klisemfg Chapter 830: 3 major methods to suppress ELM!
Chapter 830: 3 major methods to suppress ELM!
Although it was a simple simulation experiment, it lasted from day to night and there was no sign of it ending yet.
Fan Xiaohu and Zhao Hui couldn't bear it any longer in the second half of the night, so they had to take turns on duty.
"Minister Fan, I'll take two hours first, then you'll take two hours. I really can't take it anymore."
Zhao Hui yawned, looking tired.
Fan Xiaohu nodded in agreement.
"no problem!"
He looked into the laboratory, filled with admiration.
"As expected of a researcher, he can endure."
"Director Cao has already stayed up all night, and now he has to stay up all day and night, tsk tsk tsk tsk ..."
It is said that researchers have hard work to do, and Fan Xiaohu absolutely believes it.
Not only do scientific researchers have to spend a lot of effort and rack their brains to conquer the relevant core technologies.
The research process is also very tiring.
Without saying anything more, he sat on a chair outside the laboratory, closed his eyes and took a nap. After two hours, he would take over from Zhao Hui.
And inside the laboratory.
Li Yang was in high spirits and devoted himself to the simulation experiment.
Although Cao Qidong was a little tired both physically and mentally, he became excited at this moment after being attracted by Li Yang's smooth experimental operation.
He was highly focused and assisted Li Yang in his experiment.
“The existence of ELM is the main reason why the Q value cannot be significantly improved.”
"Especially during operation, its periodic explosions will instantly release a large amount of energy and particles to the first wall of the device. Even if it is discovered in time, it will burn or even damage the device within microseconds!"
Seeing that Li Yang's simulation experiment had reached the ELM suppression stage in the plasma control module, Cao Qidong could not help but mention the troubles in this regard.
This problem not only caused headaches for the National Institute of Superconducting Confinement Energy, but also took a long time to be completely solved.
Other research institutes in Longguo, and even companies with considerable progress, have also not found a good solution so far.
Internationally, whether it is the United States or the United States, almost all of them adopt the method of "add noodles if there is too much water, and add water if there is too much noodles" to suppress ELM.
This is a difficult problem that all scientific research teams around the world engaged in the research and development of controlled nuclear fusion need to solve!
Li Yang answered while keeping his hands moving.
"Director Cao is absolutely right. When I reached this step, I was troubled for nearly a week."
"Fortunately, we were able to find a few methods that can effectively suppress ELM."
He said this so that the atmosphere wouldn't be so boring during the experiment.
But who would have thought.
Li Yang's unintentional words shocked Cao Qidong, who looked at him in surprise.
"How much? A week?!"
"Engineer Li, you figured out a solution to this problem in just one week?"
Cao Qidong's voice has changed a little.
It’s only been a week…
Their R&D teams have been troubled by this problem for many years, and so far, there is no effective solution.
Li Yang’s words are so discouraging!
at this time.
Li Yang also realized that something was wrong, especially when he turned around and looked at Cao Qidong's resentful but speechless expression, he realized that he seemed to have filled a large sum of money invisibly?
"Uh……"
He touched his nose awkwardly and smiled.
"Director Cao, I have tried three methods to solve this problem, but I don't know how effective they are."
Li Yang quickly changed the subject.
as predicted!
When talking about the solution to this difficult problem, Cao Qidong's eyes lit up instantly and he instantly forgot about his previous depression.
"Mr. Li, can you explain these three methods in detail?"
Li Yang had no intention of holding back, so naturally he had no reason to refuse.
"Director Cao, please take a look."
"The reason why ELM occurs is actually due to the instability of magnetic fluid during the operation of the plasma confinement device."
"In this case, we might as well change the magnetic topology at the edge of the plasma by applying a three-dimensional magnetic field disturbance to destroy the triggering conditions of the ELM."
"To put it simply, it is a resonant magnetic disturbance, which introduces magnetic island chains or changes the resonance characteristics of the magnetic field near the rational surface."
As he spoke, Li Yang operated the instrument and, through electronic simulation, added a three-dimensional magnetic field disturbance to the running plasma confinement device.
Through the magnifying instrument, it can be seen that after the unstable magnetic fluid is disturbed by the three-dimensional magnetic field, the ELM phenomenon is alleviated at the beginning and then gradually suppressed.
This scene shocked Cao Qidong.
"It works! It really works!"
"The 'naughty' ELM actually began to become 'obedient' under the interference of the three-dimensional magnetic field disturbance?"
He walked forward and continued to observe the subsequent operation of the plasma confinement device.
It was found that since the three-dimensional magnetic field disturbance interference, the temperature of the first wall of the device dropped linearly at a speed visible to the naked eye.
this means.
The energy and particles released into the first wall due to ELM have been greatly reduced.
In previous studies, their team has tried various methods to solve or suppress ELM, but the results were minimal or even no effect at all.
The problems caused by ELM have always seriously affected the progress of controlled nuclear fusion projects, and have also led to the continuous upgrading of device materials over the years due to ELM to prevent ablation.
Now, this problem may be finally solved.
Cao Qidong asked immediately.
"Mr. Li, what are your other two methods?"
The effect of this first method is so significant that he is even more looking forward to Li Yang's other two methods.
As long as they can solve the ELM problem, no one will complain about having too many methods!
Li Yang stopped the electronic simulation of resonant magnetic perturbations and continued to introduce the second method.
"The second method is ultrasonic molecular beam injection!"
"Its principle is to inject a high-speed molecular beam into the edge of the plasma to suppress the ELM burst by changing the density gradient or turbulence characteristics!"
Similarly, Li Yang started electronic simulation experiments.
soon.
After the injection of high-speed molecular beams, the ELM frequency increased by nearly ten times, while the energy release amplitude decreased by fifty percent.
The energy and particles generated by ELM are greatly reduced.
Cao Qidong was completely numb.
Useful?
"Mr. Li, what about the third method?"
He couldn't wait to see it. Could it be that all three methods Li Yang thought of would work?
As if knowing what the other party was thinking, Li Yang decisively introduced the third method.
"Plasma turbulence regulation, by regulating edge turbulence, to suppress the ELM."
"For example, wave-wave interactions could be used to limit the growth time of linear instabilities."
Without Cao Qidong's reminder, Li Yang directly started the simulation experiment of this method.
The result is the same as before, the ELM is well suppressed and the energy is reduced instantly.
Cao Qidong's eyes flickered constantly, and even his breathing became much faster.
He looked at Li Yang and said almost pleadingly.
"Engineer Li, please come to our institute to work on controlled nuclear fusion."
"You can choose any laboratory you want. All researchers, including me, will follow your orders!!!"