The preliminary experimental results of ac plasma discharges in the CT-6B tokamak have been achieved by an active plasma current feedback system and the keys to a smooth transition through current zero and some phenom...The preliminary experimental results of ac plasma discharges in the CT-6B tokamak have been achieved by an active plasma current feedback system and the keys to a smooth transition through current zero and some phenomena related to the current reversal phase are also presented.展开更多
We propose a method to determine the scaling law of the electron thermal conductivity χ^(0)_(e)T^(λ)_(e)with modulating heat pulses.Relation between tempera-ture phase lag and parameters(χ^(0)_(e)λ)is established,...We propose a method to determine the scaling law of the electron thermal conductivity χ^(0)_(e)T^(λ)_(e)with modulating heat pulses.Relation between tempera-ture phase lag and parameters(χ^(0)_(e)λ)is established,from which the electron thermal conductivity in center region of CT-6B tokamak is determined.展开更多
An electron cyclotron resonance heating experiment has been performed by using a gyrotron system for the fundamental and second harmonic resonance heating on CT-6B tokamak.Obvious changes are observed in soft X-ray ra...An electron cyclotron resonance heating experiment has been performed by using a gyrotron system for the fundamental and second harmonic resonance heating on CT-6B tokamak.Obvious changes are observed in soft X-ray radiations,electron cyclotron emission,displacement of plasma column,impurity line radiations,and bremsstrahlung radiation when heating pulse is injected,indicating an increase of the plasma electron temperature.展开更多
A full current ac-modulating tokamak discharges have been achieved in the CT-6B device.Obvious modulating changes are observed in plasma current,loop voltage,soft X-ray radiations,electron density,Hαline emission,and...A full current ac-modulating tokamak discharges have been achieved in the CT-6B device.Obvious modulating changes are observed in plasma current,loop voltage,soft X-ray radiations,electron density,Hαline emission,and hard X-ray radiations when the modulating pulse is added.The continuous tokamak operation with many cycles of low frequency modulating plasma current indicates the possibility of steady state tokamak operation.展开更多
The hard X-ray emissions from different chords of plasma column and at the limiter have been detected by a detector array on CT-6B tokamak.The experimental results show that the hard X-ray emission is correlative with...The hard X-ray emissions from different chords of plasma column and at the limiter have been detected by a detector array on CT-6B tokamak.The experimental results show that the hard X-ray emission is correlative with MHD activity in the plasma.The measured signals are in the same phase as that of soft X-ray from the outer region near q=I resonant surface when sawtooth oscillation occus,indicating that the most part of runway electrons is generated in the region.展开更多
基金Supported by the Chinese National Advanced Technology Foundation.
文摘The preliminary experimental results of ac plasma discharges in the CT-6B tokamak have been achieved by an active plasma current feedback system and the keys to a smooth transition through current zero and some phenomena related to the current reversal phase are also presented.
文摘We propose a method to determine the scaling law of the electron thermal conductivity χ^(0)_(e)T^(λ)_(e)with modulating heat pulses.Relation between tempera-ture phase lag and parameters(χ^(0)_(e)λ)is established,from which the electron thermal conductivity in center region of CT-6B tokamak is determined.
文摘An electron cyclotron resonance heating experiment has been performed by using a gyrotron system for the fundamental and second harmonic resonance heating on CT-6B tokamak.Obvious changes are observed in soft X-ray radiations,electron cyclotron emission,displacement of plasma column,impurity line radiations,and bremsstrahlung radiation when heating pulse is injected,indicating an increase of the plasma electron temperature.
基金Supported by the National Natural Science Foundation of China.
文摘A full current ac-modulating tokamak discharges have been achieved in the CT-6B device.Obvious modulating changes are observed in plasma current,loop voltage,soft X-ray radiations,electron density,Hαline emission,and hard X-ray radiations when the modulating pulse is added.The continuous tokamak operation with many cycles of low frequency modulating plasma current indicates the possibility of steady state tokamak operation.
文摘The hard X-ray emissions from different chords of plasma column and at the limiter have been detected by a detector array on CT-6B tokamak.The experimental results show that the hard X-ray emission is correlative with MHD activity in the plasma.The measured signals are in the same phase as that of soft X-ray from the outer region near q=I resonant surface when sawtooth oscillation occus,indicating that the most part of runway electrons is generated in the region.
