Jasmine, excellent presentation. I have two questions. (1) why is that globe behind you black? (2) was there no ICF news this week? In the previous Fusion News, Cyd (Dr. Cowley) linked to an article, by Mordecai Rosen, titled "The long road to ignition." The article (27 pages) was surprisingly entertaining and informative. It explains that volumetric fusion yield is proportional to density squared, according to the formula: Yield = Volume * Time * * Density^2. However, this is generally not true because a target's Density, Mass, and Volume are not independent variables. For example, there is a problem in thinking that a target's density can change while its volume is held constant. We need to remember that a target's mass is fixed and cannot change to compensate. Because a target's mass is fixed, a better, more useful model, treats the fuel as a uniform (but variable radius) sphere of plasma with a specific (constant) mass. Under that model, the yield would be proportional to (mass/radius)^2. In that model, it would take 10x the energy to heat 10x the fuel to the same . If during that 10x heating the radius was also increased 10x then the yield should remain unchanged, since (mass/radius)^2 = ((10*mass)/(10*radius))^2. However, the larger target is more robust, easier (requiring less precision) to manufacture, experiences less instabilities, and would have better energy confinement time due to its surface-area to volume ratio.
4:03 The French company Thales is not to be pronounced in the English way, it is to be pronounced in the French language way: TALESS ( The H is silent )
Please 🙏🏻! USE A TIE MIC, to suppress the room sound ambience, it is very annoying and makes your voice very uncomfortable to listen too. As another comment said, use normalization on your audio recording to optimize it.
I don’t believe Tokamak Energy’s reactor will ever be built. How will they know how much tritium will be needed in the start up period before tritium breeding comes on stream? How will they know whether the breeding ratio will be sufficient, and how will they know whether the predicted DT power will be achieved? These things surely need to be known with complete certainty before spending Billions of Pounds/Euros/Dollars building the machine.
You ask, how do they know about this, that, and the other thing? Scientists conduct experiments and the accuracy of their software simulations increases every day. We do not need complete and certain knowledge before we begin the journey. Quoting JFK, "[w]e set sail on this new sea because there is new knowledge to be gained... not because it is easy, but because it is hard." :-)
That's not the problem, it's already been achieved. The real problem is to get more energy from the fusion reactions than that necessary to confine and heat the plasma. On the other hand, although the temperature is greater than that in the centre of the Sun, the density is far smaller.
But, “One can’t believe impossible things,” Aice said to the White Queen. The Queen observed that Alice simply lacked discipline and practice, boasting that she sometimes believed “as many as six impossible things before breakfast.”
@@jjeherrera So what power are we talking about, a few watts or hundreds of megawatts? That wee crucible generating high pressure steam to drive steam turbines to drive electrical generators. Think about those giant old railway steam engines and mutiply it by a thousand heated from the little fire at the centre called a fusion reactor. Really?. Is it possible?
3:04 It would be important to know how much power from the grid is necessary to produce those 1.3 MW of radiowave power.
Thanks for the update Jasmine!
Jasmine, excellent presentation. I have two questions.
(1) why is that globe behind you black?
(2) was there no ICF news this week?
In the previous Fusion News, Cyd (Dr. Cowley) linked to an article, by Mordecai Rosen, titled "The long road to ignition." The article (27 pages) was surprisingly entertaining and informative. It explains that volumetric fusion yield is proportional to density squared, according to the formula: Yield = Volume * Time * * Density^2. However, this is generally not true because a target's Density, Mass, and Volume are not independent variables. For example, there is a problem in thinking that a target's density can change while its volume is held constant. We need to remember that a target's mass is fixed and cannot change to compensate.
Because a target's mass is fixed, a better, more useful model, treats the fuel as a uniform (but variable radius) sphere of plasma with a specific (constant) mass. Under that model, the yield would be proportional to (mass/radius)^2.
In that model, it would take 10x the energy to heat 10x the fuel to the same . If during that 10x heating the radius was also increased 10x then the yield should remain unchanged, since (mass/radius)^2 = ((10*mass)/(10*radius))^2. However, the larger target is more robust, easier (requiring less precision) to manufacture, experiences less instabilities, and would have better energy confinement time due to its surface-area to volume ratio.
Thanks, but please use an external good microphone to enhance the experience.
4:03 The French company Thales is not to be pronounced in the English way, it is to be pronounced in the French language way: TALESS ( The H is silent )
Please 🙏🏻! USE A TIE MIC, to suppress the room sound ambience, it is very annoying and makes your voice very uncomfortable to listen too. As another comment said, use normalization on your audio recording to optimize it.
I don’t believe Tokamak Energy’s reactor will ever be built. How will they know how much tritium will be needed in the start up period before tritium breeding comes on stream? How will they know whether the breeding ratio will be sufficient, and how will they know whether the predicted DT power will be achieved? These things surely need to be known with complete certainty before spending Billions of Pounds/Euros/Dollars building the machine.
You ask, how do they know about this, that, and the other thing? Scientists conduct experiments and the accuracy of their software simulations increases every day. We do not need complete and certain knowledge before we begin the journey. Quoting JFK, "[w]e set sail on this new sea because there is new knowledge to be gained... not because it is easy, but because it is hard." :-)
👍
Please fix your audio and use proper audio normalization techniques.
I'm sorry,Please let go 🙏😭
*Fusion NOW*
Thotty like a torque wrench-got me all twisted.
A small crucible containing plasma 100 times hotter than the centre of the sun seems to me impossible to be honest.
That's not the problem, it's already been achieved. The real problem is to get more energy from the fusion reactions than that necessary to confine and heat the plasma. On the other hand, although the temperature is greater than that in the centre of the Sun, the density is far smaller.
But, “One can’t believe impossible things,” Aice said to the White Queen. The Queen observed that Alice simply lacked discipline and practice, boasting that she sometimes believed “as many as six impossible things before breakfast.”
@@jjeherrera
So what power are we talking about, a few watts or hundreds of megawatts?
That wee crucible generating high pressure steam to drive steam turbines to drive electrical generators.
Think about those giant old railway steam engines and mutiply it by a thousand heated from the little fire at the centre called a fusion reactor.
Really?. Is it possible?
@@michaeldeeth811
Good one!
Those headlines are rubbish. Someone set a record, someone gave some details, government gave some money generally, bleh