A dd neutron generator shielding device
A neutron generator and shielding device technology, applied in shielding, nuclear power generation, DC voltage accelerators, etc., can solve the problems of long construction period, high cost, and large plant area, and achieve convenient maintenance and good integration. Effect
Active Publication Date: 2022-06-28
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology
For the neutrons produced by the DD neutron generator with a neutron yield of 1E8 and an energy of 2.5MeV, the walls and roof of the plant need to be poured with concrete, and the thickness needs to be more than half a meter to meet the requirements of the environmental impact assessment. The plant covers a large area , the construction period is long, the cost is high, and many units are unbearable
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[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0031] like Figure 1 to Figure 4 As shown, a shielding device for a DD neutron generator provided by the present invention includes a first shielding body 1 and a second shielding body 2 . The first shielding body 1 and the second shielding body 2 are assembled to form a sealed cube-shaped shielding body. A first cavity 3 is set inside the first shield body 1, and a second cavity 4 is set inside the second shield body 2. When the first shield body 1 and the second shield body 2 are closed, the first cavity 3 and the second cavity 4 are closed. The cavity 4 together constitutes an equipment compartment for arranging the main part of the neutron generator; the main part of the neutron generator is used to generate neutrons through the DD reaction, and includes an ion source, a vacuum chamber, a high pressure unit, a molecular pump unit and a gas supply de...
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The invention belongs to the technical field of neutron generator shielding, in particular to a shielding device for a DD neutron generator, comprising a sealed cube-shaped shielding body composed of a first shielding body (1) and a second shielding body (2). , a first cavity (3) is set inside the first shield (1), a second cavity (4) is set inside the second shield (2), the first shield (1) and the second shield (2) When closed, the first cavity (3) and the second cavity (4) jointly constitute an equipment compartment where the main part of the neutron generator is arranged; the main part of the neutron generator is used to generate neutrons through DD reaction. The invention realizes the use of the DD neutron generator in common environment without building a neutron shielding hall. For a neutron generator with a DD neutron yield of 1E8, the total dose level at 1 meter away from the outer surface of the shield is less than 1 μSv / h, and the staff can work here for 5000 hours / year. The neutron generator and the shield can be well combined, and the maintenance and repair are convenient.
Description
technical field [0001] The invention belongs to the technical field of neutron generator shielding, and in particular relates to a DD neutron generator shielding device. Background technique [0002] For many universities, research institutes and related enterprises, it is necessary to use neutrons generated by neutron generators for scientific research and neutron activation analysis and detection. Due to the strong radiation of neutrons and the deep penetration of fast neutrons, It is necessary to build a special shielding workshop to shield neutrons to avoid the radiation effects of neutrons on the surrounding environment and personnel. For the neutrons generated by the DD neutron generator with a neutron output of 1E8 and an energy of 2.5MeV, the walls and roofs of the workshop need to be solidly poured with concrete, and the thickness needs to be more than half a meter to meet the EIA requirements, and the workshop covers a large area. , the construction period is long...
Claims
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IPC IPC(8): G21C11/02H05H3/06
CPCG21C11/028H05H3/06Y02E30/30
Inventor 张凯陈红涛赵芳阮锡超刘世龙侯龙龚新宝刘邢宇张坤
Owner CHINA INSTITUTE OF ATOMIC ENERGY