Although it was already 8 o'clock in the evening, Professor Dennis White's "Nuclear Workshop" was still brightly lit and even bustling with people.
As director of the MIT Plasma Science and Fusion Center, Professor Dennis White is a recognized leader in fusion research.
In addition to his academic attainments and reputation, what is most popular among students about Professor Dennis is that he abandoned traditional standard teaching very early - no longer focusing on classes and playing PPT, but actively encouraging his students to find more
More solutions and more practical problems to solve.
So as early as ten years ago, he assigned his students the task of using the second-generation high-temperature superconducting magnet REBCO to complete the improvement of the then clumsy and huge tokamak device of ITER (International Thermonuclear Experimental Reactor Project).
Facts have proved that Professor Dennis's teaching method is feasible, at least among a group of students with high IQs and strong scientific interests.
After some hard work, his students proposed a steady-state tokamak device named "Vul".
Later, Professor Dennis once again assigned the task to the students, asking his students to complete a new, miniaturized tokamak device with replaceable magnets based on the previous design.
In the process of constantly "asking questions", his students have also been working on solving problems. Finally, two years ago, they completed a small fusion device called SPARC.
Among them, the D-shaped magnet used to confine high-temperature ions is only 2 meters high and 1 meter wide - about 1/8 of the International Thermonuclear Experimental Reactor Program Cooperation Organization ITER.
Half a year ago, Professor Dennis once again proposed a task for his students.
——Understand the idea of a constraint trap proposed by the Eastern genius at an academic meeting, and cooperate with the article in the "Annals of Physics" to complete a bold attempt.
Only this time... his students went a little crazy.
At the beginning, the students made no progress at all and even had difficulty understanding Yeming's ideas.
It was not until September that YE-equation was officially announced.
Like a dawn that dispels the darkness, Professor Dennis's team took the lead in finding a set of spatial solutions under high field strength.
Afterwards, they actively invested in the design.
…
"Professor, although there is no problem with the field strength, the silicon carbide substrate cannot withstand it."
Standing in front of this dismantled small fusion reactor that is one person tall and about four meters in diameter, Mengjiade was excited but also a little worried. He was the professor's Ph.D. more than ten years ago, and was taught by Professor Dennis after graduation.
I was recommended to go to Harvard and was just hired as an associate professor this year.
Because of his familiarity with others, Mengjiade became the best leader for this joint Harvard-MIT team.
"What's the problem?" Professor Dennis looked at his "protégé" and was as persuasive as ever.
Mengjiade laughed: "Maybe it's a breakdown problem, maybe it's an electronic migration or loss problem, we still have to take it apart and analyze it."
"Then let's wait for the analysis. By the way, look here." Professor Dennis pointed to the reactor in the middle: "The escaping neutrons did a good job."
"But it's also very restrained."
"Yes, otherwise why is it called a miracle?"
Professor Dennis raised his head as he spoke, telepathically, and looked at Professor Huo Laien, who was walking over quickly.
"Gee." Dennis opened his arms.
"No time." Professor Huo Laien refused the hug and just took the other person's hand to shake it, and then stood in front of the reactor.
"Is it because the YE field attenuated at 30KeV?" Professor Huo Laien looked at the core of the reactor and asked after a few seconds of silence.
Professor Dennis and Mongard looked at each other. The latter frowned slightly, hesitated for a few seconds and then nodded: "Yes, but the restraint can be stabilized by adding pressure to the restraint device."
"Treading on the Stars"
Professor Huo Laien was silent, and after a moment he breathed out softly.
"Is there any problem?" Professor Dennis looked at his old friend and was keenly aware that something was wrong with Professor Huo Laien.
"There is a problem. I contacted Ye and he said that if silicon carbide or gallium nitride is used, the problem of electron loss will be difficult to solve."
Professor Dennis was startled for a moment, then frowned: "Did they make it?"
"No?"
"If not..." After a few seconds of silence, Professor Dennis laughed: "Then let's wait until we try it - it's not that I don't believe in mathematics, but I think it's better to do it directly than to predict without formulas.
, it is more effective to face the problem head-on and then solve it.”
"..."
*
*
Provincial Communications Auditorium.
Ye Ming did not tell everyone why he "couldn't go far".
He just followed the PPT content step by step and delivered the speech.
Finally, after fully developing and describing the equation, Ye Ming began to turn over a new page of PPT.
"...back to our restraint field."
As soon as he finished speaking, many scholars in the room were visibly refreshed!
He smiled slightly.
"In the constrained field, there is an escape solution, or escape function. In the constrained field model, this solution is related to the breakdown field strength and electron mobility of the substrate."
Ye Ming said as he picked up the pen and walked towards the whiteboard.
"Please submit the contents of the whiteboard."
"Like here."
Ye Ming quickly built a constraint field model: "Let's plug in a few values at will... Well, let's bring in the model of the MIT reactor that was announced to have been running for fifteen minutes."
"They claimed that they continued to react at a high temperature of 20KeV for 15 minutes and terminated at 30KeV - if they were not short of money, they could continue to react to higher records and conditions. Then we have reason to believe that they were at 30keV
There's a problem."
"What's the problem? Apparently constraint decay."
"Then according to the information I heard, their constrained equivalent field strength is 30 Tesla, so according to calculations, their electrode base material should be silicon carbide, because the gallium nitride base will be higher... the energy is...
…”
Ye Ming kept talking while writing down various data.
"Now expand the equation and let's do some calculations."
Ye Ming stopped writing and looked at the entire whiteboard seriously.
In the audience, several mathematicians had already started to pick up their pens. But they gave up immediately...
Because Ye's equation is a very complex system of equations after expansion, if you want to calculate it with a pen, you can't even think about it without half a draft book.
"Well, the values of each item are as follows."
Ye Ming said that he didn't care about the shock and directly wrote the data on a new whiteboard.
"These solutions are actually useless, we only need to look at this solution."
Ye Ming said, circling a relational expression.
"This is a relationship for escaped electrons. I haven't found the right tool to describe it accurately, but obviously there is a threshold for this function based on several variables."