The first in-vessel cryopump for EAST divertor experiment
The first in-vessel cryopump for EAST divertor experiment
复制标题
DOI：
10.1016/j.fusengdes.2010.04.015
复制
发表时间：
2010-12
影响因子：
1.7
通讯作者：
Q. Hu;D. Yao;G. Luo;Hai Xie;Changqiao Xu;Junchun Li;X. M. Wang
中科院分区：
文献类型：
--
作者：
Q. Hu;D. Yao;G. Luo;Hai Xie;Changqiao Xu;Junchun Li;X. M. Wang
为了进行偏滤器实验，2008年在EAST托卡马克上安装了一个容器内低温泵。它可以限制气体杂质从偏滤器区域循环到核心等离子体区域，并提供环形分布的高抽运速度的等离子体密度控制。文中对其设计和制造作了基本描述。除激光切割、等离子喷涂和管材退火等工序外，大部分零件都是在ASIPP中制造的。对于这第一个容器内低温泵，液氦和氮气供应系统进行了升级。对该低温泵进行的功能测试表明，该低温泵具有良好的辐射屏蔽和泵浦能力。利用这种装置进行偏滤器物理研究的活动取得了成功。
To operate divertor experiment, an in-vessel cryopump was installed on the EAST tokamak in 2008. It can limit gas impurity recycling from divertor region into core plasma area, and provide plasma density control with toroidally distributed high pumping speed. In this paper, the designing and manufacturing is basically described. Most parts are manufactured in ASIPP, except for some procedures such as laser cutting, plasma-spray coating, and pipe annealing. For this first in-vessel cryopump, liquid helium and nitrogen supplying system is upgraded. Functional tests for this cryopump show a good radiation shield and pumping capability. A campaign utilizing this device for divertor physics research has been successful.