On 12/16/22 10:56 AM, cody dooderson wrote:
I had never heard of a transatlantic power grid. That is an
interesting idea. The sun is probably shining somewhere on the earth
at any given time. Would a lot of energy get wasted with the long
distances?
Nikola Tesla is rolling in his magnetically shielded grave hearing all
this wasteful and under-inspired talk of long-range power transmission
<https://theconversation.com/nikola-tesla-5g-network-could-realise-his-dream-of-wireless-electricity-a-century-after-experiments-failed-158665#:~:text=He%20theorised%20that%20electricity%20could,electricity%20supply%20were%20never%20realised.>
via wires?
my SF addled brain conjures a snow-piercer
<https://www.tntdrama.com/snowpiercer> style earth-circumscribing
rail-line... the pylons can be driven so deep into the earth's crust
that they are tapped into the earth's inner heat, the rails can be the
DC conduit Marcus suggests. There can be as many windmills and tidal
turbines placed along the line as one feels they
need/can-afford/stand-to-see as well as a PV/thermo solar continuous
collector/shade-roof which can also enhance gradient by radiating into
the (2.73-273 deg K
<https://physics.stackexchange.com/questions/153839/what-is-the-temperature-of-the-clear-night-sky-from-the-surface-of-earth>)
sky at night. The Snowpiercer rail-cars can move (make them pneumatic
or evacuated-ballistic (~18mi/sec?)) physical goods and materials
continuously... (thank you Elon Musk). Mount a few Spinlaunch
<https://www.spinlaunch.com/> units on train units and squirt things
into orbit at-will?
Wait, maybe it can become a strip-city modeled on SA's "Line"
<https://en.wikipedia.org/wiki/The_Line,_Saudi_Arabia>... at 100 miles
long and 9million population, the circumferential "line" would be 240
times as long and have a carrying capacity of >2 Billion based on their
predicted precedent. Place three of these orthogonal to one another
like an armillary sphere
<https://en.wikipedia.org/wiki/Armillary_sphere> and we are up to 6B?
A modest bump in scale (cube root of 1.5) could accommodate 9B! A few
of us (DaveW, GaryS, ... myself) rebellious non-urban renegades could
live in the remaining landscape NOT covered by these 3 circumscribing
strip cities and live our lives in the spirit of Sean Connery's
character Zed in Zardoz <https://www.imdb.com/title/tt0070948/>!
Heck, just a nice precursor to Larry Niven's Ringworld
<https://www.popularmechanics.com/space/deep-space/a11183/could-we-build-a-ringworld-17166651/>
tell Musk he can keep his claims to Mars... at least until the rest of
us need the mass to integrate into a proper Dyson Sphere
<https://www.popularmechanics.com/space/deep-space/a11098/dyson-sphere/>...
On Fri, Dec 16, 2022, 10:46 AM Gillian Densmore
<[email protected]> wrote:
frank: ah! thanks. It seems like you've had 99 lives man.
On Fri, Dec 16, 2022 at 12:28 AM Marcus Daniels
<[email protected]> wrote:
I like the idea of a large transatlantic DC power cable.
That would enable solar power to be distributed around the
world. It would reduce the need to depend on batteries for
wind and solar. Of course, you raise #3, so it would be a
target for sabotage like with Nordstream. It would be nice to
think there are things just to valuable to destroy, but
probably there are no such things.
------------------------------------------------------------------------
*From:* Friam <[email protected]> on behalf of
Sarbajit Roy <[email protected]>
*Sent:* Friday, December 16, 2022 12:01 AM
*To:* The Friday Morning Applied Complexity Coffee Group
<[email protected]>
*Subject:* Re: [FRIAM] technical notes on fusion announcement
What you are missing includes
1) Disposal of long term hazardous nuclear waste.
2) Problems in maintaining / decommissioning ol older nuclear
fission plants
3) Examples like we are seeing Ukraine's nuclear plants caught
up in a war.
On Fri, Dec 16, 2022 at 2:59 AM Gillian Densmore
<[email protected]> wrote:
Ok so this is cool and all.
Sigh I'll ask /that/ question. We want less carbons
because the planet is on f'n fire
<https://www.youtube.com/watch?v=IFgBFYkBZ6E> . As far as
I know humans (in the very least) accelerated climate
change. Ie we made this mess clean it up. ok fair so far
I'm following.
So uh why not just start with fission (breeders) ? Why not
also put as much money into matter/anti matter as well as
fusion? We can make minute amounts of antimatter in
massive collider. I'd think something who's by product are
xrays gamma and some other stuff with a lot of energy
created would be a massive honney pot the department of
energy would pursue as well.
I know the answer to fission (sadly) is NIMBY. (yes but
it's a lot cleaner and safer than oil and coal I say)
I don't know why we haven't looked at other things as well
What I'm saying is fusion has been humans icarus wings
with it being just arround the corner for decades. while
matter/anti matter is (sort of) here. Fission is here.
Want zero carbons? cool! so why not build out a ton of
reactors we already can do. Or am I missing something?
On Wed, Dec 14, 2022 at 8:31 AM Marcus Daniels
<[email protected]> wrote:
How ICF might evolve into a power plant:
https://firstlightfusion.com/technology/power-plant
Sent from my iPhone
On Dec 14, 2022, at 7:16 AM, glen
<[email protected]> wrote:
Excellent! Thanks. I think I'll have to push this
topic for another day. I've got a few more links from
other fora I'll plop here just in case I only land
back here if/when I pop it off the stack later:
https://lasers.llnl.gov/news/magnetized-targets-boost-nif-implosion-performance
https://spie.org/news/nuclear-fusion-nifs-hall-of-mirrors-may-solve-worlds-energy-crisis?SSO=1
https://www.science.org/content/article/fusion-power-may-run-fuel-even-gets-started
https://arstechnica.com/science/2022/12/what-enabled-the-big-boost-in-fusion-energy-announced-this-week/
On 12/13/22 16:23, Steve Smith wrote:
I think DT refers simply to the remaining fraction
of Deuterium/Tritium remaining after the reaction
event (-4%) without specific accounting for
remaining D vs T.
My understanding is that D-T fusion occurs at a
lower temperature than D-D but that once fusion
commences (starting with D-T), both D-T and D-D
reactions occurring in similar amounts. In
laser-driven ICF (as with NIF) I believe the ratio
of D/T is nominally 50/50 though it would seem to
make sense to have a higher T to D ratio but most
references I see imply equal portions. An equal
number of D-D and D-T reactions would seem to
consume D more quickly, though as that commences,
the D/T ratio would go down, making D-T reactions
(yet) more likely... tricky business, no wonder it
has taken decades to get to this point?
The Wikipedia Entry on ICF is pretty good:
https://en.wikipedia.org/wiki/Inertial_confinement_fusion
I found several popular science Articles which seem
to reinforce my sense that this "breakthrough" is
not as significant as implied:
https://www.science.org/content/article/fusion-breakthrough-nif-uh-not-really
Other interesting/relevant links regarding D-T and
D-D fusion...
https://www.researchgate.net/publication/263507001_Species_separation_and_modification_of_neutron_diagnostics_in_inertial-confinement_fusion/figures?lo=1
https://www.energy.gov/science/doe-explainsnuclear-fusion-reactions
<https://www.energy.gov/science/doe-explainsnuclear-fusion-reactions>
https://science.jrank.org/pages/4732/Nuclear-Fusion-D-D-D-T-reactions.html
<https://science.jrank.org/pages/4732/Nuclear-Fusion-D-D-D-T-reactions.html>
On 12/13/22 4:36 PM, glen wrote:
That's why I asked. I guess I'll assume DT means
both deuterium and tritium, not just deuterium. If
you were going to track fuel use, you'd track the
rarer part more closely, right?
On 12/13/22 09:22, Frank Wimberly wrote:
DT = deuterium?
---
Frank C. Wimberly
140 Calle Ojo Feliz,
Santa Fe, NM 87505
505 670-9918
Santa Fe, NM
On Tue, Dec 13, 2022, 10:21 AM glen
<[email protected]
<mailto:[email protected]>> wrote:
Awesome. Thanks. I'm still trying to catch up with
the QC Wormhole kerfuffle. Who knew Quanta was so
click baity?
What is "DT"?
On 12/13/22 09:02, Marcus Daniels wrote:
> In case no one wanted to get up at 7:00am to
watch DOE administrators talk:
>
>
> 1. Controlling the laser in space and time was
important for maintaining symmetry. Timing
precision of 25e-12 secs and laser spatial
precision of 5e-12 meter were needed. This was
thought to be the main explanation for the
achievement.
>
> 2. 8% more power on the laser this time
>
> 3. x-ray tomography is used to find flaws in the
capsules. Developing software to do the counting.
>
> 4. They have ongoing efforts to study the
fabrication systems and their components (done in
Germany) to find idiosyncrasies of each.
>
> 5. Laser technology improvements since NIF was
built which are 20% more efficient.
>
> 6. Target cost is from labor, and it takes 7
months each
>
> 7. 4% of DT is burned in a shot
>
> 8. Machine learning ties together radiation
hydrodynamics and experimental data. (It sounded
preliminary.)
>
> 9. The (successful) capsule had more defects
than previous experiments. However, previous
experiments did show benefits from capsule quality.
>
> 10. 15% of experiments are indirect drive of
this kind, 15% of experiments are other approaches
to ignition. The rest are weapons and materials
characterization.
>
> 11. Anomalous laser directional control were
problems in the summer runs. Fixed that.
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