2D spatial profile measurements of potential fluctuation with heavy ion beam probe on the Large Helical Device

被引：5
|
作者：
Shimizu, A. [1 ]
Ido, T. [1 ,2 ]
Nishiura, M. [3 ]
Kato, S. [1 ]
Ogawa, K. [1 ,4 ]
Takahashi, H. [1 ,4 ]
Igami, H. [1 ]
Yoshimura, Y. [1 ]
Kubo, S. [1 ]
Shimozuma, T. [1 ]
机构：
[1] Natl Inst Fus Sci, 322-6 Oroshi, Toki, Gifu 5095292, Japan
[2] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
[3] Univ Tokyo, Grad Sch Frontier Sci, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778561, Japan
[4] Grad Univ Adv Studies SOKENDAI, Dept Fus Sci, 322-6 Oroshi, Toki, Gifu 5095292, Japan
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2016年 / 87卷 / 11期
关键词：
TRANSPORT;
D O I：
10.1063/1.4963908
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Two-dimensional spatial profiles of potential fluctuation were measured with the heavy ion beam probe (HIBP) in the Large Helical Device (LHD). For 2D spatial profile measurements, the probe beam energy has to be changed, which requires the adjustment of many deflectors in the beam transport line to optimize the beam trajectory, since the transport line of LHD-HIBP system is long. The automatic beam adjustment system was developed, which allows us to adjust the beam trajectory easily. By analyzing coherence between potential fluctuation and magnetic probe signal, the noise level of the mode power spectrum of the potential fluctuation can be reduced. By using this method, the 2D spatial profile of potential fluctuation profile was successfully obtained. Published by AIP Publishing.
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页数：4
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