scholarly journals MHD simulations of DC helicity injection for current drive in tokamaks

1994 ◽  
Author(s):  
C.R. Sovinec ◽  
S.C. Prager
Keyword(s):  
Current Drive ◽  
Helicity Injection ◽  
Mhd Simulations ◽  
Dc Helicity Injection

scholarly journals Initiation and sustainment of tokamak plasmas with local helicity injection as the majority current drive

2018 ◽  
Vol 58 (9) ◽  
pp. 096002 ◽  
Author(s):  
J.M. Perry ◽  
G.M. Bodner ◽  
M.W. Bongard ◽  
M.G. Burke ◽  
R.J. Fonck ◽  
...  
Keyword(s):  
Current Drive ◽  
Tokamak Plasmas ◽  
Helicity Injection

RF current drive with magnetic helicity injection

1985 ◽  
Vol 33 (2) ◽  
pp. 257-264 ◽  
Author(s):  
D. K. Bhadra ◽  
C. Chu
Keyword(s):  
Steady State ◽  
Plasma Density ◽  
Electromagnetic Waves ◽  
Current Drive ◽  
Magnetic Helicity ◽  
Finite Frequency ◽  
Helicity Injection ◽  
Steady State Current ◽  
External Injection ◽  
Frequency Current

External injection of magnetic helicity into a plasma may be possible through the introduction of appropriately polarized electromagnetic waves. A concept of steady-state current-drive is presented, based on the validity of conservation of helicity (appropriately defined for finite frequency processes). It is shown that such external injection of helicity can maintain a steady-state current by compensating the volt-seconds consumed through plasma resistivity. Such a mechanism, if experimentally successful, is particularly interesting at high densities because the efficiency of the process does not depend on plasma density, as opposed to other radio-frequency current-drive techniques.

Steady-state tokamak discharge via dc helicity injection

1987 ◽  
Vol 59 (19) ◽  
pp. 2165-2168 ◽  
Author(s):  
M. Ono ◽  
G. J. Greene ◽  
D. Darrow ◽  
C. Forest ◽  
H. Park ◽  
...  
Keyword(s):  
Steady State ◽  
Helicity Injection ◽  
Dc Helicity Injection

Low Aspect Ratio Tokamak Formation and Sustainment by Coaxial Helicity Injection Current Drive

1995 ◽  
Vol 27 (3T) ◽  
pp. 333-336
Author(s):  
B. A. Nelson ◽  
T. R. Jarboe ◽  
D. J. Orvis ◽  
A. K. Martin ◽  
J. Xie ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Current Drive ◽  
Injection Current ◽  
Helicity Injection ◽  
Low Aspect Ratio ◽  
Coaxial Helicity Injection

Transport implications of current drive by magnetic helicity injection

2001 ◽  
Vol 8 (11) ◽  
pp. 4839-4848 ◽  
Author(s):  
Ronald W. Moses ◽  
Richard A. Gerwin ◽  
Kurt F. Schoenberg
Keyword(s):  
Current Drive ◽  
Magnetic Helicity ◽  
Helicity Injection
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