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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Heating for fusion, Why toast plasma when you can microwave it?
Date: Sat, 10 Aug 2024 06:01:32 GMT
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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.