2014 Dark Horse Trifecta Year?

Point out news stories, on the net or in mainstream media, related to polywell fusion.

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prestonbarrows
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Re: 2014 Dark Horse Trifecta Year?

Postby prestonbarrows » Thu Feb 13, 2014 1:34 am


Skipjack
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Re: 2014 Dark Horse Trifecta Year?

Postby Skipjack » Thu Feb 13, 2014 5:01 am


paperburn1
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Re: 2014 Dark Horse Trifecta Year?

Postby paperburn1 » Wed Feb 19, 2014 8:19 pm

phrase of the day:
Behavior in Multi-grid Inertial Electrostatic Confinement Fusion
http://www.sppl.umd.edu/projects/02-multigrid.html


syring_289.pdf
I am not a nuclear physicist, but play one on the internet.

ladajo
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Re: 2014 Dark Horse Trifecta Year?

Postby ladajo » Thu Feb 20, 2014 1:22 pm

I would think that more grids means more grid burn out issues as well as grid losses.
I am no clear on how they think to conquer that unless I have missed something.

I get the part that the aggregate layering improves confinement at the center, but you still have ions zooming around.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)
What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

mvanwink5
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Re: 2014 Dark Horse Trifecta Year?

Postby mvanwink5 » Thu Feb 20, 2014 1:46 pm

EMC2 had magnetic protection of their nubs and still had serious problems with nub heating and consensus of outsiders is that nubs were abandoned. So it is with grids. With modeling I guess these guys think they can find the perfect grid, electron, and ion injection to avoid that. They might do it where so many have failed before, but they aren't claiming to have succeeded. I say good luck to them.
Near term, cheap, dark horse fusion hits the air waves, GF - TED, LM - Announcement. The race is on.

ladajo
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Re: 2014 Dark Horse Trifecta Year?

Postby ladajo » Thu Feb 20, 2014 5:04 pm

Agreed. I think at any meaningful densities the metal is going to be eaten.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)

What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

hanelyp
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Re: 2014 Dark Horse Trifecta Year?

Postby hanelyp » Thu Feb 20, 2014 5:41 pm

The intent of multiple grids for an IEC device is to form electric lenses that focus ions and electrons into beams, avoiding grid losses. I'm not sure how well that works in reality when you have beam scattering at the device focus.

As for nubs on the WB-6, they weren't well shielded. While they passed through a region of high magnetic field, that field was oriented as a cusp. The current through the nubs was far too small to provide usable shielding.
The daylight is uncomfortably bright for eyes so long in the dark.

ladajo
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Re: 2014 Dark Horse Trifecta Year?

Postby ladajo » Thu Feb 20, 2014 9:41 pm

I would say the current was the same as the coils, however the geometric configuration was not conducive to field concentration, thus they were unprotected.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)

What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

paperburn1
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Re: 2014 Dark Horse Trifecta Year?

Postby paperburn1 » Thu Feb 20, 2014 11:33 pm

Recent developments in the field of IEC consist of additional concentric grids to focus the ion beams to limit scattering and thermalization. The result is the multi-grid IEC. Added beam-focusing grids have been shown experimentally to increase ion residence times as well as bunch the ions into resonant packets
http://www.nasa.gov/spacetech/strg/2013_nstrf_chap.html

and this very interesting paper
http://www.google.com/url?sa=t&rct=j&q= ... 5948,d.dmQ
Get that firefly body ready
http://fti.neep.wisc.edu/iec2009/talks/ ... ysedwi.pdf
page six if it holds true.
I am not a nuclear physicist, but play one on the internet.

ladajo
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Re: 2014 Dark Horse Trifecta Year?

Postby ladajo » Fri Feb 21, 2014 1:19 am

Awful lot of high energy particles zipping around in there. Seems like an erosion and activation nightmare.

But I guess that is more an engineering problem if the math and sims are true to form.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)

What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

prestonbarrows
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Re: 2014 Dark Horse Trifecta Year?

Postby prestonbarrows » Fri Feb 21, 2014 3:54 am


paperburn1
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Re: 2014 Dark Horse Trifecta Year?

Postby paperburn1 » Fri Feb 21, 2014 3:01 pm

the claim is they have worked around the erosion problem and increased the number of passes by a factor. Two of the guys are currently working for LM.
Just saying
I am not a nuclear physicist, but play one on the internet.

ladajo
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Re: 2014 Dark Horse Trifecta Year?

Postby ladajo » Fri Feb 21, 2014 3:24 pm

It is a good find for sure.

I remain suspect on the burnoff thing. It appears that this work is more Sim than Live Test.

I understand the intent, but like many things, intent verses action trend apart in the real world.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)

What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

paperburn1
Posts: 2457
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Re: 2014 Dark Horse Trifecta Year?

Postby paperburn1 » Fri Feb 21, 2014 5:46 pm

Agreed, if it was that easy why haven't we done it before.
I am not a nuclear physicist, but play one on the internet.

ladajo
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Re: 2014 Dark Horse Trifecta Year?

Postby ladajo » Sat Feb 22, 2014 12:44 am

I liked the idea of heat recovery from the grids (plus cooling) but that still does not answer the mail about activation (proposed coolant & grid material) or embrittlement problems with a bunch of zippy 0n1's screaming about.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)

What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)


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