electron cyclotron heating mode
Modification of argon impurity transport by electron cyclotron heating in KSTAR H-mode plasmas
... auxiliary heating such as ECH or ICRH have observed reductions in both the concentration and accumulation of impurities in the plasma core ...auxiliary heating, particularly the operational condition ...
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Capabilities of the ITER Electron Cyclotron Equatorial Launcher for Heating and Current Drive
... and undergo reflection and mode conversion to XM at the inner wall, to be e ffi ciently absorbed. This process requires oblique injection of EC beams with a maximum toroidal angle ≈ 23 ◦ . It is found that pure ...
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Recent Results from the Development of the Electron Cyclotron Heating System for JT-60SA toward High-Power Long-Pulse Operations
... Gyrotron operations toward the target values of JT-60SA gyrotrons have continued since the completion of JT-60U experiments in August 2008. Issues to be re- solved exist both in the gyrotrons and transmission lines. ...
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Microwave Reflection from the Region of Electron Cyclotron Resonance Heating in the L-2M Stellarator
... In a nonuniform magnetic field, the X- and B-modes turn out to be coupled. The coupling is the strongest in the ECR region, where the dispersive properties of the medium vary most rapidly, and gradually weakens with ...
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Direct Observation of Electron Heating by Electron Landau Damping of Alfvén Ion Cyclotron Waves Using Thomson Scattering System in the Tandem Mirror GAMMA 10/PDX
... loss electron energy (LEE) analyzer [5, 6]. An AIC mode leads to increases in the end loss electron flux and electron temperature that were measured using the LEE ...loss electron tem- ...
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Progress of ECRH by EBW in over-dense plasmas and controlling the confinement regime by ECCD with high power launching in LHD
... the electron density at the electron cyclotron resonance (ECR) layer exceeds the cutoff density of the electron cyclotron (EC) wave in high density operations and in such over-dense ...
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Estimation of the j × B Force Produced by Electron Cyclotron Heating in HSX Plasma
... The helically symmetric experiment (HSX) is the first quasi-symmetric stellarator device [3]. There are two typ- ical configurations for HSX. One is Quasi Helically Sym- metric (QHS) configuration, which has the helical ...
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Mode Purity of Electron Cyclotron Waves after Their Passage through the Peripheral Plasma in the Large Helical Device
... Plasma heating and current drive with Electron Cyclotron Waves (ECWs) require precise control over the polarization state of ECWs to ensure that the entire input power is deposited where ...the ...
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Efficient Heating at the Third-Harmonic Electron Cyclotron Resonance in the Large Helical Device
... trapped electron con- tributions. Extraordinary-mode waves are assumed to be injected from the upper-port antenna with a frequency of ...obtained electron temperature and density pro- files which are ...
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Beam tracing study for design and operation of two-pass electron cyclotron heating at ASDEX Upgrade
... change the launched polarisation at the given second harmonic to O-Mode (O-2), which doubles the cut-off density. Due to the finite absorption [3], there are several important constraints on the O-2 scheme: In a ...
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Electron Cyclotron Heating Start-Up Experiments on TST-2
... similar behaviors not only in the achieved plasma cur- rent but also in discharge waveforms and parameter dependences. Figure 9 shows the signal detected by the leakage monitor during O-mode injection. Before ...
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Microinstabilities in high power electron cyclotron heating of plasmas
... additional heating, in many ways ECRH is the ...(X) mode. The O mode is a transverse wave whose electric field oscillates along the direction of the magnetic field while the X mode is a mixed ...
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Electron cyclotron heating and current drive using the electron Bernstein modes
... in electron cyclotron heating - they are strongly damped, even at higher harmonics, over a short distance implying the absorp- tion is highly ...the mode could be put to in a spherical tokamak ...
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Simulation Study of ECCD by GNET with Momentum Conserving Collisional Operator
... We run the GNET iteratively and obtain the steady state solution, δ f . Figure 2 (a) shows the firstly obtained distribution function. The distribution becomes asymmet- ric in v at the high energy region. This is because ...
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Vertical Electron Cyclotron Emission Diagnostic for TCV Plasmas
... The latter three assumptions are affected by refraction. The deviation of the beam path from straight line introduces ambiguity to the relation between emission frequency and electron energy. It also en- hances ...
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Electron mirror branch: observational evidence from “historical” AMPTE IRM and Equator S measurements
... secondary electron mirror branch structures (Breuillard et ...perpendicular electron anisotropy in re- lation to the observation of high-frequency waves), which grow on the background magnetic field and ...
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Recent Progress of 2MW 140GHz ECRH System on HL-2A
... new electron cyclotron resonance heating and current drive (ECRH/ECCD) launcher system has been designed and installed on the HL-2A tokamak to inject four beams and enable continuous millimeter-wave ...
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Design and Research of Electron Cyclotron Resonance Heating and Current Dive System on HL-2M Tokamak
... Two power monitors are planned to be settled on the miter bends to measure the wave power. One is located near the gyrotron and another near the launcher, not only to estimate the transmission efficiency but also to ...
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Study of Optical Properties of Tokamak Plasma
... as electron cyclotron emission ECE at the cyclotron resonance frequency and its ...of electron cyclotron emission (ECE) can be used to determine the electron temperature of the ...
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On ion-cyclotron-resonance heating of the corona and solar wind
... In particluar, the replenishment of the absorbed wave power by a turbulent cascade in the kinetic regime is not un- derstood. For an accurate description of the energy cascade, the effects of anisotropy of the ...
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