Demystifying the national project, the long-pulse high-power DB967 quadrupole of Xu Photon.

Many scientists say that China is the country most likely to take the lead in realizing Nuclear fusion power generation.This topic may be a bit unexpected,because most people may not know what Nuclear fusion power generation is.

Some media gave an easy to understand example:in the Avengers League,Iron Man saved the world with his cool mecha and won countless fans.

The shining Ark reactor on Iron Man's chest does not need to be replenished with fuel such as coal,gasoline,radioactive heavy metals or light,but the energy density provided is surprisingly high.There is only one kind of energy in the real world:Controllable Fusion Power.

Today,the editor will take everyone into the world of the Xuguang brand"Iron Man"and embark on a unique adventure trip.

What is the International Thermonuclear Experimental Reactor (ITER) Program

Outline of International Thermonuclear Experimental Reactor Program

The International Thermonuclear Experimental Reactor (ITER) program is one of the largest and most far-reaching international scientific research cooperation projects in the world at present. Nuclear fusion research is a major international cooperation program carried out by the world's scientific and technological circles to solve the future energy problems of mankind.

Different from Non-renewable resource and conventional clean energy, fusion energy has the advantages of unlimited resources, no pollution of the environment, no production of high radioactive nuclear waste, etc. It is one of the dominant forms of human energy in the future, and it is also one of the important ways recognized at present that can ultimately solve the energy and environmental problems of human society and promote the sustainable development of human society.

The plan will take approximately 10 years to construct and cost $5 billion (1998 value).

ITER device is a superconducting Tokamak that can produce large-scale Nuclear fusion reaction, commonly known as "artificial sun".

In January 2003, China participated in the ITER program negotiations. In May 2006, the China ITER negotiation joint group represented the Chinese government and jointly signed the ITER program agreement with the European Union, India, Japan, South Korea, Russia, and the United States. These seven countries include the world's major nuclear powers and major Asian countries, covering nearly half of the global population. China's participation in the ITER program is based on the long-term basic demand for energy.

#China EAST Experimental Device of International Thermonuclear Experimental Reactor (ITER) Program#

he world's first fully superconducting Tokamak EAST Nuclear fusion experimental device (also known as artificial sun), designed and developed by China itself, successfully completed its first engineering commissioning in 2006 and passed the national acceptance in March 2007.

In April 2012, the neutral beam injection system of the new generation "Artificial Sun" experimental device (EAST) in China completed the experiment, achieving a domestic record for beam energy and power, and basically meeting the design goals of the EAST project.

The EAST neutral beam injection system of the Hefei Institute of Materials Science, Chinese Academy of Sciences is completely developed by China, covering multiple scientific and technological fields such as precision high current ion sources.

EAST is the only fully superconducting Tokamak with two characteristics and long pulse operation capability in the world at present. Its steady-state operation mode will provide important reference for ITER and future reactors.

In December 2021, the Experimental Advanced Superconducting Tokamak (EAST), known as the artificial sun by the Hefei Institute of Material Science, Chinese Academy of Sciences, was put into operation again. On the evening of December 30, 2021, the operation time of China's "artificial sun" exceeded 1000 seconds, reaching 1056 seconds, which is the longest time that the high-temperature plasma of the Tokamak device operates in the world at present.

This experiment is based on a summary of the results of the previous round of experiments and the upgrading and renovation of EAST auxiliary heating systems. The goal is to make the "artificial sun" more "hot" and "long-lasting". At this point, Hefei Institute of Materials Science has independently achieved technical indicators of 1MA, 100 million degrees Celsius, and 1000 seconds.

Xuguang appears in the Chinese experimental device EAST of the ITER program of the international thermonuclear experimental reactor

The core ion cyclotron system of the thermonuclear fusion experimental reactor uses a Tetrode to generate radio frequency wave power. At present, the DB967 Tetrode required for the magnetic confinement fusion device in China is provided by foreign companies, which is blank in China.

China started late in the research of long pulse high power RF Tetrode, and its technology is weak. The technical parameters that the actual products can reach are far behind those of foreign countries. Xuguang Electronics has over 50 years of experience in the development and production of electronic tubes, and possesses multiple unique and leading domestic technologies.

According to the task requirements of the "2019 Key Research and Development Plan of the National Magnetic Confinement Nuclear fusion Energy Development Research Project", Xuguang Electronics undertook the "Long Pulse High Power RF Tetrode Key Technology Research" project, "Long Pulse High Power DB967 Tetrode Scheme Design and Key Process Research and Regulation Preparation". The project was officially approved by the national level and related funds at the beginning of 2021.

The product is currently under intense design and development, and it is expected that sample tubes will begin trial production by the end of 2022 Stay tuned, guys

What are the advantages of Xuguang in participating in such an important national project

Advantage 1: Xuguang has a complete industrial chain of electronic tube development, production and manufacturing.

Advantage 2: Xuguang currently has the only pyrolytic graphite grid production line in China. With advanced deposition equipment and mature deposition technology, it can not only produce pyrolytic graphite grids that meet usage requirements, but also process and produce high-precision pyrolytic graphite products using pyrolytic graphite deposition technology.

Real photos of Xuguang pyrolysis graphite grid production line

Advantage 3: Xuguang uses a high-energy density laser beam to process graphite grids, and the laser machine uses high-precision linear motors and rotating motors to complete the circumferential cutting of the graphite grids, thereby ensuring the precision processing of the graphite grids.

Advantage 4: Xuguang Electronics has the key exhaust process of high-power Tetrode. Through strict process control of the exhaust temperature, vacuum degree, degassing power rate of each electrode and cooling method of the electronic tube, and the use of ion flow detection method to monitor the vacuum degree of the electron tube, it can ensure the long-term stable operation of the electron tube.