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

我们首次对紧凑型环面，特别是球形托卡马克(ST)和场反转组态(FRC)之间的边界进行了研究：(1)在ST和FRC之间的边界区域中的超高βST形成，(2)NSTX ST实验中这种高βST形成的美日合作，(3)ST和FRC的联合研讨会：在东京大学举行的国际原子能机构-技术委员会会议和在华盛顿大学举行的美日FRC-ST研讨会，(4)东京大学2000年空间与实验室等离子体磁重联研讨会和(5)FRC NBI注入实验SPRIT的联合建议。根据美日协议，TS-3实验通过在FRC上施加外环形场来产生超高βST。GA表明，这个β=60-70%的ST是第一个处于第二稳定区域的高BATA ST。这一结果发表在2000年美国物理学会年度会议和国际原子能机构聚变能源会议上，并将我们引向了美国和日本在NSTX ST实验中联合进行的超高βST形成实验(普林斯顿大学)。NSTX实验获得了长达0.1s的约束时间和高达20%的β。ST-FRC边界研究受到越来越多的关注，并与大学的原子能机构--中医药中心联系在一起。东京和美日ST和FRC研讨会，第一次ST-FRC联席会议。在这些边界研究的基础上，还提出了在普林斯顿大学进行FRC和ST的新的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.