超声分子束束流特性实验研究  

Experimental study on the characteristics of supersonic molecular beam injection

作　　者：殷娇 肖国梁 陈程远 冯北滨 朱毅仁 薛冠群 张轶泼 聂林 石中兵 钟武律 YIN Jiao;XIAO GuoLiang;CHEN ChengYuan;FENG BeiBin;ZHU YiRen;XUE GuanQun;ZHANG YiPo;NIE Lin;SHI ZhongBing;ZHONG WuLyu(Southwestern Institute of Physics,Chengdu 610225,China;School of Physics,Dalian University of Technology,Dalian 116081,China)

机构地区：[1]核工业西南物理研究院,成都610225 [2]大连理工大学物理学院,大连116081

出　　处：《中国科学：技术科学》2023年第11期1953-1961,共9页Scientia Sinica(Technologica)

基　　金：国家重点研发计划(编号:2022YFE03060001);国家自然科学基金(批准号:U21A20440和12105086)资助项目。

摘　　要：超声分子束注入(supersonic molecular beam injection, SMBI)是磁约束核聚变装置中的一种等离子体加料技术.为进一步优化SMBI束流特性、提升SMBI加料性能,本文利用纹影诊断系统开展了不同工况下的注入器测试实验,并对束流特性参数依赖性开展了研究.研究结果表明,束流寂静区长度(又称束流注入有效距离)与束流发散半角依赖于系统工况及注入器特征参数,且本文给出了束流特性参数的定量变化规律.此外,普通圆孔注入器与自研一体式注入器的对比测试结果表明,自研的一体式注入器在束流注入有效距离和束流聚束性能上均优于普通圆孔注入器.该研究工作为不同磁约束核聚变装置上的超声分子束注入器设计和束流优化提供了数据支撑和参考.Supersonic molecular beam injection(SMBI) emerges as an efficient fueling method for magnetic fusion plasma. In this work,injector tests were performed under various working conditions using a schlieren diagnostic system. Additionally, the parameter dependence of beam characteristics was investigated to optimize the supersonic molecular beam's(SMB) characteristics and improve its fueling performance. The results show that the length of the zone of silence and the divergence angle of the beam is affected by system conditions and injector characteristic parameters. Besides, this paper provides the quantitative change law of the beam characteristic parameters. Furthermore, comparisons between the ordinary round-hole injector and the self-developed integrated injector reveal that the self-developed integrated injector outperforms the ordinary round-hole injector in terms of effective beam injection distance and beam aggregation performance. Therefore, this study creates a database and a reference for supersonic molecular beam injector design and beam optimization on various devices.

关 键 词：超声分子束注入 纹影 注入器 束流测量 

分 类 号：TL6[核科学技术—核技术及应用]