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First measurement of time evolution of electron temperature profiles with Nd:YAG Thomson scattering system on Heliotron J.
Kenmochi, N; Minami, T; Takahashi, C; Tei, S; Mizuuchi, T; Kobayashi, S; Nagasaki, K; Nakamura, Y; Okada, H; Kado, S; Yamamoto, S; Ohshima, S; Konoshima, S; Shi, N; Zang, L; Ohtani, Y; Kasajima, K; Sano, F.
Afiliação
  • Kenmochi N; Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Minami T; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Takahashi C; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Tei S; Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Mizuuchi T; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Kobayashi S; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Nagasaki K; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Nakamura Y; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Okada H; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Kado S; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Yamamoto S; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Ohshima S; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Konoshima S; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Shi N; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Zang L; Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Ohtani Y; Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Kasajima K; Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
  • Sano F; Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
Rev Sci Instrum ; 85(11): 11D819, 2014 Nov.
Article em En | MEDLINE | ID: mdl-25430232
ABSTRACT
A NdYAG Thomson scattering system has been developed for Heliotron J. The system consists of two 550 mJ 50 Hz lasers, large collection optics, and 25 radial channel (∼1 cm spatial resolution) interference polychromators. This measurement system achieves a S/N ratio of ∼50 for low-density plasma (ne ∼ 0.5 × 10(19) m(-3)). A time evolution of electron temperature profiles was measured with this system for a high-intensity gas-puff (HIGP) fueling neutral-beam-injection plasma. The peripheral temperature of the higher-density phase after HIGP recovers to the low-density pre-HIGP level, suggesting that improving particle transport in the HIGP plasma may be possible.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2014 Tipo de documento: Article
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2014 Tipo de documento: Article