Recent results of divertor simulation research using an end-cell of a large tandem mirror device

Y. Nakashima, H. Takeda, K. Ichimura, K. Hosoi, M. Sakamoto, M. Hirata, M. Ichimura, R. Ikezoe, T. Imai, T. Ishii, T. Kariya, I. Katanuma, J. Kohagura, R. Minami, T. Numakura, H. Ueda, M. Yoshikawa, N. Asakura, T. Furuta, A. HatayamaY. Hirooka, S. Kado, S. Masuzaki, H. Matsuura, S. Nagata, N. Nishino, N. Ohno, A. Sagara, T. Shikama, M. Shoji, M. Toma, A. Tonegawa, Y. Ueda

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Abstract

This paper describes the results of characterization of high heat and particle fluxes produced at the end-cell of the large tandem mirror GAMMA 10 and of the initial plasma-irradiation experiments. In the case of ICRF plasmas, the heat flux of 0.8 MW/m2 and the particle flux of 4 × 10 22/m2 s were achieved at the end-mirror exit. The heat flux increases with the ICRF power and has a linear relationship with the stored energy. Direct ion energy analysis clarified that the parallel ion temperature can be controlled from 100 eV to 400 eV by changing the ICRF power. Additional plasma heating using another ICRF system in the anchor-cell significantly increases the particle flux, which gives a clear prospect of generating the higher particle flux by applying additional ICRF heating in the neighboring cells. The initial results of the plasma-gas-material interactions on a new V-shaped tungsten target were also reported.

Original languageEnglish
Pages (from-to)S738-S741
JournalJournal of Nuclear Materials
Volume438
Issue numberSUPPL
DOIs
Publication statusPublished - 2013 Jan 1

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Nakashima, Y., Takeda, H., Ichimura, K., Hosoi, K., Sakamoto, M., Hirata, M., Ichimura, M., Ikezoe, R., Imai, T., Ishii, T., Kariya, T., Katanuma, I., Kohagura, J., Minami, R., Numakura, T., Ueda, H., Yoshikawa, M., Asakura, N., Furuta, T., ... Ueda, Y. (2013). Recent results of divertor simulation research using an end-cell of a large tandem mirror device. Journal of Nuclear Materials, 438(SUPPL), S738-S741. https://doi.org/10.1016/j.jnucmat.2013.01.157