Measurement of radial correlation lengths of electron density fluctuations in heliotron J using O-mode reflectometry

Niels Smith; Kazunobu Nagasaki; Josefine H.E. Proll; Hiroyuki Okada; Takashi Minami; Shin Ichiro Kado; Shinji Kobayashi; Shinsuke Ohshima; Shigeru Konoshima; Tohru Mizuuchi; Yuji Nakamura; Akihiro Ishizawa; Tsuyoshi Tomita; Takeshi Fukuda; Yasuto Kondo

doi:10.1585/PFR.15.1202054

Measurement of radial correlation lengths of electron density fluctuations in heliotron J using O-mode reflectometry

Niels Smith (Corresponding author)
, Kazunobu Nagasaki
, Josefine H.E. Proll
, Hiroyuki Okada
, Takashi Minami
, Shin Ichiro Kado
, Shinji Kobayashi
, Shinsuke Ohshima
, Shigeru Konoshima
, Tohru Mizuuchi
, Yuji Nakamura
, Akihiro Ishizawa
, Tsuyoshi Tomita
, Takeshi Fukuda
, Yasuto Kondo

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

2 Citaten (Scopus)

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The radial correlation length L_r of electron density fluctuations has been measured using a two-channel Omode reflectometer system in the helical-axis fusion plasma experimental device Heliotron J. The experimental results show that L_r is around 1.4 n 0.7mm in three different magnetic field bumpiness configurations (i.e. low, medium and high) for the low-density electron cyclotron heating (ECH) discharges. In high-density neutral beam injection (NBI) discharges with HIGP and pellet injection, L_r is found to be around 1 n 0.2 mm.

Originele taal-2	Engels
Artikelnummer	2054
Aantal pagina's	2
Tijdschrift	Plasma and Fusion Research
Volume	15
DOI's	https://doi.org/10.1585/PFR.15.1202054
Status	Gepubliceerd - 6 aug. 2020

Financiering

The authors are grateful to the Heliotron J experiment group for their support. This work was carried out with support from the auspices of the Collaboration Program of the Laboratory for Complex Energy Processes, IAE, Kyoto University, the NIFS Collaborative Research Program (NIFS08KAOR010, NFIS10KUHL030), a Grant-in-Aid for Scientific Research, MEXT, and “PLADys” JSPS Core-to-Core Program, A. Advanced Research Networks. This work has been carried out within the framework of the EUROfusion Consortium and has received funding through FuseNet from the Euratom research and training programme under Grant Agreement No. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

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Smith, N., Nagasaki, K., Proll, J. H. E., Okada, H., Minami, T., Kado, S. I., Kobayashi, S., Ohshima, S., Konoshima, S., Mizuuchi, T., Nakamura, Y., Ishizawa, A., Tomita, T., Fukuda, T., & Kondo, Y. (2020). Measurement of radial correlation lengths of electron density fluctuations in heliotron J using O-mode reflectometry. Plasma and Fusion Research, 15, Artikel 2054. https://doi.org/10.1585/PFR.15.1202054

@article{a6290bb2c2734623a6983c5ec1e623c7,

title = "Measurement of radial correlation lengths of electron density fluctuations in heliotron J using O-mode reflectometry",

abstract = "The radial correlation length Lr of electron density fluctuations has been measured using a two-channel Omode reflectometer system in the helical-axis fusion plasma experimental device Heliotron J. The experimental results show that Lr is around 1.4 n 0.7mm in three different magnetic field bumpiness configurations (i.e. low, medium and high) for the low-density electron cyclotron heating (ECH) discharges. In high-density neutral beam injection (NBI) discharges with HIGP and pellet injection, Lr is found to be around 1 n 0.2 mm.",

keywords = "Electron density fluctuation, Heliotron J, O-mode reflectometry, Radial correlation length, Turbulent transport",

author = "Niels Smith and Kazunobu Nagasaki and Proll, \{Josefine H.E.\} and Hiroyuki Okada and Takashi Minami and Kado, \{Shin Ichiro\} and Shinji Kobayashi and Shinsuke Ohshima and Shigeru Konoshima and Tohru Mizuuchi and Yuji Nakamura and Akihiro Ishizawa and Tsuyoshi Tomita and Takeshi Fukuda and Yasuto Kondo",

year = "2020",

month = aug,

day = "6",

doi = "10.1585/PFR.15.1202054",

language = "English",

volume = "15",

journal = "Plasma and Fusion Research",

issn = "1880-6821",

publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",

}

Smith, N, Nagasaki, K, Proll, JHE, Okada, H, Minami, T, Kado, SI, Kobayashi, S, Ohshima, S, Konoshima, S, Mizuuchi, T, Nakamura, Y, Ishizawa, A, Tomita, T, Fukuda, T & Kondo, Y 2020, 'Measurement of radial correlation lengths of electron density fluctuations in heliotron J using O-mode reflectometry', Plasma and Fusion Research, vol. 15, 2054. https://doi.org/10.1585/PFR.15.1202054

TY - JOUR

T1 - Measurement of radial correlation lengths of electron density fluctuations in heliotron J using O-mode reflectometry

AU - Smith, Niels

AU - Nagasaki, Kazunobu

AU - Proll, Josefine H.E.

AU - Okada, Hiroyuki

AU - Minami, Takashi

AU - Kado, Shin Ichiro

AU - Kobayashi, Shinji

AU - Ohshima, Shinsuke

AU - Konoshima, Shigeru

AU - Mizuuchi, Tohru

AU - Nakamura, Yuji

AU - Ishizawa, Akihiro

AU - Tomita, Tsuyoshi

AU - Fukuda, Takeshi

AU - Kondo, Yasuto

PY - 2020/8/6

Y1 - 2020/8/6

N2 - The radial correlation length Lr of electron density fluctuations has been measured using a two-channel Omode reflectometer system in the helical-axis fusion plasma experimental device Heliotron J. The experimental results show that Lr is around 1.4 n 0.7mm in three different magnetic field bumpiness configurations (i.e. low, medium and high) for the low-density electron cyclotron heating (ECH) discharges. In high-density neutral beam injection (NBI) discharges with HIGP and pellet injection, Lr is found to be around 1 n 0.2 mm.

AB - The radial correlation length Lr of electron density fluctuations has been measured using a two-channel Omode reflectometer system in the helical-axis fusion plasma experimental device Heliotron J. The experimental results show that Lr is around 1.4 n 0.7mm in three different magnetic field bumpiness configurations (i.e. low, medium and high) for the low-density electron cyclotron heating (ECH) discharges. In high-density neutral beam injection (NBI) discharges with HIGP and pellet injection, Lr is found to be around 1 n 0.2 mm.

KW - Electron density fluctuation

KW - Heliotron J

KW - O-mode reflectometry

KW - Radial correlation length

KW - Turbulent transport

UR - https://www.scopus.com/pages/publications/85090268883

U2 - 10.1585/PFR.15.1202054

DO - 10.1585/PFR.15.1202054

M3 - Article

AN - SCOPUS:85090268883

SN - 1880-6821

VL - 15

JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

M1 - 2054

ER -

Measurement of radial correlation lengths of electron density fluctuations in heliotron J using O-mode reflectometry

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