Study on lower hybrid current drive efficiency at high density towards long-pulse regimes in Experimental Advanced Superconducting Tokamak

2014 ◽  
Vol 21 (6) ◽  
pp. 062510 ◽  
Author(s):  
M. H. Li ◽  
B. J. Ding ◽  
J. Z. Zhang ◽  
K. F. Gan ◽  
H. Q. Wang ◽  
...  
Keyword(s):  
Current Drive ◽  
High Density ◽  
Lower Hybrid ◽  
Lower Hybrid Current Drive ◽  
Long Pulse ◽  
Superconducting Tokamak

scholarly journals Studies of challenge in lower hybrid current drive capability at high density regime in experimental advanced superconducting tokamak

2017 ◽  
Vol 83 (1) ◽  
Author(s):  
B. J. Ding ◽  
M. H. Li ◽  
Y. C. Li ◽  
M. Wang ◽  
F. K. Liu ◽  
...  
Keyword(s):  
Current Drive ◽  
High Density ◽  
Lower Hybrid ◽  
Lower Hybrid Wave ◽  
Cyclic Operation ◽  
Lower Hybrid Current Drive ◽  
Plasma Coupling ◽  
Superconducting Tokamak ◽  
Confinement Mode ◽  
Density Regime

Aiming at a fusion reactor, two issues must be solved for the lower hybrid current drive (LHCD), namely good lower hybrid wave (LHW)–plasma coupling and effective current drive at high density. For this goal, efforts have been made to improve LHW–plasma coupling and current drive capability at high density in experimental advanced superconducting tokamak (EAST). LHW–plasma coupling is improved by means of local gas puffing and gas puffing from the electron side is taken as a routine way for EAST to operate with LHCD. Studies of high density experiments suggest that low recycling and high lower hybrid (LH) frequency are preferred for LHCD experiments at high density, consistent with previous results in other machines. With the combination of 2.45 GHz and 4.6 GHz LH waves, a repeatable high confinement mode plasma with maximum density up to $4.5\times 10^{19}~\text{m}^{-3}$ was obtained by LHCD in EAST. In addition, in the first stage of LHCD cyclic operation, an alternative candidate for more economical fusion reactors has been demonstrated in EAST and further work will be continued.

scholarly journals Lower hybrid current drive experiments in support of high confinement long pulse operation in EAST

2017 ◽  
Vol 157 ◽  
pp. 03011 ◽  
Author(s):  
Annika Ekedahl ◽  
Bojiang Ding ◽  
Xianzu Gong ◽  
Marc Goniche ◽  
Miaohui Li ◽  
...  
Keyword(s):  
Current Drive ◽  
Lower Hybrid ◽  
Pulse Operation ◽  
Lower Hybrid Current Drive ◽  
Long Pulse

scholarly journals Observation of Efficient Lower Hybrid Current Drive at High Density in Diverted Plasmas on the Alcator C-Mod Tokamak

2018 ◽  
Vol 121 (5) ◽  
Author(s):  
S. G. Baek ◽  
G. M. Wallace ◽  
P. T. Bonoli ◽  
D. Brunner ◽  
I. C. Faust ◽  
...  
Keyword(s):  
Current Drive ◽  
High Density ◽  
Lower Hybrid ◽  
Lower Hybrid Current Drive

Spectral broadening of parametric instability in lower hybrid current drive at a high density

2014 ◽  
Vol 54 (4) ◽  
pp. 043002 ◽  
Author(s):  
R. Cesario ◽  
L. Amicucci ◽  
A. Cardinali ◽  
C. Castaldo ◽  
M. Marinucci ◽  
...  
Keyword(s):  
Parametric Instability ◽  
Current Drive ◽  
High Density ◽  
Lower Hybrid ◽  
Spectral Broadening ◽  
Lower Hybrid Current Drive

Lower hybrid current drive in FTU high density shear reversed discharges

1997 ◽  
Author(s):  
A. A. Tuccillo ◽  
E. Barbato ◽  
F. Crisanti ◽  
L. Panaccione ◽  
V. Pericoli ◽  
...  
Keyword(s):  
Current Drive ◽  
High Density ◽  
Lower Hybrid ◽  
Lower Hybrid Current Drive

Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak

1999 ◽  
Vol 39 (11Y) ◽  
pp. 1769-1774 ◽  
Author(s):  
Guangli Kuang ◽  
Yuexiou Liu ◽  
Jiafang Shan ◽  
Weihua Xu ◽  
Xiangqin Zhang ◽  
...  
Keyword(s):  
Current Drive ◽  
Lower Hybrid ◽  
Lower Hybrid Current Drive ◽  
Improved Performance ◽  
Superconducting Tokamak

scholarly journals Advances in Lower Hybrid Current Drive for Tokamak Long Pulse Operation: Technology and Physics

2012 ◽  
Vol 7 (0) ◽  
pp. 2502140-2502140 ◽  
Author(s):  
Gia Tuong HOANG ◽  
Léna DELPECH ◽  
Annika EKEDAHL ◽  
Young-soon BAE ◽  
Joelle ACHARD ◽  
...  
Keyword(s):  
Current Drive ◽  
Lower Hybrid ◽  
Pulse Operation ◽  
Lower Hybrid Current Drive ◽  
Long Pulse
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