scholarly journals Charge-exchange and fusion reaction measurements during compression experiments with neutral beam heating in the Tokamak Fusion Test Reactor

1986 ◽  
Author(s):  
R. Kaita ◽  
W.W. Heidbrink ◽  
G.W. Hammett ◽  
A.A. Chan ◽  
A.C. England ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Fusion Reaction ◽  
Neutral Beam ◽  
Beam Heating ◽  
Test Reactor

scholarly journals Charge exchange and fusion reaction measurements during compression experiments with neutral beam heating in the Tokamak Fusion Test Reactor

1986 ◽  
Vol 26 (7) ◽  
pp. 863-871 ◽  
Author(s):  
R. Kaita ◽  
W.W. Heidbrink ◽  
G.W. Hammett ◽  
A.A. Chan ◽  
A.C. England ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Fusion Reaction ◽  
Neutral Beam ◽  
Beam Heating ◽  
Test Reactor

The neutral beam heating system for the tokamak fusion test reactor

1985 ◽  
Vol 10-11 ◽  
pp. 478-482 ◽  
Author(s):  
L.R. Grisham ◽  
H.P. Eubank ◽  
J.H. Kamperschroer ◽  
H.W. Kugel ◽  
G.D. Martin ◽  
...  
Keyword(s):  
Heating System ◽  
Neutral Beam ◽  
Beam Heating ◽  
Test Reactor

Fast-Probe Plasma Diagnostics

1988 ◽  
Vol 117 ◽  
Author(s):  
Dennis M. Manos ◽  
Stephen J. Kilpatrick
Keyword(s):  
Edge Plasma ◽  
Neutral Beam ◽  
Operating Variables ◽  
The Past ◽  
Single Discharge ◽  
Beam Heating ◽  
Electron Density And Temperature ◽  
Test Reactor ◽  
Temporal Profiles ◽  
Low Temperature Process

AbstractWe have used a variety of electrostatic, calorimetric and sample exposure probes to diagnose the edge plasma of neutral-beam heated discharges on the tokamak fusion test reactor (TFTR).In the past, spatial profiles of electron density and temperature, and other edge parameters, were generated by repositioning probes between discharges during experiments consisting of a large number of nominally identical discharges. Recently, we have employed a probe which executes a relatively rapid stroke to generate spatial and temporal profiles during a single discharge. This has greatly enhanced our ability to perform systematic studies of the edge plasma as various operating variables are changed. In addition, this rapid radial motion permits withdrawal of the probe during portions of the discharge when the intense neutral beam heating would otherwise damage the measuring tips.Applications of such a technique to low temperature, process plasmas will be discussed.

Charge-exchange measurements of d-d triton distribution functions in high-power neutral beam heating on JT-60U

1999 ◽  
Vol 41 (10) ◽  
pp. 1291-1301 ◽  
Author(s):  
F V Tchernychev ◽  
Y Kusama ◽  
M Nemoto ◽  
A Morioka ◽  
K Tobita ◽  
...  
Keyword(s):  
Charge Exchange ◽  
High Power ◽  
Distribution Functions ◽  
Neutral Beam ◽  
Beam Heating

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.

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