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Protection level gamma ray air kerma standard device

An air kerma energy and standard device technology, applied to dosimeters, etc., can solve the problems of not being able to verify multiple protective instruments at the same time, and the verification efficiency is not high, so as to achieve the effect of improving efficiency and improving detection efficiency

Inactive Publication Date: 2013-09-04
四川中测辐射科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a protective level gamma ray air kerma standard device, which solves the problem that the existing gamma ray air kerma standard device cannot verify multiple protective instruments at the same time, and the verification efficiency is not high

Method used

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  • Protection level gamma ray air kerma standard device
  • Protection level gamma ray air kerma standard device

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] figure 1 An embodiment of a protective level gamma ray air kerma standard device of the present invention is shown: a protective level gamma ray air kerma standard device includes a source chamber 1, two collimators 2, two sets of attenuation device system 3 and two sets of three-dimensional test platforms 4, wherein the source chamber 1 is mainly composed of a lead tank 11, a source rod 12 and a cylinder 13, the cylinder 13 is installed under the lead tank 11, and the source rod 12 is installed vertically Inside the lead tank 11, the two sets of attenuator systems 3 are respectively arrang...

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Abstract

The invention discloses a verification and calibration device of an environment and protection level dosage (rate) instrument, and particularly relates to a protection level gamma ray air kerma standard device. A source compartment (1) mainly comprises a lead jar (11), a source rod (12) and an air cylinder (13), wherein the air cylinder (13) is arranged below the lead jar (11); the source rod (12) is vertically arranged in the lead jar (11); two attenuator systems (3) are arranged on two side walls of the lead jar (11) respectively; two collimators (2) are arranged in the lead jar (11), one ends of the collimators (2) are connected with the source rod (12), and the other ends of the collimators (2) are respectively connected to the two attenuator systems (3); and two three-dimensional testing platforms (4) are arranged on the side edges of the two attenuator systems (3). According to the protection level gamma ray air kerma standard device, two protection instruments can be simultaneously verified, the efficiency is doubled, and the detection efficiency is greatly improved.

Description

technical field [0001] The invention relates to a verification and calibration device for an environment and protection level dose (rate) instrument, in particular to a protection level gamma ray air kerma standard device. Background technique [0002] The γ-air kerma (environment and protection level) standard device is mainly used for the calibration of the environmental level dose (rate) instrument and the protection level dose (rate) instrument. It consists of radiation source, source storage device, collimator, guide rail, and measurement platform. , standard dosimeter and control system. After the collimated radiation beam is assigned by the standard dosimeter, it is used to calibrate the radiation and environmental protection dose (rate) instrument. Its main feature is that the radiation beam is projected in one direction, the detector of the tested instrument is placed in the center of the radiation field, and the error of the radiometer is calibrated by comparing t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/02
Inventor 杨勇林滔李书琼范杰
Owner 四川中测辐射科技有限公司
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