Chapter 340: Debate with Scholars

"Some time ago, Academician Deng and I went to EAST in Luzhou to conduct some experiments. Through the experiments, we found that there is a new substance that can generate a strong magnetic field in the plasma state, which can be used to achieve magnetic confinement of a controlled nuclear fusion device."

While talking about his achievements in recent times, Xu You projected his prepared PPT onto the large screen in front of him.

"The geometric model of the magnet in the traditional high-temperature superconducting tokamak device mainly includes the central solenoid coil and its compensation coil, as well as the poloidal field coil, etc. This is the geometric model I constructed using a two-dimensional axisymmetric model. With this new solution, the external magnetic field can be discarded, greatly reducing the size of the entire device."

Xu You’s design plan is very novel, and the entire design concept is different from all previous controlled nuclear fusion devices.

As Xu You continued to explain, the nuclear experts present became more and more supportive of this plan.

Although Xu You's plan is different from several traditional plans, it has sufficient theoretical basis to support it.

The advantages of this solution are completely lacking in several traditional solutions.

Regarding some of the questions that existed, everyone actively asked Xu You for advice.

"Professor Xu, how did you build such an optimization model?"

The person who raised this question is a nuclear physics expert from Huazhong University of Science and Technology.

This expert provided many theoretical results for the EAST project, and made even greater contributions than Deng Fu in the application of nuclear physics.

"I performed programming optimization by establishing a new algorithm. I established a two-dimensional axisymmetric magnetic field finite element model, calculated the magnetic field distribution in it, and then transferred the magnetic field data to the model, and imposed nonlinear constraints on the parameters to be optimized."

While explaining his ideas, Xu You wrote down his analysis process of the objective function.

"Here are the magnitude and direction of the magnetic field generated by the plasma at different temperatures. By controlling the direction of the plasma flow, we can make the magnetic field generated by the plasma perfectly magnetically confine it."

Based on the properties of this plasma designed a most suitable device diagram.

This new device perfectly meets all the conditions and can maximize the efficiency of nuclear reactions.

"Through simulation, the Q value of the new device is greater than 1, and the specific upper limit has not yet been accurately determined. But at least, this will be a controllable nuclear fusion device that achieves energy balance."

The Q value in controlled nuclear fusion is the energy output-input ratio in the controlled nuclear fusion process.

If the Q value is less than 1, it means that during the entire nuclear fusion reaction process, the output energy is less than the input energy.

Such a device is simply incapable of generating electricity.

Only when the Q value is greater than 1 is it possible to generate electricity using controlled nuclear fusion.

Of course, if you want to achieve true commercialization, the Q value should be greater than 10.

At this time, Qiao Sen thought of another question and raised his hand and asked:

"Professor Xu, the new device also does away with the superconducting protection part, right?"

Qiao Sen did not refrain from asking questions because of his special relationship with Xu You.

Xu You was also very satisfied with Qiao Sen's question and quickly answered:

"Yes, the magnetic confinement method used by this new device is very special. It does not use the magnetic field of an external magnet, but the magnetic field generated by the internal plasma. Therefore, superconducting protection is not required. But we still have to continue researching superconducting protection, because in the future, we may use two different magnetic confinement methods at the same time to superimpose the two magnetic fields."

"If superconducting protection is used, is it 202K high-temperature superconducting material?"

"Yes, because the superconducting critical temperature of this superconducting material is very high, dry ice can be used as a refrigerant, and the refrigeration cost is relatively low. In addition, the superconductor is very close to the fusion plasma, and cannot withstand neutron bombardment and activation when the superconductor is working. Selecting materials with relatively high superconducting critical temperatures can also better protect the superconductor machine."

"Okay, Professor Xu, I understand."

Qiao Sen was also very satisfied with Xu You's answer.

It was precisely because of his full confidence in Xu You that Qiao Sen dared to ask Xu You these rather obscure questions in public.

At this time, Chen Pingqiu also raised his hand.

"Professor Xu, for the inner wall material of the nuclear reactor vessel, are we using the same material as EAST?"

“This has not been confirmed yet, but it is definitely that the stronger the performance of the material, the better.”

Hearing Xu You's answer, Chen Pingqiu felt a little proud.

Sure enough, Xu You hasn't finished all the work yet.

In this way, Chen Pingqiu has room to perform.

"Okay, Professor Xu, I and other material experts in the project team will work together to research and develop better quality materials."

"Well, thank you experts for your hard work."

In fact, Xu You already had some ideas about the internal materials of the nuclear reactor vessel.

However, since the idea was not yet mature, Xu You thought it would be better not to speak out in a hurry.

After Xu You answered all the questions.

It was Lin Shi's turn to step forward and explain.

What Lin Shi wants to talk about is his discovery and properties of this new type of plasma.

Because Xu You had already finished the main content, there was not much time left for Lin Shi.

In addition to explaining the results themselves, it also allows everyone to get to know Lin Shi a little bit, so that Lin Shi can have a preliminary exchange with everyone.

"Hello, experts. I am Lin Shi, a doctoral student at Jijing University. Let me explain the properties of this new type of plasma..."

It was the first time for Lin Shi to speak at such an occasion, and she was still a little nervous.

The experts in the audience were also somewhat surprised by the appearance of another young man.

However, when they learned that Lin Shi was Xu You's student and the second place in IPhO that year.

Such things are not so difficult to understand.

…

A young man wandered outside the police station for a long time.

It’s the graduate student in Chen Pingqiu’s laboratory .

After these days of torment, his heart finally couldn't take it anymore.

At this point, if you go in and admit what you’ve done, you’ll likely face severe punishment.

But if you leave here and continue to lose your way, there is no way back.

Will lead to a darker abyss.