scholarly journals Velocity-space studies of fast-ion transport at a sawtooth crash in neutral-beam heated plasmas

2012 ◽  
Vol 54 (2) ◽  
pp. 025006 ◽  
Author(s):  
C M Muscatello ◽  
W W Heidbrink ◽  
Ya I Kolesnichenko ◽  
V V Lutsenko ◽  
M A Van Zeeland ◽  
...  
Keyword(s):  
Ion Transport ◽  
Velocity Space ◽  
Neutral Beam ◽  
Fast Ion

scholarly journals Fast-ion transport and neutral beam current drive in ASDEX upgrade

2015 ◽  
Vol 55 (8) ◽  
pp. 083001 ◽  
Author(s):  
B. Geiger ◽  
M. Weiland ◽  
A.S. Jacobsen ◽  
D. Rittich ◽  
R. Dux ◽  
...  
Keyword(s):  
Ion Transport ◽  
Beam Current ◽  
Current Drive ◽  
Neutral Beam ◽  
Fast Ion

Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST

2018 ◽  
Vol 44 (10) ◽  
pp. 891-898
Author(s):  
Y. A. Zhao ◽  
◽  
X. M. Zhang ◽  
L. M. Yu ◽  
E. B. Xue ◽  
...  
Keyword(s):  
Ion Transport ◽  
Neutral Beam Injection ◽  
Neutral Beam ◽  
Beam Injection ◽  
Fast Ion

scholarly journals Inversion methods for fast-ion velocity-space tomography in fusion plasmas

2016 ◽  
Vol 58 (4) ◽  
pp. 045016 ◽  
Author(s):  
A S Jacobsen ◽  
L Stagner ◽  
M Salewski ◽  
B Geiger ◽  
W W Heidbrink ◽  
...  
Keyword(s):  
Velocity Space ◽  
Fusion Plasmas ◽  
Inversion Methods ◽  
Ion Velocity ◽  
Fast Ion

Fast ion confinement and stability in a neutral beam injected reversed field pinch

2013 ◽  
Vol 20 (5) ◽  
pp. 056102 ◽  
Author(s):  
J. K. Anderson ◽  
A. F. Almagri ◽  
D. J. Den Hartog ◽  
S. Eilerman ◽  
C. B. Forest ◽  
...  
Keyword(s):  
Neutral Beam ◽  
Reversed Field Pinch ◽  
Reversed Field ◽  
Fast Ion

Measurement of the fast ion distribution using active NPA diagnostics at the Globus-M2 spherical tokamak

2021 ◽  
Author(s):  
Nikolai Nikolaevich Bakharev ◽  
I M Balachenkov ◽  
F V Chernyshev ◽  
Vasily K Gusev ◽  
Evgeniy Kiselev ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Neutral Beam ◽  
Scanning System ◽  
Spatial Distributions ◽  
Spherical Tokamak ◽  
Ion Distribution ◽  
Fast Ion ◽  
Additional Charge

Abstract Active NPA measurements of the fast ion distribution using the neutral beam as an additional charge exchange target are discussed. Expressions for the calculation of the NPA signal based on the fast ion distribution and for the reconstruction of the fast ion distribution from the NPA signal are provided. Demonstration of the described approach is carried out on the Globus-M2 spherical tokamak, where a scanning system for the NPAs was recently installed. Main features of the active NPA application on Globus-M2 are considered. The energy and spatial distributions of fast deuterium ions at dedicated pitch angles are obtained and compared with the calculated ones. Key traits of the obtained distributions are considered and explained.

scholarly journals Fast-ion transport by Alfvén eigenmodes above a critical gradient threshold

2017 ◽  
Vol 24 (5) ◽  
pp. 056109 ◽  
Author(s):  
W. W. Heidbrink ◽  
C. S. Collins ◽  
M. Podestà ◽  
G. J. Kramer ◽  
D. C. Pace ◽  
...  
Keyword(s):  
Ion Transport ◽  
Alfven Eigenmodes ◽  
Fast Ion
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