"Chen Zhou, what kind of detector material are you talking about?"

Zhang Yifan finally decided that it would be better to figure it out slowly and not just listen to what Chen Zhou, a man in Europe, said.

"Semiconductor detectors, which are semiconductor materials."

This is an idea that Chen Zhou had early on, and he gained more inspiration through the rubber ball experiment.

The development of particle detectors continues to move forward with the increase in accelerator energy.

With the development of particle physics research, more and more parameters of particles need to be measured, and a single detector can no longer meet these needs.

In the late 1960s, large magnetic spectrometers composed of a variety of detectors appeared in fixed target experiments and collider experiments.

Large magnetic spectrometers are composed of a variety of particle detectors.

Among them are the semiconductor detectors that Chen Zhou is thinking about.

"I don't know much about semiconductor detectors, but I know about semiconductor materials quite well." Hearing Chen Zhou's words, Zhang Yifan said with a smile, "Besides, my graduation thesis is about the research of semiconductor materials."

As soon as Zhang Yifan finished speaking, Chen Zhou immediately said: "Okay, in this case, you can do it together and have a reference for each other."

Zhang Yifan couldn't help curling his lips: "You want my graduation thesis to be used as a reference for your topic?"

"That's right." Chen Zhou said matter-of-factly, "Look at me, this undergraduate's graduation thesis is about Jepov's conjecture, and this graduate's graduation thesis is also about the rubber ball and Goldbach's conjectures. Isn't that a good reference?

"

When Zhang Yifan heard this, he immediately shouted: "Damn it, Chen Zhou, you are so heart-breaking. Come on, you are a Nobel Prize-level boss, and I am just a kid who has not graduated from a bachelor's degree..."

Hearing Zhang Yifan's words, Chen Zhou suddenly felt a chill.

Good guy, are you the only one who is still a child?

Holding back the psychological and physical discomfort, Chen Zhou deliberately said: "How about forgetting it? I'll find someone else?"

"No! Boss!" Before Chen Zhou could finish his words, Zhang Yifan had already said, "Well, look, you're already looking for me. If I reject you, won't you look embarrassed?"

Chen Zhou: "It's not embarrassing, I can just find someone else?"

"Ahem..." Zhang Yifan coughed lightly and said quickly, "No, it's so troublesome to find someone else. We still have to communicate, understand the situation, and cooperate. We definitely don't have the tacit understanding of our deskmates, right? Still.

Yes, look..."

Zhang Yifan chirped again, and Chen Zhou on the other side of the phone was quite dumbfounded.

He feels that this is not Zhang Yifan's style of painting?

In the past, Zhang Yifan was a person with ideas and pursuits, right?

What's going on, now he's like Chen Haining?

Finally, Zhang Yifan concluded: "So, Chen Zhou, with our cooperation experience, you are definitely right to find me."

Chen Zhou asked deliberately: "What about your graduation thesis?"

Zhang Yifan hurriedly said: "It's okay, I can refer to both, and try to come up with a graduation thesis that is astonishing and brilliant."

Hearing this, Chen Zhou joked: "The child has grown up..."

Zhang Yifan: "..."

After a while, Zhang Yifan asked: "Then tell me about the semiconductor detector?"

Chen Zhou replied: "I won't give you a detailed introduction. I have packaged the literature and sent it to your email. You can read it yourself."

Hearing Chen Zhou's words, Zhang Yifan was obviously stunned for a moment, and subconsciously asked: "Did you send it to my email?"

Chen Zhou replied: "Well, take a look."

"Oh, I saw it, I'm downloading..." Before Zhang Yifan could finish his last sentence, he immediately shouted, "Fuck, that's not right, why is your file so big? My Internet speed is 100M.

!”

Chen Zhou chuckled softly: "Maybe your 100M Internet speed is fake."

Zhang Yifan: "How is that possible? I just got broadband..."

Hearing this, Chen Zhou did not explain, but just said: "Yifan, you download it first, and I will also read the documents."

Zhang Yifan responded: "Okay, go ahead."

After hanging up the phone, Zhang Yifan stared at the computer screen and felt that something was wrong the more he looked at it.

What kind of documentation can be so large?

Suddenly, Zhang Yifan realized something.

He remembered the literature materials Chen Zhou asked him to download when he helped Chen Zhou with his project last time.

If we go by that amount, there are really so many that cannot be guaranteed...

Thinking like this, Zhang Yifan couldn't help but feel a little uneasy.

If that were the case, how could he have time to put his graduation thesis and Chen Zhou's topic together for reference?

It would be good if he could help Chen Zhou complete the task of this subject.

However, Zhang Yifan did not call Chen Zhou immediately to confirm.

He is measuring his abilities.

With a "ding" sound, the file download is completed.

Zhang Yifan quickly decompressed the compressed package and opened the folder.

After just one glance, Zhang Yifan shouted again: "Damn it, a whole 129 articles!!!"

Zhang Yifan's cry naturally could not reach Chen Zhou's ears.

However, Chen Zhou can imagine it, that's all.

After hanging up the phone, Chen Zhou began to check CERN's follow-up experimental plan and the experimental time points.

Since Chen Zhou has chosen to continue the academic exchange activities with Friedman, he will definitely not give up halfway.

Then, for CERN's follow-up experiments, he can only choose a time that suits him.

As for the specific experimental content, Chen Zhou feels that as long as it fits the direction of his project, there won't be much of a problem.

"The LHC collision experiment is on August 2nd, let me think about it..."

Chen Zhou took the pen and drew as he read, ticking all the ones that were reasonably timed.

If CERN doesn't mind at all, then he can just choose any one.

After settling the matter of CERN's follow-up experiments, Chen Zhou turned his attention to the literature materials sent to Zhang Yifan.

Not only Zhang Yifan wants to read this part of information, but Chen Zhou himself also wants to read it.

Of course, it is different from the sorting task Chen Zhou asked Zhang Yifan to do.

Chen Zhou himself simply brushed up on literature.

In Chen Zhou's own words, this is a clear research direction for the subject.

Compared with other particle detectors, semiconductor detectors were discovered late.

In 1949, Dr. McKay first irradiated a PN junction diode with alpha rays and observed the output signal.

Of course, this is also due to the limitations of semiconductor technology.

In the early 1950s, the advent of the transistor and the development of transistor electronics promoted the development of semiconductor technology.

This has also accelerated the development of semiconductor detectors.

Semiconductor detectors are radiation detectors that use semiconductor materials as the detection medium.

The most common semiconductor materials are germanium and silicon.

Although the basic principles of semiconductor detectors are similar to those of gas ionization chambers, the application range and application prospects of semiconductor detectors are even wider.

This is reflected in the many new semiconductor detectors developed based on lithium germanium, lithium silicon, high-purity germanium, metal surface barrier type detectors.

For example, silicon microstrips, silicon drift chambers, etc.

In addition to high-energy physics, the fields in which these detectors are applied include astrophysics, industry, safety inspection, nuclear medicine, X-ray imaging, military and other fields.

Moreover, almost all major high-energy physics laboratories in the world use semiconductor detectors as vertex detectors.

The CDF and D0 detectors at Fermilab in the United States, the BaBar experiment at the B meson factory at SLAC, the ATLAS instrument (ATLAS) and the compact muon coil (CMS) at the LHC Large Hadron Collider at CERN, as well as

This is true for Japan's KEK, Germany's HARA, HARB and Zeus detectors.

Moreover, CERN's LHC Large Hadron Collider also uses silicon microstrip detectors instead of drift chambers for track measurement on the two detectors of the ATLAS instrument (ATLAS) and the compact muon coil (CMS).

Track room.

In addition, according to Chen Zhou's understanding, the AMS experiment led by Mr. Ding also uses a multi-layer silicon microstrip detector in the track chamber at the core of the detector to search for antimatter and dark matter in cosmic rays.

The GLAST experimental group, which is participated by the United States, France, Italy, Japan, Sweden and other countries, also uses a multi-layer silicon microstrip detector as the core part of its large-area gamma-ray space telescope.

In this space telescope, the multilayer silicon microstrip detector is mainly used as a track measurement telescope for the γ→e-e pair conversion process.

Its total area exceeds 80 square meters!
To be continued...