Modeling of global particle balance in steady-state magnetic fusion devices – Analysis of the recent data from the TRIAM-1M tokamak
Modeling of global particle balance in steady-state magnetic fusion devices – Analysis of the recent data from the TRIAM-1M tokamak
复制标题
稳态磁聚变装置中全局粒子平衡的建模 – TRIAM-1M 托卡马克的最新数据分析
DOI：
10.1016/s0022-3115(02)01419-8
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发表时间：
2003
影响因子：
3.1
通讯作者：
M. Sakamoto
中科院分区：
文献类型：
--
作者：
Y. Hirooka;M. Sakamoto
对TRIAM-1M实验数据进行了全球粒子平衡分析，采用零维四库模型计算了堆芯等离子体、溶胶区、气相和壁材中的粒子库存。对两个例子进行了研究：在8.2千兆赫较短脉冲(∼30 S)但高密度(∼10191/m~3)的低杂波CD放电和在2.45千兆赫长脉冲(∼4000 S)但低密度(∼10181/m~3)低杂波CD放电。模型计算很好地再现了核和溶质等离子体密度。并利用该模型对观测到的壁面泵浦效应进行了分析。在8.2千兆赫和2.45千兆赫时，实验测得的壁面泵浦速率分别为4×1017和4.4×10171/m~2/S，模型预测值分别为1.5×1016和1.8×10161/m~2/S。数值模拟结果表明，稳态堆芯等离子体密度随共沉积几率的增加而减小。
Global particle balance analysis has been conducted to interpret the data from TRIAM-1M experiments, using a zero-dimension four-reservoir model to calculate the particle inventories in the core plasma, SOL region, gas phase, and wall materials. Two cases have been examined: a relatively short pulse (∼30 s) but high density (∼10191/m3) LHCD discharge at 8.2 GHz; and a long pulse (∼4000 s) but low density (∼10181/m3) LHCD discharge at 2.45 GHz. Model calculations have reproduced well the core and SOL plasma densities. Also, the observed wall pumping effects have been analyzed by this model. Measured and model prediction on the wall pumping rate are 4×1017and 4.4×10171/m2/s at 8.2 GHz, and 1.5×1016and 1.8×10161/m2/s at 2.45 GHz, respectively, both relatively good agreements. Also, a parameter sensitivity check has been conducted, and modeling results clearly indicate that the steady state core plasma density decreases with increasing the codeposition probability.