Radiation detector measurement light-avoiding device and method
A technology of radiation detectors and detectors, applied in the field of nuclear radiation detectors, to achieve the effects of weight reduction, high detection efficiency, and consistency assurance
Inactive Publication Date: 2018-12-18
SHANXI ZHONGFU NUCLEAR INSTR CO LTD
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Problems solved by technology
[0003] The object of the present invention is to solve the problem of light protection in the process of collecting photons excited by the plastic scintillator in the photomultiplier tube of the detector component, and provide a radiation detector measuring light protection device and its method
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[0017] Such as Figure 1 to Figure 4 As shown, a radiation detector measuring and avoiding light device described in this embodiment includes a front pressure frame 1, a mucous membrane frame 2, a plastic scintillator 3, a detector housing 4, a rear pressure frame 5, an inner lining ring 6, and a multiplier tube Fixing sleeve 7, multiplier tube cover 8, photomultiplier tube 9, voltage divider 10, cable connector 11; the material of the detector shell 4 is 1.0 mm thick aluminum plate pressed by a mold. The inner lining ring 6 is arranged at the bottom of the inner surface of the detector housing 4, and the plastic scintillator 3 is placed in the groove on the detector housing 4; the mucous membrane frame 2 is placed on the The top of the plastic scintillator 3; the front pressure frame 1 is arranged above the mucosa frame 2; the rear pressure frame 5 is arranged under the detector housing 4, the outer edge of the front pressure frame 1, the rear pressure frame A groove area is...
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The invention relates to a radiation detector measurement light-avoiding device and method. According to the technical scheme, the device comprises a front pressing frame, a mucous membrane frame, a plastic scintillator and the like; an inner lining ring is arranged at the bottom of the inner surface of a detector shell; the plastic scintillator is arranged in a groove in the detector shell; the mucous membrane frame is placed above the plastic scintillator; the front pressing frame is arranged above the mucous membrane frame; a rear pressing frame is arranged below the detector shell; a groove area is formed among the outer edge of the front pressing frame, the outer edge of the rear pressing frame, the outer edge of the mucous membrane frame and the outer edge of the detector shell; a photomultiplier tube is mounted in a multiplier tube fixing sleeve along a pin; the tail end pin of the photomultiplier tube is inserted into a tube seat of a voltage division plate; a signal line on the voltage division plate penetrates through a cable joint arranged in a threaded hole in the top end of a multiplier tube outer cover; the multiplier tube fixing sleeve is arranged in the multiplier tube outer cover; and the end window extension end of the photomultiplier tube is inserted into a round hole of the detector shell. The device has the advantages of being good in light-avoiding performance, high in detection efficiency, light in weight and the like.
Description
technical field [0001] The invention belongs to the technical field of nuclear radiation detectors, and in particular relates to a radiation detector measuring light shielding device and a method thereof. Background technique [0002] With the rapid development of my country's nuclear power industry, the field of radiation protection monitoring has also ushered in new opportunities, but it is also full of new challenges. The localization of radiation protection instruments and meters is imperative. At this stage, the self-developed radiation protection instruments and meters are slowly filling the gaps in the field of radiation protection in my country. The whole body surface pollution monitor can quickly measure radioactive surface pollution on all parts of the body. The working principle of the detector part is that when uncharged particles are injected into the plastic scintillator, they are excited to generate photons, and the emitted photons are collected. To the photo...
Claims
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IPC IPC(8): G01T7/00
CPCG01T7/00
Inventor 白宁张佳任熠刘利明刘晋瑾盛佳程昶杜向阳
Owner SHANXI ZHONGFU NUCLEAR INSTR CO LTD