1–6 Jul 2025
Omni Boston Hotel at the Seaport
US/Eastern timezone

Fri-Af-Po.03-02: Development of a reusable case for SPARC toroidal field magnet testing

4 Jul 2025, 14:00
2h
Ensemble Ballroom, Level 2

Ensemble Ballroom, Level 2

Speakers

Mr Ben Walsh (Commonwealth Fusion Systems) David Hegermiller (Commonwealth Fusion Systems)

Description

Commonwealth Fusion Systems (CFS) is developing and building a commercially relevant fusion energy machine that will produce more energy than is put into it. In this research, a reusable structural case for testing toroidal field (TF) magnets in the Coil Test Stand Cryostat prior to integration in the SPARC Tokamak has been developed and is currently employed in this critical evaluation of TF magnets. This technology enables CFS to learn about the performance of the magnets under SPARC representative condition and make any necessary changes to the TF magnets post-test.

In this poster, we will discuss the requirements for this case and how it can handle the extreme loads applied by the magnet. Furthermore how it can perform at ambient and 20K test conditions, maintain a helium-tight pressure vessel and overall maintain its reusability. The material testing, structural analysis and calibration of the model based on strain measurements during TF testing will also be discussed. The 6 month design-build process for this case will further be discussed as an example of how to execute on tough technical challenges in the fusion industry.

Authors

Mr Ben Walsh (Commonwealth Fusion Systems) David Hegermiller (Commonwealth Fusion Systems)

Co-authors

Mr Ben Weinreb (Commonwealth Fusion Systems) Mr Chris LeBrun (Commonwealth Fusion Systems) Mr Connor Jackson (Commonwealth Fusion Systems) Mr Drew Hires (Commonwealth Fusion Systems) Mr Justin Nealey (Commonwealth Fusion Systems) Mr Nakul Bende (Commonwealth Fusion Systems) Mr Noah Hudelson (Commonwealth Fusion Systems) Mrs Shiyun Ruan (Commonwealth Fusion Systems) Ms Sunaya Reddy (Commonwealth Fusion Systems) Mr Vinny Fry (Commonwealth Fusion Systems)

Presentation materials

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