Progress of divertor simulation research toward the realization of detached plasma using a large tandem mirror device

Y. Nakashima, H. Takeda, K. Ichimura, K. Hosoi, K. Oki, M. Sakamoto, M. Hirata, M. Ichimura, R. Ikezoe, T. Imai, M. Iwamoto, Y. Hosoda, I. Katanuma, T. Kariya, S. Kigure, J. Kohagura, R. Minami, T. Numakura, S. Takahashi, M. YoshikawaN. Asakura, M. Fukumoto, A. Hatayama, Y. Hirooka, S. Kado, H. Kubo, S. Masuzaki, H. Matsuura, S. Nagata, N. Nishino, N. Ohno, A. Sagara, T. Shikama, M. Shoji, A. Tonegawa, Y. Ueda

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Abstract This paper describes the results of the experiments performed on Tandem Mirror device GAMMA 10/PDX mainly using a new "divertor simulation experimental module (D-module)" installed on one of the end mirror exits which is specially designed to investigate the physics of plasma detachment. The additional ICRF heating in the anchor-cells, connected to both ends of the central-cell, significantly increases the density in the both cells, which attained the generation of the highest particle flux up to 1023 particles/s m2 at the end-mirror exit. H2 and noble gas injection to enhance the radiation cooling in D-module was performed and a remarkable reduction of the electron temperature (from few tens eV to <3 eV) on the target plate were successfully achieved associated with the strong reduction of particle and heat flux. A significant effect of simultaneous injection with hydrogen and noble gases for detached plasma formation was recognized for the first time.

Original languageEnglish
Article number48794
Pages (from-to)537-540
Number of pages4
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - 2015 Jul 22

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Progress of divertor simulation research toward the realization of detached plasma using a large tandem mirror device'. Together they form a unique fingerprint.

  • Cite this

    Nakashima, Y., Takeda, H., Ichimura, K., Hosoi, K., Oki, K., Sakamoto, M., Hirata, M., Ichimura, M., Ikezoe, R., Imai, T., Iwamoto, M., Hosoda, Y., Katanuma, I., Kariya, T., Kigure, S., Kohagura, J., Minami, R., Numakura, T., Takahashi, S., ... Ueda, Y. (2015). Progress of divertor simulation research toward the realization of detached plasma using a large tandem mirror device. Journal of Nuclear Materials, 463, 537-540. [48794]. https://doi.org/10.1016/j.jnucmat.2014.12.063