The red, yellow and white Rubik's cube fell quietly on the desk, looking at the little thing that had just been restored, the dark inspiration in Xu Chuan's mind flashed, and there was a hint of bright color in his pupils.

With a thermos cup in his hand, he hurried back to his small room.

In the case of an stellar fusion device, adjusting its overall structure is as difficult as adjusting the engineering strength of a reservoir dam.

If it is said that the adjustment is in the direction of high strength and perfection, there is still hope.

But if you want to weaken the dam in exchange for ease of construction, the consequences are bound to be devastating.

Just like the hydropower dam built by a certain third brother, when the strength is not enough, the dam is destroyed and killed before it lasts for a week after the water is impounded, resulting in a large area of downstream being submerged.

The structure of the stellar simulator is also designed in advance.

It uses a twisted three-dimensional structure and a three-dimensional external field coil to guide the high-temperature plasma inside, allowing it to run smoothly in the chamber.

The use of this is to increase the engineering difficulty in exchange for the operational stability of the plasma.

However, if the structure and external field coil are adjusted, it will affect the strength of the confined magnetic field and the operation of the plasma, and if one is not done well, the hundreds of millions of degrees of high-temperature plasma running in the reactor chamber will be out of control.

And the consequences, refer to the JT-60SA controlled nuclear fusion experimental reactor of the Fusion Research Institute in the small island nation of QST.

Therefore, it is quite difficult to adjust the structure of the stellarator.

But it's not impossible!

In the office, Xu Chuan quickly took out the manuscript paper from the drawer, and the signature pen in his hand quickly fell on the manuscript paper, and his eyes flashed with excitement.

Rubik's cubes, puzzles, reconstructions!

Under the premise of not changing the strength and direction of the magnetic field, the design process of the magnet winding and 1 permanent magnet block is decomposed into the design of each permanent magnet one by one, and then multiple iterations are carried out to obtain the optimal design, and the iterative process includes two parts: local optimization and global optimization, so as to optimize the engineering difficulty.

This method is theoretically feasible.

It just needs him to recalculate the external field confinement coil of the stellarator, and it is even possible to optimize the shape of the superconducting coil with the original three-dimensional structure!

Damn it!

Why didn't he think of this way before?!

Time flies quickly,

Behind the desk, Xu Chuan's pupils were bloodshot, but his face was full of excitement.

The tip of the pen was lightly touched on the paper, and the ballpoint pen in his hand was pinched, and he quickly wrote out the mathematical formulas and basic theories of calculation on the white A4 paper.

The stellarator is the magnetic confinement nuclear fusion pathway with fusion triple product parameters second only to the tokamak, and compared with the tokamak, the stellarator has the advantage of steady-state operation, and also avoids the main disadvantage of the tokamak, the problem of plasma rupture during operation.

However, for a long time, there are two main reasons why stellaroids have not been the first choice for fusion reactor technology routes:

First, the waviness of the magnetic field of the traditional stellarator is larger than that of the tokamak, resulting in a higher level of neoclassical transport and high-energy particle loss than the tokamak.

Second, the stellar simulator needs a coil with a three-dimensional structure, which is complex, difficult to manufacture, and costly.

The former can be solved by a numerical control model of plasma turbulence and a superconducting material with a high critical magnetic field, while the latter, he has now found a way!

At least, in theory, it's completely doable!

I don't know how much time has passed, but in the quiet office, a gurgling sound sounds.

Xu Chuan came back to his senses, touched his stomach, which was already hungry and a little painful, and couldn't help but swallow his saliva.

Looking up, the sun had set outside the window, and the night had darkened.

Glancing at the time on his phone, it was almost seven o'clock, and before he knew it, he had been sitting in the office for almost four or five hours.

Call~

With a long sigh of relief, Xu Chuan stood up from the chair and moved his muscles.

Eat first!

People are iron and steel, and they don't eat hungry for a meal.

In particular, his mental activity does not consume less energy than physical activity.

As soon as he walked out of the office, Xu Chuan bumped into Zheng Hai head-on, still carrying two bags in his hands.

"Yo, Professor, the sun has set, are you willing to come out?" Looking at Xu Chuan who walked out of the door, a trace of surprise flashed in Zheng Hai's eyes, and he joked with a smile.

This researcher is a ruthless man who has no regard for time and body.

Xu Chuan glanced at him, his eyes fell on the two bags he was carrying, and asked curiously, "What are you mentioning?" ”

"Dinner."

Zheng Haiyan said concisely, and then added: "Tang Sijia reminded you that you haven't come out or eaten dinner, it's almost seven o'clock, so it's not a matter of doing research hungry like this." ”

Xu Chuan let out an 'oh', turned around and entered the office again.

Since Zheng Hai brought him dinner, he didn't have to go to the cafeteria.

Unwrapping the plastic bag and taking out the lunch box, Xu Chuan took a look at the dinner, three dishes and one soup in the two-layer lunch box, fried Jiwei shrimp + fried beef with green onion + stir-fried cabbage, and a pigeon soup, lying there quietly.

This dish is much richer than when he went to the cafeteria to eat it himself.

But he doesn't care so much about what he eats, as long as he can fill his stomach.

"Speaking of which, have you found a way to solve the problem?"

In the office, Zheng Hai also opened his dinner, and asked casually while breaking the disposable chopsticks.

Xu Chuan glanced up at him and asked with a smile, "How do you know?" ”

Zheng Hai shrugged his shoulders and said, "If you don't find an idea, you rarely sit in the office for hours at a time. ”

"Huh?" Xu Chuan looked over curiously.

Zheng Hai said with a smile: "I have been running with you for a few years, under normal circumstances, you are an idle person, unless you have a research idea for a certain problem, you will nest in the office or at home, and at other times, you prefer to go out for a run." ”

Hearing this, Xu Chuan thought about it carefully and found that what Zheng Hai said seemed to be right.

He couldn't be idle, and when he was fine, he rarely spent a few days in his room.

Smiling, he asked, "You're very careful about your observations, speaking of which, I don't seem to have asked you which sect you're from, troops?" Armed police? Or where? ”

Zheng Hai took a bite of food, swallowed it and replied, "No, I'm from Guo'an's side." ”

Xu Chuan nodded, remembered something again, and asked curiously, "How many can you fight alone?" ”

Hearing this question, Zheng Hai asked with some tears and laughter: "Why are you suddenly interested in this?" ”

"I'm a little curious, after all, I haven't seen you come over." Xu Chuan thought for a while and said.

It may be that the domestic environment is really safe, anyway, Zheng Hai has been following him for four years, and he has never made a move.

Zheng Hai thought for a moment and said, "If you are an ordinary person, such as a professor like you, there should be no problem with a dozen or so. ”

Hearing this, the corners of Xu Chuan's mouth twitched, okay, has he become a unit of measurement?

It's just that this one person fights ten, which is really exaggerated.

But what he didn't know was that Zheng Hai was still modest.

After all, the place where he came out was specially trained to protect important people at the leadership level of the chief, and a dozen or so ordinary people who had not undergone any training, as long as they were not completely surrounded to death in a very small space, they were probably just enough to warm up?

In the office, the two chatted.

At this moment, the mobile phone in Xu Chuan's pocket suddenly rang.

I took out my phone and looked at it, it was Liang Qu from the Xinghai Research Institute, my finger swiped on the screen, and Xu Chuan connected the phone.

"Hey, Liang Qu, what's wrong?"

"Academician Xu, the testing and commissioning of the Huaxing fusion device has been completed, when will the first operation begin?" On the phone, Liang Qu asked respectfully.

Xu Chuan: "Have you done all the relevant preparations?" ”

Liang Qu nodded and quickly replied: "It's done, and you can start the first operation of Huaxing at any time." ”

Hearing this, Xu Chuan thought for a moment and said, "In this case, it is better to be sooner rather than later, just tomorrow morning, I will go over here." ”

Although the theoretical work in hand has not yet been completed, and the outfield coil on the Western Superconductor side has not been fully produced, this does not affect the trial operation of the stellarator.

The Spiral Stone-7X has set a record run time of two and a half hours, and the debugged equipment has no problems with the simulated ignition experiment after replacing the first wall material.

They also needed data from the stellarator's experimental run to adjust the numerical control model of the plasma turbulence.

After all, the latter was originally built by him based on the data of the tokamak device, and although the stellar mimic and the tokamak device are both magnetically confined routes, there is still a difference after all.

At present, there is no mathematical model for the modification of actual operating data, and even if the simulation operation on the supercomputer is perfect, it is only simulated data, and no one knows how much deviation there is from the real situation.

Therefore, the first trial run should be sooner rather than later.

Liang Qu nodded and said, "No problem, in that case, how about the time scheduled for ten o'clock tomorrow morning?" Two hours in the morning should be enough for a comprehensive test run test of Huaxing. ”

Xu Chuan said with a smile: "You can arrange these things, they are all trivial." ”

On the other side of the phone, Liang Qu's lips moved, and he stopped talking.

The first operation of Huaguo's first stellarator, and it is also related to the core of miniaturized and controllable nuclear fusion technology, is this a trivial matter?

Xu Chuan didn't care about this, in his opinion, this was indeed a trivial matter.

Hanging up the phone, he quickly drained his dinner, walked around twice and then returned to the office, continuing to refine the theory at hand.

This theory, if real and feasible, will save a lot of time and engineering effort for the optimization of stellarators, or the manufacture of miniaturized controllable nuclear fusion reactors.

The next day, early in the morning, Xu Chuan rushed to the Xinghai Research Institute.

The Huaxing fusion device, which was transformed from Spiral Stone-7X, has completed all the preparations and is standing quietly in the core laboratory waiting for the moment to reopen.

Standing in the general control room, Xu Chuan looked down at the Huaxing fusion device lying quietly on the wide ground through the huge monitoring screen, and there were not too many emotional fluctuations in his heart.

The road of stellarstellars, even if there were problems, would not have appeared today.

At least until the final ignition operation begins, the stellarator will not have problems, he is confident.

"Academician Xu, the comprehensive inspection of the Huaxing fusion device has been completed, and all the equipment is normal and there are no problems, and the acceptance experiment can be carried out."

In front of the main console, Liang Qu walked up quickly and reported.

Xu Chuan smiled and said, "Okay, you can command today's experiment, there is no need to ask me." ”

For him, there is no need to control this kind of thing in his own hands.

Then this opportunity, it is far more important to train an additional group of talents to come out than for him to personally direct an experiment that is bound to succeed.

Liang Qu nodded, and looked at the round clock hanging on the wall with a serious face, and the time on it was ticking.

Although this is only a small thing for the person in front of him, for him, for many researchers and engineers at the Energy Research Institute, this is undoubtedly an important moment in the first time that the light of a stellar mimic was lit on the land of China, and it is also an important moment in their lives.

At ten o'clock, Liang Qu took a deep breath and calmly gave an order: "Please note that all units and teams should start to run with electricity!" ”

As the order to start the experiment was given, the staff of the control room of each group quickly got busy.

The external current is stably supplied into the Huaxing fusion device, and the valve of the pipeline connecting the liquid nitrogen and liquid helium storage is opened, and the ultra-low temperature liquid helium and liquid nitrogen flow to different areas through different pipes.

The work is carried out in a steady and orderly manner, and for the people of the Xinghai Research Institute, they have already experienced countless such journeys.

The only difference is that, this time, the target of the experiment has been replaced from a tokamak device to a stellarator.

[The steady-state magnetic field strength reached 41.73 Tesla, and the goal was achieved!] 】

[The fine-tuning magnetic field has been corrected according to the instructions, and the magnetic field in the reaction cavity has reached the target plan!] The outfield coil has been adjusted! 】

【. 】

[Helium three raw materials have been injected! ] 】

[The ICRF heating antenna has been activated, and the current temperature has reached 37 million degrees Celsius, and it is expected to reach 60 million degrees Celsius in three minutes! 】

[Hydrogen inflow is complete, and the simulation experiment data is being collected!] 】

【. 】

In the control room, clear and calm reports continued to sound.

Xu Chuan looked at the data displayed on the main console screen and nodded with satisfaction, on the basis of the controllable nuclear fusion technology that has been realized, and re-take the road of the stellar, everything is quite smooth.

The problems that had been encountered on the Daybreak Device had been solved in advance thanks to the efforts of many scientific researchers in the Xinghai Research Institute.

If it's not a surprise, the next thing should be the most important one.

High-density compression of plasma turbulence in the reactor chamber to test the minimized high-density plasma iris size limit.

This is related to how small the reactor can be under different outer ring confined magnetic field strengths!

(End of chapter)