Physics study on 3-D equilibrium plasmas with high-speed 2-D imaging diagnostics

2014 Fiscal Year Final Research Report

• Project/Area Number: 24740368
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plasma science
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: SANPEI AKIO 京都工芸繊維大学, 工芸科学研究科, 講師 (90379066)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 画像計測 / 核燃焼プラズマ / RFP / 磁場閉じ込め / 自己組織化 / MHD緩和 / トロイダルプラズマ

Outline of Final Research Achievements

We have developed an soft X-ray (SXR) imaging diagnostic system that uses multiple pin-hole SXR cameras together with high-speed cameras to record the time evolution of the SXR images from the tangential and vertical directions simultaneously for studying the dynamic structures of 3-D SXR emissivity in low-A reversed field pinch (RFP). By calculating the magnetic topology using equilibrium reconstruction, field line tracing and Computed Tomography from obtained experimental images during a single mode dominant phase, we identify the helically deformed nested flux surfaces.
We have also developed a 2-D electron temperature diagnostic system, which consists of a SXR camera with two pin holes for two-kinds of absorber foils, combined with a high-speed camera. We have succeeded in distinguishing electron temperature image in quasi-single helicity from that in multi-helicity RFP states.

Free Research Field

プラズマ科学