首页|Automated design of an additive manufactured compact broadband antenna for plasma reflectometry

Automated design of an additive manufactured compact broadband antenna for plasma reflectometry

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  • NETL
  • NSTL
  • Elsevier
Broadband antennas operating in the gigahertz frequency range are regularly used for plasma reflectometry diagnostics. Due to a lack of space and unique diagnostic constraints, these antennas are often custom in design and frequency range. Recent advances in additive manufacturing of high temperature copper alloys allow for expanded freedom in design of these diagnostic antennas. In this work, a heuristic simulated annealing algorithm is used alongside 3-D finite element simulation to automate the design of a double ridged rectangular horn antenna fora reflectometry diagnostic on the DIII-D tokamak. Optimization of antenna performance given the design constraints results in a compact broadband (6-20+ GHz) antenna design. Measured transmission from the additively manufactured antenna matches simulation within reasonable error, and experimental plasma electron density profiles from the DIII-D high-field side scrape-off layer are shown.

Scrape-off layer reflectometryAdditive manufacturingAntenna optimizationSimulated annealingDENSITY PROFILEOPTIMIZATIONGRAPHITE

Leppink, E.、Lau, C.、Lin, Y.、Seltzman, A.、Wukitch, S. J.

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Massachusetts Institute of Technology Plasma Science and Fusion Center

Oak Ridge Natl Lab

2025

10.1016/j.fusengdes.2025.114810

Fusion engineering and design

Fusion engineering and design

SCI
ISSN：0920-3796
年,卷(期)：2025.211(Feb.)
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