Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa

S. Okamura, K. Matsuoka, S. Nishimura, M. Isobe, C. Suzuki, A. Shimuzu, K. Ida, akihide fujisawa, S. Murakami, M. Yokoyama, K. Itoh, T. Hayashi, N. Nakajima, H. Sugama, M. Wakatani, Y. Nakamura, W. Anthony Cooper

Research output: Contribution to journalArticle

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Abstract

A low aspect ratio stellarator CHS-qa with a quasi-axisymmetric configuration has been designed at NIFS, whose main objective is the experimental study of confinement improvement. The high beta equilibrium was obtained with the HINT code which does not require the assumption of nested magnetic surfaces. The equilibria with bootstrap current were calculated using the SPBSC code and their global MHD stability was evaluated with the TERPSICHORE code. The boundary structure of the magnetic field was examined to scope divertor options. A new method of calculating the neoclassical transport properties was developed for toroidal configurations with very small non-axisymmetry. The control knobs of the configuration properties are proposed for the study of improved confinement.

Original languageEnglish
Pages (from-to)575-581
Number of pages7
JournalNuclear Fusion
Volume44
Issue number5
DOIs
Publication statusPublished - May 2004
Externally publishedYes

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stellarators
configurations
knobs
low aspect ratio
transport properties
magnetic fields

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Nuclear and High Energy Physics

Cite this

Okamura, S., Matsuoka, K., Nishimura, S., Isobe, M., Suzuki, C., Shimuzu, A., ... Cooper, W. A. (2004). Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa. Nuclear Fusion, 44(5), 575-581. https://doi.org/10.1088/0029-5515/44/5/001

Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa. / Okamura, S.; Matsuoka, K.; Nishimura, S.; Isobe, M.; Suzuki, C.; Shimuzu, A.; Ida, K.; fujisawa, akihide; Murakami, S.; Yokoyama, M.; Itoh, K.; Hayashi, T.; Nakajima, N.; Sugama, H.; Wakatani, M.; Nakamura, Y.; Cooper, W. Anthony.

In: Nuclear Fusion, Vol. 44, No. 5, 05.2004, p. 575-581.

Research output: Contribution to journalArticle

Okamura, S, Matsuoka, K, Nishimura, S, Isobe, M, Suzuki, C, Shimuzu, A, Ida, K, fujisawa, A, Murakami, S, Yokoyama, M, Itoh, K, Hayashi, T, Nakajima, N, Sugama, H, Wakatani, M, Nakamura, Y & Cooper, WA 2004, 'Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa', Nuclear Fusion, vol. 44, no. 5, pp. 575-581. https://doi.org/10.1088/0029-5515/44/5/001
Okamura S, Matsuoka K, Nishimura S, Isobe M, Suzuki C, Shimuzu A et al. Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa. Nuclear Fusion. 2004 May;44(5):575-581. https://doi.org/10.1088/0029-5515/44/5/001
Okamura, S. ; Matsuoka, K. ; Nishimura, S. ; Isobe, M. ; Suzuki, C. ; Shimuzu, A. ; Ida, K. ; fujisawa, akihide ; Murakami, S. ; Yokoyama, M. ; Itoh, K. ; Hayashi, T. ; Nakajima, N. ; Sugama, H. ; Wakatani, M. ; Nakamura, Y. ; Cooper, W. Anthony. / Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa. In: Nuclear Fusion. 2004 ; Vol. 44, No. 5. pp. 575-581.
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