Exploring “artificial sun” scientific research project: the most ideal clean energy for mankind

Exploring “artificial sun” scientific research project: the most ideal clean energy for mankind

Imagine that one day, when the resources of the earth are exhausted, can humans use "artificial sun" to obtain energy? Maybe you think there is a bit of fantasy. In fact, there has been significant progress in the research project of a “artificial sun” in Chengdu.

On June 30th, the reporter visited the Chengdu Institute of Nuclear Physics in Southwest China and saw the “artificial sun” research device.

Why Make Artificial Sun

It is the most ideal clean energy for mankind

Why do humans develop "artificial sun"? Experts explained that nuclear energy, as a new type of energy, is of concern to all countries in the world. Nuclear energy includes two forms: nuclear fission and nuclear fusion. Atomic bombs are the principle of nuclear fission; hydrogen bombs and the sun are the principle of nuclear fusion. "Controlled nuclear fusion energy" is considered to be the most ideal clean energy for human beings because of its inherent safety, superiority of no pollution, and abundant fuel resources.

What we call “artificial sun” is “controlled nuclear fusion energy”. At present, China’s relevant research level has reached the international advanced level.

The “氘” (same as “knife”) required for nuclear fusion is the isotope of hydrogen. The helium extracted from a liter of seawater can completely release the energy equivalent to burning 300 liters of gasoline. Scientists initially estimate that about 40 trillion tons of plutonium are contained in the sea water on Earth.

In Chengdu's Southwestern Institute of Nuclear Physics, the temperature of the plasma electrons inside the circulatory device No. 2A Tokamak of the “Artificial Sun” experimental research facility has “jumped” to 55 million °C.

June 30, China-France Joint Experimental Week. The six-member panel of experts from the French Atomic Energy Commission's Controlled Fusion Institute will work with experts from the Southwestern Institute of Physics of the Nuclear Industry to conduct a breakthrough experiment - a new type of antenna (PAM) coupling experiment in the high-speed mode. Imageically speaking, an antenna array was designed to allow microwaves to be perfectly coupled into the plasma to achieve the purpose of heating the "artificial sun" to high temperatures.

In this regard, experts explained that if humans want to peacefully use nuclear fusion energy, they must achieve “controlled nuclear fusion,” and the plasma temperature must reach a high temperature of 100 million degrees Celsius. The success of this new type of antenna experiment will promote Chengdu's "controlled nuclear fusion experiment research" to further advance.

New breakthrough "artificial sun" experiment target is 100 million degrees Celsius

The work site of the "China-France Joint Experimental Week" is located at the Western House.

What exactly is the device known as "artificial sun"? Is it like a sci-fi blockbuster, a giant beacon flashing with various lights? With doubt and curiosity, under the leadership of Duan Xuru, vice president of the Western House, he passed through the control hall to the “artificial sun” experimental research facility—the hall where the Chinese circulator No. 2 A Tokamak device was located.

The experimental device of Chinese circulator No. 2 A was round. The entire experimental device almost filled the hall with an area of ​​100 square meters. The reporter walked onto the second floor and saw the entire scene from a height. The body of the experimental device is round, and its edges are extended by several triangular "corners", resembling a huge five-pointed star. The experimental device reads "Chinese Circulator No. 2 A" in a row. The device is densely packed with a variety of instruments that are constantly blinking. A single steel pipe is connected from the instrument to the experimental device.

“This part of the equipment is for 'artificial sun' service, the main purpose is to allow this experimental device to reach high temperatures.” Duan Xuru, vice president of the Southwest Institute of Physics of the Nuclear Industry Institute, said that at present, the temperature of plasma electrons inside has “jumped” to Above 55 million degrees Celsius, a big step towards the high temperature of hundreds of millions of degrees Celsius required for the "ignition" of fusion devices has taken place. "In this experimental setup, we conducted nuclear fusion plasma research. When its temperature reaches over 100 degrees Celsius, if the plasma density is high enough to produce a controlled nuclear fusion reaction, we are still facing upwards of 100 million degrees Celsius. This goal is to work hard."

The new device put an "antenna array" to help the "sun" produce a greater "heat wave"

According to reports, during the week-long "Chinese-French Joint Experimental Week," Chinese and French experts will conduct a new type of antenna (PAM) coupling experiment in the high-speed mode. The antenna is a key component of the low-clutter-current drive designed specifically for the International Thermonuclear Fusion Reactor (ITER). “This is the first time that experiments have been performed on a controlled nuclear fusion device that operates with a divertor configuration in high-speed mode. We have done a lot of preparation."

What is the principle of the new antenna (PAM) coupling experiment? What is the role it can play? For these problems, Duan Xuru first came up with a “Introduction to Science Popularization” of four methods of “artificial sun” heating. “The experimental device of the Chinese circulator No. 2 A was dubbed by everyone as 'artificial sun'. How could this be done? The artificial sun produces high temperatures of 50 to 60 million degrees Celsius or more. At present, there are four methods for our experiments: the neutral beam injection system heating, the electron cyclotron wave system heating, and the ion cyclotron wave system heating. The antenna coupling experiment is the fourth, a key component in the heating of low clutter systems."

What's the difference between this new type of antenna acting on the "artificial sun" and the "antenna" we understand everyday? Dr. Xu Min made an analogy. "Our usual antenna is to divert all the received waves. The new antenna is to be recaptured to heat the plasma," said Xu Min, a researcher at the Southwestern Institute of Physics of the Nuclear Industry Institute. When the low-clutter "journey" goes to the vacuum wall of the recirculator No. 2A, low clutter In front of the plasma. "We want to see all the low clutter continue to be close to the plasma, coupled to produce a high temperature. At this time, some low clutter will be reflected. So we are only a few centimeters from the plasma. On the vacuum wall, an antenna array was designed to make all the low-level clutter forward as far as possible and to be perfectly coupled with the plasma to generate high temperatures.” (Reporter Zhang Xiangling)

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