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A cyclotron-based spent fuel extraction agent alpha particle irradiation system and irradiation method

A cyclotron and extractant technology, which is applied in the field of nuclear fuel cycle research and application, can solve the problems of difficulty in accurately simulating extractant, inability to analyze radiolysis on-line, and inability to control the irradiation temperature of extractant, etc., and achieves a wide alpha particle energy spectrum. , high energy effect

Inactive Publication Date: 2021-09-28
SICHUAN UNIV
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Problems solved by technology

[0007] Aiming at the technical problems existing in the existing particle accelerator-based extraction agent α-particle irradiation system, such as difficulty in accurately simulating the α-particle irradiation effect of the extractant, inability to analyze radiolysis products on-line, and inability to control the irradiation temperature of the extraction agent, the invention’s The purpose is to provide a cyclotron-based spent fuel extraction agent α particle irradiation system and its irradiation method, which can accurately simulate the actual working conditions in accordance with the technical requirements of the extraction agent α particle irradiation effect under actual working conditions. α-particle irradiation effect of the spent fuel extractant, and online acquisition of the relationship between the irradiation temperature and the gas-phase or liquid-phase radiolysis products, and the irradiation effect of the extractant

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  • A cyclotron-based spent fuel extraction agent alpha particle irradiation system and irradiation method
  • A cyclotron-based spent fuel extraction agent alpha particle irradiation system and irradiation method
  • A cyclotron-based spent fuel extraction agent alpha particle irradiation system and irradiation method

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Embodiment

[0046] The cyclotron-based spent fuel extraction agent α particle irradiation system provided in this embodiment, such as figure 1 As shown, it includes a cyclotron 1, a beam deenergization and transmission device, an extraction agent irradiation target chamber and an online measurement and control device connected in sequence.

[0047] The cyclotron 1 is used to provide an alpha particle beam with energy not lower than 20 MeV and current intensity not lower than 10 μA. The cyclotron 1 in this embodiment is a commercial CS-30 isochronous cyclotron 1, which can provide an alpha particle beam with an energy of 30 MeV and a current intensity of 30 μA.

[0048] Such as figure 1 As shown, the beam energy reduction and transmission device is installed at the beam outlet end of the cyclotron 1, and is used to transmit and reduce the energy of the alpha particle beam generated by the cyclotron 1 so that when the alpha particle beam reaches the surface of the extraction agent sample ...

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Abstract

The invention discloses a cyclotron-based spent fuel extraction agent α particle irradiation system and an irradiation method thereof. The irradiation system includes a cyclotron, a beam de-energy and transmission system, a solid / liquid extraction agent irradiation system, and a sequentially connected cyclotron. The target chamber and the online measurement and control system; the solid / liquid extractant irradiation target chamber includes a vacuum chamber and the solid / liquid extractant sample chamber installed in the vacuum chamber; the online measurement and control system includes a beam measurement chamber, and a solid A temperature control assembly connected to the liquid extractant sample chamber, a gas phase mass spectrometer connected to the solid extractant sample chamber, a liquid circulation control assembly connected to the liquid extractant sample chamber, and a liquid phase mass spectrometer connected to the liquid circulation assembly. The invention can accurately simulate the α-particle irradiation effect of the spent fuel extractant under real working conditions, can perform α-particle irradiation on both liquid and solid extractants, and achieves the purpose of on-line measurement and analysis of radiolysis products of the extractant.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel cycle research and application, and relates to the irradiation technology of spent fuel extractant, in particular to a cyclotron-based spent fuel extractant α particle irradiation system and an irradiation method thereof. Background technique [0002] The spent fuel produced by nuclear energy utilization contains highly radioactive nuclides such as U and Pu, which has become a long-term safety hazard. How to reprocess spent fuel safely, effectively and economically has become a major scientific and engineering issue for the sustainable development of nuclear energy. The main candidate for disposal of spent fuel is the addition of extraction processes to the nuclear fuel cycle. The selection of extractant is the basis for engineering application, which should not only have excellent extraction performance, but also have good radiation stability and reliability. In the process of spent fuel r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21K5/04G01N30/02G01N30/00
CPCG01N30/02G01N2030/009G21K5/04
Inventor 杨吉军刘宁李智慧冯文杨远友廖家莉李飞泽展长勇
Owner SICHUAN UNIV
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