Measurements of electron density profile characteristics in various kinds of plasma configurations in the TS-3 plasma merging device

• Hayashiya Hitoshi

  The University of Tokyo

• Katsurai Makoto

  The University of Tokyo

Bibliographic Information

Other Title

• コンパクトトーラス合体実験装置TS-3における各種プラズマ配位の電子密度分布特性の計測
• コンパクトトーラス ガッタイ ジッケン ソウチ TS 3 ニ オケル カクシュ プラズマハイイ ノ デンシ ミツド ブンプ トクセイ ノ ケイソク

Abstract

The measurements and the comparative study have been performed on electron density profiles focusing on the electron density gradient near the magnetic separatrix in various kinds of plasma confinements such as ST, spheromak and RFP in the TS-3 device. A CO₂ laser interferometer using a glass tube to clear the path for the laser was introduced to measure the electron density profile with time resolution. It was shown that ST with a high q value at the plasma edge (q:safety factor) has a larger electron density gradient than that of low q plasma confinements such as spheromak and RFP. Especially, the ST with edge q value greater than about 2 showed a large electron density gradient at the edge. The idea that the j×B force profile of the higher q ST could sustain the higher thermal pressure supports these results.

Journal

• IEEJ Transactions on Fundamentals and Materials

  IEEJ Transactions on Fundamentals and Materials 122 (6), 569-574, 2002

  The Institute of Electrical Engineers of Japan

Keywords

• Spherical torus
• Compact torus
• Electron density profile
• TS-3
• Laser interferometer

Details

• CRID: 1390001204600011776
• NII Article ID: 130005404072
• NII Article ID: 10008510192
• NII Book ID: AN10136312
• DOI: 10.1541/ieejfms.122.569
• ISSN: 13475533
• ISSN: 03854205
• NDL BIB ID: 6174866
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6174866
• Web Site: https://www.jstage.jst.go.jp/article/ieejfms/122/6/122_6_569/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed