Search found 79 matches

by pstudier
Wed Nov 07, 2007 6:07 am
Forum: Theory
Topic: MgB2 Superconductors
Replies: 7
Views: 5797

More importantly, here is a company who has actually used magnesium diboride in a real product:
http://www.columbussuperconductors.com/ ... elease.pdf
by pstudier
Mon Oct 22, 2007 12:11 am
Forum: Design
Topic: Control Processor
Replies: 63
Views: 44711

I have programmed in many languages including assembler and FORTH. FORTH code is difficult to read. For example, all the arithmetic expressions are in reverse polish notation. It lends itself well to writing unreadable code. Any decent Real Time Operating System for an embedded system should be fast...
by pstudier
Sat Aug 25, 2007 3:22 am
Forum: Design
Topic: Experiments with solid-state magnets
Replies: 51
Views: 38687

This toroidal magnet violates Maxwell's equations. A loop of magnetic field must interlock with a loop of current. In a permanent magnet, the current flows inside the material in loops that enclose the field. For example, in a cylindrical magnet with the poles on the ends, the currents are on the cu...
by pstudier
Mon Aug 13, 2007 10:24 pm
Forum: Fund-Raising
Topic: Allen and Gates as philanthropists of fusion energy
Replies: 15
Views: 38331

Perhaps thats a good reason to build it someplace with less regulations. I might suggest Sealand ;-) Long way to string the underwater extension cord, and I hope you can cool the prototype with salt water. http://en.wikipedia.org/wiki/Principality_of_Sealand Maybe China. When I was there a few year...
by pstudier
Mon Aug 13, 2007 7:24 pm
Forum: Fund-Raising
Topic: Allen and Gates as philanthropists of fusion energy
Replies: 15
Views: 38331

My bet is that it may have to do something with the fabled "tokamak mafia". Enough with the conspiracy nonsense. It's the NRC. Today it would take about 6 years to get permission to build a reactor of pre-approved design. It takes years, and IIRC, about 100 million dollars to license a PWR or a BWR...
by pstudier
Thu Aug 09, 2007 11:01 pm
Forum: Theory
Topic: Polywell Parameters
Replies: 33
Views: 28341

Well, if the grid has to be positive to contain the electrons, then the ions will be repelled by the grid and will not be contained. Yep. Except that the ions are contained by attraction to the electrons. Except for the fusion ions which escape from the reaction area due to their high energy. If on...
by pstudier
Sat Aug 04, 2007 5:37 am
Forum: Theory
Topic: Polywell Parameters
Replies: 33
Views: 28341

The video at the first link is totally unrealistic. It shows electrons leaving the cube in the center of the coils going parallel to the field, and then coming back even after they leave the area of maximum magnetic field. Such an electron will go straight off into infinity, just like in a mirror m...
by pstudier
Tue Jul 31, 2007 6:27 am
Forum: Fund-Raising
Topic: Cutting Costs?
Replies: 32
Views: 33159

The least expensive thing would be a good simulation. Indrek has a real good start on this. For redundancy's sake, here is his website: http://www.mare.ee/indrek/ephi/ He even includes source code!!!
by pstudier
Sat Jul 28, 2007 9:50 pm
Forum: Awareness
Topic: Let's make an FAQ of Polywell
Replies: 15
Views: 17602

Why not put this information on http://wiki.polywell.org ? IMHO, an encyclopedia is more organized than a FAQ.
by pstudier
Sat Jul 28, 2007 8:14 pm
Forum: Theory
Topic: Polywell Parameters
Replies: 33
Views: 28341

The video at the first link is totally unrealistic. It shows electrons leaving the cube in the center of the coils going parallel to the field, and then coming back even after they leave the area of maximum magnetic field. Such an electron will go straight off into infinity, just like in a mirror m...
by pstudier
Fri Jul 27, 2007 4:56 am
Forum: Design
Topic: Experiments with solid-state magnets
Replies: 51
Views: 38687

PM's just have too much electron loss, so a coil will always be more efficient. I'm not positive about this. The Van Allen Radiation Belts are confined with a permanent magnet called the Earth. The mirror losses cause the northern lights. Don't know the confinement time or density or temperature. M...
by pstudier
Fri Jul 27, 2007 4:24 am
Forum: Theory
Topic: Fusion litelature and website suggestions
Replies: 37
Views: 42763

I just discovered the Polywell Project Wiki at http://wiki.polywell.org . Set up about a month ago, requires approval to edit, and no significant content yet. No copyright notice so I suppose it is copyright by default. A good place to put links, technical stuff, etc.
by pstudier
Wed Jul 25, 2007 8:27 pm
Forum: News
Topic: Arnie funding Polywell?
Replies: 17
Views: 45569

Re: California NOT funding Polywell research

He pointed out that when a news site doesn't even have a phone number, you have to wonder about their credibility. It is worse than that. The domain is registered to GoDaddy.com, see http://who.godaddy.com/WhoIsVerify.aspx?domain=nextenergynews.com&prog_id=godaddy . DomainsByProxy.com sole business...
by pstudier
Tue Jul 24, 2007 3:37 am
Forum: Theory
Topic: well depth and electron counts
Replies: 11
Views: 11079

Re: thanks

Thanks guys. It helps to know even a rough order, 1E12 and up particles is gonna put run time in months even for a few steps. I know there are engineering limits that make going much smaller than WB6's 15cm diameter infeasible. If simulating just the electrons with the B field and the electric fiel...
by pstudier
Mon Jul 23, 2007 11:19 pm
Forum: Theory
Topic: well depth and electron counts
Replies: 11
Views: 11079

For beta=1, electron density can be calculated from the energy density of the magnetic field and the kinetic energy of the electrons. You can't assume beta=1. That is the absolute maximum pressure that excludes all the magnetic field, and is generally not achieved. At http://www.mare.ee/indrek/ephi...