Search found 78 matches

by prestonbarrows
Sat Dec 21, 2013 8:25 am
Forum: Theory
Topic: Convergent Scientific videos are up.
Replies: 7
Views: 4432

Re: Convergent Scientific videos are up.

These show their 'hybrid' mode with a magnetic grid around a standard IEC style grid. Its not clear if that is what they were referencing with those numbers. Looks like a different setup though judging by the '1.b' label.

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by prestonbarrows
Thu Dec 19, 2013 4:24 am
Forum: Networking
Topic: Phoenix Nuclear Labs, LLC
Replies: 1
Views: 6890

Re: Phoenix Nuclear Labs, LLC

Shine Medical Technologies is actually the company designing the medical isotope production lines. They are a spin-off company of Phoenix Nuclear Labs . Phoenix designs, builds, and sells neutron generators, ion sources, and the custom power supplies to run them. One of these generators would drive...
by prestonbarrows
Thu Dec 19, 2013 3:03 am
Forum: Theory
Topic: Convergent Scientific videos are up.
Replies: 7
Views: 4432

Re: Convergent Scientific videos are up.

Just watched the presentation. I'll try to answer some of your questions. -To first order, the electron energy at the center (in eV) is just the voltage applied to the grid. In reality, this is broadened into an energy spectrum by collisions. Neglecting collisions, a particle's energy simply trades ...
by prestonbarrows
Mon Dec 16, 2013 6:16 am
Forum: Theory
Topic: particle simulation using fast multiple method
Replies: 45
Views: 15553

Re: particle simulation using fast multiple method

also still no visual display. woudl probably pretty easy to make - just instantiate a JFrame, put a canvass on it, draw on the canvass. (might want to add a 3-d transform so it can be zoomed and panned and rotated.) I would suggest using HDF5 for dumping/loading/visualizing your results. It is an o...
by prestonbarrows
Tue Dec 10, 2013 4:03 am
Forum: Theory
Topic: Polywell simulation benchmarks
Replies: 30
Views: 14592

Re: Polywell simulation benchmarks

If your code is open-source, where is it? Where can it be downloaded? The example in the OP uses some proprietary code so can't share that. The second example is completely by myself in python using only open source libraries. I am not a programmer so it is not great and still needs a lot of work b...
by prestonbarrows
Mon Dec 09, 2013 7:30 pm
Forum: Theory
Topic: WB-6 tests results: FOUR successful tests. Lab notes
Replies: 35
Views: 17085

Re: WB-6 tests results: FOUR successful tests. Lab notes

My worry is I have still never seen a legitimate set of data showing neutron production rates and what sort of operating parameters produced them. There are just 2-3 mentions 10^9 n/s DD in whitepapers and presentations well after the fact. There are a number of great papers from the Sydney group de...
by prestonbarrows
Sun Dec 08, 2013 1:35 am
Forum: Theory
Topic: WB-6 tests results: FOUR successful tests. Lab notes
Replies: 35
Views: 17085

Re: WB-6 tests results: FOUR successful tests. Lab notes

Does anyone have a copy of the PDF listed in the original post?

bussard_wb6rpt080604fnl0107.pdf

If so, could you rehost it someplace? It has been taken down and can't find it anyplace else on the web.
by prestonbarrows
Sun Dec 01, 2013 9:45 pm
Forum: Fund-Raising
Topic: Is there a market for A hobbyist Machine?
Replies: 10
Views: 13113

Re: Is there a market for A hobbyist Machine?

Another way to put it in perspective: An 18" X 18" X 1/4" sheet of stainless steel alone costs $545 http://www.mcmaster.com/#9064k18/=pmfrzp An 18" X 18" X 1/4" sheet of aluminum alone costs $88 http://www.mcmaster.com/#89155k27/=pmfs86 So, even if you weld up your own vacuum chamber from scratch, j...
by prestonbarrows
Sun Dec 01, 2013 7:57 pm
Forum: Fund-Raising
Topic: Is there a market for A hobbyist Machine?
Replies: 10
Views: 13113

Re: Is there a market for A hobbyist Machine?

$500 is a stupendously low price. There is no way that is close to possible. Here's a quick list of items and rough prices (some from online, some pulled out of my ass from experience building similar systems). An off-the-shelf 1.5' (18") diameter vacuum chamber alone is in the ballpark of $5000-10,...
by prestonbarrows
Mon Oct 21, 2013 3:54 pm
Forum: Theory
Topic: Papers on polywell research
Replies: 2
Views: 2865

Re: Papers on polywell research

There are a whole bunch of papers/reports hosted on Askmar. Includes many from Bussard and EMC2 as well as other sources on topics either directly related to IEC/polywell or associated support technologies.
by prestonbarrows
Sun Oct 13, 2013 11:58 pm
Forum: Theory
Topic: Polywell simulation benchmarks
Replies: 30
Views: 14592

Re: Polywell simulation benchmarks

Quick example of output from my non-self-consistent (static fields) code so far. Semi-randomized initial velocities in a uniform b-field. Colored by v parallel to B.
Image
by prestonbarrows
Sun Oct 13, 2013 11:43 pm
Forum: Theory
Topic: Polywell simulation benchmarks
Replies: 30
Views: 14592

Re: Polywell simulation benchmarks

By using B and your comments about the Lorentz force and helical particle paths, it seems you are assuming the Polywell plasma is magnatized. This is almost completly wrong within the Wiffleball border. Ideally the ions do not interact with the B field at all... ...Keep in mind that each charged pa...
by prestonbarrows
Wed Sep 25, 2013 2:58 pm
Forum: Theory
Topic: Polywell simulation benchmarks
Replies: 30
Views: 14592

Re: Polywell simulation benchmarks

I'll try to answer some of your questions. -The grid is at high voltage inside a grounded spherical 'chamber'. -The particles are 'born' in free space at a given position with given velocity. -Motion of a particle is calculated using the "Boris" method to apply the Lorentz force d/dt(X) = V d/dt(V) ...
by prestonbarrows
Mon Sep 09, 2013 4:14 pm
Forum: Theory
Topic: Polywell simulation benchmarks
Replies: 30
Views: 14592

Re: Polywell simulation benchmarks

...The capacitors were large banks located outside the vacuum chamber and provided the power to the surface of the magrid (up to ~ 12,000 V and ~ 45 amps during Beta ~ one steady state conditions in WB6)... Interesting, I always presumed the grid potential was constant from a standard HV supply. Bu...
by prestonbarrows
Sat Sep 07, 2013 8:16 pm
Forum: Theory
Topic: magrid configuration brainstorming
Replies: 632
Views: 155818

Re:

... You simply cannot plot all the information at once – it’s too mind-boggling. You’re better off learning how to plot only certain subsets of the 3D magnetic field lines in question. In 2D, magnetic field lines (B-lines) form closed loops. In 3D, magnetic field lines (B-lines) generally – never e...