Design of carbon sheet pump for LHD and demonstration of hydrogen pumping
Design of carbon sheet pump for LHD and demonstration of hydrogen pumping
复制标题
铲运机碳板泵设计及抽氢演示
DOI：
10.1016/0022-3115(94)00553-2
复制
发表时间：
1994
影响因子：
3.1
通讯作者：
O. Motojima
中科院分区：
文献类型：
--
作者：
A. Sagara;H. Suzuki;N. Ohyabu;O. Motojima
介绍了大型螺旋装置(LHD)项目中首次提出的碳板泵(CSP)的设计，目的是在低总回收率的情况下实现高等离子体性能。C/C复合材料的CSP片安装在偏滤器板附近的容器壁上，工作在(1)泵浦电荷交换(CX)快氢中性体，在总持续时间约为100 S的时间内，在低于200℃的温度下将它们捕获到碳的次表层中，(2)在主放电之间的一段时间内，通过在800℃以上的温度直接焦耳加热碳片来脱气所捕获的氢，然后(3)冷却到低于200℃的工作温度。首次在氢辉放电室中成功地进行了CSP实验。
The first design of Carbon Sheet Pump (CSP) proposed in the Large Helical Device (LHD) project to achieve high plasma performances with low overall recycling ratio is presented. The CSP sheets of C/C composite are designed to be mounted on the vessel wall near the divertor plate, and operated in the cycle of (1) pumping of charge-exchanged (CX) fast H neutrals by trapping them in the sub-surface layers of the carbon at temperatures below 200°C in the total duration time of about 100 s, (2) degassing of trapped hydrogen by direct Joule heating of the carbon sheet at a temperature above 800°C in a period between main discharges, and then (3) cooling down to the operation temperature below 200°C. The first demonstration of CSP carried out successfully in a hydrogen glow discharge chamber is presented.