Reconstruction method of local density fluctuation for heavy ion beam probe measurements

被引：7
|
作者：
Nakano, H. [1 ]
Fujisawa, A. [1 ]
Shimizu, A. [1 ]
Ohshima, S. [1 ]
Iguchi, H. [1 ]
Yoshimura, Y. [1 ]
Minami, T. [1 ]
机构：
[1] Natl Inst Fus Sci, Toki 5095292, Japan
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2007年 / 78卷 / 06期
关键词：
D O I：
10.1063/1.2745233
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Heavy ion beam probe (HIBP) is an excellent diagnostic to measure the density and potential fluctuations simultaneously in magnetically confined plasmas. However, it has been well known that the density fluctuation measured with the HIBP is not local but contains the fluctuations along the beam orbits. In this article, a method is proposed to evaluate local density fluctuation in the HIBP measurements by removing the well-known path integral effects. The reconstructed density fluctuation amplitude and power spectrum are shown, for example, by applying the proposed method on the density fluctuation measurement data obtained in a toroidal helical plasma, Compact Helical System. (c) 2007 American Institute of Physics.
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页数：7
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