Chapter 553 The Last Difficulty

"I see……"

Quickly browsing the code on the screen, Lu Zhou had a dazed expression on his face.

With his coding ability, it may be difficult to fully understand this algorithm, but if he only understands the execution logic of the entire plasma control scheme from a few key command lines, it is still no problem for him.

In short, this algorithm is probably a product of machine learning.

Referring to the set of mathematical models he left behind and the set of control schemes edited by the professors of the School of Software of Jinling University, he calculated and simulated the movement trajectories of the primitives in the plasma in countless experiments, and finally carried out the phenomenological model. Correction, set additional parameters to make it as close to perfection as possible.

In the field of application, when the phenomenological model is developed to the extreme, it is no different from a simple and pure theory.

At least there is not much difference in use.

Just like those empirical formulas in fluid mechanics, it is impossible to fully explain them with existing theories, but this does not prevent people from using them on aircraft wings, engines, etc.

Collecting these data and revising the original control scheme in continuous calculation and simulation, if these tasks are done by humans, it may take several years or even ten years.

But for Xiaoai, who lives in the supercomputer, it can make corrections to the control scheme in the first time, and it may be enough to run the stellarator a few times.

In this sense, the algorithm of the plasma control scheme separated from Xiaoai's main program seems to be a kind of AI developed by machine learning technology.

But this kind of AI is undoubtedly much lower than Xiaoai.

If you think about it this way, does this thing count as his and Xiaoai's child?

But this terrible thought was only fleeting.

The moment it just appeared, Lu Zhou quickly threw it behind his head, and then turned off the computer.

I always feel that if he thinks this way, he won't be able to look directly at the guy in the computer.

...

The matter of the plasma control scheme has come to an end. After the supercomputer of the demonstration reactor project is built, the backup program will be migrated there.

The next morning, Lu Zhou got up early, called Wang Peng, and asked him to bring a basket of soup dumplings when he came over. After drinking soy milk, dipping ginger and old vinegar for breakfast, he set off for the STAR Research Institute.

In addition to the plasma control scheme, another main purpose of Lu Zhou's return this time is to complete the final design of the liquid lithium neutron recovery system.

Although the work of the STAR Research Institute did not stop during his time in Haizhou, the progress over the past month or so has been the same as the previous month, at least nothing can be called a phased one. The fruits of things come.

This kind of systematic scientific research project is like a bucket. If any piece of wood is short, it can't fetch water.

Now that the material of the first wall has been solved, a series of devices from the core catcher to the heating components are steadily advancing under the work of other research institutes. However, they who are in charge of the most core part of the project have arrived So far no substantial progress has been made.

Even if no one urges them, they still bear a lot of pressure.

Now that Lu Zhou came back from Haizhou, everyone in the institute breathed a sigh of relief.

Looking at Lu Zhou who appeared in the research institute, Sheng Xianfu hadn't had a good night's sleep a few times this month, and smiled haggardly.

"You are finally back, I was thinking that if you don't come back again, I will go to find you."

Lu Zhou: "... Thank you for your hard work."

"It's not hard," Sheng Xianfu said with a sigh as he scratched his thinning hair, "It's just that a few key problems can't be solved, and thinking about it makes people feel dizzy."

Since joining the research institute here, he feels that his hair is getting thinner and thinner.

Hearing this sentence, Lu Zhou's expression was also a little embarrassed.

This technical route was proposed by him, but he himself has been busy with other topics, so he didn't take care of this.

But this is also something that can't be helped, after all, no one thought it would be so troublesome at first. He originally thought that the plan was written in such detail, and with the cooperation of engineers from the nuclear industry group, the problem should not be too big, so he focused on making LPC-1 materials.

Unexpectedly, he still underestimated the difficulty of this subject.

"Call the people in the office to have a meeting," Lu Zhou nodded, and gave an order, "I'll understand the situation first."

"Okay, I'll go now."

Nodding his head, Sheng Xianfu turned around and walked quickly towards the office.

After ordering the meeting, Lu Zhou first returned to his office and looked over the plan for the liquid lithium neutron recovery system, then got up and went to the No. 1 meeting room of the research institute.

Without waiting too long, other people in the institute soon came.

Summoned the researchers and engineers of the STAR Research Institute, Lu Zhou held a brief meeting and learned about the situation from various departments.

According to the heads of several departments, the research at this stage is basically still going on around the idea he formulated before going to Haizhou.

That is, the LPC-1 material of the first wall is used to permeate and decelerate neutrons, the subsequent liquid lithium circulation device absorbs neutrons and releases tritium, and the beryllium reflective layer coated outside the liquid lithium layer absorbs the incompletely reacted neutral The child bounced back.

The recovered tritium exists in the form of gas, is recovered at the top of the device, and re-injected into the reaction chamber to participate in the reaction.

Sitting at the conference table, Professor Li Changxia from Nanhua said solemnly: "...The tritium trapped in the liquid lithium can be collected and solved, just add a filler port on it and inject it into the reactor. For example, it is theoretically feasible to assign the work of separating helium ash to the divertor inside the reactor, or to add a separation device in front of the feed inlet. However, the key now is the thickness of the liquid lithium layer. We have done several sets of experiments , but the effect is not very good."

The thickness of the liquid lithium layer is a very critical issue, whether it is too thick or too thin is not good.

If it is too thick, a large amount of tritium will remain in the liquid lithium, which will reduce the recovery efficiency and greatly increase the engineering difficulty. At the same time, it may also affect the safety of the entire reactor.

Too thin is naturally not good, it will directly affect the proliferation rate of tritium. After all, the half-life of free neutrons is only about 10.6 minutes, which means that they have to consider the decay of neutrons themselves while considering the transmutation of neutrons with other elements.

Ideally, liquid lithium would be used to recover neutrons before they are re-reflected at the beryllium metal interface. However, it is not easy to achieve this.

Lu Zhou: "Have you brought the experimental data?"

"it's here."

Sheng Xianfu nodded, and immediately handed over a document.

Lu Zhou took the document and read it carefully.

Time passed by every minute and every second, and the silence in the meeting room could only hear the ticking of the clock on the wall.

Lu Zhou did not speak, and the researchers sitting at the conference table waited patiently.

After finally reading the information in his hand, Lu Zhou closed the file.

Just when everyone thought that the boss would come up with an idea, his actions were beyond everyone's expectations.

"The research idea is correct. These data are very important. It's just that some methods are missing, so the expected results have not been achieved. You have done a good job during this period, and you haven't had a good rest this month. .”

"That's the end of the meeting. You guys should go back first. Starting today, all departments will have a two-day holiday, and we'll report back the day after tomorrow."

After announcing the end of the meeting and the arrangement of the holiday, Lu Zhou patted the document on the table in the face of unexpected sights.

"I'll take this thing back to ponder over it."

"After three days, I will give you a result!"