Search found 427 matches

by jmc
Tue Mar 11, 2008 9:37 pm
Forum: General
Topic: Dumb Idea
Replies: 7
Views: 4418

From the point of view of just fusoring, you might be able to get a decent yield of alpha particles though, enough for an entertaining science demonstration, most reactions in a fusor are beam background gas reactions, in the case of a solid (preferably hollow) boron cathode sphere your background d...
by jmc
Mon Mar 10, 2008 9:02 pm
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

I thought the levitating dipole had the highest density gradient in the centre and it decreased as you went outward, that bad curvature. Also how are the magnets cooled from the ion flux present in a fusion reactor if they are suspended in mid-air
by jmc
Thu Mar 06, 2008 9:40 am
Forum: Theory
Topic: What's the big (64-bit) deal, anyway?
Replies: 49
Views: 29616

Re: What's the big (64-bit) deal, anyway?

The device is almost electrically neutral. The departure from neutrality to create a 100 KV well is only one part in a million, when you have a density of 10^12 cm^3. The departure from neutrality is so small that we found current computer codes and computers available to us were incapable of analy...
by jmc
Wed Mar 05, 2008 7:18 pm
Forum: Theory
Topic: Earthed Plate screening for WB5 repellors
Replies: 38
Views: 17466

Having said that, even if the current does change the field shape, so long as it does so in a predictable repeatable manner the design can be adjusted accordingly.
by jmc
Wed Mar 05, 2008 2:08 pm
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

Sorry Helius, I might have been misunderstood. Might only point was that you shouldn't divert money away from tokamaks until a high performing alternative is found. I fully agree with MSimon that unless Nebels WB7 is a complete catastrophy it would be well worth spending up to 20 million to find out...
by jmc
Wed Mar 05, 2008 1:36 pm
Forum: Theory
Topic: Earthed Plate screening for WB5 repellors
Replies: 38
Views: 17466

Cool down? I though their larmor orbits got smaller as they cooled down. In addition to that I though that classically at least (optimistically ignoring turbulent waves) electrons had to collide with ions for a net change in position of the centres of guiding centres to take place and thus outward d...
by jmc
Sat Mar 01, 2008 1:54 pm
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

Yes but even Tokamaks started out at a low level low-budget program. Originally infact nobody thought they'd work as well as stellerators. The tokamak programme only ballooned in size once the outstripped the other machines in meassured performance. Like I said before we should investigate all the d...
by jmc
Sat Mar 01, 2008 1:47 pm
Forum: Theory
Topic: Earthed Plate screening for WB5 repellors
Replies: 38
Views: 17466

But the magnetic field already insulates the electrons from the screening grid, if its positioned right (and assuming low electron cross-field transport)
by jmc
Fri Feb 29, 2008 10:44 am
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

Bussard was elated by WB6 because it just about barely might have worked in producing neutron counts above that of other IEC devices Relative to the drive of other Hirsch-Farnsworth and Elmore-Tuck-Watson devices, yes, it did outstrip those devices. Line cusps can be eliminated or at the very least...
by jmc
Fri Feb 29, 2008 10:36 am
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

Maybe they're overstating it, but doesn't this prove Rider wrong? If they form a double well, doesn't that mean they don't collapse to thermal equilibrium? It only proves Rider wrong if they attained breakeven. The crux of the issue of maxwellization is that in order to get fusion, particles have t...
by jmc
Fri Feb 29, 2008 10:26 am
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

Who says we can solve them on a small budget? Maybe we can, maybe we can't. 1)In fact there is, at least to some extent. We know from that Japanese study that IEC devices form a double well, something that had been disputed. . Bussard was elated by WB6 because it just about barely might have worked...
by jmc
Fri Feb 29, 2008 10:10 am
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

MSimon wrote:I saw a paper on this in the last week or two. I'll see if I can dig it up. It seemed like the paper described a well known phenomenon.
I'd be really interested to see that.
by jmc
Fri Feb 29, 2008 10:05 am
Forum: Theory
Topic: Earthed Plate screening for WB5 repellors
Replies: 38
Views: 17466

If you try to cheat, they'll bite you. You are free to try stuff like this if you wish, but my advice is to build repeller structures in a manner that allows you to conveniently remove them. Why would removing them be good? I thought that in Bussard's Askmar paper he stated that WB5 could get somet...
by jmc
Thu Feb 28, 2008 5:34 pm
Forum: Awareness
Topic: Let us start discrediting tokamak fusion. Wrong Shape.
Replies: 61
Views: 53998

His work is mainstream in the sense that it involves hot ions colliding with each other at high energy. Its perfectly physically plausible in that sense. On the annealing front, are you referring to synchronisation in the Zafman Trap? I read something about that in Thomas McGuire's thesis, it was ve...
by jmc
Thu Feb 28, 2008 5:02 pm
Forum: Theory
Topic: The CBFR is an IEC scheme, right? Your help solicited
Replies: 23
Views: 12115

I thought the CFBR was an FRC, that is a mirror machine plugged at the end by a zpinch (I'm not an expert). I believe mirror machines can be charged to a negative voltage though. So there and Electrostatic side to the confinement.