Talk-Polywell.org

On the other hand, plasma compression is unproven for Zap, & they admit that their latest modeling is where their confidence lies. Also, their machine is not that expensive to build & the reason their time line for Q>1 is short (2023 as I recall, & their machine is up & running as we speak). So, I ...

Again, it might as well be that they solved the issue and didn't want to disclose it, no one knows, but the issue is real and is there from 15 years waiting to be solved as it is a roadblock for everyone working with FRCs and hoping to get to Q>1. Is this what Dennis Whyte has in mind when he says ...

Indeed I checked and you are correct, the 1 ms value was for the Trenta and they (officially) didn't reach it as confinement stopped at 0.04 ms due to the rotational instabilities as I have been saying. Reference please! Venti was the one with 0.04 ms TauE, IIRC. Trenta did significantly better, AF...

According the picture you linked Tpulse < 0.5 ms (500 us), so the 100 us that I was remembering is into that range, and anyhow anything above 40 us will require to solve the issues of the n=2 rotational instabilities. I will look anyhow for the source for your reference tomorrow . And if they are a...

That's exactly what I am saying from the start. Tilt Instabilities is not the issue, n=2 rotational instabilities are the issue. Unless you fix that you cannot have a stable field over 40 uSec. Nope the n=2 instabilities set on AFTER the tilt instabilities and the onset of those is extended to the ...

You might want to watch it again, especially starting at 6:55. The equation you want to look at for tilt instability is s*/e < 5 With the crucial point that David makes at 7:33: "this enables to build systems that have a theoretical stability limit in MHD stability the us or ns level but actually e...

Here as promised: 1) Helion news release: Quote: Fusion reaction rates and particle confinement meet or exceed traditional modified-Lower Hybrid Drift (LHD) FRC energy confinement and overall configuration time is limited as expected by the onset of n=2 rotational instability. 2) Video presentation ...

Rotational instabilities (due to the centrifugal force of the plasma) at the n=2 mode are the main issue. These are the typical disruptive instability in all the FRC machines. Helion and TAE have been struggling with this issue (among many others) for the last decade at least. n=2 instabilities are...

It will be a fully structured FRC only IF they will be able to overcome the rotational instabilities that are limiting the confinement time. And this is one of those big "IF" that has been plaguing them (and TAE) from 2010 and that both are still struggling with up to the start of 2022 according th...

Getting a soup of charged particles does not directly imply that you can harvest those charges. It is NOT a soup. It is still a fully structured FRC. It will be a fully structured FRC only IF they will be able to overcome the rotational instabilities that are limiting the confinement time. And this...

:D There is an equation in the illustration. I would say that the formula seems a solution of the Grad-Shafranov equation for the electric induction field (D). The Grad-Shafranov is frequently used in the study of the magnetic flux surfaces in Tokamaks or the Sun or other MHDs, but it is the first t...

They get charged particles from the D-D and D-He3 reactions (protons, Tritons, He3, He4 are all charged). So all of those branches result in charged particles. They have done it, just not with net electricity out. But they have done it about a 1million times, probably more, first in 2015. I don't w...

The patent covers a broad range of design options and variations. They have this covered in the patent, but they do not have to do it. I am 100% sure that they do not intend to use a Li- blanket in the foreseeable future. I got that confirmed by David Kirtley.They think that they can get by without...

You did a good research.
It seems just another pork barrel grant. I do not see any new idea or innovation in the word soup.

Sorry for late reply, I had to take urgently a plane back to Europe to solve some local made mess and I didn't have any time to connect. Their blanket diameter is 3 meter, so also the breeding and separation of the newly bred Tritium is not a concern as we have plenty of literature on both these poi...