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%.
authors.affiliation: Millimeter and Microwave Research Center, University of California at Davis, Davis, California 95616, USA.
authors.forename: X
authors.initials: X
authors.lastname: Ren
authors.affiliation: Millimeter and Microwave Research Center, University of California at Davis, Davis, California 95616, USA.
authors.forename: C W
authors.initials: CW
authors.lastname: Domier
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.
authors.forename: G
authors.initials: G
authors.lastname: Kramer
authors.affiliation: Millimeter and Microwave Research Center, University of California at Davis, Davis, California 95616, USA.
authors.forename: N C
authors.initials: NC
authors.lastname: Luhmann
authors.affiliation: Millimeter and Microwave Research Center, University of California at Davis, Davis, California 95616, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Muscatello
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.
authors.forename: L
authors.initials: L
authors.lastname: Shi
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.
authors.forename: B J
authors.initials: BJ
authors.lastname: Tobias
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.
authors.forename: E
authors.initials: E
authors.lastname: Valeo