Chinese Academy of Sciences strong current neutron source successfully produced neutron fusion neutrons

Chinese Academy of Sciences strong current neutron source successfully produced neutron fusion neutrons

Strong Rogue Fusion Neutron Source HINEG

The reporter recently learned from the Institute of Nuclear Energy Safety of the Chinese Academy of Sciences that the newly built HIDG (High Intensity DT Fusion Neutron Generator) of the "FDS Team" was successfully produced in the Phase I experiment on January 2. The neutron fusion neutrons have a flow intensity as high as 1.1x1012 n/s. The strong current accelerator and the high-speed rotating target system achieve continuous and stable operation. The main experimental parameters have reached the international advanced level.

It is understood that neutrons are the "soul" of nuclear power system operation and safety control. Neutron source is an essential experimental platform for researching nuclear energy and nuclear safety technology. The HINEG strong neutron source accelerates helium ion to accelerate the helium ion to bombard the helium target to generate 14.1MeV fusion neutron, which can be used to simulate the neutron environment in the future fusion reactor, carry out helium multiplication, energy extraction, material activation and damage, Scientific experiments related to fusion energy technologies such as radiation protection; moderated neutrons can also be used to simulate the neutron environment in fission reactors and other advanced reactors in future generations, and carry out nuclear radiation safety related experimental research; at the same time, the HINEG neutron source The experimental platform can also realize research and application in the areas directly related to the national economy and people's life such as nuclear medicine and radiotherapy, nuclear logging and prospecting, isotope production and neutron photography, and promote the development of new industrial technologies. The establishment of the HINEG device is of great significance to the research of nuclear energy and nuclear technology in China and the world.

The "FDS Team" has long been engaged in the research of neutron theory and neutron efficient utilization methods for a new nuclear energy system and has obtained a series of achievements with important international academic influence. It has established the Key Laboratory of Neutron Transport Theory and Radiation Safety of the Chinese Academy of Sciences. In order to further carry out experimental verification of theoretical models of innovative neutronics and related nuclear technology experimental research, the team organized professional teams under the cooperation of more than 20 domestic and foreign organizations to continue the research for 6 years, breaking the strong beam current transmission and rotation of helium ions. High-power heat dissipation, fusion neutron source integrated monitoring and control and many other key technologies have been successfully developed, including high-power DC high-voltage power supplies, high-current ion injection systems, high-pressure and high-flow accelerated tubes, high-load heat helium targets, and high-current neutrons. More than ten important subsystems such as the experimental system, hundreds of sets of key equipment, and more than 2,000 square meters of special professional laboratories have been built, and a series of state-provided professional licenses have been obtained. Among them, the high-speed rotating heat-carrying target system has solved the high-efficiency heat dissipation problem under strong beam current bombardment, successfully controlled the target temperature under the heat load of 10kW/cm2 below 200°C, and became one of the few after Germany and Japan. Highly heat-carrying rotating targets that can now be operated stably. (Reporter Zhu Xuerui and correspondent Wang Yongfeng)

Material: SS304, SS316

Weave type: Plain weave, Twilled weave, Dutch weave

FeaturesCorrosion-resisting, Wear-resisting

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Weave type explanation

 

 

1. Plain Weave: also called tabby weave, linen weav or taffeta weave, is the most basic type of weaves.

 In plain weave, the warp and weft are aligned so they form a simple criss-cross pattern. Each weft thread 

crosses the warp threads by going over one, then under the next, and so on. The next weft thread goes under

the warp threads that its neighbor went over, and vice versa.
2. Twill Weave:  In a twill weave, each weft or filling yarn floats across the warp yarns in a progression of interlaces

to the right or left, forming a distinct diagonal line. This diagonal line is also known as a wale. A float is the portion of 

a yarn that crosses over two or more yarns from the opposite direction.
3. Plain Dutch Weave: similar with plain weave, just the weft and warp wire have different wire diameter and different mesh size.
4. Twill Dutch Weave: similar with twill weave, just the weft and warp wire have different wire diameter and different mesh size.
5. Reversed Dutch Weave:  difference from standard Dutch weave lies in the thicker warp wires and less weft wires

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