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From: john larkin <jl@650pot.com>
Newsgroups: sci.electronics.design
Subject: Re: China reveals fusion tech breakthrough
Date: Sun, 23 Jun 2024 14:24:49 -0700
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On Sun, 23 Jun 2024 19:40:53 -0000 (UTC), Cursitor Doom
<cd999666@notformail.com> wrote:

>On Sun, 23 Jun 2024 10:28:33 -0700, john larkin wrote:
>
>> On Sun, 23 Jun 2024 17:04:27 -0000 (UTC), Cursitor Doom
>> <cd999666@notformail.com> wrote:
>> 
>>>On Sun, 23 Jun 2024 09:34:06 -0700, john larkin wrote:
>>>
>>>> On Sun, 23 Jun 2024 17:04:08 +0200, Jeroen Belleman
>>>> <jeroen@nospam.please> wrote:
>>>> 
>>>>>On 6/23/24 07:20, Jan Panteltje wrote:
>>>>>> China reveals fusion tech breakthrough:
>>>>>>   https://www.rt.com/news/599707-china-fusion-tech-tokamak-plasma/
>>>>>>    A commercial ?artificial sun? has achieved its first plasma
>>>>>>    discharge,
>>>>>>    the developer says
>>>>>> If you have trouble accessing the link because of censorship by your
>>>>>> polly-tick-sisons revolt!
>>>>>> 
>>>>>> <partial quote from article>
>>>>>>   According to the developers, as cited by Chinese media,
>>>>>>   the HH70 tokamak is smaller and cheaper to assemble than its
>>>>>>   predecessors.
>>>>>>   The device uses a magnetic system made from high-temperature
>>>>>>   superconducting material,
>>>>>>   commonly known as REBCO (Rare Earth Barium Copper Oxide).
>>>>>> 
>>>>>>   It can reportedly be manufactured on a large scale,
>>>>>>   reducing the cost of Energy Singularity?s tokamaks.
>>>>>>   Moreover, the HH70 device, according to the company,
>>>>>>   is only 2% the size of conventional tokamaks  ? providing a major
>>>>>>   advantage in the race to produce a commercially viable device.
>>>>>> <end quote>
>>>>>> 
>>>>>> Well that's it for ITER then!
>>>>>> 
>>>>>> 
>>>>>A plasma discharge is a breakthrough? I can do that in my microwave
>>>>>oven.
>>>>>
>>>>>Jeroen Belleman
>>>> 
>>>> Stick an NE-2 neon bulb in the microwave!
>>>Grapes are cheaper and work just as well for this kind of demo.
>> 
>> The neon indicates faster. I wanted to see how fast the magnetron turns
>> on.
>
>And how fast did it turn on? They don't use actual cavity magnetrons, do 
>they?

It flashed and exploded in about 1 second. Yes, they use a magnetron,
apparently with a very fast-warmup cathode.