As one of the main national laboratories of the Department of Energy, SLAC is heavily guarded.

Chen Zhou felt that if it wasn't for a work permit, or someone to lead it.

Even if you are a student at Stanford University, it is estimated that it will be difficult to get in.

After going through a series of security checks, Chen Zhou followed Friedman and others and finally stepped into SLAC's territory.

Compared to the Yenching National Laboratory for Molecular Sciences in Huaguo, SLAC is clearly more legendary.

Earlier, in 1962, construction of the Linear High Energy Electron Accelerator began in the western hills of Stanford University.

This project is called "Project M", which means "monster", that is, Monster.

Later, this monster continued to show its "power".

Quarks, quarks, and anti-quarks are all found here.

As a result, many Nobel laureates have been born here.

In addition, there are more experimental devices here.

In addition to the linear high-energy electron accelerator, there are positron and negative electron acceleration rings, synchrotron radiation light sources, positron and negative electron colliders and linear colliders, etc.

On top of that, it is home to North Mi's first international network.

It was also the first SLAC to demonstrate the potential of the web to physicists through its website.

People in the particle physics community have easier access to the very busy database of scientific literature.

However, SLAC has also experienced a midlife crisis.

In 2008, the collider's large detector SLD was closed for mothballing.

High land prices and construction costs in the San Francisco Bay Area have made building the next generation of Collider impossible.

At the same time, the world's research center for high-energy particles has also been transferred from the United States to CERN, near Geneva, Switzerland.

That is, CERN, which has the largest particle physics laboratory in the world.

At that time, many people wondered whether SLACs could still exist without large colliders.

But as a result, SLAC is still alive and well to this day.

However, SLAC has gradually transformed from high-energy particle physics to a high-intensity X-ray research center.

This is also a kind of survival change.

Chen Zhou's destination on their trip was the PEP laboratory.

That is, the Positron Collider Laboratory.

This is the collider that began to be built in 1980.

The reason for the construction is that the energy of the positive and negative electron acceleration rings is too small.

The ring diameter of the positive and negative electron acceleration rings of SLAC is only 73 meters, and the energy achieved is limited, and the number of particles produced by the collision is limited.

The storage ring of PEP is equivalent to 10 times that of the positive and negative electron acceleration rings!

The number of collisions between positive and negative electrons is also several times that of the positive and negative electron acceleration rings!

It's just that the results of PEP are brilliant without the acceleration ring of positive and negative electrons.

The positive and negative electron acceleration rings are the accelerators that discovered the quarks composed of quarks and antiquarks.

As a result, Burton Richter, who discovered the quark, won the Nobel Prize in Physics.

After that, Martin Lewis Pell also used the positive and negative electron acceleration rings to do physical experiments, and discovered a new particle called τ lepton produced after the collision of positive and negative electrons.

He also won the Nobel Prize in Physics.

Therefore, as the successor of the electron-positron acceleration ring, or rather, more hopeful.

It's true that PEP hasn't been able to match Big Brother's results.

However, SLAC staff did not give up.

This is also the significance of the project in which Friedman took Chen Zhou to participate.

Once the "rubber ball" is discovered, it will inevitably be another Nobel Prize-level achievement!

Since Chen Zhou entered the laboratory, he has honestly followed Friedman.

Not that he was afraid of anything, just before Friedman gave himself a job.

Chen Zhou felt that he only needed to watch and listen more, do less and talk less, and it would be OK.

As for McIson and Coyle, they were arranged for by Friedman to leave from the moment they stepped into the lab.

These two are old acquaintances of the laboratory, and they are quite familiar with the road.

Listening to the conversation between Friedman and a researcher in front of him, Chen Zhou also knew a rough idea.

Friedman is one of the leaders of the project.

There is another one, Chen Zhou has not seen yet.

At this time, Friedman turned around and pointed at Chen Zhou, and said to the researcher, "This is my new graduate student, and I plan to hand him over to you." ”

The researcher was stunned for a moment, then nodded, "Okay, Professor Friedman." ”

Friedman said to Chen Zhou again: "This is Professor Cross, from now on, you will follow him to familiarize yourself with the laboratory. ”

"Okay, Professor Friedman. Chen Zhou's answer was the same as that of Professor Cross.

Friedman finished his order and walked away.

He still has a lot to confirm for the upcoming experiments.

Therefore, it is most suitable to hand over Chen Zhou to someone else to bring.

Chen Zhou glanced at the bearded Professor Cross, who smiled at him.

Chen Zhou asked, "Professor Cross, where do we start?"

Professor Cross said, "Let me show you around the PEP lab. ”

After speaking, Cross took Chen Zhou to the PEP laboratory and wandered around.

To put it simply, PEP is an experimental setup with a ring at one end and a rod at the other.

But the footprint of this thing is not small.

After all, in order to accelerate various particles to extremely high energies, their orbits must reach a sufficient length.

Compared with taking Chen Zhou to visit the experimental equipment of PEP, Cross is more interested in Chen Zhou.

This was the first time he had met Professor Friedman, and he had brought a graduate student from China.

Not to mention, Friedman also brought the Chinese student here.

After introducing some of the experimental devices in front of him, Cross asked Chen Zhou curiously: "Speaking of which, are you a new graduate student this year?"

Chen Zhou nodded: "Yes, I just came to MIT to enroll. ”

Cross asked, "How long have you been in contact with Professor Friedman?"

Chen Zhou replied: "A week, if you start from the first meeting." ”

Cross glanced at Chen Zhou in surprise.

He thought that this was a student who had already crossed paths with Friedman, but he didn't expect that it was actually a pure freshman who had just entered the school.

So how did Friedman bring him here?

When Cross was stunned, Chen Zhou said loudly: "Professor Cross, let's go to the next location." ”

"Oh, good. When Cross came back to his senses, he wanted to ask something more, but he always felt that it was not appropriate for him to ask like this.

While introducing the experimental device to Chen Zhou, he touched the bottom of Chen Zhou through small talk.

Through Cross's question, Chen Zhou also roughly understood what the other party was thinking.

But Chen Zhou did not hide it from the other party, and told Cross truthfully.

This information can be asked by Kroos as long as he asks McIson and Coyle, or even Friedman.

But Chen Zhou thought that there was no information, but in Kroos's ears, he only felt incredible.

He couldn't understand that such a Chinese person, a student who graduated from Yenching University in China.

Even the outstanding graduates of the double degree of the Faculty of Mathematics and the Faculty of Physics have achieved such impressive results in mathematics.

But this is physics, this is the field of high-energy physics, this is the laboratory of the Positron Collider.

He didn't understand what Friedman meant.

At least in his opinion, Chen Zhou should have been polished by the school laboratory and laid a solid foundation before he was qualified to come here, right?

Otherwise, who would dare to involve him in the project?

After following Cross to get acquainted with the PEP experimental setup, Chen Zhou asked, "Professor Cross, what should I do next?"

Hearing this, Cross was stunned for a moment.

For Chen Zhou, he felt that no matter how much speculation there was.

It's always just a new graduate student.

In the absence of special arrangements for Friedman, presumably this kid can only be used as an intern who is not considered an intern.

"An intern who doesn't count as an intern?" Chen Zhou was a little puzzled when he heard Cross's words that he didn't shy away.