scholarly journals Response of impurity particle confinement time to external actuators in QH-mode plasmas on DIII-D

2014 ◽  
Vol 54 (11) ◽  
pp. 114011 ◽  
Author(s):  
B.A. Grierson ◽  
K.H. Burrell ◽  
A.M. Garofalo ◽  
W.M. Solomon ◽  
A. Diallo ◽  
...  
Keyword(s):  
Confinement Time ◽  
Impurity Particle ◽  
Particle Confinement

Numerical determination of the ambipolar electric field in a stellarator-reactor plasma

1989 ◽  
Vol 42 (1) ◽  
pp. 133-151 ◽  
Author(s):  
W. D. D'Haeseleer ◽  
W. N. G. Hitchon ◽  
J. L. Shohet
Keyword(s):  
Electric Field ◽  
Parametric Study ◽  
Parameter Range ◽  
Confinement Time ◽  
Numerical Determination ◽  
Algebraic Condition ◽  
Order Of Magnitude ◽  
Numerical Parametric Study ◽  
Particle Confinement

A numerical parametric study of the radial ambipolar electric field in a stellarator reactor has been undertaken. With the numerical neoclassical code FLOCS (Flow Code for Stellarators), which is capable of handling both ions and electrons of all relevant kinetic energies, the radial ambipolar field (Er)AMB is determined from the algebraic condition that ion and electron fluxes are equal. As expected, the potential is of the same order of magnitude as the temperature. Somewhat surprisingly at first sight, however, the potential does not change much with the temperature (in the parameter range under consideration), being somewhat insensitive to moderate variations of T. An explanation for this behaviour is presented. Finally, the radial particle fluxes, consistent with the obtained (Er)AMB, and the particle confinement time are computed.

New Method of Particle Confinement Time Measurement in RF Traps

2000 ◽  
Vol 39 (Part 2, No. 3A/B) ◽  
pp. L246-L248 ◽  
Author(s):  
Mitsutoshi Aramaki ◽  
Youichi Sakawa ◽  
Tatsuo Shoji
Keyword(s):  
Time Measurement ◽  
New Method ◽  
Confinement Time ◽  
Particle Confinement

Theoretical calculation of electron density and temperature in the edge of tokamak

2017 ◽  
Vol 31 (17) ◽  
pp. 1750196 ◽  
Author(s):  
Muhammad Asif ◽  
Anila Asif
Keyword(s):  
Theoretical Calculation ◽  
Electron Density ◽  
Langmuir Probe ◽  
Temporal Evolution ◽  
Edge Plasma ◽  
Confinement Time ◽  
Electron Density And Temperature ◽  
Particle Confinement ◽  
Good Agreement ◽  
Probe Array

In this work, we use a method based on the concept of particle confinement time [Formula: see text] uniqueness to calculate the electron density and temperature in ohmically heated, edge plasma of the Hefei tokamak-7. Here, with the help of the data taken from Johnson and Hinnov’s table, we have done an extensive work to find electron densities and temperatures that satisfy the [Formula: see text] uniqueness to evaluate the temporal evolution of electron density [Formula: see text] and temperature [Formula: see text]. The results are in good agreement as measured from the Langmuir probe array in previous works.

Laser blow-off injected impurity particle confinement times in JET and Tore Supra

1995 ◽  
Vol 35 (9) ◽  
pp. 1115-1124 ◽  
Author(s):  
M Mattioli ◽  
R Giannella ◽  
R Myrnas ◽  
C Demichelis ◽  
B Denne-Hinnov ◽  
...  
Keyword(s):  
Impurity Particle ◽  
Particle Confinement

Doppler Temperature and Particle Confinement Time Determined from Measurements of Hα-Line on a Tokamak Plasma in the JFT-2a Device

1978 ◽  
Vol 17 (5) ◽  
pp. 903-910 ◽  
Author(s):  
Satoshi Kasai ◽  
Masashi Azumi ◽  
Akimasa Funahashi ◽  
Tatsuo Sugie ◽  
Tomonori Takizuka
Keyword(s):  
Tokamak Plasma ◽  
Confinement Time ◽  
Particle Confinement

Fast gas injection as a diagnostic technique for particle confinement time measurements

2006 ◽  
Vol 77 (10) ◽  
pp. 10E901 ◽  
Author(s):  
T. Gray ◽  
R. Kaita ◽  
R. Majeski ◽  
J. Spaleta ◽  
J. Timberlake
Keyword(s):  
Gas Injection ◽  
Diagnostic Technique ◽  
Confinement Time ◽  
Particle Confinement
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