scholarly journals Simulation of injector dynamics during steady inductive helicity injection current drive in the HIT-SI experiment

2015 ◽  
Vol 22 (4) ◽  
pp. 042505 ◽  
Author(s):  
C. Hansen ◽  
G. Marklin ◽  
B. Victor ◽  
C. Akcay ◽  
T. Jarboe
Keyword(s):  
Current Drive ◽  
Injection Current ◽  
Helicity Injection ◽  
Injector Dynamics ◽  
Steady Inductive 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

Point-Source Helicity Injection Current Drive System for the Pegasus Toroidal Experiment

2008 ◽  
Vol 28 (2) ◽  
pp. 203-207 ◽  
Author(s):  
A. J. Redd ◽  
D. J. Battaglia ◽  
M. W. Bongard ◽  
R. J. Fonck ◽  
E. T. Hinson ◽  
...  
Keyword(s):  
Point Source ◽  
Current Drive ◽  
Drive System ◽  
Injection Current ◽  
Helicity Injection

Tokamak formation and sustainment by coaxial helicity injection current drive

1994 ◽  
Vol 34 (8) ◽  
pp. 1111-1119 ◽  
Author(s):  
B.A Nelson ◽  
T.R Jarboe ◽  
A.K Martin ◽  
C.L Painter
Keyword(s):  
Current Drive ◽  
Injection Current ◽  
Helicity Injection ◽  
Coaxial Helicity Injection

Advances in Steady Inductive Helicity Injection for Plasma Startup and Toroidal Current Drive

2012 ◽  
Vol 132 (7) ◽  
pp. 472-476 ◽  
Author(s):  
Brian S. Victor ◽  
Thomas R. Jarboe ◽  
Aaron C. Hossack ◽  
David A. Ennis ◽  
Brian A. Nelson ◽  
...  
Keyword(s):  
Current Drive ◽  
Helicity Injection ◽  
Steady Inductive 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.

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