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phantom power Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 11:49 AM
Original message
Cutting edge plasma research
In Which I Atone For My Cynicism By Posting New Possibilities In Plasma Physics For Energy

(I think there are three separate projects described here, although they don't make that very clear)

Prager and his team, for instance, run the Madison Symmetric Torus (MST) - the largest fusion-energy experiment on campus. Shaped like a donut, the MST holds plasma heated to 10 million degrees. But instead of using a strong magnetic field to hold the plasma, Prager is exploring whether weaker - and therefore more economical - magnetic fields could accomplish the same task. The work has led to new insights about properties of plasma, and, in turn, has given rise to unique partnerships with astrophysicists, who are using the MST to explore basic questions about the plasma around black holes, galactic discs and other mysterious happenings of the solar system.

"We are now starting to appreciate and explore links between plasmas in the lab and plasmas in the universe, which is really interesting," Prager says.

Working with a device known as Pegasus, Fonck and his group are also exploring weaker magnetic fields, but are approaching the issue in a different way. Unlike the donut shape of the MST, the plasma within Pegasus looks more like a ball with a small hole in it, which influences how the plasma behaves. Fonck's work relies on the same fundamental physics that is at the heart of ITER's design, and could one day lead to new methods for testing large-scale components in future fusion reactors.

David Anderson, a professor of electrical and computer engineering and another plasma researcher at UW-Madison, recently made waves when he designed a new device that holds plasma within a magnetic field, without an electric current in the plasma to power the field.

"The current is running in external wires and not in the plasma itself, and that represents a tremendous engineering advantage," says Anderson, who works with a plasma instrument known as the Helically Symmetric eXperiment, the only machine of its kind in the world. Plasma can become unstable in the presence of a current, so Anderson is exploring ways to trick the plasma into staying in place by twisting the surrounding magnetic field into a special - and highly complicated - shape.

http://www.sciencedaily.com/releases/2006/05/060530174750.htm


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papau Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 11:53 AM
Response to Original message
1. This stuff is for real - MIT's fusion idea is below:
There are three companies pursuing hydrogen-boron plasma toroid fusion, Paul Koloc, Prometheus II, Eric Lerner, Focus Fusion and EPS. A NYT Thomas Friedman column wished this would become a Manhattan Project for Clean Energy.

There is an interesting chat on this topic by Clint Seward of Electron Power Systems http://www.electronpowersystems.com with Rodney T. Cox of http://www.powerchips.gi/ chat on EPS with Eric Lerner comments at:
http://www.scienceforums.net/forums/showthread.php?t=6965

Per review for the Office of the Secretary of Defense:

"MIT considers these plasmas a revolutionary breakthrough, with Delphi's
chief scientist and senior manager for advanced technology both agreeing
that EST/SPT physics are repeatable and theoretically explainable. MIT and
EPS have jointly authored numerous professional papers describing their
work. (Delphi is a $33B company, the spun off Delco Division of General
Motors - but undergoing bankrupcy reorg.).

Revolutionary Impact: High - reliable generation and acceleration of these
plasmas using compact mobile machinery could provide US forces with a unique
generic defense against ballistic and cruise missiles, manned and unmanned
aircraft, and kinetic-energy projectiles of all sizes, velocities and
compositions."

Details:

Technology Review of Electron Power Systems (by an independent consulting
group) for Office Of The Secretary Of Defense July 2004

Technology Title: Electron spiral toroids (EST) as kinetic-energy weapons
(KEWs)

Development Organization: Electron Power Systems, Inc., Acton, Mass.

Description: EPS teamed with MIT's Plasma Science and Fusion Center under an
STTR grant to develop a theoretical framework and laboratory methods for
reliably creating small (0.5-1.0 cm diameter) self-organized plasmas, called
"electron spiral toroids" (ESTs) or "spiral plasma toroids" (SPTs). EST
electrons travel in parallel orbits around a torus in densities sufficient
to create a stable, self-sustaining internal magnetic field. These novel
laboratory-level plasmas, whose physics resembles that of ball lightning,
are unusual in that they remain stable in partial atmospheres without
requiring external magnetic fields for their containment, yet can also be
accelerated in a directed fashion to potentially very high velocities (e.g.,
600 km/sec) and kinetic energies. Parallel work on formation and magnetic
acceleration of "compact toroids" is also underway at DoE's Livermore lab
and at Air Force Research Laboratory (AFRL) at Kirtland AFB, NM, although
these plasmas - which can only exist in vacuum - require large (multi-meter
long) machinery that uses magnetic field pressures associated with "Tokamak"
fusion reactors to create large-diameter (0.5-1.0 meter) plasmas, which must
then be greatly reduced in diameter and volume to be useful. By contrast,
EPS uses much smaller, cheaper hardware to repeatably generate
high-ion-density plasmas that have remained stable in air for up to 0.6
seconds at 1-Torr atmospheric pressures. The EPS/MIT work has drawn interest
from MDA and DTRA for DEW/KEW applications and from Delphi Corporation, a
major automotive electronics firm, which envisions an automotive mini-fusion
reactor that would collide two small toroids generated by 1-meter-long
"neutron tubes" and capture the heat from their collision.

Potential Operational Payoff: used as KEWs, even a tiny (microscopic-scale)
EST would generate enough kinetic energy to destroy any military vehicle or
projectile operating in the atmosphere, including solid-rod anti-armor
penetrators. These charge-neutral plasmas would be produced in large numbers
in rapid succession to form a steerable beam. Impact velocities of 600
km/sec, possibly several times higher, may be possible, based on MIT's
extrapolation of AFRL's compact-toroid acceleration experiments for vacuum.

Metrics:
- Effects: target destruction by kinetic impacts far above hyper velocities
(defined by the speed of sound in metal and nonmetal targets)
- Speed: up to 600 km/sec (MIT estimate), possibly up to 2000 km/sec (EPS
estimate)
- Range: endoatmospheric line-of-sight up to space/atmosphere boundary
(officially defined as 62 miles)
- Power requirements: EPS proposes using EST mini-fusion reactors, whose
initial power could be provided by a car battery, to produce and accelerate
its ESTs.

Cost: no cost data available. The complexity of reliable mini-toroid
formation and acceleration with compact, relatively low-cost equipment
remains to be determined. Yet the fact that the EPS/MIT STTR work this
technology has attracted interest from Delphi is very significant, as the
automotive electronics industry is considered to be extremely demanding of
functionality per dollar and pound (e.g., mil-spec performance at
Wal-Mart-class 'commodity' prices).

Estimated Development Funding, FY 2005-2011 (combined KEW, mini-reactor)
- appr. $2M so far (Army Research Office, NASA SBIR, NASA-IAC (Institute for
Advanced Concepts) grant, BMDO STTR for $1M). EPS estimate: over FY
2005-2009, would need $0.5-$1.0M/yr (not including funding for MIT support),
but with a Phase 1 and 2 SBIR, could achieve a lab demonstration (TRL 4-5)
within 2.5-3 years of a proof-of-principle device that hits targets with
visible kinetic damage. Industrial co-funding from strategic partners
(agreements with Raytheon, Delphi (formerly GM Delco) and Titan Pulse Power)
could accelerate this.
-MIT estimate: with adequate staff and facilities funding ("at least
$2-$5M/year"), could demonstrate basic physics within 2 years, followed by
development of an integratable engineering package.

TRL 3-4. MIT considers these plasmas a revolutionary breakthrough, with
Delphi's chief scientist and senior manager for advanced technology both
agreeing that EST/SPT physics are repeatable and theoretically explainable.
MIT and EPS have jointly authored numerous professional papers describing
their work.

Revolutionary Impact: High - reliable generation and acceleration of these
plasmas using compact mobile machinery could provide US forces with a unique
generic defense against ballistic and cruise missiles, manned and unmanned
aircraft, and kinetic-energy projectiles of all sizes, velocities and
compositions."

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phantom power Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 12:19 PM
Response to Reply #1
2. "Electron spiral toroids (EST) as kinetic-energy weapons"
I approve of any project that aims to make the real world more like the science fiction world in my head. Although it's also sad that so much good research can only get funding if it's pitched as yet another new way for us to kill each other.

"Phased-plasma rifle in the forty watt range."
"Hey, just what you see, pal."
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FreakinDJ Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 12:24 PM
Response to Reply #2
4. Yes I remember
A physicist trying to convince me they where actually only “recycling” the plutonium.

I'm just quitely nodding my head up and down thinking "Oh Sh^& I need to get a better job"
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FreakinDJ Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 12:21 PM
Response to Original message
3. What is the time estimate for ITER
last I heard it was 2045.

This surely could step up that time frame
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papau Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 12:33 PM
Response to Reply #3
5. I agree sooner than 2045 - if it gets funding n/t
n/t
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phantom power Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 01:03 PM
Response to Reply #3
6. The biggest delays by far are political...
As near as I can tell from their press releases, they've spent something like 20 years doing nothing but arguing about where it's going to be built. The thing literally could have been operating today, if they had just picked a place and started building it.

They seem to have agreed on a location finally (France), which is being billed as a major milestone.

"The wheel?? It's the simplest machine in the universe!"
"If you're so smart, tell us what color it should be!"
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FreakinDJ Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 01:22 PM
Response to Reply #6
7. The delays are mostly de-classifying existing research
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phantom power Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 01:35 PM
Response to Reply #7
8. Interesting, I thought this was going to be based on consortium technology
It's a scale-up of previous ITER reactors, isn't it?
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FreakinDJ Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jun-01-06 01:49 PM
Response to Reply #8
9. we never learned about it until the 90s
They were trying to ignite it in the early 80s yet we never learned about it until the 90s
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