plasma electron cyclotron heating
Microwave Reflection from the Region of Electron Cyclotron Resonance Heating in the L-2M Stellarator
... high-temperature plasma in toroidal magnetic confinement systems, reflection of mi- crowaves from the electron cyclotron resonance (ECR) re- gion, where the heating radiation is absorbed, is ...
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Modification of argon impurity transport by electron cyclotron heating in KSTAR H-mode plasmas
... the heating position (𝑟/𝑎 = ...the heating position was inward in both ECH and non-ECH plasmas; it did not reverse with ECH as shown previously in KSTAR L-mode plasmas ...
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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
... (SDC) plasma in LHD, [2] study of ECRH by the EBW has grown in ...the electron density at the electron cyclotron resonance (ECR) layer exceeds the cutoff density of the electron ...
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Capabilities of the ITER Electron Cyclotron Equatorial Launcher for Heating and Current Drive
... is driven due to the low plasma density. XM interaction at first harmonic is usually prevented when the EC beams are injected from the low field side because of the presence of the right cuto ff , that is located ...
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Magnetic field turbulence, electron heating, magnetic holes, proton cyclotron waves, and the onsets of bipolar pulse (electron hole) events: a possible unifying scenario
... interrelated plasma phenomena in the Polar data ...cause electron heating through the pon- deromotive ...electromagnetic cyclotron waves through the loss cone insta- ...ion cyclotron ...
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ICRF Heating in Helical Reactor
... by electron and tritium normalized by initial wave ...the plasma density, and the por- tion of absorption by electron and tritium was ...the cyclotron reso- nance of tritium, electrons start ...
5
Beam tracing study for design and operation of two-pass electron cyclotron heating at ASDEX Upgrade
... The electron cyclotron resonance heating system at ASDEX Upgrade (AUG) is currently being extended to eight similar Gyrotrons in ...the plasma density may be above the X-2 cut-off density at ...
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Physics of Heliotron J Confinement
... of electron cyclotron resonance (ECR)/neutral beam injection (NBI)/ion cyclotron range of frequencies (ICRF) heating plasmas have been made for understanding global energy confinement in ...
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Recent Progress of 2MW 140GHz ECRH System on HL-2A
... Electron cyclotron heating (ECRH) and electron cyclotron current drive (ECCD) has been proven to be one of the most effective and promising methods for plasma heating and ...
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Electron Cyclotron Heating Start-Up Experiments on TST-2
... achieved plasma cur- rent but also in discharge waveforms and parameter ...Before plasma generation (breakdown) at 10 ms, the O-mode leakage power is nearly the same as the X-mode leakage ...the ...
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Benchmarking of electron cyclotron heating and current drive codes on ITER scenarios within the European Integrated Tokamak Modelling framework
... to plasma transition: simple ray-tracing cannot describe di ff raction e ff ects, which are expected to play a role in the UL case where the beam is focused inside the plasma, and a di ff erent description ...
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Remote-Steering Antennas for 140 GHz Electron Cyclotron Heating of the Stellarator W7-X
... The ECRH system at the stellarator Wendelstein 7-X (W7-X) has 10 MW of continuous power at 140 GHz [1]. The beams from the 10 gyrotrons are transmitted via 2 quasi-optical multi-beam transmission lines. In addition to ...
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The theory of electron heating in collisonless plasma shock waves
... the electron plasma to cyclotron frequency ...significant electron heating. The heating rates of the modified two-stream and ion acoustic instabilities have been compared under ...
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Efficient Heating at the Third-Harmonic Electron Cyclotron Resonance in the Large Helical Device
... the cyclotron resonance and continue to interact along a long ...whole plasma cross-section for perpendicular injection and can be changed over a range of about ±30 de- grees ...
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Study on Poloidal and Toroidal Electric Field Generations by Electron Cyclotron Heating in a Helical Plasma
... Electron cyclotron heating (ECH) accelerates elec- trons perpendicularly, and generates trapped particles that tend to localize at the resonance ...
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Design and Research of Electron Cyclotron Resonance Heating and Current Dive System on HL-2M Tokamak
... Abstract. A research has been conducted to develop an 8MW electron cyclotron resonance heating and current drive (ECRH/ECCD) system on HL-2M tokamak. The ECRH system compromise eight 1MW gyrotrons, ...
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Estimation of the j × B Force Produced by Electron Cyclotron Heating in HSX Plasma
... Applying GNET code, we evaluated the velocity dis- tribution of δ f in the QHS configuration. Figures 3 (a) and 3 (b) show the velocity distribution at normalized mi- nor radius ρ ∼ 0.1 and 0.3 surface. The velocity ...
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Advanced electron cyclotron heating and current drive experiments on the stellarator Wendelstein 7-X
... The plasma facing mirror of each beam line is steerable in the poloidal and toroidal ...the plasma and the plasma current drive can be varied, ...final plasma heating ...
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Electron cyclotron heating and current drive using the electron Bernstein modes
... near cyclotron harmonics, and the sharp edge to the resonant region means that the absorption is highly localised, making them a strong candidate for controlling temperature profiles in fusion ...on ...
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Microinstabilities in high power electron cyclotron heating of plasmas
... that for iintrapped electrons the probability of an energy gain is zero and for trapped electrons the probability is on average 1/2. However for any given set of parameters (electric field, magnetic field, initial ...
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