2D full wave modeling for a synthetic Doppler backscattering diagnostic

被引：16

作者：

Hillesheim, J. C. ^{[1
]}

Holland, C. ^{[2
]}

Schmitz, L. ^{[1
]}

Kubota, S. ^{[1
]}

Rhodes, T. L. ^{[1
]}

Carter, T. A. ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Univ Calif San Diego, La Jolla, CA 92093 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2012年 / 83卷 / 10期

关键词：

MICROWAVE REFLECTOMETRY; SIMULATIONS; TURBULENCE;

D O I：

10.1063/1.4733549

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Doppler backscattering (DBS) is a plasma diagnostic used in tokamaks and other magnetic confinement devices to measure the fluctuation level of intermediate wavenumber (k(theta)rho(s) similar to 1) density fluctuations and the lab frame propagation velocity of turbulence. Here, a synthetic DBS diagnostic is described, which has been used for comparisons between measurements in the DIII-D tokamak and predictions from nonlinear gyrokinetic simulations. To estimate the wavenumber range to which a Gaussian beam would be sensitive, a ray tracing code and a 2D finite difference, time domain full wave code are used. Experimental density profiles and magnetic geometry are used along with the experimental antenna and beam characteristics. An example of the effect of the synthetic diagnostic on the output of a nonlinear gyrokinetic simulation is presented. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4733549]

引用

页数：3

共 29 条

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