To study helium(He)supersonic molecular beam injection(SMBI)into H-mode tokamak plasma,a simplified multicomponent-plasma model under the assumption of quasi-neutral condition is developed and implemented in the frame...To study helium(He)supersonic molecular beam injection(SMBI)into H-mode tokamak plasma,a simplified multicomponent-plasma model under the assumption of quasi-neutral condition is developed and implemented in the frame of BOUT++.The simulation results show that He species propagate inwards after He SMBI,and are deposited at the bottom of the pedestal due to intensive ionization and weak spreading speed.It is found that almost all injected helium particles strip off all the bounded electrons.He species interact intensively with background plasma along the injection path during He SMBI,making deuterium ion density profile drop at the He-deposited location and resulting in a large electron temperature decreasing,but deuterium ion temperature decreasing a little at the top of the pedestal.展开更多
基金Chunhui Program of the Ministry of Education of China(Grant No.Z2017091)the Sichuan Provincial Science Foundation for Distinguished Young Leaders of Disciplines in Science and Technology,China(Grant Nos.2019JDJQ0051 and 2019JDJQ0050)+2 种基金the National Natural Science Foundation of China(Grant Nos.11575055 and 11605143)the Fund for Young Scientists of China,the Open Research Subjects of the Key Laboratory of Advanced Computation in Xihua University,China(Grant Nos.szjj2017-011 and szjj2017-012)the Young Scholarship Plan of Xihua University,China(Grant No.0220170201).
文摘To study helium(He)supersonic molecular beam injection(SMBI)into H-mode tokamak plasma,a simplified multicomponent-plasma model under the assumption of quasi-neutral condition is developed and implemented in the frame of BOUT++.The simulation results show that He species propagate inwards after He SMBI,and are deposited at the bottom of the pedestal due to intensive ionization and weak spreading speed.It is found that almost all injected helium particles strip off all the bounded electrons.He species interact intensively with background plasma along the injection path during He SMBI,making deuterium ion density profile drop at the He-deposited location and resulting in a large electron temperature decreasing,but deuterium ion temperature decreasing a little at the top of the pedestal.
