• GlueBear [they/them, comrade/them]
    ·
    8 days ago

    China is the dream; they're like one of the few countries and only super power that's actually working towards the betterment of humanity

  • NephewAlphaBravo [he/him]
    ·
    edit-2
    8 days ago

    Fuck yeah

    Do we have to call it an "artificial sun"? Because that's... weirdly sinister. And "tokamak" or "plasma reactor" sound badass already.

  • Tunnelvision [they/them]
    ·
    8 days ago

    Looking at the stark difference between contemporary Chinese and American science, it’s basically insane to think America not even that long ago was the scientific center of the world.

    • HexBroke [any, comrade/them]
      ·
      8 days ago

      MIT is working on a similar reactor design with some private firm, not as far progressed

      Detailed study of magnets built by MIT and Commonwealth Fusion Systems confirms they meet requirements for an economic, compact fusion power plant.

      https://news.mit.edu/2024/tests-show-high-temperature-superconducting-magnets-fusion-ready-0304

  • radiofreeval [any]
    ·
    8 days ago

    The article doesn't say what the Q value is. I'm assuming it's below 1.

    • 420blazeit69 [he/him]
      ·
      8 days ago

      I'd imagine, but I found this interesting:

      Currently the maximum Q value achieved by humans is 1.53.

      Had no idea someone had managed to get more energy out of a fusion device than they put in. Must have been unable to sustain it for any significant length of time, but still seems important.

      • Owl [he/him]
        ·
        8 days ago

        The Q=1.53 was done at the National Ignition Facility using inertial confinement fusion, which is significant for plasma research (and probably bombs), but can't be used to generate power.

      • QuillcrestFalconer [he/him]
        ·
        edit-2
        8 days ago

        Also this is just plasma gain, not whole system gain. To have a commercially viable reactor your probably need Q total > 10 at least. No system build so far even has a Q total of 1

      • impartial_fanboy [he/him]
        ·
        8 days ago

        It was the NIF two years ago but it's also not going to be generating power ever, it was just a demonstration/proof of concept.

      • radiofreeval [any]
        ·
        8 days ago

        Yes, and cold fusion is 10 years away. They are not going to manage that in 5 years.

        • HexBroke [any, comrade/them]
          ·
          8 days ago

          Why do you think that? The use of higher temperature superconductors is stated to significantly reduce size and construction time so you don't have to wait 30 years for ITER.

          Q>10 is one thing, being able to sustain that for useful periods, cheap fuel, accessible tritium) radioactive waste and not having to rebuild the reactor every few years are far more difficult problems.

          • radiofreeval [any]
            ·
            8 days ago

            If estimates on fusion were reliable we would have had cold fusion in 1970. They can move faster but there are so many unknown unknowns.

            • HexBroke [any, comrade/them]
              ·
              edit-2
              7 days ago

              Right, but they weren't building these sort of functioning scaled down demonstrators in the 70s

              Is there even a theoretical model that suggests cold fusion could occur?

              • radiofreeval [any]
                ·
                7 days ago

                I hope they can do it, but I will eat a shoe and post it to this website if they hit Q>10 by 2027