klisemfg Chapter 501 Free Electron Laser!
Chapter 501 Free Electron Laser!
Although Li Yang has been praised by many people, he still enjoys the praise from senior colleagues like Yu Qing.
But then again, he was still somewhat embarrassed by the constant praise, so he quickly changed the subject.
"Mr. Yu, you came all the way here, so you wouldn't come here just to praise me, right?"
"Let's take a look at the design report and drawings first?"
"You are experienced, if there is anything wrong, please help me point it out."
Yu Qing was watching in a trance, but after hearing what Li Yang said, he suddenly raised his head and stared at him with extremely resentful eyes.
"Mr. Li, to use the words of you young people, you are attacking with your face!"
"If I could point out the problems with this design, would I have to come all the way to Guangdong Province?"
In other words, it was because he saw that Li Yang's eyes were sincere, otherwise Yu Qing would have thought that the other party was deliberately teasing him.
In terms of seniority, he is indeed Li Yang's elder.
According to experience, in the field of large warships, I am slightly better than Li Yang.
But in terms of real scientific research capabilities, especially the upgraded and improved laser interception system in front of him, Li Yang is the real master.
Li Yang couldn't help laughing.
I never thought that Mr. Yu is also a humorous person.
He changed the question.
"Then, Mr. Yu, compared to the traditional 'Silent Hunter', what aspects of this design do you think are more advanced, or more in line with the actual use of warships?"
Li Yang's real intention from the beginning to the end was really to let Yu Qing carefully review this design plan.
Although the other party is still slightly behind us in some core technologies.
But Mr. Yu’s experience and knowledge are there, and most of them are practical experience.
Let him take a look at it himself, maybe he can improve some details and make this laser interception system more suitable for actual combat use.
This time, Yu Qing did not make a joke. Instead, he nodded, took out a pair of folding reading glasses from his pocket and put them on. Then he leaned forward slightly and looked at Li Yang's design report more carefully.
He just took a quick look at it and only got a general idea of it, knowing how ingenious and extraordinary this design was.
Now, he is following Li Yang's instructions and adhering to the spirit of nitpicking, wanting to make this already perfect plan even more flawless.
only……
As time passed, Yu Qing not only failed to find some minor problems, but became more and more addicted to it.
"Engineer Li, are you using a free electron laser for this laser interception defense system?"
He pointed to the laser transmitter module in the design and asked.
Li Yang nodded.
"That's right!"
"Does Mr. Yu think that using a free electron laser is too reckless?"
When Li Yang was designing it, he did have some hesitations about the use of lasers.
But after much consideration, the free electron laser, or FEL, was finally chosen.
Now that Mr. Yu has specifically pointed out this aspect, he wants to hear the other party's opinion.
However, Yu Qing shook his head.
"No, I think that you are bold and daring enough to use the free electron laser!"
"FEL is different from traditional lasers. It is a new type of high-power coherent radiation source."
“Although traditional lasers have excellent monochromaticity and coherence, they are low-power, low-efficiency, fixed-frequency, and have variable beam quality.”
"And free-electron lasers don't require gases, liquids or solids as working substances."
"It converts the kinetic energy of a high-energy electron beam directly into coherent radiation, which is equivalent to free electrons, which are the working material of a free-electron laser."
"It's just that the electrons in a free electron laser need to have relativistic speeds. To produce such electrons, very complex processes and methods are required..."
The advantages of fel are obvious, but at the same time, the disadvantages are also very significant.
In order to generate electrons at relativistic speeds, it is necessary to have very precise control over the electron output of the FEL.
He fully agreed with Li Yang's adoption of fel because its advantages far outweighed its disadvantages.
If the cost can be reduced, the mention can be reduced, and the output electronic control can be stable.
So……
The defense capability and defense range of the laser interception system will be greatly enhanced, and the size of the interception system can be reduced several times.
just.
To stably output a large number of relativistic-speed electrons is a very difficult technical challenge.
Li Yang listened carefully, and nodded slightly only after Yu Qing had explained all his points.
"Mr. Yu's concerns are not without reason. In fact, during the design process, this headache-inducing problem really cost me a lot of brain cells."
"It just so happened that I found a solution."
Yu Qing's eyes lit up.
He automatically ignored Li Yang's previous sentence.
By chance?
But others can do it, and you still want to cheat him?
"Mr. Li, would you like to share your method?"
Due to the limited space of the design proposal, this method is not introduced in detail above.
Yu Qing was very curious.
Li Yang smiled slightly.
"nature!"
He took the mouse and pulled out a document.
Yu Qing immediately moved forward.
Tang Xinghai, who had been standing aside without saying a word for a long time, also came forward to find out what was going on.
Li Yang took the opportunity to introduce.
"The working principle of FEL is actually to increase the radiation intensity by transferring the kinetic energy of the electrons to the light radiation through the interaction between the high-speed electron beam in the periodically oscillating magnetic field and the light radiation field."
"In short, high-energy electrons generated by an accelerator are injected into a wiggler magnet with alternating polarity via a deflection magnet."
"The electrons generate electromagnetic radiation, i.e. light pulses, due to their torsional motion. The light pulses are reflected by two mirrors, downstream and upstream, and interact repeatedly with subsequent electron bunches."
"Electrons are grouped together into tiny clusters smaller than the wavelength of light along their direction of motion."
"These tiny bunches convert their kinetic energy into energy in the light field, which increases its amplitude."
"This process is repeated many times until the light intensity reaches saturation."
"The electrons that have been affected are then deflected out of the system by the deflection magnets downstream."
"From its working principle, we can see that the most critical link is to gather electrons into many bunches shorter than the wavelength of light."
"To achieve this effect, a stable electron beam can be used for pumping, and an electron storage ring can be configured to re-accelerate the electron beam and recycle it!"
“This is one of the approaches I took…”
After Li Yang finished speaking, he unscrewed the cap of the mineral water bottle and gulped down the whole bottle of water.
He glanced at Yu Qing and the other person who were still immersed in the method he had described, staring at the text version on the screen in a daze.
After a while, Yu Qing was the first to come back to his senses.
He let out a long sigh, his eyes twinkling.
Looking at Li Yang, he asked with a hint of asking for advice.
"During the cycle, the electrons are decelerated using electrostatic methods or a reverse-operating radio frequency linear accelerator to make full use of the remaining energy of the emitted electron beam?"