Fast production of microwave component prototypes by additive manufacturing and copper coating

Korsholm, S. B.; Leipold, F.; Madsen, R. B.; Gutierrez, H.E.; Jensen, Thomas; Jessen, M.; Larsen, A.W.; Rasmussen, Jesper; Salewski, M.

doi:10.1063/5.0043816

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…The development of the CTS diagnostic has been accompanied by a number of prototype tests of individual components, subsets of the system, or more functional tests 49 . It has not been within the scope to make a full scale mock-up of the complete CTS front-end, but the tests that have been performed have consolidated the design.…”

Section: Prototype Testingmentioning

confidence: 99%

ITER collective Thomson scattering—Preparing to diagnose fusion-born alpha particles (invited)

Korsholm

Chambon

Gonçalves³

et al. 2022

Review of Scientific Instruments

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The ITER Collective Thomson scattering (CTS) diagnostic will measure the dynamics of fusion-born alpha particles in the burning ITER plasma by scattering a 1 MW 60 GHz gyrotron beam off fast-ion induced fluctuations in the plasma. The diagnostic will have seven measurement volumes across the ITER cross section and will resolve the alpha particle energies in the range from 300 keV to 3.5 MeV; importantly, the CTS diagnostic is the only diagnostic capable of measuring confined alpha particles for energies below ∼1.7 MeV and will also be sensitive to the other fast-ion populations. The temporal resolution is 100 ms, allowing the capture of dynamics on that timescale, and the typical spatial resolution is 10–50 cm. The development and design of the in-vessel and primary parts of the CTS diagnostic has been completed. This marks the beginning of a new phase of preparation to maximize the scientific benefit of the diagnostic, e.g., by investigating the capability to contribute to the determination of the fuel-ion ratio and the bulk ion temperature as well as integrating data analysis with other fast-ion and bulk-ion diagnostics.

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Section: Prototype Testingmentioning

confidence: 99%

ITER collective Thomson scattering—Preparing to diagnose fusion-born alpha particles (invited)

Korsholm

Chambon

Gonçalves³

et al. 2022

Review of Scientific Instruments

Self Cite

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3D metal powder additive manufacturing phased array antenna for multichannel Doppler reflectometer

Tokuzawa

Nasu

Inagaki

et al. 2022

Review of Scientific Instruments

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Measuring the time variation of the wavenumber spectrum of turbulence is important for understanding the characteristics of high-temperature plasmas, and the application of a Doppler reflectometer with simultaneous multi-frequency sources is expected. To implement this diagnostic in future fusion devices, the use of a phased array antenna (PAA) that can scan microwave beams without moving antennas is recommended. Since the frequency-scanning waveguide leaky-wave antenna-type PAA has a complex structure, we have investigated its characteristics by modeling it with 3D metal powder additive manufacturing (AM). First, a single waveguide is fabricated to understand the characteristics of 3D AM techniques, and it is clear that there are differences in performance depending on the direction of manufacture and surface treatment. Then, a PAA is made, and it is confirmed that the beam can be emitted in any direction by frequency scanning. The plasma flow velocity can be measured by applying the 3D manufacturing PAA to plasma measurement.

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Fast production of microwave component prototypes by additive manufacturing and copper coating

Cited by 2 publications

References 12 publications

ITER collective Thomson scattering—Preparing to diagnose fusion-born alpha particles (invited)

ITER collective Thomson scattering—Preparing to diagnose fusion-born alpha particles (invited)

3D metal powder additive manufacturing phased array antenna for multichannel Doppler reflectometer

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