Study on Matching a 300 MVA Motor Generator with an Ohmic Heating Power Supply in HL-2M

Peng, Jianfei; Weimin, Xuan; Wang, Haibing; Li, Huajun; Wang, Yingqiao; Wang, Shujin

doi:10.1088/1009-0630/15/3/22

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…A LHCD system of 4 MW and an ECRH system of 8 MW, are currently under installation. Helicon wave system is also being designed due to its high CD efficiency [24][25][26][27]. Therefore, helicon wave was proposed as a particularly attractive mean for plasma heating and CD in HL-2M.…”

Section: Introductionmentioning

confidence: 99%

Helicon wave heating and current drive in toroidal plasmas

Ding

Dong

et al. 2020

Plasma Phys. Control. Fusion

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Investigation of helicon wave heating and current drive (CD) in toroidal plasma has been carried out with the ray-tracing code GENRAY. The wave trajectories, profiles of power deposition and driven-currents are presented. It is shown that increasing the poloidal launch angle does not change the absorption rate of the wave, but moves the peak of the wave deposition toward the plasma core. Wave frequencies in the range of our interest (460 MHz ∼ 480 MHz) do not change the absorption of the wave. Under low parameter plasmas, we find that both the peak position and magnitude of the wave power deposition are dependent on the launched parallel refractive index n || . With increasing the refractive index, the driving efficiency first increases and then decreases. The parallel refractive index figure of merit for mid-plane launching in HL-2M configuration is 3.2. With high plasma parameters, both the position and magnitude of the driving current are weakly dependent on n || . The magnitude of the driven current is determined by both the absorption rate and the value of ξ e , which is related to n || . It is also demonstrated that driven current increases with increase of the core plasma temperature and decrease of the core plasma density. The plasma ohmic current seems do not significantly affect the helicon CD efficiency, but moves the driven current toward the plasma core region and narrows the width of the driven current profile. In addition, the preliminary calculations including scrape-off-layer (SOL) suggest that the power absorption rate loss in SOL is about 5%-20%. These results provide a reference and theoretical basis for the design and construction of HL-2M helicon wave system.

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Section: Introductionmentioning

confidence: 99%

Helicon wave heating and current drive in toroidal plasmas

Ding

Dong

et al. 2020

Plasma Phys. Control. Fusion

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“…The goal of the HL-2M is to illuminate important research issues such as the physics of plasma confinement, transport, high energy particles, MHD stability, and the interaction between the first wall and plasma for fusion study. [5] On one hand, the HL-2M tokamak will largely take advantage of many systems of the present HL-2A, while, on the other hand, the HL-2M will have many advantages in systems of heating, current drive, diagnostics, power suppliers, etc., [6,7] in comparison with the HL-2A.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the optimized performance of the electron cyclotron wave system in a HL-2M tokamak

Gong

Dong

et al. 2016

Chinese Phys. B

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The capabilities of current drive, neoclassical tearing mode (NTM) stabilization, and sawtooth control are analyzed for the electron-cyclotron wave (ECW) system in a HL-2M tokamak. Better performance of the upper launcher is demonstrated in comparison with that of a dropped upper launcher, in terms of J EC /J bs for NTM stabilization and I ECCD /(∆ρ tor ) 2 for sawtooth control. 1-MW ECW power is enough for the 3/2 NTM stabilization, and 1.8-MW ECW power is required to suppress 2/1 NTM in a single null divertor equilibrium with 1.2-MA toroidal current with the upper launcher. Optimization simulation of electron-cyclotron current drive (ECCD) is carried out for three mirrors in an equatorial port, indicating that the middle mirror has a good performance compared with the top and bottom mirrors. The results for balanced co-and counter-ECCD in an equatorial port are also presented.

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