Chapter 365: Pre-conditions are not met (Mon./Wed.)

However, Lu Zhou found himself thinking too much.
When he asked the system this question, the system did not give him a reply, not even a response. So much so that he can't help but doubt that the "integral function" of this broken system is broken?
Constantly tried various questions, and at the tenth attempt, the system finally gave a reluctant answer.
Although, it has only a short line of words.
[Preconditions are not met. 】
Looking at the text that appeared before him, Lu Zhou stopped questioning the system, but fell into meditation.
"The pre-conditions are not met ... Does this refer to the level or does the pre-tech required to unlock nuclear fusion fail to meet the requirements?"
Regarding this further part of the problem, the system said that he refused to give any hint and completely ignored him.
However, Lu Zhou did not feel any discouragement for the high cold of the system.
Because for him, he got enough hints ...
After the experiment, in the rest area of ​​the Spiral Stone 7-x laboratory, Professor Kleiber invited two people to have a cup of coffee.
Sitting on the sofa in the rest area, a Nobel prince, a quasi-Filtz scholar, and a senior engineer of controlled nuclear fusion engineering, three people were chatting and chatting about the spiral stone 7-x imitator. The problem of cooperating with iter.
The so-called iter project is the International Thermonuclear Fusion Experimental Reactor Program and one of their main sources of funding.
However, when it comes to his views on the iter project, Professor Kreiber's face did not have the optimistic expression in the laboratory as before, but there was deep worry.
"The prospects for controlled nuclear fusion projects are undoubtedly broad. No matter who asks me this question, I will answer him like this. But the iter project has not been optimistic until now, and the annual budget is exceeding the standard in billions. However, The results are not satisfactory, and governments including the United States have gradually lost patience. In order to make money for the Spiral 7-x, we have shut down the wega experimental group. "
Professor Klitzing drank his coffee and blocked the expression on his face with a cup.
Not crying, but laughing.
Although it is not good to know that he is happy, but seeing that this group of "local tyrants" is finally short of money, he still can't help secretly.
Sighing, Professor Kleiber continued.
"Controlled nuclear fusion is a systematic project. Whether it is inertial or magnetic constraints, or tokamak and stellar, only after a series of questions are answered can it finally be solved. But now, None of the problems we face are fundamentally resolved. "
Lu Zhou: "What problems do you think need to be solved?"
Professor Kreiber thought about it and said, "In terms of engineering alone, we need a larger electromagnetic field to complete the magnetic confinement of the plasma. However, this is not easy to solve. A large magnetic field means a large current. And the current will release heat when it passes through the conductor. We must soak the wire with liquid helium to reach the superconducting temperature on the one hand and prevent the wire from heating up on the other hand.
"It's not enough to have a magnetic field, we have to find a way to control the magnetic field ... Of course, fortunately, the advantages of the design concept of the star-like device eliminate the need for us to start it through an ohmic transformer like the Tokemark device Plasma current does not need to consider twisted films, magnetic surface tearing, resistance wall films, etc., which is equivalent to transferring the technical difficulty to engineering difficulty. "
Having said that, Professor Kreiber smiled helplessly and said in a joke tone.
"In fact, after talking about so many engineering problems, in the final analysis, we still have to return to the materials."
"If there is a material that can achieve superconductivity at room temperature, or at least in less extreme conditions, we can create a larger artificial electromagnetic field to constrain the plasma, and many problems will become fundamental. not a problem."
Superconducting materials are necessary.
Lu Zhou roughly made a summary, and at the same time he wrote this sentence on a notebook he took with him.
"If you want to solve a difficult problem, you have to solve more difficult problems first, does that mean that?" Professor Klitzing, who has been drinking coffee, smiled and inserted a sentence, "I think if room temperature superconducting materials really exist, Let alone a controlled nuclear fusion project. Even without controlled nuclear fusion, many energy problems can be solved. "
"So this is just a hypothesis," Professor Kreiber shrugged, helplessly, "If we can't solve it from the perspective of materials science, we must improve the coil design and increase the strength of the artificial electromagnetic field from the perspective of engineering. In addition, In addition to the application difficulties, we are basically unable to do anything in the theoretical field. "
Lu Zhou asked, "Does controlled nuclear fusion need to involve complex theoretical issues?"
"There is a famous saying in physics," more-is-different, "Professor Klitzing smiled, and answered the question for his old friend Professor Kreiber." Although the motion of plasma uses Maxwell's equations The group can be summarized, and even quantum mechanics is not used, but the number of particles in the entire system is an astronomical number. You should be able to appreciate the difficulties involved. "
Lu Zhou nodded, indicating understanding.
When he was studying the theory of electrochemical interface structure, the variables involved were almost equivalent to three times the number of particles in the system. Faced with the theoretical model he designed, even anton had to think for a while before giving the answer.
However, ionospheric motion in a stellar is a more complex system than the electrochemical interface structure.
Just like fluid mechanics, although we know that the basic equation is the Navier-Stokes equation, the turbulence phenomenon it produces is a mountain that cannot be attacked by the physics community for two hundred years.
Turbulence is not a patent for general fluids. Plasma also produces turbulence. And because of the existence of an external magnetic field, the turbulence of the plasma will be more complicated and more difficult to predict than the turbulence of ordinary fluids.
Since it is impossible to explain theoretically, there is no way to start from the "first-principles" and find a concise model to predict plasma behavior.
So many times, when researchers "diagnose" the plasma, they can only build some phenomenological models to help the research like when studying fluid turbulence.
Seeing that Lu Zhou was so interested, Professor Kreiber couldn't help sending out an invitation.
"If you are interested in a fusion project, why not join the iter project? We very much welcome a mathematician to participate in our cause."
For the olive branch thrown by Professor Kreiber, Lu Zhou gave a reply after thinking about it for a moment.
"Sorry I can't accept your invitation ~ EbookFREE.me ~ I will have to return to Princeton after a while, and starting next month, I have to prepare for next year's conference of mathematicians."
Closing the notebook in his hand, he smiled a little embarrassedly and continued.
"However, I will write them down and study them as a hobby. Although there is no guarantee that something will be researched, maybe it will come in handy someday."
Although rejected, Professor Kreiber was not discouraged, he just said with a smile.
"Really? Then I can only look forward to your new achievements."
Although when he said this, he didn't have the look of expectation on his face, and even regarded Lu Zhou's words as a joke.
Because it is clear that no matter which of the previously mentioned problems is not what can be studied as a hobby research.
Having worked in this institute for so many years, no one knows more about how difficult it is than Professor Kreiber ...