The joint TEXT (J-TEXT) tokamak, formerly TEXT/TEXT-U tokamak, operatedby the University of Texas at Austin in USA, has been re-built up in Huazhong University ofScience and Technology in China. The machine has been run for two experimental campaignssince 2007. Discharges with plasma current beyond 200 kA and duration of 300 ms have beenobtained. At present all sub-systems, such as poloidal field (PF) and toroidal field (TF) powersupplies, vacuum system, diagnostics systems etc, are successfully integrated into the routine operation.The plasma position can be elaborately controlled within two centimeters. The operationalscenario of J-TEXT are typical of the machine and easily understandable compared to the formerTEXT/TEXT-U results.
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