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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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DOE OSTI2025

SBIR Phase I Final Technical Report LOW-COST, LIGHTWEIGHT DOPED POLYMER COATINGS FOR MICROELECTRONICS VIA 3D PRINTING Award Number DE-SC0025167 Prepared for U.S. Department of Energy, Office of Science, SC-1 For the Period July 22, 2024 – April 21, 2025 Report Date May 5, 2025 Submitted by Jun Wang, Ph.D., Principal Investigator Report Contributors Dr. Jun Wang, Dr. Charles Sosa

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Wang, Jun [Radiation Monitoring Devices, Inc., Wat↗
DOE OSTI2025

Progress and challenges in traveling-wave (TW) SRF cavity

Traveling-wave (TW) technology can push the accelerator field gradient of niobium SRF cavity to 70MV/m or higher beyond the limit of 50~60MV/m in Standing-wave (SW) technology. The early stages of TW SRF cavity developments had been funded by several SBIR grants to Euclid Techlabs and completed in collaboration with Fermilab through a 1-cell prototype and a proof-of-principle 3-cell TW cavity. The TW resonance excitation in the 3-cell TW cavity at 2K was demonstrated through the low power RF test in early 2024. A high-power test of the 3-cell in TW mode being prepared. To advance a design and technology to fabricate a novel high gradient TW SRF cavity, FNAL proposed a half-meter TW RF design and R&Ds to realize that are in progress. Here we will report the recent progress in the 3-cell TW cavity and the challenges towards a half-meter scale TW cavity.

43 PARTICLE ACCELERATORS↗
DOE OSTI2024

External Fast Electrically-Controlled Ferroelectric Tuners for SRF Cavities

Euclid Techlabs LLC, in collaboration with JLAB (R. Rimmer, C. Hovater) has been awarded the Phase I 2021 DOE SBIR DE-SC0021510 project to develop the first Fast Ferroelectric reactive tuner (FRT) for a SRF accelerator that is currently in operation – CEBAF at JLAB, and is studying the possibility of developing a tuner designs for various new applications: fast frequency switching, transient detuning, and microphonics compensation for the SRF accelerators.

43 PARTICLE ACCELERATORS↗
DOE OSTI2024

Progress and Challenges in Traveling-Wave SRF cavity development at Fermilab

Traveling-wave (TW) technology can push the accelerator field gradient of niobium SRF cavity to 70MV/m or higher beyond the limit of 50~60MV/m in Standing-wave (SW) technology. The early stages of TW SRF cavity developments had been funded by several SBIR grants to Euclid Techlabs and completed in collaboration with Fermilab through a 1-cell prototype and a proof-of-principle 3-cell TW cavity. The TW resonance excitation in the 3-cell TW cavity at 2K was demonstrated through the low power RF test in early 2024. A high-power test of the 3-cell in TW mode being prepared. To advance a design and technology to fabricate a novel high gradient TW SRF cavity, FNAL proposed a half-meter TW RF design and R&Ds to realize that are in progress. Here we will report the recent progress in the 3-cell TW cavity and the challenges towards a half-meter scale TW cavity.

Furuta, F.↗