magrid configuration brainstorming

KitemanSA · Post by **KitemanSA** » Wed Nov 03, 2010 12:46 am

WizWom wrote:
rjaypeters wrote:"Straight" Icosidecahedron:
This makes sense.

Yup, almost as much as the bowed one!

icarus · Post by **icarus** » Thu Nov 04, 2010 2:57 am

OMG, and bowed too! Marvelous, simply marvelous. Very Happy WOW Exclamation

Now that the critical analysis/theory has checked out for Kiteman ... shall we move onto looking for investors?

KitemanSA · Post by **KitemanSA** » Fri Nov 05, 2010 12:48 am

Anyone else notice that even when I compliment other folks for their posts, icarus has to find something to snipe about? Jeeze, dude, give it a rest!

rjaypeters · Post by **rjaypeters** » Sun Nov 07, 2010 2:53 am

Single-coil octahedral (per Happyjack27, I think):

Without "cusp disruption on line-cusps." I'll add those later if these are okay.

P.S. Apologies but I didn't take the time to calculate or iterate to a perfect octahedral shape.

KitemanSA · Post by **KitemanSA** » Sun Nov 07, 2010 1:51 pm

rjaypeters wrote:Single-coil octahedral (per Happyjack27, I think):

This would be the octahedral version of the MPG coils that DrB made and tested. The story I hear is that the MPGs were the only other varient of the Polywell that made fusion. I'm not sure of the accuracy of the story.

D Tibbets · Post by **D Tibbets** » Sun Nov 07, 2010 3:45 pm

KitemanSA wrote:
rjaypeters wrote:Single-coil octahedral (per Happyjack27, I think):
This would be the octahedral version of the MPG coils that DrB made and tested. The story I hear is that the MPGs were the only other varient of the Polywell that made fusion. I'm not sure of the accuracy of the story.

I don't think that is accurate. I don't know if any of the closed box machines were tested with deuterium. Certainly WB5 had enough magnetic field strength and potential well to create measurable fusion . And WB4 certainly did. Also, I think the most impressive and telling results (from a production standpoint, not a loss stand point) was the single block copper machines (PZLx) that had many thousands of amps pushed through the effective single turn magnets to produce ~ 35,000 Gauss (3.5 Tesla). At only ~ 300V effective potential well depths, this machine produced ~ 1 million neutrons from D-D fusions per second, even at this ridiculously low potential well level.

Dan Tibbets

KitemanSA · Post by **KitemanSA** » Sun Nov 07, 2010 4:45 pm

Dan,

I think I have decyphered your statement to say that the STORY of "Only other machine" is inaccurate, not the statement that the MPG made fusion.

Did I decypher correctly?

D Tibbets · Post by **D Tibbets** » Sun Nov 07, 2010 8:07 pm

KitemanSA, yes and no. I now realize you may have been referring to the geometry rather than the specific machines. I think all of the machines were truncated cubes except for the octahedral machine you mentioned.

D Tibbets

happyjack27 · Post by **happyjack27** » Mon Nov 08, 2010 1:49 pm

rjaypeters wrote:Single-coil octahedral (per Happyjack27, I think):

Without "cusp disruption on line-cusps." I'll add those later if these are okay.

P.S. Apologies but I didn't take the time to calculate or iterate to a perfect octahedral shape.

fancy looking. yeah, that's right. cusp disruption is really just an experimental afterthought. and you could do it with 2 big-radius toroidal magnets, 1 on the tpop and 1 on the bottom, each covering 3 line cusps. though that would make the mag field less symmetric. also you could turn them so they lie flat on the sphere and thus they become "ciusp convertors" 'cause they turn line cusps into point cusps. they could be used on any design w/ x-cusps. (squeezed line cusps), not just this one.

rjaypeters · Post by **rjaypeters** » Thu Nov 11, 2010 8:47 pm

WB 7 circumscribed on a 3m sphere with 6mm coil close approach:

ladajo · Post by **ladajo** » Thu Nov 11, 2010 9:43 pm

Square plan form. WB7 was circular.

KitemanSA · Post by **KitemanSA** » Fri Nov 12, 2010 12:28 am

ladajo wrote:Square plan form. WB7 was circular.

Dr. B's WB7, not Dr N's!

rjaypeters · Post by **rjaypeters** » Fri Nov 12, 2010 1:04 am

A solution in search of a problem? I call this a cross-over. For this example I used a square planform WB 7. Imagine what you see as one-third of the needed coils:

If the heat loads are low enough, two coils can be combined. I'm not sure the added [edit: cusp is] compensated by having a coil right in front of [edit: it].

In a lighter vein, I also call them "rabbit ears."

rjaypeters · Post by **rjaypeters** » Fri Nov 12, 2010 3:23 pm

Six circular coils circumscribed on a 3m diameter sphere with 6mm spacing:

rjaypeters · Post by **rjaypeters** » Fri Nov 12, 2010 7:02 pm

The crossover on a six-coil circular pair:

Even more rabbity looking than the square coil:

Note: Coil self-close approach is 32mm. I'd make it closer, but I'm not getting any feedback, so I won't put more effort in unless requested.