Any strengthening or increased output solution at one end of a power system that is positive or efficacious will typically force other engineering challenges to ripple throughout the system. Excellent solutions at one end that have plagued development to any point will usually require seemingly insuperable problems across the board that often, even if solved, make the system too expensive or unable to warrant such costs on a planned mission goal
Richard Hull
Commonwealth Fusion's High Temp Superconducting Magnet Success
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Richard Hull
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- Real name: Richard Hull
Re: Commonwealth Fusion's High Temp Superconducting Magnet Success
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
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Rich Feldman
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- Joined: Mon Dec 21, 2009 6:59 pm
- Real name: Rich Feldman
- Location: Santa Clara County, CA, USA
Re: Commonwealth Fusion's High Temp Superconducting Magnet Success
Justin mentioned:
>>The forces between large superconducting magnets at 20T will be rather interesting as well....
Yup. Each D shaped coil really wants to expand and form a circle,
and really wants to get cozy with neighboring D's.
Fortunately the attraction of left and right neighbors almost cancel each other, as long as all coils carry the same current.
Not counting tidal forces, which compete with the magnetic compressive (pinch) force within each coil bundle.
Suppose we energize just two neighboring SPARC coils with nominal 6.27 MA each.
The straight vertical sections near the tokamak axis are 0.314159 meters apart (1/18 of circumference of 1.8 m circle).
Each generates 4.0 T radial field at the neighboring vertical coil section.
The attraction per lineal meter is 25 MN (5.6 million lbf), 83% of Space Shuttle nominal total thrust.
>>The forces between large superconducting magnets at 20T will be rather interesting as well....
Yup. Each D shaped coil really wants to expand and form a circle,
and really wants to get cozy with neighboring D's.
Fortunately the attraction of left and right neighbors almost cancel each other, as long as all coils carry the same current.
Not counting tidal forces, which compete with the magnetic compressive (pinch) force within each coil bundle.
Suppose we energize just two neighboring SPARC coils with nominal 6.27 MA each.
The straight vertical sections near the tokamak axis are 0.314159 meters apart (1/18 of circumference of 1.8 m circle).
Each generates 4.0 T radial field at the neighboring vertical coil section.
The attraction per lineal meter is 25 MN (5.6 million lbf), 83% of Space Shuttle nominal total thrust.
All models are wrong; some models are useful. -- George Box