/r/fusion

Photograph via snooOG

Discussion and news on advancements in the field of nuclear fusion energy and related technologies.

Nuclear Fusion on Reddit

Focused on advancements in the field of nuclear fusion.

Submissions should be related to nuclear fusion or plasma physics as currently understood by the scientific community.


Nuclear fusion is a nuclear reaction in which two or more atomic nuclei collide together at a very high speed and form a new nucleus. For light elements like hydrogen or helium the fused nucleus weights less than the sum of the original nucleus. The missing mass is released as energy in accordance with Einstein's mass-energy equivalence equations. Fusion is the process that powers active or "main sequence" stars.

Primer on fusion power

Current mainstream approaches include:


Related:

/r/fusion

25,185 Subscribers

35

Helion- Direct Energy Recovery

20 Comments
2024/12/06
23:03 UTC

2

Energy Singularity: Development and construction of magnet system for world’s first full high temperature superconducting tokamak

https://pdf.sciencedirectassets.com/780903/1-s2.0-S2772830724X00046/1-s2.0-S2772830724000541/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGYaCXVzLWVhc3QtMSJHMEUCIE9joaquVje2Z4IrR%2Bg6bg0QugTYjLtYGFAXzV9gk4n%2FAiEAtQIdU%2FlW1VM0KGKekcP4CS36cd%2FI%2BszjZGEuusEEO%2FEqsgUIHhAFGgwwNTkwMDM1NDY4NjUiDM0SCHXjlUz2FcwE%2FiqPBesuEpkd05NDx81NV8xggnd7BLEgr41fr5REHqQZFG16ndLBwgBvld%2BA32LCBMgQZHwvSc6zW6e65EfrSdET1OIJlF0iXEvTgJtpFIyabw2exaMDns42dBd2RsI7n4HPrUgg4UBKoOVcSQEXXU6GrijdYbX52tEdBQFexZVjjN2oyy31QEeGRQCuDkn2ZyXKk7%2Bp94f%2BYftULuzBmsNt0YYSYebpifaEKTBM0YjzNmhsYAQy2HFTjYQGDpgXwGVf1K7vgpwSk7GUEsqhkzNOpkX2dIx6eQphtR7wy44YkVZ2HvI8gIZjAMvUxo%2BcusRB8aTQQpyeUSMYk1YgMR5v6%2B%2FgHvh4820aVZBu2zheBE2KhcP%2BaQsaub7V98lcY1L4%2F2aj%2BSg7HEawyFLzYmznE8xXOM7W2OPtvO11XWzzGCxoeDtThhMNKvtd%2F3Vwmb0u8UXF2%2FhKdh8ax%2Fy7xLXDtdPEFc1MIpbsfzzXf112TckB3i4aY7Dly%2BjIb7IDGn05J1D4XFcVKuTmUS4seoHGPWvRraJdCTzHhPdyRwDUVMEf0mFTmSY9CUcY0DSjfLXtoma3I4KV%2B4fMa7qw6A3sCol%2FQBH2R8Shez6KDRGN%2Fi%2BV6ncDD45i9E0aTm%2FcYJkMyXLav9AYOdgWLDmOj7L3BwoW5ruebgoAVOKIAxiJKGaFNhNo2gquXYfXQVII%2B3dsC7TbH7%2F4WywDq6o8k5ImegfrGBTNEOd4hHVfw9LA8GRnteUOi2TcfsShBFMOnC7MTIYWh9NfNOfuge8tv9zvM%2F%2BiXhhZAZDKpHlkKknfXREIMB64bc4lIh30VwXDyfF%2FYmQrtH4g%2B1SVW5pCISm9MaRnJfuyto8WYFsc4phcUBYw2rHIugY6sQEQqB3SHmbiC7QauP9md28cXVIPa262CgvWK2dARDFmPmttJ5jgZtAO0ad0%2BWGobqV35I8bN5mdMIkiIUfwfYw8RcTlKUsIGxL0ZqoIsxnFC6UznQBrJBu8Z7wa5ou2F6v%2BCKhurQmTNf0Ox2r2ldB9L0mUXAYg2bD9AwVOwyIislvS1OjfEARrDxULDkHtSv6j6QgD2w1vJIlepIUKpJfvc8rs9v2eWpy3b%2FyyFJ%2FwcRc%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20241205T223813Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Credential=ASIAQ3PHCVTYYH7UODDM%2F20241205%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=ad708d097809c16265d60ef146316f815f9d4f3ec6e7cd013397ff6861130333&hash=fa3660452b6004d36f7c83ac18e594c0caa73a0a78963a1100e5ec0e450c2910&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&pii=S2772830724000541&tid=spdf-c7f7db12-3c68-42c2-bef4-d32ac509ee13&sid=14cd29ee90de77467108b565af45ac2edebbgxrqa&type=client&tsoh=d3d3LnNjaWVuY2VkaXJlY3QuY29t&ua=0c105e01025557535450&rr=8ed786734d9e8d18&cc=jp

7 Comments
2024/12/05
22:38 UTC

13

Helion received a certificate of occupancy for their Tritium Lab for Polaris

(Permit #B2309-015 Issued: 2024/3/15) Two-story 1200 SF prebuilt office space inside Ursa. 1st floor-tritium lab, 2nd floor-8 office pods & 3 phone booths. This will allow them to set up and test their isotope separation and tritium storage systems.

Inspections of their mechanical systems for the tritium lab exhaust (M2408-079) and the tritium stack (M2407-008) have been moved to Monday December 9.

Electrical rough-in inspection (E2407-059) is scheduled for Friday December 6. Electrical plans include: 10 new rectifiers 330kW each, new HVAC loads of 635kVA, 760kVA, and 268kVA and new equipment loads of 330kVA, 335kVA, 295kVA, and 300kVA.

Permit extensions this week for both the capacitor racks (B2312-034) and the rectifier racks (B2405-074.)

Other outstanding permits are for filling in the pit (B2407-044) used for quartz tube production and for the modular parts of their shield wall and roof (B2304-083) which might be the best indicator of Polaris being ready for operation.

0 Comments
2024/12/05
22:02 UTC

0

Could a low temperature/pressure plasma work as a flywheel?

I was thinking the rotating core of the flywheel could be a rare earth magnet, and the plasma could be confined near the edge just using regular magnets if the temperature and pressure is kept low. The mass of the plasma compared to the mass of the magnetic flywheel would be low, and the rotation of the magnets might help keep the plasma confined. Is anyone working with plasma that is at lower relative temperatures? Can we talk about plasma related technologies, or is this strictly for doing fusion with plasma?

10 Comments
2024/12/04
19:53 UTC

3

Overview of the physics design of the EHL-2 spherical torus

https://iopscience.iop.org/article/10.1088/2058-6272/ad981a/pdf

Although being criticized, ENN is still saying using hot ion mode to reduce Bremsstrahlung radiation in its papers

https://www.reddit.com/r/fusion/comments/1h1il7y/enn_scientist_finally_admitted_that_there_does/

0 Comments
2024/12/04
03:22 UTC

6

Implications of China ban on fusion industry

Last I checked (2022) about 50% of the Rare Earth's came from China. Thet are actually not rare, but the US DOD is still trying to stand up domestic suppliers in Texas and elsewhere.

MOST US fusion firms need the HTS wire and that means using rare earth's.

What do you guys think?

8 Comments
2024/12/03
23:24 UTC

22

Fusion question threads

Just curious if anyone would like to ask anything related to Fusion power? Currently doing a PhD in plasma physics and need some fresh air from Reddit 😁 If that's not allowed in this sub I will delete the post

Edit: many interesting questions here ☺️ but I am nowhere near expert in the field so I will just call it a discussion and hopefully breaking some information barriers

22 Comments
2024/12/03
14:28 UTC

11

Looking for research or job opportunities in plasma physics for international students

Hi everyone,

I’m currently studying Engineering Physics, and I’m deeply passionate about plasma physics, fusion, and related applications. I’m seeking research opportunities, internships, or jobs in these fields that are open to international students.

I have experience with numerical simulations, data analysis, and programming in Python and C. I'm also currently learning C++ and parallel computing to further enhance my technical skills.

If you know of any programs, institutions, or projects I could explore, I’d greatly appreciate your suggestions or guidance.

Thanks in advance for your help!

5 Comments
2024/12/02
17:31 UTC

8

$1.8B in Fusion Funding Deals in 2024 (repost with Y-axis correction)

0 Comments
2024/12/02
02:50 UTC

63

Helion’s CEO just tweeted “💡”

28 Comments
2024/12/02
02:10 UTC

Back To Top