Abstract In this paper, the finite current element (FCE) method used in HL-2A is described. The calculation and test results show that the error of the reconstructed boundary given by the FCE method (<3mm) is smaller than that obtained by the current filament method used before (<6mm). Even if some current elements are located out of the plasma boundary, the FCE method can also identify the plasma boundary successfully. If the location of the finite current elements is changed in a certain area, the error of the reconstructed boundary is always very small. By employing a conventional PC (Pentium 4 2.4GHz), the calculation time of one set of plasma discharge parameters does not exceed 1ms. Thus, the FCE method can identify the diverted plasma configuration quickly and accurately. This is essential and important for real-time shape control in HL-2A.
Received: 21 June 2004
Revised: 08 November 2004
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10175022).
Cite this article:
You Tian-Xue (游天雪), Yuan Bao-Shan (袁保山), Liu Li (刘莉), Li Fang-Zhu (李芳著) Plasma boundary identification in HL-2A by means of the finite current element method 2005 Chinese Physics 14 560
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
