Talk-Polywell.org

Probably in the future when high Tesla HTSC will become more common there will be a renaissance to this approach.

ohiovr wrote: ↑

Sat Jan 14, 2023 4:03 pm

I was wondering if people were still looking for virtual cathodes.

I am impressed. Quote: "Over the space of 6 months we designed and built a 300 kV DC feedthrough for Ultra-High vacuum pressure" If you've got an interesting use case for > 100kV feel free to reach out depending on interest we may be making our 300 kV units available commercially in limited numbers .

Is there any critical tech which is enabling this now? As I wrote before the critical tech is the high Tesla fields of actual (and coming) generation. They will enable to overcome a plethora of past limitations and there will be a renaissance of many older designs. Of course this does not mean that...

Looking forward to 2023, hopefully the good news will not stop coming.

Happy holidays to everyone!

Contrary to what I wrote few months ago, it seems that their lead engineer (Moein Borghei) did actually manage to find a new design for enabling high voltage feedthrough to high vacuum. They are actually testing a 300 kV prototype in the mA range, so I stand corrected. If they can scale up the curre...

What feedback is needed? I don't remember any mention of active stabilization. Is the FRC formation/acceleration/compression process not predictable enough? - In the formation there must be a feedback loop to ensure that the shape of the 2 FRC is the most similar possible to ensure an uniform impac...

In science consensus is irrelevant. What is relevant is reproducible results. The greatest scientists in history are great precisely because they broke with the consensus. There is no such thing as consensus science. If it’s consensus, it isn’t science. If it’s science, it isn’t consensus. Period.”...

A point that David Kirtley makes, as we can see based on the short plasma window of stability, is that power electronics that have to operate at such high frequency (short pulse width), current, and voltage are relatively recent as a commercial product. Hence, Helion's observation that their approa...

At 24:30 - 27:30 he discloses that one of the key parameters to obtain this (and other positive features) is that the formation of the Merged FRC must happen with a supersonic speed of the two starting FRC. I think at >1 million miles per hour they got that covered ;) Yes, i wanted to point it out ...

Great Princeton University presentation by David Kirtley. Should answer most of the questions asked by people (except for the direct energy conversion). It hopefully addresses the rotational instability concerns that Giorgio had. I believe it might be similar to the talk he gave at APS this year: h...

Patent A is listed as filed Nov-20 and published Nov-22. Patent B is listed as filed Nov-21 and published May-22. I don't know if the different patent offices confuse things or not. The publishing date is referring to the US publication only. Patent A: Application: EP19208258.4 of Nov. 11, 2019 WIP...

Actually these are two different patents, as the URLs seem to imply: Mine above is ...patent/20220367069 call this patent A Yours is ...patent/WO2022101356A1..... call this patent B and leaving aside the reference numbers, the text is different! You are totally right, I didn't notice that their ori...

Found this, patent application from 2020 https://patents.justia.com/patent/20220367069 Added: the diagrams seem to me to be MIA. Maybe someone familiar might find the patent application at USTPO: the site is greek to me. Nice finding. The PDF of the patent with drawings is available here. As I was ...

A mix of older ideas with a twist of innovation, so I would not hold my breath for exceptional plasma stability. Unless they discovered some unique self stabilizing behavior in this "convex" configuration they will suffer from the same issues as everyone else. Anyhow is still nice to see newer ideas...

Indeed, in general the big benefit of an increased field is the smoothing and prevention of the onset of instabilities and thus Tokamaks (especially the spherical ones) will get a great boost in performances. Regarding Polywell, I need to clarify before that to me the whole idea of the High Beta reg...