A Supersonic Molecular Beam Injection System on the J-TEXT Tokamak
A Supersonic Molecular Beam Injection System on the J-TEXT Tokamak
复制标题
DOI：
10.1007/s10894-015-9918-3
复制
发表时间：
2015-04
影响因子：
1.1
通讯作者：
J. Xiao;Z. Yang;Meng Liu;G. Zhuang;X. Pan;C. Zhang;Z. J. Wang
中科院分区：
文献类型：
--
作者：
J. Xiao;Z. Yang;Meng Liu;G. Zhuang;X. Pan;C. Zhang;Z. J. Wang
超音速分子束注入（SMBI）系统是J-TEXT托卡马克的一种新的加料方式。根据实验需要，该系统可提供压力范围0.2- 2.0MPa、脉宽0.2 ~ 10 ms的各种超声速气体射流。本文详细介绍了该系统的结构，包括喷油器、控制器和气路。控制器输出的波形显示了系统的快速响应。真空室内压力曲线的演变表明系统工作良好。试验结果还表明，SMBI的粒子数与气体压力和脉冲持续时间的乘积成线性关系。对于0.5、1.0和1.66MPa的不同压强，束流速度分别约为0.9、1.2和1.4km/s。此外，还进行了SMBI系统的加燃料实验。密度的显著增加证明了LSMBI和HSMBI的加燃料能力。
A supersonic molecular beam injection (SMBI) system has been developed as a new fueling method for the J-TEXT tokamak. According to experimental needs, the system can provide various supersonic gas jets with the pressure range 0.2–2.0 MPa and pulse duration 0.2–10 ms. In this paper, the structure of the system is described in detail, including injectors, controller and gas line. Wave forms of the controller output show a fast response of the system. The evolution of pressure curve in the vacuum chamber indicates the system works well. Test results also show that the particle number of SMBI is linear proportional to the product of gas pressure and pulse duration. For different pressure of 0.5, 1.0 and 1.66 MPa, the beam velocities are estimated about 0.9, 1.2 and 1.4 km/s, respectively. Besides, fuelling experiments with the SMBI system are performed. Significant density increase demonstrates the fuelling abilities of both LSMBI and HSMBI.