Study on point source efficiency function of LaBr3(Ce) detector
BackgroundWhen the relative position of the point source and the detector changes, the detection efficiency will also change. Determining the functional relationship of the detection efficiency with the alteration of the detection distance and angle is beneficial to quickly obtain the detection effi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Science Press
2022-09-01
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| Series: | He jishu |
| Subjects: | |
| Online Access: | http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.090202&lang=zh |
| _version_ | 1811169650060296192 |
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| author | YE Erlei NAN Hongjie SHEN Chunxia XU Feng SHI Lisheng |
| author_facet | YE Erlei NAN Hongjie SHEN Chunxia XU Feng SHI Lisheng |
| author_sort | YE Erlei |
| collection | DOAJ |
| description | BackgroundWhen the relative position of the point source and the detector changes, the detection efficiency will also change. Determining the functional relationship of the detection efficiency with the alteration of the detection distance and angle is beneficial to quickly obtain the detection efficiency of the point source at any position.PurposeThis study aims to determine the spatial point source efficiency function for a LaBr3(Ce) of a specific size.MethodsThe detection efficiency of 152Eu, 137Cs, and 60Co point sources at specific positions were simulated and calculated by MCNP5, and the efficiency of the 3.81-cm (diameter and length) LaBr3(Ce) detector was calibrated by simulation. The detection efficiency of the point source at different positions in the 2π space range of the front of the LaBr3(Ce) detector was calculated. The functional relationship between detection efficiency and angle and distance was obtained by data fitting.ResultsCompared with the experimental results, the maximum relative difference of detection efficiency of point sources calculated by MCNP5 is less than 6%. The maximum detection efficiency of LaBr3(Ce) detector appears at an angle of 90° with the detector axis. With the increase of detection distance and energy, the influence of angle on the detection efficiency of point source gradually decreases. The effect of the spatial position on the detection efficiency is actually the spatial solid angle efficiency of the point source relative to the detector.ConclusionThe detection efficiency of a point source at any position in space can be calculated based on the efficiency function, which has a good reference value and guiding significance for the solution of the LaBr3(Ce) detector efficiency matrix and the efficiency calibration. |
| first_indexed | 2024-04-10T16:45:43Z |
| format | Article |
| id | doaj.art-a66bfb504f1948d9a8bb606c6174b4de |
| institution | Directory Open Access Journal |
| issn | 0253-3219 |
| language | zho |
| last_indexed | 2024-04-10T16:45:43Z |
| publishDate | 2022-09-01 |
| publisher | Science Press |
| record_format | Article |
| series | He jishu |
| spelling | doaj.art-a66bfb504f1948d9a8bb606c6174b4de2023-02-08T01:03:28ZzhoScience PressHe jishu0253-32192022-09-0145909020209020210.11889/j.0253-3219.2022.hjs.45.0902020253-3219（2022）09-0015-08Study on point source efficiency function of LaBr3(Ce) detectorYE Erlei0NAN Hongjie1SHEN Chunxia2XU Feng3SHI Lisheng4Institution of NBC Defense, Beijing 102205, ChinaInstitution of NBC Defense, Beijing 102205, ChinaInstitution of NBC Defense, Beijing 102205, ChinaSchool of Physics and Optoelectronics and Engineering, Anhui University, Hefei 230601, ChinaInstitution of NBC Defense, Beijing 102205, ChinaBackgroundWhen the relative position of the point source and the detector changes, the detection efficiency will also change. Determining the functional relationship of the detection efficiency with the alteration of the detection distance and angle is beneficial to quickly obtain the detection efficiency of the point source at any position.PurposeThis study aims to determine the spatial point source efficiency function for a LaBr3(Ce) of a specific size.MethodsThe detection efficiency of 152Eu, 137Cs, and 60Co point sources at specific positions were simulated and calculated by MCNP5, and the efficiency of the 3.81-cm (diameter and length) LaBr3(Ce) detector was calibrated by simulation. The detection efficiency of the point source at different positions in the 2π space range of the front of the LaBr3(Ce) detector was calculated. The functional relationship between detection efficiency and angle and distance was obtained by data fitting.ResultsCompared with the experimental results, the maximum relative difference of detection efficiency of point sources calculated by MCNP5 is less than 6%. The maximum detection efficiency of LaBr3(Ce) detector appears at an angle of 90° with the detector axis. With the increase of detection distance and energy, the influence of angle on the detection efficiency of point source gradually decreases. The effect of the spatial position on the detection efficiency is actually the spatial solid angle efficiency of the point source relative to the detector.ConclusionThe detection efficiency of a point source at any position in space can be calculated based on the efficiency function, which has a good reference value and guiding significance for the solution of the LaBr3(Ce) detector efficiency matrix and the efficiency calibration.http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.090202&lang=zhlabr3(ce) detectorefficiency calibrationpoint source efficiency function |
| spellingShingle | YE Erlei NAN Hongjie SHEN Chunxia XU Feng SHI Lisheng Study on point source efficiency function of LaBr3(Ce) detector He jishu labr3(ce) detector efficiency calibration point source efficiency function |
| title | Study on point source efficiency function of LaBr3(Ce) detector |
| title_full | Study on point source efficiency function of LaBr3(Ce) detector |
| title_fullStr | Study on point source efficiency function of LaBr3(Ce) detector |
| title_full_unstemmed | Study on point source efficiency function of LaBr3(Ce) detector |
| title_short | Study on point source efficiency function of LaBr3(Ce) detector |
| title_sort | study on point source efficiency function of labr3 ce detector |
| topic | labr3(ce) detector efficiency calibration point source efficiency function |
| url | http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.090202&lang=zh |
| work_keys_str_mv | AT yeerlei studyonpointsourceefficiencyfunctionoflabr3cedetector AT nanhongjie studyonpointsourceefficiencyfunctionoflabr3cedetector AT shenchunxia studyonpointsourceefficiencyfunctionoflabr3cedetector AT xufeng studyonpointsourceefficiencyfunctionoflabr3cedetector AT shilisheng studyonpointsourceefficiencyfunctionoflabr3cedetector |