Fine positioning of a poloidal probe array

Takuma Yamada, Yoshihiko Nagashima, Inagaki Shigeru, Y. Kawai, M. Yagi, Sanae Itoh, T. Maruta, S. Shinohara, Kenichiro Terasaka, M. Kawaguchi, M. Fukao, akihide fujisawa, K. Itoh

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Multipoint detection is an essential requirement for investigating plasma turbulence which is a highly nonlinear phenomenon in space and time. We have fabricated an array of 64-channel poloidal probes surrounding the linear cylindrical plasma named LMD-U in order to study turbulence properties, particularly the nonlinear mode couplings, in the domain of poloidal wave number and frequency. However, misalignments of probe tips produce spurious modes, which do not exist in the real plasma, to distort the precise wave number measurements. The paper presents the description of the 64-channel poloidal probe array with means to adjust the probe positions, with discussion on the effects of the misalignments on the wave number measurements.

Original languageEnglish
Article number123501
JournalReview of Scientific Instruments
Volume78
Issue number12
DOIs
Publication statusPublished - Dec 1 2007

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positioning
probes
misalignment
Plasma turbulence
Plasmas
cylindrical plasmas
plasma turbulence
coupled modes
Turbulence
turbulence
requirements

All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Fine positioning of a poloidal probe array. / Yamada, Takuma; Nagashima, Yoshihiko; Shigeru, Inagaki; Kawai, Y.; Yagi, M.; Itoh, Sanae; Maruta, T.; Shinohara, S.; Terasaka, Kenichiro; Kawaguchi, M.; Fukao, M.; fujisawa, akihide; Itoh, K.

In: Review of Scientific Instruments, Vol. 78, No. 12, 123501, 01.12.2007.

Research output: Contribution to journalArticle

Yamada, T, Nagashima, Y, Shigeru, I, Kawai, Y, Yagi, M, Itoh, S, Maruta, T, Shinohara, S, Terasaka, K, Kawaguchi, M, Fukao, M, fujisawa, A & Itoh, K 2007, 'Fine positioning of a poloidal probe array', Review of Scientific Instruments, vol. 78, no. 12, 123501. https://doi.org/10.1063/1.2818796
Yamada, Takuma ; Nagashima, Yoshihiko ; Shigeru, Inagaki ; Kawai, Y. ; Yagi, M. ; Itoh, Sanae ; Maruta, T. ; Shinohara, S. ; Terasaka, Kenichiro ; Kawaguchi, M. ; Fukao, M. ; fujisawa, akihide ; Itoh, K. / Fine positioning of a poloidal probe array. In: Review of Scientific Instruments. 2007 ; Vol. 78, No. 12.
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