Reconstruction of the TEXT-U tokamak in China

The Joint TEXT (J-TEXT) tokamak, formerly named as the TEXT/TEXT-U tokamak, operated by the University of Texas at Austin in USA, has been reconstructed in Huazhong University of Science and Technology in China. The machine has been run for two experimental campaigns since 2007. And the discharges with plasma current more than 200 kA and duration of 300 ms have been obtained. At present all sub-systems, such as PF and TF power supplies, vacuum system, diagnostics systems etc, are successfully integrated into the routine operation. The plasma position can be elaborately controlled within two centimeters. All operating behavior and limits of the J-TEXT tokamak are typical of the machine and easy understandable compared to the former TEXT/TEXT-U experimental results. (author)