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Cyclotron ionizing radiation self-shielding device of isotope target system outside magnet yoke

A cyclotron and isotope target technology, which is applied to magnetic resonance accelerators, shielding, and medical equipment, can solve the problems of large footprint, high cost, and difficult construction of shielding walls, so as to improve the overall strength, ensure safety, Effect of improving shielding efficiency

Pending Publication Date: 2020-02-21
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The shielding wall with large thickness has the disadvantages of difficult construction, large floor space and high cost

Method used

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  • Cyclotron ionizing radiation self-shielding device of isotope target system outside magnet yoke
  • Cyclotron ionizing radiation self-shielding device of isotope target system outside magnet yoke
  • Cyclotron ionizing radiation self-shielding device of isotope target system outside magnet yoke

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] Such as figure 1 , 5 As shown, the present invention discloses a cyclotron ionizing radiation self-shielding device for a magnetic yoke external isotope target system, including an isotope production target chamber 7, an accelerator coating 4 and a driving device, and the accelerator coating 4 is coated on a cyclotron The side and top of the accelerator 1, the accelerator cladding layer 4 is divided into a left shield 5 and a right shield 6, and the driving device drives the left shield 5 and the right shield 6 to face or reverse Move in a straight line to close or open and close the accelerator cladding layer 4, the inner surfaces of the left side shield body 5 and the right side shield body 6 are all embedded with an isotope production target chamber 7 close to the yoke of the cyclotron 1, and the cyclotron 1 The production target 17 is located in ...

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Abstract

The invention relates to the technical field of cyclotrons, and discloses a cyclotron ionizing radiation self-shielding device of an isotope target system outside a magnet yoke. The device comprises an isotope production target chamber, an accelerator coating layer and a driving device. The accelerator coating layer coats the side and the top of the cyclotron; the accelerator coating layer is divided into a left side shielding body and a right side shielding body which are spliced; the driving device drives the left side shielding body and the right side shielding body to do opposite or reverse linear movement so as to close or open the accelerator coating layer; isotope production target chambers close to the cyclotron magnet yoke are embedded in the inner side surfaces of the left side shielding body and the right side shielding body respectively; cyclotron production targets are located in the isotope production chambers; and each isotope production target chamber is surrounded by alead shield layer and a boron-containing polyethylene shielding layer. The device realizes effective shielding of an ionizing radiation field generated by the cyclotron, thereby improving safety andreliability of medical devices and ensuring safety of workers.

Description

technical field [0001] The invention relates to the technical field of cyclotrons, in particular to a cyclotron ionizing radiation self-shielding device for an isotope target system outside a magnetic yoke in medical isotope production equipment. Background technique [0002] At present, in the medical short-lived isotope production cyclotron, the isotope production target system and the accelerator body will generate neutron and photon ionizing radiation during operation. According to China's current regulations and standards, ionizing radiation needs to be protected and reduced to the dose rate limit required by the standard to ensure the safety of radioactive workers and the public. The ionizing radiation shielding of accelerators for isotope production usually requires large-thickness concrete for protection, and the protection means are usually completed by building structures such as shielding walls. A shielding wall with a large thickness has the disadvantages of dif...

Claims

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Application Information

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IPC IPC(8): H05H7/00H05H13/00G21F3/00
CPCH05H7/00H05H13/005G21F3/00H05H2277/116
Inventor 王峰杨光崔涛贾先禄
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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