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CN-224216881-U - Anti-Compton scattering detector structure

CN224216881UCN 224216881 UCN224216881 UCN 224216881UCN-224216881-U

Abstract

The utility model relates to the technical field of radiation detection equipment, in particular to an anti-Compton scattering detector structure, which comprises a main detector and an anti-Compton detector, wherein the anti-Compton detector is arranged around the main detector and encloses at least one side face, and the anti-Compton detector and the main detector form a single-face anti-Compton scattering structure or a multi-face anti-Compton scattering structure. The utility model is achieved by placing at least one anti-compton detector around the main detector. Signal coincidence is performed between the anti-compton detector and the main detector, and scattered ray signals of which the two detectors are simultaneously responsive are removed from the energy spectrum signals of the main detector. Particularly, in a high-radioactivity environment, a narrow space or a detected environment with shielding objects around, the influence of various scattering on the energy spectrum is reduced, the interference of surrounding high-scattering background on a gamma spectrometer can be reduced, and the energy spectrum quality and the accuracy of nuclide identification are improved.

Inventors

  • ZHANG LAN

Assignees

  • 北京镧宇科技有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (9)

  1. 1. A detector structure for anti-compton scattering comprising a main detector and at least one anti-compton detector arranged around said main detector and enclosing at least one side; the anti-Compton detector and the main detector form a single-sided anti-Compton scattering structure; Or the main detector is arranged in a cube spliced enclosure ring formed by splicing a plurality of anti-Compton detectors to form a multi-face anti-Compton scattering structure.
  2. 2. The anti-compton scattering detector structure of claim 1, wherein said main detector is configured as a semiconductor detector comprising one of CZT, cdTe, hgI, ti Br semiconductor detectors.
  3. 3. The anti-compton scattering detector structure of claim 1, wherein said primary detector is configured as a scintillator detector including one of CsI, naI, laBr scintillator detector.
  4. 4. The anti-compton scattering detector structure of claim 2, wherein when said main detector is a CZT detector, said main detector matched electrode is provided with a plurality of shapes including one of hemispherical, quasi-hemispherical, anode-cathode, cop l ana r coplanar grid and area array pixel structure.
  5. 5. An anti-compton scattering detector structure according to claim 1, wherein the anti-compton detector is configured as a semiconductor detector comprising one of CdTe, hgI 2, tibr semiconductor detectors.
  6. 6. The anti-compton scattering detector structure of claim 1, wherein said anti-compton detector is configured as a scintillator detector including one of CsI, naI, laBr scintillator detectors.
  7. 7. An anti-compton scattering detector structure according to claim 1, characterized in that the anti-compton detector is arranged as a gas detector.
  8. 8. An anti-compton scattering detector structure as claimed in any one of claims 5-7, wherein the structural shape of the anti-compton detector comprises a single-sided plate structure, a spliced polyhedral structure or a single hemispherical structure.
  9. 9. An anti-compton scattered detector structure according to claim 1, wherein the anti-compton detector acts as a shield blocking scattered radiation around the detector structure system.

Description

Anti-Compton scattering detector structure Technical Field The utility model relates to the technical field of radiation detection equipment, in particular to an anti-Compton scattering detector structure. Background In the field of gamma energy spectrum testing, traditional common equipment comprises a Cs I and Na I scintillator gamma spectrometer, and the gamma spectrometer has low price and high cost performance, but has limited energy resolution, and the resolution is higher and can reach 7% @662kev. While the traditional high-purity germanium spectrometer has high energy resolution up to 0.2% @662kev, but requires liquid nitrogen refrigeration, or mechanical refrigeration with large volume and heavy weight, and daily maintenance. In the prior art, the resolution of the LaBr3 scintillator spectrometer can be improved to about 3%, but the detection medium has a radioactive background and has a certain influence on measurement. The tellurium-zinc-cadmium semiconductor detector widely used in the prior art has moderate energy resolution, can reach 1.5 percent, has small volume and light weight, and is suitable for strong radiation fields, limited space or portable equipment. However, in a radiation field with complex environment, high background and serious surrounding scattering, high Compton scattered rays easily appear in the energy spectrum of the detector, and accurate detection of gamma rays in a middle-low energy section is affected. Based on the problems in the prior art, the present utility model provides a detector structure for anti-Compton scattering. Disclosure of utility model The utility model aims to provide an anti-Compton scattering detector structure to solve the technical problem that in the prior art, in a radiation field with serious surrounding scattering, the energy spectrum detection and nuclide identification precision are difficult to meet the identification requirement. The technical scheme is that the anti-Compton scattering detector structure comprises a main detector and at least one anti-Compton detector, wherein the anti-Compton detector is arranged around the main detector and encloses at least one side face, the anti-Compton detector and the main detector form a single-sided anti-Compton scattering structure, or the main detector is arranged in a cube spliced enclosing ring formed by splicing a plurality of anti-Compton detectors, so that the multi-sided anti-Compton scattering structure is formed. Preferably, the main detector is configured as a semiconductor detector, including one of CZT, cdTe, hgI and TiBr semiconductor detectors. Preferably, the main detector is configured as a scintillator detector, including one of CsI, naI, laBr scintillator detector. Preferably, when the main detector is configured as a CZT detector, the electrodes matched with the main detector are configured in various shapes, including one of hemispherical, quasi-hemispherical, cathode-anode planar electrodes, cop l ana r coplanar grid and planar array pixel structures. Preferably, the anti-Compton detector is configured as a semiconductor detector comprising one of CdTe, hg I2, tiBr semiconductor detectors. Preferably, the anti-Compton detector is configured as a scintillator detector, including one of CsI, naI, laBr scintillator detector. Preferably, the anti-compton detector is configured as a gas detector. Preferably, the structural shape of the anti-compton detector comprises a single-sided plate body structure, a spliced polyhedron structure or a single hemispherical structure. Preferably, the anti-compton detector acts as a shielding layer, blocking scattered radiation around the detector structure system. Compared with the prior art, the utility model has the advantages that: The utility model is achieved by placing at least one anti-compton detector around the main detector. And forming a single-sided or multi-sided anti-Compton scattering structure, performing signal coincidence between the anti-Compton detector and the main detector, and removing scattered ray signals which are simultaneously responded in the two detectors from the energy spectrum signals of the main detector. In particular, in the radiation fields with complex environment, narrow space, high radiation background, surrounding wall pipelines and the like and serious scattering, the influence of various scattering on the energy spectrum is reduced, the interference of the surrounding high-scattering background on the gamma spectrometer can be reduced, and the energy spectrum quality and the accuracy of nuclide identification are improved. Drawings The utility model is further described below with reference to the accompanying drawings and examples: FIG. 1 is a schematic diagram of an anti-Compton scattering detector configuration according to the present utility model; FIG. 2 is a schematic diagram of a single-sided anti-Compton scattering detector according to the present utility model; FIG. 3 is a schematic diagram