%0 Journal Article %1 li.2007 %A Li, Jiangang %A Luo, Jiarong %A Wang, Shaojie %A Fu, Peng %A Shen, Biao %A Liu, Fukun %A Wan, Baonian %A Shan, Jiafang %A Xu, Guosheng %A Huang, Juan %A Yu, Jun %A Hu, Jiansheng %A Yuan, Qiping %A Hu, Yeming %A Team, HT-7 %D 2007 %J Nuclear Fusion %K ac_operation analytical current_reversal equilibrium i-mhd tokamak %N 9 %P 1071-1077 %T Quasi-steady-state ac plasma current operation in HT-7 tokamak %U http://stacks.iop.org/0029-5515/47/1071 %V 47 %X A quasi-steady-state alternating current operation assisted by lower hybrid wave (LHW) was achieved on a HT-7 superconducting tokamak with plasma current of $Ip = 125$ kA, line-averaged density of $1.5 10^19$ m^-3, electron temperature of $T_e = 500$ eV and 30--50 s plasma duration. Plasma current was sustained and smoothly transferred from one direction to the other without loss of ionization. Plasma position control, LHW assistance, strong gas puffing and good wall condition are the key issues to have a smooth transition of plasma current. Our modelling results show that current reversal equilibrium configuration with two oppositely flowing currents in the high-field-side and the low-field-side during current reversal exists. This is in agreement with experimental measurements.

@article{li.2007, abstract = {A quasi-steady-state alternating current operation assisted by lower hybrid wave (LHW) was achieved on a HT-7 superconducting tokamak with plasma current of $Ip = 125$ kA, line-averaged density of $1.5 \times 10^{19}$ m^{-3}, electron temperature of $T_{e} = 500$ eV and 30--50 s plasma duration. Plasma current was sustained and smoothly transferred from one direction to the other without loss of ionization. Plasma position control, LHW assistance, strong gas puffing and good wall condition are the key issues to have a smooth transition of plasma current. Our modelling results show that current reversal equilibrium configuration with two oppositely flowing currents in the high-field-side and the low-field-side during current reversal exists. This is in agreement with experimental measurements.}, added-at = {2010-01-27T20:57:54.000+0100}, author = {Li, Jiangang and Luo, Jiarong and Wang, Shaojie and Fu, Peng and Shen, Biao and Liu, Fukun and Wan, Baonian and Shan, Jiafang and Xu, Guosheng and Huang, Juan and Yu, Jun and Hu, Jiansheng and Yuan, Qiping and Hu, Yeming and Team, HT-7}, biburl = {https://www.bibsonomy.org/bibtex/2b81eb1532b5b80a1ec2a327709120dfa/prodrigues}, description = {Describes the ac operation of the HT-7 tokamak and presents some analytical equilibria with current reversal.}, interhash = {3e481ed9a4299520f5ea40fce223dc11}, intrahash = {b81eb1532b5b80a1ec2a327709120dfa}, journal = {Nuclear Fusion}, keywords = {ac_operation analytical current_reversal equilibrium i-mhd tokamak}, month = {August}, number = 9, numpages = {7}, pages = {1071-1077}, timestamp = {2010-01-27T20:57:54.000+0100}, title = {Quasi-steady-state ac plasma current operation in HT-7 tokamak}, url = {http://stacks.iop.org/0029-5515/47/1071}, volume = 47, year = 2007 }