Shen Xian sent Waren to the door of the linear accelerator factory: "You arrange business first, and I will pick you up on the weekend and wash the dust for you." ”

Jian Sui took Warlene's mobile phone, entered his own mobile phone number, and instructed Warlene: "Remember to look for me if you have something." ”

"Okay, let's get busy first, see you on the weekend!" Warlene couldn't stand Jian Sui's reluctant eyes, waved goodbye, and carried her luggage into the factory gate.

"Don't look at it, get in the car!" Shen Xian sat in the driver's seat and urged Jian Sui, "Don't make it like life and death, you look like this, be careful to scare Warlene, I won't see you in the future." ”

Jian Sui then sat in the back seat and smiled bitterly: "Let you say it, Volin can really do this." ”

When Warlene rejected him, it was called a simple one, and that one was a desperate one, and he felt heartache when he thought about it now.

"Now that you understand, then don't want your mother-in-law's, Warlene is confused in small things, and there is no ambiguity on the issue of right and wrong, in fact, Wallen is not really confused, she just doesn't care about some things. Shen Xian started the car, and the car quickly merged into the traffic.

After a busy period of work, Wallen was placed in a dormitory.

Said to be a dormitory, in fact, one of the bedrooms of a three-bedroom house, the other two bedrooms, one lives in a married family room has not been assigned to the family room of the two, the man is a factory worker, surnamed Ma, the female is a teacher, surnamed Liu. There is also one bedroom that is vacant.

According to the administrator, there is actually a person living in this empty bedroom, who is also a female engineer of a hospital who came to their factory to participate in training, but the girl suddenly has no news, her family and the hospital are looking for her, until now, more than two months have passed, the girl is still alive and dead, and this bedroom has been empty.

"Sounds weird, you didn't mean to scare me, did you?" Warleen joked with the Administrator.

The administrator is very talkative and easy-going.

"Hey, what am I scaring you for?" the administrator said truthfully, opening the empty bedroom, "I don't believe you see for yourself, the luggage is still there, I feel that it has been dusty for a long time, and it has been put together in a piece of cloth and covered." ”

As he spoke, the administrator lifted a corner of the white cloth covering the bed.

What Warlene saw peeking out from under the white cloth were girlish things, makeup, underwear with hangers, and casually folded tunics and pants.

"There's still one here. The caretaker lifted a white cloth behind the door, revealing suitcases, buckets, basins, and toiletries.

It seems that the person who lives in this bedroom is really in a hurry, and he has not collected his clothes.

Out of the bedroom, the caretaker locked the door and instructed Warleen: "At all times, girls must pay special attention to their own safety, do not talk to strangers casually, and do not walk with people at will, even those they know."

"We are enthusiastic, if you ask for directions, he is afraid that you will not be able to figure it out, and he is eager to send you to your destination, but there are also people who take advantage of our enthusiasm to cheat and deceive, especially those outsiders, who have done a lot of bad things. ”

The administrator lowered his voice: "We all guessed, this girl may have been tricked somewhere." ”

Then, the administrator's volume changed back to normal: "Of course, I'm not saying that outsiders are all bad people, and those who do bad things are only a few, but just a few people have ruined our good order, and a rat has ruined a pot of dishes." ”

Warlene is a foreigner, and she arranges outsiders like this, isn't she clearly pointing at the monk and scolding the bald man.

Warlene hurriedly expressed her attitude: "Auntie, I understand what you mean, you are kind enough to remind me, how could I misunderstand you." ”

"You're just misunderstood, and I have to say that," the administrator was very persistent, "and I regret not reminding me sooner." ”

"Yes, yes, you're right, Auntie. "People are kind, of course Wallen admits it.

The caretaker aunt then introduced: "The kitchen and bathroom are shared, if you are not used to eating the food in our factory canteen, you can cook it yourself, but you don't want to go into the living room, the small two occupy it, save trouble." ”

Warlene nodded: "Got it, auntie, don't worry." ”

She didn't see the living room at all, it should have been assigned to their territory by the little couple.

The person who taught Warlene was a man in his thirties, named Chen Xinyu, and after some conversations, the two graduated from the same school, the same major, and even the professional teachers who used to teach classes had several of the same.

What's even more coincidental is that the classmate Chen Xinyu stayed in school that year was one of the professional teachers of Wallen.

Wo Lin simply changed her words and called Chen Xinyu Senior Brother Chen.

"Coincidentally, I had dinner with alumni a few days ago, and I met your classmates. Chen Xinyu's mouth was full of Beijing.

Chen Xinyu is not from the capital, because he has worked in the capital for more than a decade, and his accent is almost completely assimilated by the locals.

Warlene was excited: "Isn't it Zhang Kexin?"

When the graduation was assigned, only Zhang Kexin in the class was assigned to the capital.

Chen Xinyu shook his head: "I also know Zhang Kexin, but it's not her, it's also a woman, what is it, I can't remember it all at once, but the people who ate together at that time all left a communication method, I'll look for it when I go back." ”

"Is it Qin Qin?" asked Volin.

There are only four girls in the class, except for her and Zhang Kexin, it is Qin Qin and Chou Min, if it is Chou Min, Volin is not interested in seeing it.

"Yes, yes, it's called Qin Qin," after being reminded by Wo Lin, Chen Xinyu remembered, "It's quite a little girl, her mouth can speak, and she also said that Qin Qin's homonym is relatives, everyone is an alumnus, and they are all relatives." ”

"Haha, that's her. "Warren Lehe," Qin Qin's mouth, everything that can't be hit by eight poles can be pulled together, you can't find fault with her, what is she doing in the capital?"

Chen Xinyu picked up a screwdriver and waved: "I can't remember the specific situation, wait for me to give you her contact information, you can ask her yourself, let's work now." ”

A linear accelerator is usually an accelerator that uses a high-frequency electromagnetic field to accelerate, and at the same time, the trajectory of the accelerated particles is a straight line. According to the type of particles to be accelerated, it can be divided into electron linear accelerators, proton linear accelerators, heavy ion linear accelerators and superconducting linear accelerators.

The medical electron linear accelerator is a large-scale medical device that uses a microwave electric field to accelerate electrons to produce high-energy rays, which can be used in long-distance external radiation therapy activities in human medical practice, and can generate X-ray and/or electron radiation beams.

High-energy X-ray has the characteristics of high penetration, low skin dose, and high radiation uniformity, and is suitable for the treatment of deep tumors.

Electron beams have a certain range and low penetrating ability, and are used to treat superficial tumors.

According to the division of output energy, medical electron linear accelerators are generally divided into three types: low-energy machines, medium-energy machines and high-energy machines. According to the division of X-ray energy, medical electron linear accelerators can be divided into single photons, two photons and multiphotons.

The low-energy medical electron linear accelerator, which provides only one block of X-radiation, is an economical and practical radiotherapy device for the treatment of deep tumors.

In addition to providing two levels of X-radiation for the treatment of deep tumors, the Zhongneng medical electron linear accelerator also provides 4-5 levels of electron radiation of different energies for the treatment of superficial tumors, which expands the application range, and the depth of superficial treatment can be in the range of 2-5cm.

High-energy medical electron linear accelerator, providing two levels of X-radiation, becoming a two-photon machine, individual products can even provide multi-stop X-radiation, multi-gear setting I purpose, in order to achieve the adjustment of X-radiation depth dose characteristics, because the use of high and low energy X-radiation combination irradiation, equivalent to adjusting energy.

The high-energy medical electron linear accelerator can provide higher energy electron radiation, which is generally divided into 5-9 gears, which expands the treatment depth range (2-7cm) for superficial tumors.

At present, the accelerator plant only produces single-energy X-ray accelerators, i.e. low-energy accelerators.

Medical electronic linear accelerator is a relatively complex large-scale medical equipment, involving many disciplines and technologies, such as accelerator physics, nuclear physics, radio, electrical engineering, electronics, automation control, electromagnetism, microwave technology, machinery, precision machining, electronic computers, refrigeration, fluid mechanics, etc.

"Hey, you need so many disciplines and technologies. After listening to Chen Xinyu's introduction, Warlene's eyes widened.

"You don't produce accelerators, you are application accelerators, as long as you know that there is such a thing, and when you really encounter problems with accelerators, you will have a headache and a pain in your feet, and you can't solve the problem, so you can trace back to the source and start from the principle. ”

Chen Xinyu analyzed for Warlene: "You said that you have repaired other instruments in the hospital, but the accelerator is different, it can be said that the accelerator is a comprehensive instrument, and your maintenance experience is very useful for repairing the accelerator, but it is far from enough." ”

Seeing that Volin was nervous because of his words, Chen Xinyu comforted Volin: "But don't worry, these disciplines and technologies I said are involved in our major, as long as you are not lazy, how can you not, experience depends on accumulation, no one is born with it." ”

Warlene was still nervous: "However, I only have more than a month to study, how much experience can I accumulate in such a short time?"

"More than a month?" Chen Xinyu wondered, "Why did our director say that when I took you, it was three months." ”

"Three months?" Warlene was confused, "Our equipment section chief told me that he said that he would study before the year and install it after the year." ”

Chen Xinyu was determined: "Not so fast, I have been to see your accelerator room, the computer room has been set up, but the relevant supporting facilities have not yet met our requirements, and when the requirements are met, if you want to install the machine, the hospital has to go through some relevant procedures, especially in terms of radiation protection, all instruments with radiation are not so easy to install, safety first." ”

"Senior Brother Chen, based on your experience, how long will it take for our accelerator to be installed?" asked Chen Xinyu.

Chen Xinyu analyzed: "If the weather is warm and there are no holidays in between, more than a month may be enough, it is winter now, and some facilities that require temperature cannot be done for a while, and it is almost the New Year, and people are like arrows." ”

The New Year is a big event, many people start to prepare for the New Year as soon as they enter the Layue Gate, they can't see anyone during working hours, and they don't have so much smoothness when they get to work, no need for Chen Xinyu to say it, Warlene also understands Chen Xinyu's meaning.

Warleen smiled bitterly: "This time and again, the time has doubled." ”

She and Han Ting said okay, the two of them will be together after the New Year, but now they have fulfilled the old saying, and the plan can't keep up with the changes.

Chen Xinyu cheered up Volin: "It's just that you are worried that you don't have enough experience, more time to study, you will have more confidence in your heart!"

"That's right," Warleen didn't dwell on, "I just have to do my own thing, and we don't care about the rest." ”

"That's right!" Chen Xinyu gave a thumbs up to Volin, "I just like a cool person like you." ”

Warlene just followed the study, although she felt that it was a little difficult to understand, but because Chen Xinyu knew everything, as long as she didn't understand, Chen Xinyu would explain to her repeatedly, she didn't feel tired, and the day's work time passed quickly.

"How do you feel?" the two walked out of the computer room together, and Chen Xinyu asked Volin.

"Hey, hey, the clouds. Warlene was a little embarrassed.

It stands to reason that she has learned the linear accelerator class, and what Chen Xinyu taught her today, she should be able to understand it quickly, but who made "The Principle of Accelerator" an examination course, the open-book exam, she didn't study hard, or she didn't turn the book at all.

Chen Xinyu was amused by Wo Lin's embarrassment: "Haha, it doesn't matter, it's good after a long time, after all, it's our professional thing, no matter how fast you learn than a layman, you are not the first maintenance engineer I bring, but you are the fastest learner." ”

"Senior Brother Chen, thank you for your comfort. Warlene was even more embarrassed.

I have to give myself such encouragement for my professional things, and I really regret that I didn't study hard at the beginning.

But now I regret that I don't use anything, so let's follow along, practice to learn the truth, Wallen hypnotized herself.

"Senior Brother Chen, is there a book about accelerators in the bookstore?" It's still early, and Wallen wants to go to the bookstore to check it out.

The working hours here are not the same as those in Z City, there is no lunch break, there is only one hour of rest at noon, and I have a lunch meal, and it is almost time to go to work in the afternoon, so I get off work early.

"No!" Chen Xinyu replied categorically, "The nuclear physics major is at the level of a giant panda, and there are few colleges and universities in the country that have a nuclear physics major, and I heard that a few colleges and universities are ready to open a nuclear physics major, but it is not so fast, and the accelerator is a giant panda in the nuclear physics major, and the books of the accelerator are sold to whom?"

"Then I want to read the accelerator book, where can I get it?" Wallen wilted, "Senior Brother Chen, do you have it?"

If Chen Xinyu said that the nuclear physics major is at the panda level, Warlene knew it not long after she first entered college, and now nearly six years have passed, and there are still only a few colleges and universities in the country that have this major.

Chen Xinyu shook his head: "I want to say that I don't have it, you definitely don't believe it, but I really don't, I only have the drawings of the accelerator, and the original data of the accelerator is only available in the data room, but it is easy to borrow it." ”

"Huh, is it a secret?" Warlene was surprised that none of the employees in her own factory had accelerator information.

"It's not confidential, it's chaos," Chen Xinyu was a little impatient, "We don't care about the things above!"

Seeing the disappointment on Wallen's face, Chen Xinyu couldn't bear it, and whispered to Wallen: "I heard that our factory is writing a book on accelerators, and when the time comes, you ask our director to ask for it, your hospital is a customer of our factory, and the director should give it." ”

"Really?" Warlene was surprised.

The "Accelerator Principle" textbook in the school is just a simple reading book, which can compare to the book compiled by the manufacturer itself, no matter how expensive the book is, she must buy one.