Formation of a three-dimensional scrape-off layer in a fast rotating resonant magnetic perturbation field at TEXTOR

2011 ◽  
Vol 415 (1) ◽  
pp. S923-S926 ◽  
Author(s):  
H. Stoschus ◽  
O. Schmitz ◽  
B. Unterberg ◽  
M.W. Jakubowski ◽  
H. Frerichs ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Magnetic Perturbation ◽  
Perturbation Field ◽  
Fast Rotating

Continuum resonance induced electromagnetic torque by a rotating plasma response to static resonant magnetic perturbation field

2012 ◽  
Vol 19 (10) ◽  
pp. 102507 ◽  
Author(s):  
Yueqiang Liu ◽  
J. W. Connor ◽  
S. C. Cowley ◽  
C. J. Ham ◽  
R. J. Hastie ◽  
...  
Keyword(s):  
Electromagnetic Torque ◽  
Magnetic Perturbation ◽  
Perturbation Field ◽  
Plasma Response

Physical design of a new set of high poloidal mode number coils in the EAST tokamak

2022 ◽  
Author(s):  
Liang Liao ◽  
Yunfeng Liang ◽  
Shaocheng Liu ◽  
Huaxiang Zhang ◽  
Xiang Ji ◽  
...  
Keyword(s):  
Magnetic Topology ◽  
Magnetic Perturbation ◽  
Perturbation Field ◽  
Low Field ◽  
Flexible Working ◽  
Magnetic Spectrum ◽  
Edge Localized Mode ◽  
Field Edge ◽  
Localized Mode ◽  
Spectrum Characteristic

Abstract An external resonant magnetic perturbation (RMP) field, an effective method to mitigate or suppress the edge localized mode (ELM), has been planned to be applied on the ELM control issue in ITER. A new set of magnetic perturbation coils, named as high m coils, has been developed for the EAST tokamak. The magnetic perturbation field of the high m coils is localized in the midplane of the low field side (LFS), with a spectrum characteristic of high m and wide n, where m and n are the poloidal and toroidal mode numbers, respectively. The high m coils generates a strong localized perturbation field. Edge magnetic topology under the application of high m coils should have either a small or no stochastic region. With the combination of the high m coils and the current RMP coils, flexible working scenarios of the magnetic perturbation field are available, which is beneficial for ELM control exploration on EAST. Numerical simulations have been carried out to characterize the high m coil system, including the magnetic spectrum and magnetic topology, which shows a great flexibility of magnetic perturbation variation as a tool to investigate the interaction between ELM and external magnetic perturbation.

scholarly journals Environmental systematics and astronomical refraction II

1979 ◽  
Vol 89 ◽  
pp. 13-25
Author(s):  
James A. Hughes
Keyword(s):  
Three Dimensional ◽  
Urban Heat Islands ◽  
Zenith Distance ◽  
Heat Island ◽  
Heat Islands ◽  
Perturbation Field ◽  
Systematic Effects ◽  
Urban Heat ◽  
Astronomical Refraction

The role of urban heat islands in producing systematic isopycnic tilts is explored in more detail, and with greater rigor, than in Part I of this series. (Perth, 1974).Specifically, a three dimensional integration is carried out, and light rays are, in effect, “traced” through the resulting perturbation field by evaluating the integral of anomalous refraction. This is done for various values of the parameters, viz., wind direction and observatory location relative to the heat island, strength of the central perturbation, zenith distance of the observed object, etc.It is stressed that heat islands are not the only source of such systematic effects.Finally, a brief discussion of some possible methods of determining observationally the effects here treated theoretically, as well as other site dependent effects, is appended.

Influence of external resonant magnetic perturbation field on edge plasma of small tokamak HYBTOK-II

2015 ◽  
Vol 463 ◽  
pp. 463-466
Author(s):  
Y. Hayashi ◽  
Y. Suzuki ◽  
N. Ohno ◽  
M. Okamoto ◽  
Y. Kikuchi ◽  
...  
Keyword(s):  
Edge Plasma ◽  
Magnetic Perturbation ◽  
Perturbation Field

scholarly journals Formation of a three-dimensional plasma boundary after decay of the plasma response to resonant magnetic perturbation fields

2013 ◽  
Vol 54 (1) ◽  
pp. 012001 ◽  
Author(s):  
O. Schmitz ◽  
T.E. Evans ◽  
M.E. Fenstermacher ◽  
M.J. Lanctot ◽  
C.L. Lasnier ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Plasma Boundary ◽  
Magnetic Perturbation ◽  
Plasma Response
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