I Have a Research Support System

The lounge only has a sofa bed and a few chairs.

Xu Qiu and Chen Wanqing sat down at random.

Chen Wanqing whispered:

"The person doing the experiment over there is the staff of the light source, if I remember correctly, it should be Luo Yang.

Their light sources are research institutes, so they also have their own researchers, who generally do theoretical research on the improvement of synchrotron radiation experiments, or focus on synchrotron radiation research in certain fields.

I was on the whiteboard outside just now and saw that he was on duty tonight. It is estimated that the last group of testers left after taking the test in advance, so he came over to do the experiment for a while. "

"That's it," Xu Qiu nodded, and then asked a question: "We only have 72 samples, but we have allocated 12 hours of machine time, and an average of 10 minutes per sample, do we need to measure that long?"

"Well, it depends on God's will. There will be more accidents in the light source test, and you will know later," Chen Wanqing said:

"And everyone who comes here to test may have different research fields, so the equipment needs to be re-adjusted before each test.

This debugging process can be very long, and sometimes it takes two to three hours to get it right. "

"Okay, I hope we can be quicker." Xu Qiu stretched his head to look at the office, and found that Luo Yang hadn't finished the test, so he asked:

"Sister, can you tell me about the principle of synchrotron radiation?"

"Okay," Chen Wanqing said:

"Synchrotron radiation refers to the electromagnetic radiation emitted by charged particles traveling at a speed close to the speed of light in a magnetic field and moving along an arc.

Taking the Mordo Light Source as an example, electrons are continuously accelerated in a circular accelerator, during which time wide-band synchrotron radiation from far-infrared to hard X-rays can be produced, with photon energies ranging from 0.1 to 40 kiloelectron volts.

Among them, the hard X-rays have an energy range of 5-20 keV, which is the kind of X-ray we use, generally with an energy of 10 or 18 keV. "

"It sounds like the principle is very simple." Xu Qiu said.

"After the physical principles are discovered, most of them are very simple to express, and people with basic education background can understand them roughly. The difficulty lies in the process of discovery and how to apply them.

Just like synchrotron radiation, it was discovered by high-energy physicists a long time ago, but it has not been applied for a long time, and it is not popular with researchers because it consumes the energy of the accelerator and hinders the improvement of particle energy.

It was not until later that people discovered that synchrotron radiation can emit a continuous spectrum from the far infrared to the X-ray range, and at the same time have excellent properties such as high intensity, high collimation, high polarization, and precisely controllable characteristics, so it was gradually used in Frontier science and technology research. "Chen Wanqing said.

"How does senior sister know so clearly?"

"In scientific research, we must also make good use of search engines."

…………

After the two waited for about half an hour, Luo Yang came over and said:

"I'm done measuring, let's help you debug it next, is it your first time to come to the light source?"

"I've been here twice before," Chen Wanqing pointed to Xu Qiu and said, "He's my junior, and it's the first time I've come to Light Source."

"No wonder I think you are more familiar. What field do you work in and what is the base material?" Luo Yang said.

"Organic solar cells are mainly conjugated polymer materials, and the substrate is silicon wafers." Chen Wanqing said.

"For each sample, the thickness of the silicon wafer and film is about the same." Luo Yang said.

"The same batch of silicon wafers should have little change in thickness, and the thickness of the samples is generally around 100 nanometers." Chen Wanqing said.

"The thickness of more than 100 nanometers can basically be ignored," Luo Yang said:

"That's easy to do. You only need to debug it once, and then when you change the sample and cut it out, you can fine-tune it. First, just take a sample and follow me."

Xu Qiu took out the sample box and picked up sample No. 1 with tweezers.

Then he followed Luo Yang to the test cabin next to him, and the door was open at this time.

On the left side of the entrance is a metal tube, which looks like an X-ray light source. In the middle is a sample stage. On the right side is a curtain-like thing connected with many wires, like a signal receiver. There is also a coin in front of it.

Luo Yang installed a suction table on the sample table, and then motioned Xu Qiu to put the sample on it.

After the samples were placed, Luo Yang pointed to the control box inside and said:

"Go inside and press the Search 1 button, being careful not to touch the instrument or any wiring."

Xu Qiu looked at the control box, which had a row of buttons and indicator lights on it.

Because there was a device in the middle, he walked in from the left and pressed the search 1 button.

Suddenly, a piercing siren sounded.

Fortunately, Xu Qiu was mentally prepared in advance and was not frightened by the sudden sound.

"It's time to come out, go here and press Search 2." Luo Yang said.

There is also a similar control box in the cabin near the hatch door.

Xu Qiuyuan returned, pressed the search 2 button, and left the test cabin.

Then follow Luo Yang to the control box outside the cabin door.

There are four buttons on the control box for closing the door, opening the door, turning off the light, and turning on the light, as well as their respective indicator lights. In addition, a key is inserted. The key has two gears of 0 and 1, and it is currently in gear 1.

"This control box can only be operated when the key is inserted and turned to the first gear." Luo Yang explained.

"Now press the close button."

After Xu Qiu pressed the button, there was a sound of an air pump, and the cabin door was slowly closed from one side.

When the hatch was fully closed, the siren also stopped.

Luo Yang pointed to the rectangular area surrounded by black and yellow warning tape on the ground outside the cabin door, and said:

"There is a pressure sensor here. If someone passes above it during the closing process, the hatch will automatically open to prevent people from being caught by the hatch or locked in the cabin."

"Next, press and hold the light button."

Xu Qiu did the same, but this time there was no other phenomenon except for the change of the indicator light.

"Okay, now there are X-rays in the test cabin," Luo Yang said:

"When you are ready to change the sample after the test, first press to turn off the light, then press to open the door. After changing the sample, search 1, search 2, and finally close the door and turn on the light."

"Okay." Xu Qiu nodded.

Luo Yang took a few steps to the left and came to a large console.

On this console, there are one, two off, one on, two on, alarm buttons and corresponding indicator lights, and there is also a key hole, but there is no key on it.

Luo Yang explained: "This console is the X-ray master control of the current test cabin.

If during the test, you hear the announcement in the light source saying 'light is lost', you must stop the experiment immediately.

Go to the control box outside the cabin to perform the operations of turning off the light and opening the door, then turn the key on it to gear 0, and pull out the key.

Then go to the master control here, insert the key, turn to gear 1, and press the off 1 and off 2 buttons in turn.

If you plan to leave early after the test, you should also perform this operation.

When the broadcast says 'the light is restored', go to the master control and press the ON 1 and ON 2 buttons in turn, then turn the key to gear 0 and pull out the key.

Then insert it into the control box outside the cabin, turn it to gear 1, and the experiment can continue, but this kind of 'light loss' situation is generally not encountered. "

"Okay, I will remember." Xu Qiu said.

He had copied Luo Yang's skills with the system, so he didn't panic at all.