Design of a high power long pulse folded coaxial spiral transmission line

2009 ◽  
Author(s):  
Y. In ◽  
H.H. Zhong ◽  
X.P. Zhang ◽  
J.L. Liu ◽  
J.H. Yang ◽  
...  
Keyword(s):  
Transmission Line ◽  
High Power ◽  
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.

Load resilient transmission line system for long-pulse, high-power ICRF operation at KSTAR

2014 ◽  
Author(s):  
H. J. Kim ◽  
S. J. Wang ◽  
Y. S. Bae ◽  
H. L. Yang ◽  
J. G. Kwak ◽  
...  
Keyword(s):  
Transmission Line ◽  
High Power ◽  
Line System ◽  
Long Pulse

Experimental study of a 28 GHz high-power long-pulse cyclotron autoresonance maser oscillator

1993 ◽  
Vol 71 (13) ◽  
pp. 2018-2021 ◽  
Author(s):  
S. Alberti ◽  
B. G. Danly ◽  
G. Gulotta ◽  
E. Giguet ◽  
T. Kimura ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Power ◽  
Cyclotron Autoresonance Maser ◽  
Long Pulse

Long-Pulse, High-Power Free-Electron Laser with No External Beam Focusing

1984 ◽  
Vol 53 (18) ◽  
pp. 1728-1731 ◽  
Author(s):  
J. A. Pasour ◽  
R. F. Lucey ◽  
C. A. Kapetanakos
Keyword(s):  
High Power ◽  
Free Electron ◽  
Free Electron Laser ◽  
External Beam ◽  
Beam Focusing ◽  
Long Pulse

Investigation of an ${X}$ -Band Long Pulse High-Power High-Gain Coaxial Multibeam Relativistic Klystron Amplifier

2019 ◽  
Vol 66 (1) ◽  
pp. 722-728 ◽  
Author(s):  
Zhenbang Liu ◽  
Hua Huang ◽  
Xiao Jin ◽  
Shifeng Li ◽  
Tengfang Wang ◽  
...  
Keyword(s):  
High Power ◽  
High Gain ◽  
Long Pulse ◽  
Relativistic Klystron

Innovation on high-power long-pulse gyrotrons

2011 ◽  
Vol 53 (12) ◽  
pp. 124002 ◽  
Author(s):  
Alexander Litvak ◽  
Keishi Sakamoto ◽  
Manfred Thumm
Keyword(s):  
High Power ◽  
Long Pulse

Short Length High-Power Water Filled Coaxial Transmission Line for Long Pulses

2018 ◽  
Author(s):  
Artem Kuskov ◽  
Joe Chen ◽  
Maxwell Lerma ◽  
Thomas Schmidt ◽  
Salvador Portillo
Keyword(s):  
Transmission Line ◽  
High Power ◽  
Short Length
Sign in / Sign up

Export Citation Format

Share Document