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Old 07-08-2021, 11:44 AM
gary
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ITER Talks: Introduction to the ITER nuclear fusion research project (video)

In this 23 July 2021 53 minute video, Laban Coblentz provides an introduction
to the ITER Tokamak, a joint multi-billion dollar nuclear fusion research
project being undertaken by 35 nations in France.

Full of gee-whizz data such as an explanation of why it is sized as it is
(in order to achieve a ten times ratio of output thermal power to input thermal power -
a ratio known as 'Q') and the fact that this 830 cubic metre vessels only uses 2 to 3 grams of
hydrogen-deuterium fuel.

https://youtu.be/kDaTQSmsJC8

Last edited by gary; 07-08-2021 at 11:55 AM.
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Old 20-08-2021, 01:28 AM
colour-coded (Alex)
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Very interesting project and great presentation by Laban.
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Old 20-08-2021, 04:22 AM
glend (Glen)
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You may find the article on the National Ignition Facility experiment interesting as well:


https://www.sciencemag.org/news/2021...nears-ignition
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Old 20-08-2021, 08:09 AM
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We should have answers within the decade. Exciting times. First thing we need to do is scrub all that CO2 back with a true unlimited green source of energy.
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Old 20-08-2021, 08:01 PM
colour-coded (Alex)
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What is surprising to me is the level of cooperation between countries. So unlike to the current state of affairs. China and India, Russia and the rest. Unlike in Space, where are everybody started to pull their blankets. I was browsing through various RAN's websites ( Russian Academy of Science) and in general, it's a good impression, very positive vibe towards the project.
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Old 20-08-2021, 09:06 PM
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Quote:
Originally Posted by colour-coded View Post
What is surprising to me is the level of cooperation between countries. So unlike to the current state of affairs. China and India, Russia and the rest. Unlike in Space, where are everybody started to pull their blankets. I was browsing through various RAN's websites ( Russian Academy of Science) and in general, it's a good impression, very positive vibe towards the project.
Energy control is strategic. Nobody wants to be left out in the dark.
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Old 20-08-2021, 09:11 PM
colour-coded (Alex)
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Energy control is strategic. Nobody wants to be left out in the dark.
Plus it's too expensive and no one is able to pull it on its own, I guess.
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Old 20-08-2021, 09:16 PM
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Plus it's too expensive and no one is able to pull it on its own, I guess.
Absolutely. The cost is massive.
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Old 20-08-2021, 09:32 PM
colour-coded (Alex)
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Apparently, Australia has also got invited to build a measuring system, https://iter.anu.edu.au/
I hope they will find the required $30 m to develop this tech. Such a great opportunity.
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Old 21-08-2021, 08:14 AM
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All that money on this project and they use the worst green screen technology and video production ever. That was like watching a video from the year 2000
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Old 21-08-2021, 11:40 PM
colour-coded (Alex)
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All that money on this project and they use the worst green screen technology and video production ever. That was like watching a video from the year 2000
Ever? /s
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Old 23-08-2021, 05:38 PM
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Ever? /s
ever
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Old 24-08-2021, 12:09 PM
colour-coded (Alex)
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Originally Posted by glend View Post
You may find the article on the National Ignition Facility experiment interesting as well:


https://www.sciencemag.org/news/2021...nears-ignition
Anton made a video about it today - https://youtu.be/5M5U2_9eEgM
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Old 02-09-2021, 11:18 AM
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31 Aug 2021 "Celebration for the completion of the first ITER central solenoid module".

The central solenoid initiates and stabilises ITER's plasma.
It forms the heart of ITER's magnetic confinement.

Weighing 1000 tonnes and 5 storeys high, 15 million amperes pass
through it to generate 13 Tesla, about 208,000 times stronger than the
Earth's own magnetic field.

Video 1h3m :-
https://youtu.be/opZPJKZ0rk0
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Old 04-10-2021, 01:21 AM
colour-coded (Alex)
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Here we go - How close is nuclear fusion power?
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Old 05-10-2021, 04:00 PM
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Mmmm at times I think the quest is no better than the guy Flash posted about today in general chat claiming "free" electricity.
What I find curious is why it is a few light elements that give off energy and yet with heavier elements energy is required..could they be wrong about light elements giving off energy in fusion? Why the difference?
alex
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Old 05-10-2021, 08:22 PM
Lariliss (Larissa)
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1. The difference between light and heavy elements depends on a particular element.
When two light nuclei are fused together to produce a heavier nucleus, the mass difference is converted into energy.
The issue of fusing Hydrogen into Helium releases a large amount of energy. Fusing heavier elements releases less energy.
Nuclei of heavier elements require additional energy to fuse and fusion reactions require energy rather than produce it.
Heavy elements produce more energy through fission.
Fusion produces more energy if it involves light elements and fission produces more energy if it involves heavy elements.

At the same time the preference is given to reactions that are safe from a control point of view

https://www.energy.gov/ne/articles/f...hat-difference

2. I also want to agree to be fascinated by the degree of cooperation between countries within technological tasks, unprecedented before in history.
It benefits with the speed of solutions, discoveries and technology evolution. These kinds of huge projects need a lot of experts, specialists, and tests to be involved. Hiding information and trying to make it alone would sound like a waste of time, resources and failure.
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Old 06-10-2021, 04:55 AM
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Quote:
Originally Posted by Lariliss View Post
1. The difference between light and heavy elements depends on a particular element.
When two light nuclei are fused together to produce a heavier nucleus, the mass difference is converted into energy.
The issue of fusing Hydrogen into Helium releases a large amount of energy. Fusing heavier elements releases less energy.
Nuclei of heavier elements require additional energy to fuse and fusion reactions require energy rather than produce it.
Heavy elements produce more energy through fission.
Fusion produces more energy if it involves light elements and fission produces more energy if it involves heavy elements.

At the same time the preference is given to reactions that are safe from a control point of view

https://www.energy.gov/ne/articles/f...hat-difference

2. I also want to agree to be fascinated by the degree of cooperation between countries within technological tasks, unprecedented before in history.
It benefits with the speed of solutions, discoveries and technology evolution. These kinds of huge projects need a lot of experts, specialists, and tests to be involved. Hiding information and trying to make it alone would sound like a waste of time, resources and failure.
Thank you for taking your time to explain things so clearly.
However the question remains in my mind as to why it is that light elements give energy and are the exception to the majority of elements, those being the heavier ones, who require energy ...I understand it comes down to extra mass after the event and I expect that E=MC2 is used to arrive at the "extra" energy...further could there be a mistaken interpretation of the light element observation here such that the "spare" mass does not convert to energy.
Perhaps you know of experiments that conclusively establish the matter.
I have little knowledge in these areas and realise my question probably would not be asked if I had a reasonable knowledge of the subject but given that I am in the presence of someone who has what would seem a decent grasp of the subject I am driven to ask.
Alex
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Old 06-10-2021, 10:50 PM
Lariliss (Larissa)
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Thank you, Alex.
Quote:
Originally Posted by xelasnave View Post
I understand it comes down to extra mass after the event and I expect that E=MC2 is used to arrive at the "extra" energy...further could there be a mistaken interpretation of the light element observation here such that the "spare" mass does not convert to energy.
Alex
This is quite true.

For practical part I might add this:
1. One reason is that the controlled chain reaction during fission is capable of giving energy from U233, U235 (occurs naturally), Pu239, Pu241.
If there is no chain reaction during fission, it would be necessary to provide a thermal neutron for each nuclear reaction "manually".
2. Fission gives much more energy than one reaction of fusion, but the fusion is more efficient per kilogramme of matter.
3. Weizsäckers formula about binding energies in nuclei may help understanding the calculations.

And a reference:
https://www.researchgate.net/post/Wh...ements-are-not
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Old 07-10-2021, 03:23 AM
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Quote:
Originally Posted by Lariliss View Post
Thank you, Alex.

This is quite true.

For practical part I might add this:
1. One reason is that the controlled chain reaction during fission is capable of giving energy from U233, U235 (occurs naturally), Pu239, Pu241.
If there is no chain reaction during fission, it would be necessary to provide a thermal neutron for each nuclear reaction "manually".
2. Fission gives much more energy than one reaction of fusion, but the fusion is more efficient per kilogramme of matter.
3. Weizsäckers formula about binding energies in nuclei may help understanding the calculations.

And a reference:
https://www.researchgate.net/post/Wh...ements-are-not

Thank you for helping me understand. In truth this stuff is somewhat beyond me because unfortunately my education in math is minimal, however I dont give up working on the basis of I learn a little more about things each time I read material...I dont give up in frustration

I will enjoy following up on this subject.
Alex
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