However, Lu Zhou found that he was thinking too much.

When he asked the system about the problem, the system did not give him a reply, and even did not even respond. So that he could not help but wonder, is this broken system's "integration function" broken?

Constantly trying various methods, at the tenth attempt, the system finally gave a reluctant reply.

Although, it only has a short line of words.

[The preconditions are not met. 】

Looking at the words that appeared in front of me, Lu Zhou stopped asking questions about the system, but fell into meditation.

“The preconditions are not met... Does this mean the level, or is the front-end technology needed to unlock the nuclear fusion not meet the requirements?”

For this part of the problem, the system is saying that it is not willing to give a hint, completely ignore him.

However, Lu Zhou did not feel any dismay for the high cold of the system.

Because for him, the tips are enough...

After the experiment, Professor Kreb invited two people to have a cup of coffee in the rest area of ​​the spiral stone 7-x laboratory.

Sitting on the sofa in the lounge area, a Nobel Prize, a quasi-Feltz scholar, and a senior engineer in a controlled nuclear fusion project, three people are chatting and talking about the spiral stone 7-x. The problem of working with the iter project.

The so-called iter project is the international thermonuclear fusion reactor program and one of their main sources of funding.

However, when talking about the iter project, Professor Kreb's face did not have the optimistic expression in the laboratory, but there was deep concern.

"The prospect of a controlled nuclear fusion project is undoubtedly vast. Anyone who asks me this question will answer this question. But the iter project is not optimistic now, and the annual budget is over 100 million. The results are not gratifying, and governments including the United States have gradually lost their patience. In order to make money for the spiral stone 7-x, we have shut down the wega experimental group."

Professor Klein bowed his head and sipped coffee, blocking the expression on his face with a cup.

Not crying, but laughing.

Although it is not good to know that gloating is a disaster, but the "local tyrants" who saw this group of money are finally short of money, his heart can not help but dark.

Sighed, Professor Kreb continued.

“Controllable nuclear fusion is a systematic project, whether it is inertial or magnetic constraints, or tokamaks and imitations. Only when a series of questions are answered can it be finally solved. But now, None of the problems we have faced have been fundamentally resolved."

Lu Zhou: "What problems do you think need to be solved?"

Professor Kreb thought and said: "In terms of engineering, we need a larger electromagnetic field to complete the magnetic confinement of the plasma. However, this is not a good solution. A large magnetic field means a large current. And the current will release heat when passing through the conductor. We must soak the wire with liquid helium, on the one hand to reach the superconducting temperature, on the one hand to prevent the current from heating up the wire."

"It's not enough to have a magnetic field. We have to find a way to control the magnetic field... Of course, fortunately, the advantage of the design of the singularity device makes us do not need to start with an ohmic transformer like the Tokmak device. The plasma current does not need to consider the distortion film, the magnetic surface tear, the resistance wall film, etc., which is equivalent to transferring the technical difficulty to the engineering difficulty."

Speaking of this, Professor Kreb smiled helplessly and said in a joking tone.

"In fact, when I talked about so many engineering problems, I still have to return to the material."

“If there is a material that can achieve superconductivity at room temperature, or at least under less extreme conditions, we can create larger artificial electromagnetic fields to constrain the plasma, and many problems will become fundamental. not a problem."

Superconducting materials are required.

Lu Zhou made a general summary, and at the same time wrote this sentence on the notebook that he carried with him.

"If you want to solve a difficult problem, you have to solve more difficult problems first. Is this what it means?" Professor Cui Qing, who has been drinking coffee, smiled and inserted a sentence. "I think if there is a normal temperature superconducting material. Not to mention the controllable nuclear fusion project, even if there is no controllable nuclear fusion, many energy problems can be solved."

“So this is just a hypothesis,” Professor Krebs shrugged, reluctantly. “If we can't solve it from the perspective of materials science, we have to improve the coil design and increase the strength of the artificial electromagnetic field from an engineering point of view. In addition to the application problems, we are basically unable to do anything in the theoretical field."

Lu Zhou asked: "Do you need to involve complex theoretical problems with controlled nuclear fusion?"

“There is a famous saying in physics, more-is-different,” Professor Klein smiled and answered this question to his old friend Professor Kreiber. “Although the motion of the plasma uses Maxwell's equations. The group can be generalized, even quantum mechanics can't be used, but the number of particles in the whole system is an astronomical number. You should be able to understand the difficulties."

Lu Zhou nodded and expressed understanding.

When he studied the theory of electrochemical interface structure, the variables involved were almost three times the number of particles in the system. In the face of the theoretical model he designed, even anton has to think for a while to give an answer.

However, the movement of ions in a pseudo-star 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 the physics world can't attack for two hundred years.

The turbulence phenomenon is not a patent for general fluids, and the plasma also produces turbulence. Moreover, because of the existence of an external magnetic field, the turbulent flow of the plasma is more complicated and more difficult to predict than the turbulence of the general fluid.

Since it is impossible to explain it theoretically, there is no way to find a simple model to predict plasma behavior from the "first principles".

So many times, when researchers "diagnose" plasma, they can only construct some phenomenological models to help research when studying fluid turbulence.

Seeing Lu Zhou so interested, Professor Kreb couldn’t help but send out an invitation.

“If you are interested in nuclear fusion projects, why not join the iter project? We welcome a mathematician who can participate in our business.”

For the olive branch thrown by Professor Kreb, Lu Zhou gave a reply after a moment of thinking.

"Unfortunately I can't accept your invitation. I have to go back to Princeton some time later, and from next month, I have to prepare for next year's mathematician conference."

Closing the notebook in his hand, he smiled a little embarrassed and continued.

"However, I will write down these questions and study them as a hobby. Although there is no guarantee that something will be developed, maybe it will come in handy."

Although refused, Professor Kreb was not discouraged, just said with a smile.

"Yes? Then I can only look forward to your new results."

Although he did not expect the expression on his face when he said this, he even used the words of Lu Zhou as a joke.

Because it is obvious that no matter what kind of problem mentioned earlier, it is not what can be studied as a hobby study.

I have been working in this institute for so many years, no one knows more about how difficult it is than Professor Krebberg...