High-β plasma formation and observation of peaked density profile in RT-1

H. Saitoh, Z. Yoshida, J. Morikawa, Y. Yano, T. Mizushima, Y. Ogawa, M. Furukawa, Y. Kawai, K. Harima, Y. Kawazura, Y. Kaneko, K. Tadachi, S. Emoto, M. Kobayashi, T. Sugiura, G. Vogel

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

High-β ECH plasma is generated and stably sustained in a magnetospheric configuration, the Ring Trap 1 (RT-1) device, generated by a levitated dipole field magnet. Geomagnetic-field compensation and optimized operation have realized drastic improvements in plasma properties. The maximum local β value has reached 70% and the pressure profiles have a rather steep gradient near the superconducting magnet. Electrons of the high-β plasma typically consist of 70% hot (∼50 keV) and the rest of cold populations. Confinement time of the hot component plasma is 0.5 s with the optimized neutral gas pressure. By removing the coil support structure, the peaked density profile is observed in the strong field region.

Original languageEnglish
Article number063034
JournalNuclear Fusion
Volume51
Issue number6
DOIs
Publication statusPublished - 2011 Jun 1

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'High-β plasma formation and observation of peaked density profile in RT-1'. Together they form a unique fingerprint.

  • Cite this

    Saitoh, H., Yoshida, Z., Morikawa, J., Yano, Y., Mizushima, T., Ogawa, Y., Furukawa, M., Kawai, Y., Harima, K., Kawazura, Y., Kaneko, Y., Tadachi, K., Emoto, S., Kobayashi, M., Sugiura, T., & Vogel, G. (2011). High-β plasma formation and observation of peaked density profile in RT-1. Nuclear Fusion, 51(6), [063034]. https://doi.org/10.1088/0029-5515/51/6/063034