Long-Pulse Improved Central Electron Confinement in the TCV Tokamak with Electron Cyclotron Heating and Current Drive

2001 ◽  
Vol 86 (8) ◽  
pp. 1530-1533 ◽  
Author(s):  
Z. A. Pietrzyk ◽  
C. Angioni ◽  
R. Behn ◽  
S. Coda ◽  
T. P. Goodman ◽  
...  
Keyword(s):  
Electron Cyclotron ◽  
Current Drive ◽  
Electron Cyclotron Heating ◽  
Electron Confinement ◽  
Long Pulse

Development of high-power, long-pulse, multi-frequency ECH/CD system for JT-60SA

2021 ◽  
Author(s):  
Takayuki Kobayashi ◽  
Hibiki Yamazaki ◽  
Shinichi Hiranai ◽  
Masayuki Sawahata ◽  
Masayuki Terakado ◽  
...  
Keyword(s):  
Transmission Line ◽  
High Power ◽  
Electron Cyclotron ◽  
Current Drive ◽  
Stable Operation ◽  
Electron Cyclotron Heating ◽  
Dummy Load ◽  
Mode Purity ◽  
Long Pulse

Abstract A gyrotron and a matching optics unit (MOU) for the multi-frequency electron cyclotron heating and current drive (ECH/CD) system in JT-60SA have been developed successfully. The gyrotron demonstrated stable operation at high powers of 1.5 MW for 5 s and 1.9 MW for 1 s at 110 GHz. To obtain high HE11 mode purity (> 90%) at the outlet of the waveguide in the ECH/CD launcher, a MOU for operating at three frequencies of 82 GHz, 110 GHz, and 138 GHz that includes three pairs of water-cooled phase correcting mirrors has been developed, which allows the mirrors to be changed without opening the evacuated MOU. The mode purity at the inlet of a dummy load in the transmission line was evaluated at high-power and an HE11 mode purity of > 90% was obtained at three frequencies.

Progress in the ITER electron cyclotron heating and current drive system design

2015 ◽  
Vol 96-97 ◽  
pp. 547-552 ◽  
Author(s):  
Toshimichi Omori ◽  
Ferran Albajar ◽  
Tullio Bonicelli ◽  
Giuseppe Carannante ◽  
Mario Cavinato ◽  
...  
Keyword(s):  
System Design ◽  
Electron Cyclotron ◽  
Current Drive ◽  
Drive System ◽  
Electron Cyclotron Heating

Enhancement of efficiency for lower hybrid current drive by electron cyclotron heating in the WT-2 tokamak

1986 ◽  
Vol 26 (1) ◽  
pp. 107-111 ◽  
Author(s):  
A. Ando ◽  
K. Ogura ◽  
H. Tanaka ◽  
M. Iida ◽  
S. Ide ◽  
...  
Keyword(s):  
Electron Cyclotron ◽  
Current Drive ◽  
Lower Hybrid ◽  
Electron Cyclotron Heating ◽  
Lower Hybrid Current Drive
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