MISC

2018年3月22日

Development of the poloidal Charge eXchange Recombination Spectroscopy system in Heliotron J

  • X. X. Lu
  • ,
  • S. Kobayashi
  • ,
  • T. Harada
  • ,
  • S. Tanohira
  • ,
  • K. Ida
  • ,
  • S. Nishimura
  • ,
  • Y. Narushima
  • ,
  • D. L. Yu
  • ,
  • L. Zang
  • ,
  • K. Nagasaki
  • ,
  • S. Kado
  • ,
  • H. Okada
  • ,
  • T. Minami
  • ,
  • S. Ohshima
  • ,
  • S. Yamamoto
  • ,
  • Y. Yonemura
  • ,
  • N. Haji
  • ,
  • S. Watanabe
  • ,
  • H. Okazaki
  • ,
  • T. Kanazawa
  • ,
  • P. Adulsiriswad
  • ,
  • A. Ishizawa
  • ,
  • Y. Nakamura
  • ,
  • S. Konoshima
  • ,
  • T. Mizuuchi

記述言語
掲載種別
機関テクニカルレポート,技術報告書,プレプリント等

A Charge eXchange Recombination Spectroscopy (CXRS) system designed to<br />
measure the poloidal rotation velocity is developed in Heliotron J. The<br />
poloidal CXRS system measures the carbon emission line (C VI, n=8-7, 529.05nm)<br />
and the Doppler shift of the emission line provides the information of plasma<br />
rotation velocity. A high throughput photographic-lens monochromator (F/2.8)<br />
with 0.73nm/mm dispersion is adopted to achieve high rotation velocity and<br />
temporal resolution. Since two heating neutral beams from two tangential<br />
injectors (NBI) are used as the diagnostic beams, a wide observation range<br />
(0.26&lt;r/a&lt;0.92) is covered by 15 sightlines with a high spatial<br />
resolution(d&lt;r/a&gt; &lt; 0.06) at peripheral region (r/a&gt;0.6). The system design and<br />
the calibration method are presented. The initial results of poloidal rotation<br />
measurement show an electron diamagnetic rotation in an NBI heated plasma,<br />
while an ion diamagnetic rotation is observed when ECH is additionally applied.<br />
The evaluated radial electric field profile shows a positive Er at plasma core<br />
region in the ECH+NBI plasma, and a negative Er in the NBI heated plasma.

リンク情報
arXiv
http://arxiv.org/abs/arXiv:1803.08339
URL
http://arxiv.org/abs/1803.08339v1

エクスポート
BibTeX RIS