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

The high-temperature copper-carbon-silver composite superconducting materials produced by the Western Superconductor Group are processed into special shapes and sent to the warehouse of the engineering base.

This work was carried out in advance, and when the transaction of the ASDEX plant was confirmed during the Chinese New Year, he asked the Planck Plasma Research Institute for detailed design drawings and structural drawings of the ASDEX plant.

Then the research team designed according to the relevant information, and the drawing data after the design was sent to the production line of Western Superconductor Group as soon as possible, and processed into the corresponding superconducting products, which were sent to the base before the ASDEX device was delivered.

According to the design drawing, the project base is brightly lit 24 hours a day, and it is busy working overtime.

In order to stably transform the ASDEX device into a 'dawn fusion reactor', Xu Chuan has not walked out of the Qixiashan project base for more than a month, eating, drinking and lazing all in it.

However, the month-long busyness was worth it, and after the August 1st holiday, as if as a gift, the engineers of the Daybreak Project worked 24 hours a day to finally complete the assembly of the last set of coils.

In order to assemble the high-temperature copper-carbon-silver composite superconducting materials onto the original ASDEX unit, Huaguo Nuclear Industry Construction Group erected a huge gantry of more than 20 meters in the core plant, and also built corresponding fixtures on the outside of each group of superconducting components that provide strong magnetic fields.

These fixtures hold the superconducting components and the Daybreak Fusion Reactor firmly in place in the starting position, in order to prevent displacement or other accidents in the superconducting coils that provide the strong magnetic field.

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

This is also the reason why when the site was originally selected, Xu Chuan required that the geology must be stable.

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

Standing in front of the huge 'Dawn' fusion pile, not only Xu Chuan, but all the staff and researchers had various emotions such as pride, hope, expectation, and hope in their eyes.

But fortunately, the work was successfully completed!

All that's left is to turn on 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 pile in front of him, looked at Academician Peng Hongxi standing beside him, and gave an order:

"Each group prepares, begins to check the installation of the dawn fusion device, reports the situation in a timely manner, and starts the power-on operation according to the scheduled plan!"

After being busy for such a long time, spending 300 million euros and a huge amount of effort to buy the ASDEX device back, it is naturally impossible to let it sit idle here.

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

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

The first is to check whether the assembled Daybreak fusion device is functioning properly, including injecting certain raw materials into it 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 materials can normally provide a large magnetic field of more than 40 T.

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

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

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

2020.10.01。

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

The country and the family are reunited.

On a day like this, congratulating the country with a breakthrough in controlled nuclear fusion engineering is definitely one of the best things to do.

As for the time, it doesn't take long to calculate.

It is now close to the middle of August, and there is still a month and a half to go, and there will be acceptance tests and equipment maintenance adjustments after the test.

It's not very tight, but it's not loose either.

After Xu Chuan gave the order to detect, the engineers of the Daybreak Fusion Device Engineering Team quickly moved.

For him, checking the condition of the equipment is just a phrase on the lips, but in reality it is quite a tedious thing.

From the main body of the Daybreak fusion device, to the supercomputing center dedicated to providing computing power, to the liquid helium and liquid nitrogen equipment for cooling, to the grid stability to provide electricity. Wait a minute.

By the time the engineers of the Daybreak Fusion Unit engineering team had completed all the inspections, it was time for the fourth day after the order was issued.

In the underground core area where the dawn fusion device is placed, all the staff on the Qixia Mountain controllable nuclear fusion project are standing guard at their respective posts.

Standing in the general control room, Xu Chuan looked down on the dawn fusion device lying quietly on the wide ground through the huge monitoring screen. The massive reactor slumbered like a steel behemoth, waiting only for an opportunity to wake up.

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

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

Walking next to Xu Chuan, Academician Peng Hongxi's student, Han Jin, who had previously been in charge of the project "Nuclear Energy β Radiant Energy Aggregation and Conversion Electrical Energy Mechanism", also joined the controlled 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, the comprehensive inspection of the Dawn Fusion Device has been completed, and all the equipment is normal and can be accepted for testing." ”

Hearing Han Jin's report, Xu Chuan nodded, took a deep breath, and calmly gave the order: "Start powering up!" ”

As the order to start the experiment was given, the staff of the control room of each group quickly got busy.

The external current is steadily supplied into the dawn fusion device, and the valve of the pipe connecting the liquid nitrogen and liquid helium storage is opened, and the ultra-low temperature liquid helium and liquid nitrogen flow to different areas through different pipes.

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

With the continuous input of strong current, the current through the superconducting coil in the outer field begins to increase rapidly and steadily, and with the sound of strong current passing through the ordinary conductor, the external superconducting coil begins to transform into a superconducting state.

At the same time, the strength of the confined magnetic field and the values of the Daybreak Fusion device fed back to the computer screen in the general control room began to rise.

Looking at the confined magnetic field that rose all the way to 40T, Xu Chuan's tense face also brought a smile.

No matter how many times he tested it before, no matter how many times he used it in his previous life, when the high-temperature copper-carbon-silver composite superconducting materials now deployed on the dawn fusion equipment showed their powerful performance as scheduled, the heart he had been mentioning finally let go.

40.21T！

The magnetic field strength of the bound plasma is one of the keys to controlling the turbulence of UHT plasma in the chamber of a controlled nuclear fusion reactor.

By superimposing a hundred Teslas of magnetic field strength, this is already 80,000 times the strength of the Earth's magnetic field and more than four times the strength of the original ASDEX device.

Such a large confined magnetic field can further and 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 general control room, the staff shouted a trembling and excited report.

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

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

In the general control room, Xu Chuan stood in front of the console, and after confirming that there was no problem with the confined magnetic field and other components, he took a deep breath and continued to give instructions!

"Start the next acceptance process and inject helium-3 into the Daybreak fusion device!"

During the acceptance of a controlled fusion reactor, a trace amount of helium triagas is injected into the chamber, and then the temperature is continuously increased to heat it into plasma, which is also a very critical step to verify whether the external confined magnetic field can successfully control the plasma raw material in the reactor chamber.

The reason why helium-3 is used instead of deuterium-tritium gas, the raw material for DT nuclear fusion, is because helium-3 fusion requires more demanding conditions.

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

For example, the temperature of the sun's inner core is only 15 million degrees, but hydrogen-helium fusion reactions have been taking place and maintaining there.

On Earth, however, if a fusion reaction is to be maintained by controlled nuclear fusion, it would need to be at least 50 million degrees Celsius.

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

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

However, for simple acceptance, it is definitely impossible to ignite the raw material fusion to output electric energy, and the relevant equipment has not been assembled.

Therefore, in order to prevent the spontaneous fusion phenomenon of the raw materials in the reactor chamber from causing experimental deviations in the high temperature 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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(End of chapter)