High performance experiments on high pressure supersonic molecular beam injection in the HL-1M tokamak
High performance experiments on high pressure supersonic molecular beam injection in the HL-1M tokamak
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DOI：
10.1088/0029-5515/44/3/007
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发表时间：
2004-02
期刊：
影响因子：
3.3
通讯作者：
L. Yao;J. Dong;Yan Zhou;B. Feng;Jianyong Cao;W. Li;Zhen Feng;Jiquan Zhang;W. Hong;Z. Cui;E. Wang;Y. Liu
中科院分区：
文献类型：
--
作者：
L. Yao;J. Dong;Yan Zhou;B. Feng;Jianyong Cao;W. Li;Zhen Feng;Jiquan Zhang;W. Hong;Z. Cui;E. Wang;Y. Liu
超声分子束注入（SMBI）是首次提出并在HL-1装置上得到验证，并在HL-1 M装置上得到成功应用。最近，SMBI实验获得了新的结果，通过增加气体压力从0.5到超过1.0 MPa。高压多脉冲SMBI获得了类似于多弹丸注入过程中密度演化行为的阶梯状密度增量。这证明了SMBI作为稳定状态操作的有前途的加燃料工具的有效性。根据Hα发射强度的等值线图，粗略地测量了高压SMBI的穿透深度和喷射速度。结果表明，注入粒子可以穿透到等离子体的核心区域。高压SMBI粒子在等离子体中的穿透速度估计约为1200 m s-1。此外，束内的团簇可能在更深的注入中起重要作用。
Supersonic molecular beam injection (SMBI) was first proposed and demonstrated on the HL-1 tokamak and was successfully developed and used on HL-1M. Recently, new results of SMBI experiments were obtained by increasing the gas pressure from 0.5 to over 1.0 MPa. A stair-shaped density increment was obtained with high-pressure multi-pulse SMBI that was similar to the density evolution behaviour during multi-pellet injection. This demonstrated the effectiveness of SMBI as a promising fuelling tool for steady-state operation. The penetration depth and injection speed of the high-pressure SMBI were roughly measured from the contour plot of the Hα emission intensity. It was shown that injected particles could penetrate into the core region of the plasma. The penetration speed of high-pressure SMBI particles in the plasma was estimated to be about 1200 m s−1. In addition, clusters within the beam may play an important role in the deeper injection.