Comparison of Supersonic Molecular Beam Injection from Both Low Field Side and High Field Side of HL-2A
Comparison of Supersonic Molecular Beam Injection from Both Low Field Side and High Field Side of HL-2A
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DOI：
10.1088/1009-0630/12/5/04
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发表时间：
2010-10
影响因子：
1.7
通讯作者：
Yao Lianghua;Z. Dawei;Feng Bei-bin;Chen Chengyuan;Zhou Yan;Han Xiao-Yu;Li Yonggao;J. Bucalossi;Duan Xu-ru
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文献类型：
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作者：
Yao Lianghua;Z. Dawei;Feng Bei-bin;Chen Chengyuan;Zhou Yan;Han Xiao-Yu;Li Yonggao;J. Bucalossi;Duan Xu-ru
超声分子束注入（SMBI）作为一种有效的聚变等离子体加料方法，已广泛应用于HL-2A等聚变装置。HL-2A上现在安装了两种不同类型的SMBI系统。一种是低场侧的电磁阀喷射器（LFS），另一种是高场侧的气动阀喷射器（HFS）。一个新的电子密度记录n？e = 4.7？1019米？在HL-2A单零偏滤器装置上获得了超过Greenwald密度极限和气体喷吹（GP）获得的最大密度3。HFS喷射系统仍在测试中，然而，其突出的燃料特性已经被观察到，例如，与LFS系统相比，它具有更高的燃料效率。在ECRH的过程中，这一优秀特征仍然被保留。
SMBI (supersonic molecular beam injection), as an effective fueling method for fusion plasmas, has been widely used on the HL-2A tokamak and other fusion devices. Two different types of SMBI system are now installed on HL-2A. One is an electromagnetic valve injector on the low field side (LFS), and the other is a pneumatic valve injector on the high field side (HFS). A new electron density record n?e = 4.7 ? 1019 m?3, which exceeds both the Greenwald density limit and the maximum density obtained by gas puffing (GP), was obtained on HL-2A with single-null-divertor operation. The HFS injection system is still under test, however, its outstanding fueling characteristics have already been observed, e.g. it has higher fueling efficiency compared to the LFS system. This excellent feature is still preserved during the process of ECRH.