author_Institution :
Japan Atomic Energy Agency (JAEA), Naka, Japan
Abstract :
A torus diamond window prototype for an ITER electron cyclotron heating and current drive (EC H&CD) system was fabricated based on the latest design. It was installed in the ITER relevant transmission line and high power-long pulse experiment was carried out. Transmission of 740kW-100sec and was performed. It was observed that the cooling water temperature was stabilized and significant low loss tangent, 5.54 × 10-6 was estimated. The results promise that our torus diamond window is feasible to high power-long pulse transmission.
Keywords :
cooling; plasma radiofrequency heating; transmission lines; ITER EC H&CD system; ITER electron cyclotron heating; ITER relevant transmission line; cooling water temperature; current drive system; high power-long pulse transmission experiment; low loss tangent; power-long pulse experiment; torus diamond window prototype; Diamond-like carbon; Optical surface waves; Optical waveguides; Power transmission lines; Prototypes; Surface waves; Transmission line measurements;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2027
DOI :
10.1109/irmmw-THz.2011.6104799
