[PDF] Top 20 Electron cyclotron heating and current drive using the electron Bernstein modes

... Electron Bernstein Waves are strongly absorbed near cyclotron harmonics, and the sharp edge to the resonant region means that the absorption is highly localised, making them a strong candidate for ... See full document

... After 3 days of W7-X operation, the glow discharge system was operated with helium for periods of 20 min - 40 min in advance of each experiment day. Fig. 7 shows the value of the neutral pressure peak after a helium ... See full document

... Electron cyclotron (EC) resonance heating and current drive (H&CD) will be one of the auxiliary sys- tems available in ITER [1], and it is particularly important to have the EC ... See full document

... 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 ... See full document

... with Electron Cyclotron Current Drive (ECCD) injected at the resonant surface of interest to substitute the loss of current inside the island with an externally applied ...the ... See full document

... plasma current and forming an ST configuration without using the central Ohmic ...devices. Electron cyclotron heating (ECH) start-up is one such method, and many experiments on ST ... See full document

... trons to ions were negligibly small (only 0.3 MW), ow- ing to the small difference between the ion and electron temperatures (see Fig. 3). On the other hand, the central (ρ < ∼0.1) ion heating power ... See full document

... a heating method in fusion devices, electron cy- clotron heating (ECH) has a great advantage; that is, the electron cyclotron (EC) wave antennas can be installed apart from the plasma ... See full document

... bulk cyclotron waves is developed sufficiently well [see ...bulk electron cyclotron waves in nuclear fusion investigations [3–5] for additional plasma heating and plasma ...surface ... See full document

... an electron cyclotron resonance heating system consisting of ten 140 GHz gyrotrons ...for electron cyclotron current drive (ECCD) experiments, which have been successfully ... See full document

... 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 ... See full document

... the electron cyclotron (EC) frequency range, were used in the Microwave Tokamak Experiment (MTX) [1] for heating and for current generation in high density ...reactor heating and ... See full document

... non-inductive current should be as high as possible to approach steady-state ...reason, current-drive methods with high e ffi ciency (large current per unit injected power) should be ... See full document

... plasma current and magnetic field structures such as ro- tational transform and magnetic shear profiles in ...optimized using the ...ECCD modes was observed clearly, thus indicating successful ... See full document

... Comparatively little work has been done on instability to e/m waves in tokamak relevant plasmas. Bomatici et al (1983B) and Yoon have investigated relativistic anisotropic distributions for instability, but it is not ... See full document

... suggest using two different kinds of steering mechanism for the poloidal and toroidal ...to drive the push rods which can be controlled by NI-cRIO main ... See full document

... increasing electron temperature and density, both OM and XM absorption may occur, although with a di ff erent spatial ...EC current up to ≈ 40 kA / MW is driven in a wide radial interval (ρ ... See full document

... As shown in the previous Sections, in the case of a uniform magnetic field, the properties of the eigenmodes of a circular waveguide allow the realization of either a “gyrotron-gyrotron” scheme of the two-wave oscillator ... See full document

... figuration, and Fig. 3 shows the refractive indices along the ray trajectory. In the KRAY code, the optimal view- ing angle for O-X mode conversion is searched as well as the TRAVIS code. We confirm that the O-X window ... See full document

... The plasma particles motion is described by Vlasov-Boltzmann kinetic equation with Maxwellian non-perturbed plasma particles distribution function. Fields of the modes are described by Maxwell set of equations. It ... See full document