[Lex Computer & Tech Group/LCTG] Nuclear fusion...

[Michael Alexander]

Mitch - Good for the WSJ, giving perspective beyond the hype.  Same for Physics Today (less surprising, given its audience).
Question:  How did LLNL measure (quantitatively) the fusion output energy?  I may have missed a description.
    – Mike Alexander



On Sunday, December 18, 2022, 9:19 AM, Mitchell I. Wolfe <mwolfe at vinebrook.com> wrote:


The WSJ had a recent article about this. They differentiated between the scientific break-even (achieved), the engineering break-even (not even close), and the economic break-even.

-- Mitch

On 2022-12-13 18:45, Ted Kochanski wrote:

George  Yes -- the pump energy was between 300 and 400 MJ Ted
On Tue, Dec 13, 2022 at 5:49 PM George Gamota <ggamota at stma-llc.com> wrote:

They omitted to include the energy used to pump the lasers, which in magnitude was much larger than the output.

 

From: LCTG <lctg-bounces+ggamota=stma-llc.com at lists.toku.us> On Behalf Of carllazarus at comcast.net
Sent: Tuesday, December 13, 2022 4:02 PM
To: 'Ted Kochanski' <tedpkphd at gmail.com>; 'Drew King' <dking65 at kingconsulting.us>
Cc: 'Lex Computer Group' <lctg at lists.toku.us>
Subject: Re: [Lex Computer & Tech Group/LCTG] Nuclear fusion...

 

I read that "The LLNL said a team at its National Ignition Facility (NIF) conducted the first controlled fusion experiment in history on December 5, achieving what is known as "scientific energy breakeven.""

What is counted in "scientific energy" and what does it omit?

 

-- Carl

 

From: LCTG <lctg-bounces+carllazarus=comcast.net at lists.toku.us> On Behalf Of Ted Kochanski
Sent: Monday, December 12, 2022 7:32 PM
To: Drew King (dking65 at kingconsulting.us) <dking65 at kingconsulting.us>
Cc: Lex Computer Group <lctg at lists.toku.us>
Subject: Re: [Lex Computer & Tech Group/LCTG] Nuclear fusion...

 

All,

 

Be careful about Hype versus simple reality

 

Yes it does appear that LLNL National Ignition Facility may have hammered a poor defenseless target pellet into producing more fusion energy than was absorbed by the pellet

so technically Q>1 [about 1.2]

 

BUT -- and I'll admit a bias toward Magnetic Confinement Fusion -- the Energy used to produce the Energy delivered to the pellet was not part of the calculation

 

While Magnetic Fusion with Superconducting Magnets in a Tokamak configuration probably need Q>2 to be a credible Eureka Moment -- The energy needed to fire the lasers probably needs a Q>30

 

Ted

 

 

On Mon, Dec 12, 2022 at 5:30 PM Drew King (dking65 at kingconsulting.us) <dking65 at kingconsulting.us> wrote:


All,

The Verge: A "scientific breakthrough" in nuclear fusion? How to watch the announcement tomorrow.
https://www.theverge.com/2022/12/12/23505416/nuclear-fusion-scientific-breakthrough-how-to-watch-announcement-biden

-- 
Drew King

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