scholarly journals Роль электрического поля в формировании режима отрыва плазмы токамака

2018 ◽  
Vol 44 (6) ◽  
pp. 66
Author(s):  
И.Ю. Сениченков ◽  
Е.Г. Кавеева ◽  
В.А. Рожанский ◽  
Е.А. Сытова ◽  
И.Ю. Веселова ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
High Field ◽  
Cold Plasma ◽  
High Density ◽  
Numerical Code ◽  
Tokamak Plasma ◽  
Plasma Region ◽  
Confinement Region ◽  
Self Consistent ◽  
Plasma Perturbation

AbstractModeling of the transition to the detachment of ASDEX Upgrade tokamak plasma with increasing density is performed using the SOLPS-ITER numerical code with a self-consistent account of drifts and currents. Their role in plasma redistribution both in the confinement region and in the scrape-off layer (SOL) is investigated. The mechanism of high field side high-density formation in the SOL in the course of detachment is suggested. In the full detachment regime, when the cold plasma region expands above the X -point and reaches closed magnetic-flux surfaces, plasma perturbation in a confined region may lead to a change in the confinement regime.

Self-consistent solutions for vacuum currents around a magnetic flux string

1993 ◽  
Vol 47 (2) ◽  
pp. 694-702 ◽  
Author(s):  
Hsiang-nan Li ◽  
David A. Coker ◽  
Alfred S. Goldhaber
Keyword(s):  
Magnetic Flux ◽  
Self Consistent

Compatibility of advanced tokamak plasma with high density and high radiation loss operation in JT-60U

2005 ◽  
Vol 45 (12) ◽  
pp. 1618-1627 ◽  
Author(s):  
H Takenaga ◽  
N Asakura ◽  
H Kubo ◽  
S Higashijima ◽  
S Konoshima ◽  
...  
Keyword(s):  
High Density ◽  
Radiation Loss ◽  
Tokamak Plasma ◽  
High Radiation

scholarly journals Quantitative Observation of Magnetic Flux Distribution in New Magnetic Films for Future High Density Recording Media

Nano Letters ◽  
2009 ◽  
Vol 9 (8) ◽  
pp. 2803-2806 ◽  
Author(s):  
Aurélien Masseboeuf ◽  
Alain Marty ◽  
Pascale Bayle-Guillemaud ◽  
Christophe Gatel ◽  
Etienne Snoeck
Keyword(s):  
Magnetic Flux ◽  
Flux Distribution ◽  
Magnetic Films ◽  
High Density ◽  
Recording Media ◽  
High Density Recording

Polytopic Control of the Magnetic Flux Profile in a Tokamak Plasma

2011 ◽  
Vol 44 (1) ◽  
pp. 6686-6691 ◽  
Author(s):  
Federico Bribiesca Argomedo ◽  
Christophe Prieur ◽  
Emmanuel Witrant ◽  
Sylvain Brémond
Keyword(s):  
Magnetic Flux ◽  
Tokamak Plasma ◽  
Flux Profile

Testing of a Dual Field Magnetic Flux Leakage (MFL) Inspection Tool for Detecting and Characterizing Mechanical Damage Features

2008 ◽  
Author(s):  
Alex Rubinshteyn ◽  
Steffen Paeper ◽  
Bruce Nestleroth
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Residual Stresses ◽  
High Field ◽  
Mechanical Damage ◽  
Magnetic Flux Leakage ◽  
Low Field ◽  
Field Unit ◽  
Low Magnetic Field ◽  
Flux Leakage

Battelle has developed dual field magnetic flux leakage (MFL) technology for the detection and characterization of mechanical damage to pipelines. The basic principle involves the use of a high magnetic field between 140 and 180 Oersted (11.1 to 14.3 kA/m) and the use of a low magnetic field between 50 and 70 Oersted (4 to 5.6 kA/m). At high magnetic field levels, the flux leakage signal is primarily influenced by changes in the geometry of a pipe wall. At low magnetic field levels, the MFL signal is due to residual stresses and metallurgical changes as well as geometry changes to the pipe caused by mechanical damage and wall thinning. A decoupling signal processing method developed by Battelle is used to isolate the portion of the mechanical damage signals due to metallurgical damage and residual stresses, which allows the characteristics of a dent-gouge feature to be more clearly differentiated. The decoupling method involves first scaling down the high field signal to the level of the low field signal, and then subtracting it from the low field signal. This produces a decoupled signal that is primarily influenced by the residual stresses and metallurgical changes caused by mechanical damage. Rosen has developed a tool to test the dual field technology and is evaluating tool performance by running the tool in a 30 inch diameter pipeline segment. The tool itself is composed of three separate modules coupled together: a high field unit downstream of a low field unit which is downstream of a caliper arm unit that is used to detect and characterize reductions in the internal diameter. The general and magnetic design of the tool, along with the scaling algorithm is discussed. Results from a pull test in a pipe section with dents whose geometry has been independently characterized are also discussed. This work is partially funded by the U.S. Department of Transportation, Pipeline and Hazardous Materials Safety administration (DOT PHMSA) and the Pipeline Research Council International, Inc. (PRCI).

Observation of the high-density front at high-field-side in J-TEXT tokamak

2021 ◽  
Author(s):  
Peng Shi ◽  
Hongjuan Sun ◽  
Ge Zhuang ◽  
Zhifeng Cheng ◽  
Li Gao ◽  
...  
Keyword(s):  
High Field ◽  
High Density
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