Re: Heating for fusion, Why toast plasma when you can microwave it?

On a sunny day (Fri, 09 Aug 2024 08:56:44 -0700) it happened John Larkin
<jjlarkin@highlandtechnology.com> wrote in
<esecbj1vp6cf0v0778gt00kut08div9dsm@4ax.com>:

On Fri, 09 Aug 2024 06:38:37 GMT, Jan Panteltje <alien@comet.invalid>
wrote:
>

On a sunny day (Fri, 9 Aug 2024 02:18:17 +1000) it happened Bill Sloman
<bill.sloman@ieee.org> wrote in <v92r4h$3fk7$1@dont-email.me>:
>

On 8/08/2024 8:23 pm, Jan Panteltje wrote:

On a sunny day (Thu, 8 Aug 2024 17:13:36 +1000) it happened Bill Sloman
<bill.sloman@ieee.org> wrote in <v91r78$3pjer$3@dont-email.me>:
 

On 7/08/2024 3:27 pm, Jan Panteltje wrote:

Heating for fusion: Why toast plasma when you can microwave it!
   https://www.sciencedaily.com/releases/2024/08/240806131216.htm
    Carving a new path forward for compact fusion vessels
Date:
   August 6, 2024
Source:
   DOE/Princeton Plasma Physics Laboratory
Summary:
   Can plasma be sufficiently heated inside a tokamak using only microwaves?
   New research suggests it can! Eliminating the central ohmic heating coil
   normally used in tokamaks will free up much-needed space for a more compact,
   efficient spherical tokamak.

>
Not so much carving a new path as looking for one. Maybe be gyrotrons
can heat the plasma enough, but planing to do experiment which can test
whether they can isn't exactly carving a new path - more just looking at
a possible new path.
>

Bye bye ITER and that otehr fusion attempt mayonaise thing
   https://www.sciencedaily.com/releases/2024/08/240806131357.htm
    Researchers dig deeper into stability challenges of nuclear fusion -- with mayonnaise
>
Now all I am waiting for is a 10 year old kid doing a better than break even fusion experiment in its parents kitchen...

>
You may have to wait a long time. Mayonaise may exhibit Rayleigh-Taylor
instability, but the lessons it might be able to impart would be
difficult to translate into totomak design.

 
I like that Farnsworth fusor thing

>
Of course you do. You are too dim to notice that it can't generate
enough energy to be a useful energy source - though it can be a handy
source of neutrons if you need them.
>
This spelled out if the link you posted, but clearly didn't read.
>

They mention the grid gets too hot as a problem.
Why not use a water filled pipe as grid,
heat the water to steam, drive a small steam engine
that drives a generator that drives a HV converter,
simple electronics, there is a table top experiment.
  https://en.wikipedia.org/wiki/Fusor
   so many simple ways to improve that setup!

>
But none are going to make it an energy source.

>
Yea, and planes could never fly as those were heavier than air.
There are solutions, some are simple.
I have been posting about that Farnsworth fusor many times, but your amnesia must have gotten to you again.
>
What will never produce energy is the large political job creation projects for albert onestone parrots like ITER is.
Or that laser fusion crap in 'merrica.

>
NIF is really about nuclear weapons, but the over-unity energy yield
is interesting.

Yes, but theequipment ises a zillio times more energy that is produced...

>
Same for anti-gravity.
>
This is fun info too, previous thing you did not graps:
Carvings at ancient monument may be world's oldest calendars
 https://www.sciencedaily.com/releases/2024/08/240806131238.htm
 comets causing glowball cooling?
>
As to solder, when was the last time your front limbs held a sodering iron?

>
Good question!

Yea, had not touched it in several days myself .. was repairing a watch...
need better tools, but it works again..
We are in for some nice hot days here, 35 degrees C here predicted for Monday.
95 F?

As to that fusor, some old electron guns from color CRTs.. good focal point, 35 kV should be no problem
need a good lab and mechanical man.
Maybe some electron guns from old film scanner CRTs, those used even higher voltages.
electrons; more basic and simpler than light.
Farnsworth was a genius.