Chapter 218: News from the European Side
After submitting the application materials for the Ten Thousand Talents Program, Liu Feng returned to the Institute of High Energy Physics.
The experimental application for finding 5 quark state particles has long been approved, and the preliminary experimental preparations are also in full swing under the supervision of Academician Wang.
When he returned to the positron collision laboratory, Academician Wang had already led the two senior brothers to do the final debugging work on the Beijing spectrometer.
"You kid, you're finally done?"
When Liu Feng finally appeared in front of him in a white coat, Academician Wang greeted him with a smile.
Speaking of which, seeing Liu Feng on the news broadcast and being affirmed by the Great Elder, he was both relieved and worried as a teacher.
Since they have made such achievements in chemistry, why don't they continue to work in this field and pull them to high-energy physics?
In case Liu Feng is really inactive in physics, and the development of chemistry is put on hold, see how you, a teacher, should explain to others!
The gossip here can be imagined without imagination.
He didn't pay much attention to this, what really worried him was that such a genius student, he was afraid that he would not be able to teach well and delay others!
"Well, it's done!"
Liu Feng nodded and asked a little embarrassed,
"Boss, how's the preparation going here?"
Speaking of which, he was the one who advocated the search for 5 quark particles, but he really didn't do anything other than provide a seemingly 'plausible' result.
The declaration and preparation of the experiment were all done by Academician Wang and the two senior brothers, and it seemed that he was like a ready-made one.
"There is no problem at all! After the commissioning of the spectrometer in the capital is completed, we can officially start construction!"
Academician Wang nodded.
"It's just right, since you're back, then you can go to your Senior Brother Guo's side to help, his side has the heaviest task. ”
……
Although the Jingcheng spectrometer is a large-scale particle physics experimental device designed and developed by Huaguo itself, and is composed of a variety of sub-detectors, it is about 6 meters long, 7 meters high and 7 meters wide, and weighs more than 500 tons, which is the condensation of Huaguo's high-energy physicists for 10 years.
But to be honest, except for the detector in the fixed energy region, which can slightly surpass the detection ability of LHCb, the clarity in other energy regions is completely incomparable with LHCb, and it can even be said that one is the sky and the other is the earth, and the tonnage of the latter is thousands of tons, and the detection capacity is 1000 times that of the former!
However, for the particles in the Standard Model theory, the detection of the Beijing spectrometer is sufficient, and the gap with LHCb is also poor in the development and exploration of new physics beyond the model.
At least, the 5 quark state particles are completely within the standard model, and their mass is also between the energy regions of 1GeV~10GeV, which is completely within the detection range of the Beijing spectrometer.
This is evidenced by the previously discovered 6 quark state particles with a mass of 22.35 GeV and unknown particles at 30 GeV~35 GeV.
"Senior brother, do you need me to do anything?"
When he came to the place where Senior Brother Guo was staying, Liu Feng tiptoed in, with a smile on his face.
"You're finally back!"
Senior Brother Guo was busy with something on the computer, and when he saw Liu Feng's cheap smile, he couldn't wait to slap it!
People have been busy for several days, and you kid can still hang around outside and not come to work, hum!
"Well, you help me look at the time-of-flight counter and electronics over there, and report the time to me at any time. ”
"Okay, no problem!"
The so-called time-of-flight counter and electronic system are part of the seven components of the Beijing spectrometer, and its structure is divided into barrel and end.
The barrel part is composed of 48 plastic scintillators with a length of 2.8 meters, light guides, photomultiplier tubes and electronic circuits, and the end part is composed of 2×24 trapezoidal scintillators, light guides, photomultiplier tubes, electronic circuits, etc.
Its main function is to identify the type of particle by combining the measured time-of-flight information with the momentum and trajectory of the particles measured in the main drift chamber. The detection accuracy of the barrel part is 90ps, and the detection accuracy of the end cover is 110ps, which requires the time measurement accuracy of the readout electronics system to be better than 250ps.
“99ps!”
“103ps!”
“137ps!”
……
With Liu Feng's report, Senior Brother Guo summarized the data on the computer, and then carried out plot analysis.
It took about an afternoon to adjust the parameters of this instrument.
"Damn, I'm tired!"
After entering the last data, Senior Brother Guo finally stood up and stretched.
"Whew~!"
Liu Feng also breathed a sigh of relief.
For an afternoon, he basically stared at the display screen without taking his eyes off the whole time, even if he has always prided himself on being an iron man, his eyes felt sour at this time, and he almost couldn't open his eyes.
High-energy physics experiments, especially those done on such a large collider, are only for the last few hours of the experiment, and the preparation work required in front of them is almost calculated in months, and the manpower required in it is not just one or two people that can be completed, at least dozens or hundreds of people.
It is no wonder that in recent decades, research results in high-energy physics have become increasingly scarce; unlike chemical experiments, which are a few minutes or hours, or no more than a day or two—the number of trial-and-error can be said to be in the thousands.
But what about high-energy physics experiments?
Waiting for the next experiment, at least dozens of days have passed, and it is necessary to investigate whether it is the cause of the instrument or the parameters on the way.
If it's really the problem caused by the instrument, it's even worse;
Just like before the last LHCb restart, but because the collision time was delayed by tens of seconds, CERN checked the entire collider for tens of kilometers from beginning to end, and it was shut down for almost a year!
In this regard, Liu Feng finally realized that it was not easy.
Stretching his waist, Senior Brother Guo was relieved, turned to Liu Feng and said, "Have you heard about it, CERN, it's time to start the experiment again." ”
"Huh, when did these people move so fast?"
Liu Feng shrugged his eyebrows, surprised.
The work efficiency of those people in Europe is not blown by him, but put on the side of China, and it is absolutely only the share of eating soil!
A 9-to-5 job is a must, and unless that person is very interested in what they do, it's almost impossible to get them to work overtime voluntarily, even with high overtime pay.
Anyway, Liu Feng couldn't look down on that set at all.
Fortunately, Huaguo didn't look down on it at the beginning, otherwise, if you want to rise in a short period of time, it is tantamount to a fool's dream.
"What are they going to investigate this time? Is it still the Higgs dice?"
After a pause, Liu Feng asked curiously.
"Huh!"
Senior Brother Guo smiled, a trace of disdain flashed on his face,
"Those guys, who look down on us Chinese people so much, have to follow the train of thought of a Chinese person this time. That's right, you kid, once again slapped those arrogant guys! Academician Gao got the news from there, saying that CERN was going to restart the collider and find out what the 1.1346TeV resonance state you discovered last time was!"
Liu Feng nodded.
What exactly is the 1346TeV resonance state, to be honest, he knows very well.
A high-quality particle formed in a special state!
Although it is a new physics beyond the Standard Model, it has little practical significance.
At least, for now.
Because it is neither a supersymmetric particle nor dark matter as physicists expect, it is just a special heavy particle formed by a high-energy collision.
"Just look for it! I'm like I'm going to see what they can find!"
Liu Feng also pursed his lips, revealing an expression of indifference.
"Don't you feel sorry? After all, this is the first thing you discovered. ”
Looking at Liu Feng's breezy expression, Senior Brother Guo was surprised.
If this thing was discovered by him, but he himself could not participate in the experiment to prove this thing, he couldn't say that he had the heart to run away and blow up LHCb, who knew that this little junior brother would behave so open-mindedly.
"It's just a rabble!"
Liu Feng smiled disdainfully,
"No matter how many people there are, no matter how advanced the equipment is, how can they compare to our senior brothers?"
"This time, I'm going to compete with those people, who moves faster, whose discovery is more refreshing!"
Staring at Liu Feng's confident face, Guo Shengfei was stunned.
this
Is it the legendary mystery of self-confidence?
But
It's really cowhiather......