Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X

D. Moseev; S. Ponomarenko; H.P. Laqua; T. Stange; S.K. Nielsen; H. Braune; G. Gantenbein; S. Illy; J. Jelonnek; W. Kasparek; A. Kuleshov; L. Krier; C. Lechte; S. Marsen; M. Nishiura; B. Plaum; R. Ragona; T. Ruess; M. Salewski; P. Stordiau; M. Thumm; R.C. Wolf; J. Zimmermann

doi:10.1088/1748-0221/19/03/C03056

Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X

D. Moseev^*, S. Ponomarenko, H.P. Laqua, T. Stange, S.K. Nielsen, H. Braune, G. Gantenbein, S. Illy, J. Jelonnek, W. Kasparek, A. Kuleshov, L. Krier, C. Lechte, S. Marsen, M. Nishiura, B. Plaum, R. Ragona, T. Ruess, M. Salewski, P. StordiauM. Thumm, R.C. Wolf, J. Zimmermann

^*Corresponding author for this work

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Abstract

Collective Thomson Scattering (CTS) diagnostics measure the scattering spectrum of monochromatic incident radiation off collective fluctuations in the plasma. In this contribution, we present the first results from the upgraded CTS diagnostic at Wendelstein 7-X (W7-X) operating in the frequency range between 172 and 176 GHz. This frequency range allows for minimization of noise originating from the electron cyclotron emission in the plasma. Consequently, the good signal-to-noise ratio allows measurements of fast ions or bulk plasma parameters with higher temporal resolution compared with the previously used 140 GHz system.

Original language	English
Article number	C03056
Journal	Journal of Instrumentation
Volume	19
Issue number	03
Number of pages	9
ISSN	1748-0221
DOIs	https://doi.org/10.1088/1748-0221/19/03/C03056
Publication status	Published - 2024
Event	20^thInternational Symposium on Laser-Aided Plasma Diagnostics - Kyoto, Japan Duration: 10 Sept 2023 → 14 Sept 2023 Conference number: 20

Conference

Conference	20^thInternational Symposium on Laser-Aided Plasma Diagnostics
Number	20
Country/Territory	Japan
City	Kyoto
Period	10/09/2023 → 14/09/2023

Keywords

Microwave radiometers
Microwave Antennas

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Moseev, D., Ponomarenko, S., Laqua, H. P., Stange, T., Nielsen, S. K., Braune, H., Gantenbein, G., Illy, S., Jelonnek, J., Kasparek, W., Kuleshov, A., Krier, L., Lechte, C., Marsen, S., Nishiura, M., Plaum, B., Ragona, R., Ruess, T., Salewski, M., ... Zimmermann, J. (2024). Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X. Journal of Instrumentation, 19(03), Article C03056. https://doi.org/10.1088/1748-0221/19/03/C03056

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title = "Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X",

abstract = "Collective Thomson Scattering (CTS) diagnostics measure the scattering spectrum of monochromatic incident radiation off collective fluctuations in the plasma. In this contribution, we present the first results from the upgraded CTS diagnostic at Wendelstein 7-X (W7-X) operating in the frequency range between 172 and 176 GHz. This frequency range allows for minimization of noise originating from the electron cyclotron emission in the plasma. Consequently, the good signal-to-noise ratio allows measurements of fast ions or bulk plasma parameters with higher temporal resolution compared with the previously used 140 GHz system.",

keywords = "Microwave radiometers, Microwave Antennas",

author = "D. Moseev and S. Ponomarenko and H.P. Laqua and T. Stange and S.K. Nielsen and H. Braune and G. Gantenbein and S. Illy and J. Jelonnek and W. Kasparek and A. Kuleshov and L. Krier and C. Lechte and S. Marsen and M. Nishiura and B. Plaum and R. Ragona and T. Ruess and M. Salewski and P. Stordiau and M. Thumm and R.C. Wolf and J. Zimmermann",

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language = "English",

volume = "19",

journal = "Journal of Instrumentation",

issn = "1748-0221",

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Moseev, D, Ponomarenko, S, Laqua, HP, Stange, T, Nielsen, SK, Braune, H, Gantenbein, G, Illy, S, Jelonnek, J, Kasparek, W, Kuleshov, A, Krier, L, Lechte, C, Marsen, S, Nishiura, M, Plaum, B, Ragona, R, Ruess, T, Salewski, M, Stordiau, P, Thumm, M, Wolf, RC & Zimmermann, J 2024, 'Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X', Journal of Instrumentation, vol. 19, no. 03, C03056. https://doi.org/10.1088/1748-0221/19/03/C03056

TY - GEN

T1 - Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X

AU - Moseev, D.

AU - Ponomarenko, S.

AU - Laqua, H.P.

AU - Stange, T.

AU - Nielsen, S.K.

AU - Braune, H.

AU - Gantenbein, G.

AU - Illy, S.

AU - Jelonnek, J.

AU - Kasparek, W.

AU - Kuleshov, A.

AU - Krier, L.

AU - Lechte, C.

AU - Marsen, S.

AU - Nishiura, M.

AU - Plaum, B.

AU - Ragona, R.

AU - Ruess, T.

AU - Salewski, M.

AU - Stordiau, P.

AU - Thumm, M.

AU - Wolf, R.C.

AU - Zimmermann, J.

N1 - Conference code: 20

PY - 2024

Y1 - 2024

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AB - Collective Thomson Scattering (CTS) diagnostics measure the scattering spectrum of monochromatic incident radiation off collective fluctuations in the plasma. In this contribution, we present the first results from the upgraded CTS diagnostic at Wendelstein 7-X (W7-X) operating in the frequency range between 172 and 176 GHz. This frequency range allows for minimization of noise originating from the electron cyclotron emission in the plasma. Consequently, the good signal-to-noise ratio allows measurements of fast ions or bulk plasma parameters with higher temporal resolution compared with the previously used 140 GHz system.

KW - Microwave radiometers

KW - Microwave Antennas

U2 - 10.1088/1748-0221/19/03/C03056

DO - 10.1088/1748-0221/19/03/C03056

M3 - Conference article

SN - 1748-0221

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JO - Journal of Instrumentation

JF - Journal of Instrumentation

IS - 03

M1 - C03056

T2 - 20<sup>th </sup>International Symposium on Laser-Aided Plasma Diagnostics

Y2 - 10 September 2023 through 14 September 2023

ER -

Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X

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