Search found 8 matches

by luked
Thu Jul 08, 2010 4:19 pm
Forum: News
Topic: Any News about Polywell ?
Replies: 104
Views: 45122

I'd be much happier with my enemies having access to fusion power than having a lot of weapons-grade material available. Good point, but does anyone believe that we could buy them off by giving them fusion? We haven't had much luck buying them off with anything else we've offered. We don't really h...
by luked
Thu Jul 08, 2010 3:33 pm
Forum: News
Topic: Any News about Polywell ?
Replies: 104
Views: 45122

End result being that NKorea and Iran could retro-fit their navy with Polywell fusion, gaining the benefit of a nuclear navy that they could never achieve with fission. How about the end result being that we'll happily give them fusion reactors? That sort of invalidates the argument that somehow th...
by luked
Thu Jul 08, 2010 2:36 pm
Forum: Design
Topic: Simulation Barriers
Replies: 16
Views: 13472

If 64bit floating point is enough, the CPUs on current generation PCs can do the job, if perhaps a bit slowly. If I had the spare energy, I'd be inclined to try a simulation of one or another component effects, rather that a full up polywell. Hear hear. - How does plasma interact with the magnetic ...
by luked
Thu Jul 08, 2010 2:28 pm
Forum: Design
Topic: Simulation Barriers
Replies: 16
Views: 13472

I would certainly join Fusion@HOME if it were around. This has been brought up many times and yet none of the folks involved in simulation have ever shown any interest in it. If no one's done it, then no doubt it can't be done. Would make a good addition to the FAQ if it comes up that much. Anyway,...
by luked
Thu Jul 08, 2010 2:25 pm
Forum: Design
Topic: Simulation Barriers
Replies: 16
Views: 13472

someone before (in another post) mentioned that the nature of the polywell simulation might not lend well to distributed computing. the basis of the assertion was the amount of time it takes to access the data would be far greater than the amount of time it takes to actually crunch it. in the polyw...
by luked
Wed Jul 07, 2010 9:01 pm
Forum: Design
Topic: Simulation Barriers
Replies: 16
Views: 13472

Roughly: 64 bits (floating point) gives about 1E16 range of the non-exponent part. Normally you go to 80 bits to get a guard band for calculations. Given 64 bits, an exponent and guard band - you are down to around 48 bits or roughly 1E4 actual range (assuming differences of 1E-6 are important). It...
by luked
Wed Jul 07, 2010 5:16 pm
Forum: Design
Topic: Simulation Barriers
Replies: 16
Views: 13472

Not only computational power was involved. In his Google talk Bussard mentioned the small difference in the electron/ ion balance (~1 ppm) was so small that the calculations did not have the resolution necessary. The effects of these conditions was so small on the particle level, that any results w...
by luked
Wed Jul 07, 2010 3:58 pm
Forum: Design
Topic: Simulation Barriers
Replies: 16
Views: 13472

Simulation Barriers

Can anyone speak to the difficulties in simulating polywells? I seem to remember that at some point I read that Dr. B estimated a budget of $8M for simulation, and that construction would be much lower. Does anyone know where this number comes from? Computing resources should get cheaper by about a ...