Chapter 370 Dawn! Start!

After the Dawn fusion reactor was sent to the Qixia controlled nuclear fusion engineering base, Xu Chuan lived in the base's research institute and personally directed the assembly and transformation of the reactor.

The high-temperature copper-carbon-silver composite superconducting material produced by the Western Superconducting Group was processed into a special shape and sent to the warehouse of the engineering base.

This work was done in advance. When the ASDEX device was confirmed during the Chinese New Year, he asked the Planck Plasma Research Institute for detailed design drawings and structural drawings of the ASDEX device.

Then the research team designed it according to the relevant information. The design drawings and data were sent to the production line of the Western Superconducting Group as soon as possible, and processed into the corresponding superconducting products. Before the ASDEX device was delivered, it was sent to the base.

According to the design drawings, the project base was brightly lit 24 hours a day, and people were busy working overtime.

In order to stably transform the ASDEX device into the Dawn Fusion Reactor, Xu Chuan did not leave the Qixia Mountain Project Base for more than a month, eating, drinking, defecating and urinating inside.

However, this month-long busyness was worth it. After the August 1st Festival, as if it was a special gift, the engineers of the Dawn Project finally completed the assembly of the last set of coils after working non-stop for 24 hours.

In order to assemble the high-temperature copper-carbon-silver composite superconducting material to the original ASDEX device, the China Nuclear Industry Construction Group built a huge gantry of more than 20 meters in the core plant, and built corresponding fixtures on the outside of each set of superconducting components that provide a strong magnetic field.

These fixtures firmly fix the superconducting components and the Dawn fusion reactor at the starting position, in order to prevent the superconducting coils that provide a strong magnetic field from being displaced or other unexpected situations.

After all, what runs in the chamber of the controlled nuclear fusion reactor is an ultra-high temperature plasma with a temperature of hundreds of millions of degrees. If the magnetic field control deviates, I am afraid that the tragedy of the Sakura Country will be repeated again.

This is also the reason why Xu Chuan required the geology to be stable when selecting the site.

After a month of hard work, the assembly and transformation of the ASDEX device was finally completed.

Standing in front of the huge Dawn fusion reactor, not only Xu Chuan, but all the staff and researchers showed pride, hope, expectation, and longing in their eyes.

Fortunately, this work was successfully completed!

What remains is to start the fusion reactor and enter the next stage of the journey after completing the acceptance.

With a smile in his eyes, Xu Chuan glanced at the huge fusion reactor in front of him, looked at Academician Peng Hongxi standing beside him, and issued an order:

"All groups are ready to start checking the installation of the Dawn fusion device, report the situation in time, and start the power-on operation according to the scheduled plan!"

After such a long time of busy work, spending 300 million euros and great efforts to buy the ASDEX device back, it is naturally impossible to let it sit here idle.

Strictly speaking, the first power-on operation is not an ignition operation experiment, it is just an acceptance after the assembly is completed.

As for the goal of the acceptance, it is actually very simple.

The first is to check whether the assembled Dawn fusion device can operate normally, including injecting certain raw materials into the interior and raising the temperature to control its operation.

The second is to confirm whether the external field coil made of high-temperature copper-carbon-silver composite superconducting material can normally provide a huge magnetic field of more than 40T.

These two points are the goals of the first power-on operation, and the operating time is not pursued.

As long as these two goals are achieved, it can be confirmed that the Dawn Fusion Device can start subsequent experiments.

If everything goes well, Xu Chuan is ready to officially start the real first round of ignition operation experiments on a special day!

2020.10.01.

This year's 11th is quite special. It is not only National Day, but also Mid-Autumn Festival!

The country and the family are reunited.

On such a day, it is definitely one of the most beautiful things to congratulate the country with a breakthrough in controlled nuclear fusion engineering.

As for time, it is actually not long.

It is now close to mid-August, and there is still a month and a half in the middle. Acceptance tests and equipment maintenance and adjustment after the test will be carried out.

Although it is not very tight, it is not loose.

After Xu Chuan issued the inspection order, the engineers of the Dawn Fusion Device Engineering Group quickly moved.

For him, checking the condition of the equipment is just a matter of words, but in fact it is a very tedious matter.

From the main body of the Dawn Fusion Device, to the supercomputing center that provides computing power, to the liquid helium and liquid nitrogen equipment for cooling, to the stability of the power grid that provides electricity, and so on.

When the engineers of the Dawn Fusion Device Engineering Group really completed all the inspection work, it was the fourth day after the order was issued.

In the underground core area where the Dawn Fusion Device was placed, all the staff of the Qixia Mountain Controlled Nuclear Fusion Project were standing guard at their respective posts.

Standing in the main control room, Xu Chuan looked down at the Dawn Fusion Device lying quietly on the wide ground through the huge monitoring screen. The huge reactor was sleeping like a steel behemoth, just waiting for a chance to wake up.

Although it was not the first time he stood in this position, his heart was surging and beating like never before.

No one knew that he had been waiting for this moment for at least a dozen years.

Walking next to Xu Chuan, Han Jin, a student of Academician Peng Hongxi, who had previously been responsible for the "Nuclear Energy Beta Radiation Energy Concentration and Conversion to Electric Energy Mechanism" project, also joined the controllable nuclear fusion project as Peng Hongxi's assistant.

At this moment, he was responsible for conveying the report to Xu Chuan on behalf of Academician Peng Hongxi: "Academician Xu, a comprehensive inspection of the Daybreak Fusion Device has been completed. All equipment is normal and has no problems, and the acceptance experiment can be carried out."

After hearing Han Jin's report, Xu Chuan nodded, took a deep breath, and calmly gave the order: "Start powering on and running!"

As the order to start the experiment was issued, the staff in each group of control rooms quickly became busy.

External current is stably supplied to the Daybreak Fusion Device, and the pipe valves connecting the storage of liquid nitrogen and liquid helium are opened, and ultra-low temperature liquid helium and liquid nitrogen flow to different areas through different pipes.

The high-temperature copper-carbon-silver composite superconducting material deployed in the external field quickly reached the Tc critical temperature under the freezing of liquid nitrogen and liquid helium, just like in countless previous experiments.

With the continuous input of strong current, the current passing through the external superconducting coil began to increase rapidly and steadily. With the "sizzling" sound of the strong current passing through the ordinary conductor, the external superconducting coil began to transform into a superconducting state.

At the same time, the confinement magnetic field strength and various values ​​of the Dawn Fusion Device fed back on the computer screen in the main control room began to rise continuously.

Seeing the constrained magnetic field rising to 40T, Xu Chuan's tense face also brought a smile.

No matter how many times he had tested it before, no matter how many times he had used it in his previous life, when the high-temperature copper-carbon-silver composite superconducting material currently deployed on the Daybreak Fusion Equipment demonstrated its powerful performance as expected, he finally let go of what he had been thinking about. Came down.

40.21T!

The strength of the magnetic field that binds the plasma is one of the keys to controlling ultra-high temperature and high pressure plasma turbulence in the controllable nuclear fusion reactor chamber.

By superimposing the magnetic field strength of one hundred Tesla, this is already 80,000 times the strength of the earth's magnetic field, and more than four times that of the original ASDEX device.

Such a huge confinement magnetic field can further and more effectively control the plasma in the reactor chamber.

"The steady-state magnetic field strength reached 40.21 Tesla, and the first phase acceptance goal was achieved!"

In the main control room, the staff rang loudly with trembling and excited reports.

Not just this young researcher, everyone in the control room had joy on their faces.

The steady-state magnetic field of 40.21T, alone, has broken the record of 25.72T of the most advanced all-superconducting tokamak nuclear fusion experimental device (EAST) in China.

In the main control room, Xu Chuan stood in front of the console. After confirming that there were no problems with the constrained magnetic field and other components, he took a deep breath and continued to issue instructions!

"Start the next acceptance phase and inject helium-3 into the Dawn Fusion Device!"

During the acceptance of a controllable nuclear fusion reactor, a trace amount of helium-3 gas is injected into the chamber, and then the temperature is continuously raised to heat it into plasma to verify whether the external confinement magnetic field can smoothly control the plasma in the reactor chamber. Integrating raw materials is also a very critical step.

The reason why helium 3 is used instead of deuterium and tritium gas, the raw material of DT nuclear fusion, is because the conditions required for helium 3 fusion are more stringent.

In fact, to be precise, there are no strict temperature requirements for nuclear fusion to occur, only the intensity of the reaction and whether nuclear fusion can be sustained spontaneously.

For example, the temperature of the core of the sun is only 15 million degrees, but the hydrogen-helium nuclear fusion reaction is always occurring and maintained there.

However, on Earth, if you want to maintain the fusion reaction through controllable nuclear fusion, you need a high temperature of at least 50 million degrees.

As for the higher-level helium-3, if it is used for next-level nuclear fusion, the temperature must be ten times or even higher than that of deuterium-tritium fusion.

Taking the Dawn Fusion Reactor in front of us as an example, deuterium and tritium gas can produce fusion at a temperature of about 50 million degrees, while helium-3 needs to reach at least one billion degrees to produce fusion under the same conditions.

As for the simple acceptance, it is definitely not possible to ignite the raw materials to fuse and output electrical energy, and the relevant equipment has not been assembled.

Therefore, in order to prevent experimental deviation caused by spontaneous fusion of raw materials in the reactor chamber at high temperatures of hundreds of millions of degrees, it is most appropriate to use helium-3, which requires a higher fusion temperature, as the experimental raw material.

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