%A Sheng-Bo Zhao(赵胜波), Hui-Dong Zhuang(庄会东), Jing-Sheng Yuan(元京升), De-Hao Zhang(张德皓),Li Li(黎立), Long Zeng(曾龙), Da-Long Chen(陈大龙), Song-Tao Mao(毛松涛), Ming Huang(黄明),Gui-Zhong Zuo(左桂忠), and Jian-Sheng Hu(胡建生) %T Comparison of different noble gas injections by massive gas injection on plasma disruption mitigation on Experimental Advanced Superconducting Tokamak %0 Journal Article %D 2023 %J Chin. Phys. B %R 10.1088/1674-1056/acc1d6 %P 75207-075207 %V 32 %N 7 %U {https://cpb.iphy.ac.cn/CN/abstract/article_125890.shtml} %8 2023-06-15 %X Massive gas injection (MGI) is a traditional plasma disruption mitigation method. This method directly injected massive gas into the pre-disruption plasma and had been developed on the Experimental Advanced Superconducting Tokamak (EAST). Different noble gas injection experiments, including He, Ne, and Ar, were performed to compare the mitigation effect of plasma disruption by evaluating the key parameters such as flight time, pre-thermal quench (pre-TQ), and current quench (CQ). The flight time was shorter for low atomic number (Z) gas, and the decrease in flight time by increasing the amount of gas was insignificant. However, both pre-TQ and CQ durations decreased considerably with the increase in gas injection amount. The effect of atomic mass on pre-TQ and CQ durations showed the opposite trend. The observed trend could help in controlling CQ duration in a reasonable area. Moreover, the analysis of radiation distribution with different impurity injections indicated that low Z impurity could reduce the asymmetry of radiation, which is valuable in mitigating plasma disruption. These results provided essential data support for plasma disruption mitigation on EAST and future fusion devices.