Comparative Study of High-Beta/Low-q Compact Torus Plasmas

我们首次对紧凑环面进行了边界研究，特别是在球形托卡马克（ST）和场反转组态（FRC）之间的边界研究：(1)在ST和FRC之间的边界区形成超高β ST，(2)美日合作在NSTX ST实验中形成这种高β ST， (3) ST和FRC联合研讨会。东京大学国际原子能机构技术委员会会议（TCM）和华盛顿大学美日FRC- st研讨会(4)2000年东京大学空间磁重联和实验室等离子体研讨会(5)FRC NBI注入实验SPRIT的联合提案。基于美日协议，TS-3实验通过对FRC施加外部环面场产生超高β ST。东京大学，普林斯顿大学和GA的理论合作研究表明，β=60-70%的ST是第二稳定体系中的第一个高bata ST。这一结果在美国物理学会1999年年会和国际原子能机构2000年聚变能会议上发表，并引导我们在NSTX ST实验（普林斯顿大学）中进行了美日联合超高β ST形成实验。NSTX实验获得了长达0.1s的约束时间和高达20%的贝塔系数。ST-FRC边界研究受到越来越多的关注，并与东京大学原子能机构- tcm和ST-FRC美日讲习班（ST-FRC第一次联合会议）联系在一起。普林斯顿大学也在这些边界研究的基础上提出了新的FRC和ST的NBI实验。

We made the first boundary study of compact toroids, especially between spherical tokamak (ST) and Field-Reversed Configuration (FRC) : (1) ultra-high-beta ST formation in the boundary regime between ST and FRC, (2) US-Japan collaboration for this high-beta ST formation in NSTX ST experiment, (3) joint symposiums of ST and FRC : IAEA-Technical Committee Meeting (TCM) at Univ.Tokyo and US-Japan FRC-ST Workshop at Univ.Washington, (4) University of Tokyo Symposium 2000 on Magnetic Reconnection in Space and Laboratory Plasmas and (5) joint proposal of FRC NBI injection experiment SPRIT.Based on the US-Japan agreement, the TS-3 experiment produced the ultra-high beta ST by applying the external toroidal field to an FRC.The theoretical collaboration study among Univ.Tokyo, Princeton Univ. and GA revealed that this ST with β=60-70% is the first high-bata ST in the second stability regime. This result was reported in in the Annual Meeting 99 of American Physical Society and IAEA Fusion Energy Conference 2000 and also lead us to the US-Japan joint experiment of ultra-high beta ST formation in NSTX ST experiment (Princeton Univ.). The NSTX experiment attained both the confinement time as long as 0.1s and beta as high as 20%. The ST-FRC boundary research has received increased attention and was connected to the IAEA-TCM at Univ. Tokyo and the US-Japan Workshop of ST and FRC, the first ST-FRC joint meeting. The new NBI experiment of FRC and ST was also proposed in Princeton Univ based on those boundary study.