Fine positioning of a poloidal probe array

T. Yamada; Y. Nagashima; S. Inagaki; Y. Kawai; M. Yagi; S. I. Itoh; T. Maruta; S. Shinohara; K. Terasaka; M. Kawaguchi; M. Fukao; A. Fujisawa; K. Itoh

doi:10.1063/1.2818796

Fine positioning of a poloidal probe array

T. Yamada, Y. Nagashima, S. Inagaki, Y. Kawai, M. Yagi, S. I. Itoh, T. Maruta, S. Shinohara, K. Terasaka, M. Kawaguchi, M. Fukao, A. Fujisawa, K. Itoh

Research output: Contribution to journal › Article › peer-review

33 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 language	English
Article number	123501
Journal	Review of Scientific Instruments
Volume	78
Issue number	12
DOIs	https://doi.org/10.1063/1.2818796
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.2818796

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@article{f24d1272fe7f423d82b5b2a8b413767c,

title = "Fine positioning of a poloidal probe array",

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.",

author = "T. Yamada and Y. Nagashima and S. Inagaki and Y. Kawai and M. Yagi and Itoh, {S. I.} and T. Maruta and S. Shinohara and K. Terasaka and M. Kawaguchi and M. Fukao and A. Fujisawa and K. Itoh",

note = "Funding Information: This work was supported by Grant-in-Aid for Specially-Promoted Research of MEXT (16002005) (Itoh Project), by the collaboration programs of NIFS (NIFS07KOAP017) and RIAM, Kyushu University, and by Grant-in-Aid for Young Scientists (B) of JSPS (19760597). ",

year = "2007",

doi = "10.1063/1.2818796",

language = "English",

volume = "78",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

number = "12",

}

TY - JOUR

T1 - Fine positioning of a poloidal probe array

AU - Yamada, T.

AU - Nagashima, Y.

AU - Inagaki, S.

AU - Kawai, Y.

AU - Yagi, M.

AU - Itoh, S. I.

AU - Maruta, T.

AU - Shinohara, S.

AU - Terasaka, K.

AU - Kawaguchi, M.

AU - Fukao, M.

AU - Fujisawa, A.

AU - Itoh, K.

N1 - Funding Information: This work was supported by Grant-in-Aid for Specially-Promoted Research of MEXT (16002005) (Itoh Project), by the collaboration programs of NIFS (NIFS07KOAP017) and RIAM, Kyushu University, and by Grant-in-Aid for Young Scientists (B) of JSPS (19760597).

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

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DO - 10.1063/1.2818796

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VL - 78

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 12

M1 - 123501

ER -

Fine positioning of a poloidal probe array

Abstract

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