MTL - The Science Fiction World of Xueba-Chapter 500 Shenguang Engineering
After returning to Jiangcheng, Pang Xuelin's life became calm again.
Occasionally go to Jiangcheng University or West Lake University for classes, and discuss the industrial production plan of superconducting 128 materials with Cao Yuan and Li Changqing. For the rest of the time, Pang Xuelin focused on the study of the existence and smoothness of the N-S equation.
Nowadays, the problem of superconducting materials has been solved. In the field of controllable fusion, there are only two technologies: ultra-high power lasers and ultra-high temperature plasma fluid control.
Pang Xuelin, a high-intensity radiation-resistant material, did not worry. He decided to adopt the helium fusion mode in one step, which could greatly reduce the generation of neutrons.
Therefore, at present, the anti-irradiation materials produced by domestic nuclear fission reactors can fully meet the needs of helium fusion reactors.
For the rest, the manufacture of ultra-high power lasers, this project is mainly handed over to the Laser Fusion Research Center of the Chinese Academy of Engineering Physics.
Since the 1960s, the invention of the laser has opened a door to the problem of how to heat matter to extremely high energy.
The earliest Soviet experts began to consider using laser to heat the material of nuclear fusion, because this method has high energy and does not need to be in contact with the heated substance. The simple understanding is that it is similar to igniting wood chips after focusing the sun.
However, the energy of a single laser is too low, so in order to solve such a problem, the energy of multiple lasers needs to be focused on the same point.
The problem seems simple, but it is very difficult.
Because it must be ensured that within a short heating time, the heated object is uniformly heated in all directions and uniformly collapses towards the center of the sphere.
This not only requires that the alignment direction of each laser is extremely precise, but also requires that the energy level of each laser needs to be strictly controlled in this extremely short time.
At present, the research progress in the United States in this field is the fastest. Its national ignition device is currently experimenting to focus 192 lasers on the same point, including 192 lasers, and output 1.8MJ ultraviolet lasers.
The laser driver equivalent to the size of the NIF device is the French LMJ laser device, which is designed to contain 240 laser beams and output 1.8MJ ultraviolet laser.
In this field, China has also invested huge amounts of money in research.
This is China's "God of Light" plan.
With the advent of lasers in the 1960s, scientists proposed the scientific idea of laser inertial confinement fusion.
In 1964, Academician Wang Ganchang put forward an initiative to study laser fusion, and officially launched the "Shenguang" program in China.
This project was jointly tackled by the Chinese Academy of Sciences and the Chinese Academy of Engineering Physics. Both Shanghai Optics and Changchun Optics are cooperative units.
In 1985, the Shenguang I device was built and put into trial operation.
Shenguang Ⅰ has been in continuous operation for 8 years and has completed several rounds of important physical experiments. It has achieved a number of major achievements with international advanced levels in the experimental research of ICF and "863" related projects, marking China's entry into the world advanced in this field Ranks.
In 1994, Shenguang Ⅰ was retired and the development of Shenguang Ⅱ device was started.
In 2001, China's "Shenguang II" high-power laser device was built at the Shanghai Institute of Optoelectronics, Chinese Academy of Sciences. Its advent marks that China's high-power laser research and laser nuclear fusion research have entered the world's advanced ranks.
At that time, only a few countries such as the United States and Japan could build such a precise giant laser.
The overall technical performance of "Shenguang 2" has entered the top five in the world.
The Shenguang Ⅱ high-power laser experimental device is composed of an eight-channel system and the Shenguang Ⅱ multifunctional high-energy laser system. It was the only high-power neodymium glass solid-state laser experimental device with active probe light in China at that time.
It can emit a laser beam with a power equivalent to several times the sum of the global power grid on the target in one-billionth of a second, form a high-temperature plasma and initiate fusion, and then carry out the interaction between laser and plasma. Physical and inertial confinement fusion Experimental research is an extremely important experimental device for China's strategic high-tech innovation, basic science, and cross-cutting scientific innovation.
In 2015, the Laser Fusion Research Center of the Chinese Academy of Engineering Physics in Mianyang, Sichuan Province, successfully completed the research and development of Shenguang III.
The output beam of Shenguang III is 48 beams, and the total power is 180KJ, which is only one tenth of that of the US national ignition device.
But because of the slow progress of the French LMJ project, Shenguang III has become the second largest fusion ignition device in the world after NIF.
Prior to the success of the superconducting 128 project, Pang Xuelin had discussed the nuclear fusion project with the leadership when he went to Beijing.
At present, the Chinese Academy of Engineering Physics is conducting research and development on the Shenguang IV project. The overall parameters are about twice that of NIF. The maximum power can reach 4MJ, but the energy output from the gigajoule required for helium nuclear fusion is still three different. Magnitude.
However, Pang Xuelin was not very worried about the difficulties in the project.
Among the rewards given by the system for this trip to China ’s Sun World, there are engineering solutions for Gigajoule laser fusion. Based on China ’s R & D experience in the “Shenguang” project, according to the scheme given by the system, it is manufactured Gigajoule laser fusion devices are not difficult.
On the contrary, it is the problem of high-temperature plasma turbulence, which must be solved from a theoretical point of view.
Therefore, before solving the problem of high-temperature plasma turbulence, Pang Xuelin was not prepared to take out the technical route of the gigajoule laser fusion device.
Instead, in order to promote the construction of the electromagnetic catapult space launch project, Pang Xuelin took out the related technical solutions of the molten salt nuclear reactor and gave it to the Chinese Academy of Engineering Physics to promote research and development.
The Chinese Academy of Engineering Physics is the original Ninth Academy of the Ministry of Nuclear Industry, mainly engaged in shock wave and detonation physics, nuclear physics and plasma physics, computational physics, arms control physics, engineering mechanics, fluid mechanics, basic mathematics, applied mathematics, Engineering design, manufacturing process, radiochemistry, organic chemistry, polymer materials, energetic materials, nuclear materials, laser technology and application, pulse power technology and application, electronic technology, information technology, computer science and application Application is the strongest research institution in the domestic nuclear industry.
The molten salt nuclear reactor was originally one of the key research projects of the next generation nuclear reactor of the Chinese Academy of Engineering Physics. Pang Xuelin handed over the related technical solutions of the molten salt reactor to the Chinese Academy of Engineering Physics, which will undoubtedly speed up the development of the molten salt nuclear reactor. The construction of the electromagnetic catapult space launch system also has very important significance.
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