Process to generate a synthetic diagnostic for microwave imaging reflectometry with the full-wave code FWR2D

X. Ren; C. W. Domier; G. Kramer; N. C. Luhmann; C. M. Muscatello; L. Shi; B. J. Tobias; E. Valeo

doi:10.1063/1.4895100

Process to generate a synthetic diagnostic for microwave imaging reflectometry with the full-wave code FWR2D

X. Ren, C. W. Domier, G. Kramer, N. C. Luhmann, C. M. Muscatello, L. Shi, B. J. Tobias, E. Valeo

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Abstract

A synthetic microwave imaging reflectometer (MIR) diagnostic employing the full-wave reflectometer code (FWR2D) has been developed and is currently being used to guide the design of real systems, such as the one recently installed on DIII-D. The FWR2D code utilizes real plasma profiles as input, and it is combined with optical simulation tools for synthetic diagnostic signal generation. A detailed discussion of FWR2D and the process to generate the synthetic signal are presented in this paper. The synthetic signal is also compared to a prescribed density fluctuation spectrum to quantify the imaging quality. An example is presented with H-mode-like plasma profiles derived from a DIII-D discharge, where the MIR focal is located in the pedestal region. It is shown that MIR is suitable for diagnosing fluctuations with poloidal wavenumber up to 2.0 cm^-1 and fluctuation amplitudes less than 5%.

Original language	English (US)
Article number	11D863
Journal	Review of Scientific Instruments
Volume	85
Issue number	11
DOIs	https://doi.org/10.1063/1.4895100
State	Published - Nov 1 2014

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.4895100

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@article{276136a8ad5647af9a2638684f42bfdf,

title = "Process to generate a synthetic diagnostic for microwave imaging reflectometry with the full-wave code FWR2D",

abstract = "A synthetic microwave imaging reflectometer (MIR) diagnostic employing the full-wave reflectometer code (FWR2D) has been developed and is currently being used to guide the design of real systems, such as the one recently installed on DIII-D. The FWR2D code utilizes real plasma profiles as input, and it is combined with optical simulation tools for synthetic diagnostic signal generation. A detailed discussion of FWR2D and the process to generate the synthetic signal are presented in this paper. The synthetic signal is also compared to a prescribed density fluctuation spectrum to quantify the imaging quality. An example is presented with H-mode-like plasma profiles derived from a DIII-D discharge, where the MIR focal is located in the pedestal region. It is shown that MIR is suitable for diagnosing fluctuations with poloidal wavenumber up to 2.0 cm-1 and fluctuation amplitudes less than 5\%.",

author = "X. Ren and Domier, \{C. W.\} and G. Kramer and Luhmann, \{N. C.\} and Muscatello, \{C. M.\} and L. Shi and Tobias, \{B. J.\} and E. Valeo",

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doi = "10.1063/1.4895100",

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T1 - Process to generate a synthetic diagnostic for microwave imaging reflectometry with the full-wave code FWR2D

AU - Ren, X.

AU - Domier, C. W.

AU - Kramer, G.

AU - Luhmann, N. C.

AU - Muscatello, C. M.

AU - Shi, L.

AU - Tobias, B. J.

AU - Valeo, E.

PY - 2014/11/1

Y1 - 2014/11/1

N2 - A synthetic microwave imaging reflectometer (MIR) diagnostic employing the full-wave reflectometer code (FWR2D) has been developed and is currently being used to guide the design of real systems, such as the one recently installed on DIII-D. The FWR2D code utilizes real plasma profiles as input, and it is combined with optical simulation tools for synthetic diagnostic signal generation. A detailed discussion of FWR2D and the process to generate the synthetic signal are presented in this paper. The synthetic signal is also compared to a prescribed density fluctuation spectrum to quantify the imaging quality. An example is presented with H-mode-like plasma profiles derived from a DIII-D discharge, where the MIR focal is located in the pedestal region. It is shown that MIR is suitable for diagnosing fluctuations with poloidal wavenumber up to 2.0 cm-1 and fluctuation amplitudes less than 5%.

AB - A synthetic microwave imaging reflectometer (MIR) diagnostic employing the full-wave reflectometer code (FWR2D) has been developed and is currently being used to guide the design of real systems, such as the one recently installed on DIII-D. The FWR2D code utilizes real plasma profiles as input, and it is combined with optical simulation tools for synthetic diagnostic signal generation. A detailed discussion of FWR2D and the process to generate the synthetic signal are presented in this paper. The synthetic signal is also compared to a prescribed density fluctuation spectrum to quantify the imaging quality. An example is presented with H-mode-like plasma profiles derived from a DIII-D discharge, where the MIR focal is located in the pedestal region. It is shown that MIR is suitable for diagnosing fluctuations with poloidal wavenumber up to 2.0 cm-1 and fluctuation amplitudes less than 5%.

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Process to generate a synthetic diagnostic for microwave imaging reflectometry with the full-wave code FWR2D

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