Collective Thomson scattering data analysis for Wendelstein 7-X

I. Abramovic; A. Pavone; J. Svensson; D. Moseev; Mirko Salewski; H.P. Laqua; N.J. Lopes Cardozo; R.C. Wolf

doi:10.1088/1748-0221/12/08/C08015

Collective Thomson scattering data analysis for Wendelstein 7-X

I. Abramovic, A. Pavone, J. Svensson, D. Moseev, Mirko Salewski, H.P. Laqua, N.J. Lopes Cardozo, R.C. Wolf

Department of Physics

Research output: Contribution to journal › Conference article › Research › peer-review

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Abstract

Collective Thomson scattering (CTS) diagnostic is being installed on the Wendelstein 7-X stellarator to measure the bulk ion temperature in the upcoming experimental campaign. In order to prepare for the data analysis, a forward model of the diagnostic (eCTS) has been developed and integrated into the Bayesian data analysis framework Minerva. Synthetic spectra have been calculated with the forward model and inverted using Minerva in order to demonstrate the feasibility to measure the ion temperature in the presence of nuisance parameters that also influence CTS spectra. In this paper we report on the results of this anlysis and discuss the main sources of uncertainty in the CTS data analysis.

Original language	English
Article number	C08015
Journal	Journal of Instrumentation
Volume	12
Issue number	08
Number of pages	7
ISSN	1748-0221
DOIs	https://doi.org/10.1088/1748-0221/12/08/C08015
Publication status	Published - 2017
Event	2nd European Conference on Plasma Diagnostics - Bordeaux, France Duration: 18 Apr 2017 → 21 Apr 2017 Conference number: 2

Conference

Conference	2nd European Conference on Plasma Diagnostics
Number	2
Country	France
City	Bordeaux
Period	18/04/2017 → 21/04/2017

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10.1088/1748-0221/12/08/C08015

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Cite this

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title = "Collective Thomson scattering data analysis for Wendelstein 7-X",

abstract = "Collective Thomson scattering (CTS) diagnostic is being installed on the Wendelstein 7-X stellarator to measure the bulk ion temperature in the upcoming experimental campaign. In order to prepare for the data analysis, a forward model of the diagnostic (eCTS) has been developed and integrated into the Bayesian data analysis framework Minerva. Synthetic spectra have been calculated with the forward model and inverted using Minerva in order to demonstrate the feasibility to measure the ion temperature in the presence of nuisance parameters that also influence CTS spectra. In this paper we report on the results of this anlysis and discuss the main sources of uncertainty in the CTS data analysis.",

author = "I. Abramovic and A. Pavone and J. Svensson and D. Moseev and Mirko Salewski and H.P. Laqua and Cardozo, {N.J. Lopes} and R.C. Wolf",

year = "2017",

doi = "10.1088/1748-0221/12/08/C08015",

language = "English",

volume = "12",

journal = "Journal of Instrumentation",

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publisher = "IOP Publishing",

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note = "2nd European Conference on Plasma Diagnostics ; Conference date: 18-04-2017 Through 21-04-2017",

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T1 - Collective Thomson scattering data analysis for Wendelstein 7-X

AU - Abramovic, I.

AU - Pavone, A.

AU - Svensson, J.

AU - Moseev, D.

AU - Salewski, Mirko

AU - Laqua, H.P.

AU - Cardozo, N.J. Lopes

AU - Wolf, R.C.

N1 - Conference code: 2

PY - 2017

Y1 - 2017

N2 - Collective Thomson scattering (CTS) diagnostic is being installed on the Wendelstein 7-X stellarator to measure the bulk ion temperature in the upcoming experimental campaign. In order to prepare for the data analysis, a forward model of the diagnostic (eCTS) has been developed and integrated into the Bayesian data analysis framework Minerva. Synthetic spectra have been calculated with the forward model and inverted using Minerva in order to demonstrate the feasibility to measure the ion temperature in the presence of nuisance parameters that also influence CTS spectra. In this paper we report on the results of this anlysis and discuss the main sources of uncertainty in the CTS data analysis.

AB - Collective Thomson scattering (CTS) diagnostic is being installed on the Wendelstein 7-X stellarator to measure the bulk ion temperature in the upcoming experimental campaign. In order to prepare for the data analysis, a forward model of the diagnostic (eCTS) has been developed and integrated into the Bayesian data analysis framework Minerva. Synthetic spectra have been calculated with the forward model and inverted using Minerva in order to demonstrate the feasibility to measure the ion temperature in the presence of nuisance parameters that also influence CTS spectra. In this paper we report on the results of this anlysis and discuss the main sources of uncertainty in the CTS data analysis.

U2 - 10.1088/1748-0221/12/08/C08015

DO - 10.1088/1748-0221/12/08/C08015

M3 - Conference article

VL - 12

JO - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

IS - 08

M1 - C08015

T2 - 2nd European Conference on Plasma Diagnostics

Y2 - 18 April 2017 through 21 April 2017

ER -