Synergistic effects of the safety factor and shear flows on development of internal transport barriers in reversed shear plasmas

2002 ◽  
Vol 9 (3) ◽  
pp. 748-751 ◽  
Author(s):  
A. K. Wang ◽  
J. Q. Dong ◽  
W. X. Qu ◽  
X. M. Qiu
Keyword(s):  
Safety Factor ◽  
Shear Flows ◽  
Synergistic Effects ◽  
Transport Barriers ◽  
Internal Transport Barriers ◽  
Reversed Shear ◽  
Internal Transport

Dynamics and control of internal transport barriers in reversed shear discharges

1998 ◽  
Vol 5 (4) ◽  
pp. 938-952 ◽  
Author(s):  
D. E. Newman ◽  
B. A. Carreras ◽  
D. Lopez-Bruna ◽  
P. H. Diamond ◽  
V. B. Lebedev
Keyword(s):  
Transport Barriers ◽  
Internal Transport Barriers ◽  
Dynamics And Control ◽  
And Control ◽  
Reversed Shear ◽  
Internal Transport

Study of internal transport barriers by comparison of reversed shear and high- discharges in JT-60U

1998 ◽  
Vol 40 (5) ◽  
pp. 641-645 ◽  
Author(s):  
Y Koide ◽  
M Mori ◽  
T Fujita ◽  
H Shirai ◽  
T Hatae ◽  
...  
Keyword(s):  
Transport Barriers ◽  
Internal Transport Barriers ◽  
Reversed Shear ◽  
Internal Transport

Intrinsic rotation, hysteresis and back transition in reversed shear internal transport barriers

2011 ◽  
Vol 51 (7) ◽  
pp. 073021 ◽  
Author(s):  
S.S. Kim ◽  
Hogun Jhang ◽  
P.H. Diamond ◽  
L. Terzolo ◽  
S. Yi ◽  
...  
Keyword(s):  
Transport Barriers ◽  
Internal Transport Barriers ◽  
Reversed Shear ◽  
Internal Transport

Characteristics of internal transport barriers in JT-60U reversed shear plasmas

2001 ◽  
Vol 41 (7) ◽  
pp. 865-872 ◽  
Author(s):  
Y Sakamoto ◽  
Y Kamada ◽  
S Ide ◽  
T Fujita ◽  
H Shirai ◽  
...  
Keyword(s):  
Transport Barriers ◽  
Internal Transport Barriers ◽  
Reversed Shear ◽  
Internal Transport

scholarly journals Перенос тепла и частиц в начальной фазе омических разрядов сферического токамака Глобус-М

2019 ◽  
Vol 45 (13) ◽  
pp. 17
Author(s):  
А.Ю. Тельнова ◽  
Г.С. Курскиев ◽  
Н.Н. Бахарев ◽  
В.К. Гусев ◽  
Е.О. Киселев ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Safety Factor ◽  
Initial Conditions ◽  
Transport Processes ◽  
Density Peak ◽  
Transport Barriers ◽  
Internal Transport Barriers ◽  
Plasma Core ◽  
Internal Transport ◽  
Electron Density Peak

AbstractThe results of experiments and simulations of the transport of heat and particles in the Globus-M spherical tokamak are presented. Investigations were carried out in the ohmic mode in hydrogen and deuterium plasma. It is shown that in the phase of current growth under the same initial conditions, as long as the condition is met at which the minimum of the safety factor exceeds unity, two scenarios of discharge development are possible: with an electron temperature dive or with an electron density peak. After the safety factor reaches the value of 1, the differences are no longer observed. Modeling of transport processes using the ASTRA code showed that the dive of the electron temperature and density is a consequence of the decrease in the transport of heat and particles in the plasma core (i.e., the presence of internal transport barriers).

Effects of a non-monotonic safety factor on the particle transport and diffusion in the case of a reversed magnetic shear

2009 ◽  
Vol 76 (1) ◽  
pp. 29-37
Author(s):  
M. GHABBOURI ◽  
D. SAIFAOUI ◽  
A. BOULEZHAR ◽  
A. DEZAIRI ◽  
M. EL MOUDEN
Keyword(s):  
Safety Factor ◽  
Particle Transport ◽  
Numerical Study ◽  
Dominant Role ◽  
Magnetic Shear ◽  
Transport Barriers ◽  
Internal Transport Barriers ◽  
Transport And Diffusion ◽  
And Diffusion ◽  
Internal Transport

AbstractThis work is based on a numerical study of particle transport and diffusion using ITER parameters. In particular, the effects of introducing a non-monotonic safety factor (NMSF) in the case of a reversed magnetic shear are shown. These results are compared with those found by using a monotonic safety factor (MSF). Double internal transport barriers are detected influencing the transport and diffusion of particles. The choices of the mode (m, n) and the m/n values play a dominant role for the particle diffusion, which leads to an improvement of the magnetic confinement.

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