Keda Torus eXperiment (KTX): A new Reversed Field Pinch program in China*

As a natural extension of China Magnetic Confinement Fusion program, an advanced RFP device, Keda Torus eXperiment is now been proposed in University of Science and Technology of China. The significant parameters of KTX are: the major radius 1.4 m, the minor radius 0.4 m, the plasma current 1 MA, the plasma pulse 30-100 ms and the plasma density 2$\times $10$^{19}$m$^{-3}$. In the design phase, lots of considerations have been paid to ensure the unique features of KTX. The aspect ratio is particularly selected to achieve the single helical mode. It is also good for the scaling research of the RFP confinement. The thin modular shell structure with the combination of stainless steel and copper is good for the potential research of different wall conditions, and such structure guarantees a better proximity to the plasma. The coil configuration has been optimized for future researches of Oscillation Field Current Drive and Pulsed Parallel Current Drive. KTX will address the ITER relevant issues and some fundamental issues in space and astro-plasmas.