Dependence of energy confinement time on toroidal magnetic field in the TUMAN-3M tokamak

2012 ◽  
Vol 38 (4) ◽  
pp. 320-323
Author(s):  
S. V. Lebedev ◽  
L. G. Askinazi ◽  
M. I. Vildjunas ◽  
N. A. Zhubr ◽  
V. A. Kornev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Toroidal Magnetic Field ◽  
Confinement Time ◽  
Energy Confinement ◽  
Energy Confinement Time

Energy confinement in the spherical tokamak Globus-M2 with a toroidal magnetic field reaching 0.8 T

2021 ◽  
Author(s):  
Gleb Kurskiev ◽  
Vasily K Gusev ◽  
Nikolay Sakharov ◽  
Yury Petrov ◽  
Nikolai Nikolaevich Bakharev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Strong Dependence ◽  
Plasma Electron ◽  
Toroidal Magnetic Field ◽  
Spherical Tokamak ◽  
Energy Confinement ◽  
Energy Confinement Time ◽  
Plasma Core ◽  
The Magnetic Field ◽  
Average Plasma Density

Abstract The work presents the results of the energy confinement study carried out on the compact spherical tokamak (ST) Globus-M2 with toroidal magnetic field (BT) as high as 0.8 T. A reproducible and stable discharge was obtained with the average plasma density (5-10) 1019 m-3. Despite the increase in the magnetic field, the neutral beam injection (NBI) led to clear and reproducible transition to the H-mode accompanied by a decrease in the turbulence level at the plasma edge. NBI allowed effectively heat the plasma: electron and ion temperatures in the plasma core exceeded 1 keV. In comparison with the previous experiments carried out with BT=0.4 T plasma total stored energy was increased by a factor of 4. The main reason of this phenomenon is a strong dependence of the energy confinement time (τE) on the toroidal magnetic field in the spherical tokamak. It was experimentally confirmed that such kind of dependence is valid for ST with magnetic field up to 0.8 T. It also has been shown that the enhancement of the energy confinement in the Globus-M2 with collisionality decrease is associated with an improvement of both electron and ion heat transport.

Parametric scaling studies of the energy confinement time for neutral beam heated Heliotron E plasmas

1990 ◽  
Vol 30 (1) ◽  
pp. 81-96 ◽  
Author(s):  
F. Sano ◽  
Y. Takeiri ◽  
K. Hanatani ◽  
H. Zushi ◽  
M. Sato ◽  
...  
Keyword(s):  
Neutral Beam ◽  
Confinement Time ◽  
Energy Confinement ◽  
Energy Confinement Time

Effect of energetic ion loss on ICRF heating efficiency and energy confinement time in heliotrons

1999 ◽  
Vol 39 (9) ◽  
pp. 1165-1173 ◽  
Author(s):  
S Murakami ◽  
N Nakajima ◽  
M Okamoto ◽  
J Nührenberg
Keyword(s):  
Confinement Time ◽  
Energy Confinement ◽  
Heating Efficiency ◽  
Energy Confinement Time ◽  
Icrf Heating

The ignition brachystochrone

2001 ◽  
Vol 65 (1) ◽  
pp. 59-72
Author(s):  
A. SESTERO
Keyword(s):  
Variational Analysis ◽  
Confinement Time ◽  
Energy Confinement ◽  
Energy Confinement Time ◽  
Euler’S Equation ◽  
Euler's Equation ◽  
Plasma Burning

The path is sought in the temperature–density plane that allows desired plasma burning conditions to be reached in the shortest possible time. This task is undertaken using the tools of classical variational analysis. The derived expression of Euler's equation is found to be degenerate. Ways to overcome such an impasse are examined, and eventually the solution is obtained. Illustrative applications to the OMITRON proposed ignition experiment are presented, which make reference to the Lackner–Gottardi and ITER-P89 scalings for the energy confinement time.

Progress with energy confinement time in the CTX spheromak

1990 ◽  
Vol 2 (6) ◽  
pp. 1342-1346 ◽  
Author(s):  
T. R. Jarboe ◽  
F. J. Wysocki ◽  
J. C. Fernández ◽  
I. Henins ◽  
G. J. Marklin
Keyword(s):  
Confinement Time ◽  
Energy Confinement ◽  
Energy Confinement Time
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