Design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column
When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distil...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Shahabinejad, H. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015transfer abstract |
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| Schlagwörter: |
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| Umfang: |
10 |
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| Übergeordnetes Werk: |
Enthalten in: Time-dependent shape factors for fractured reservoir simulation: Effect of stress sensitivity in matrix system - Wang, Lu ELSEVIER, 2018, a journal of nuclear and radiation techniques and their applications in the physical, chemical, biological, medical, earth, planetary, environmental and engineering science, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:99 ; year:2015 ; pages:25-34 ; extent:10 |
| Links: |
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| DOI / URN: |
10.1016/j.apradiso.2015.02.008 |
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ELV034729429 |
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| 520 | |a When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. | ||
| 520 | |a When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. | ||
| 650 | 7 | |a Gamma scanning technique |2 Elsevier | |
| 650 | 7 | |a Panoramic collimator |2 Elsevier | |
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| 650 | 7 | |a Pinhole collimator |2 Elsevier | |
| 700 | 1 | |a Feghhi, S.A.H. |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Wang, Lu ELSEVIER |t Time-dependent shape factors for fractured reservoir simulation: Effect of stress sensitivity in matrix system |d 2018 |d a journal of nuclear and radiation techniques and their applications in the physical, chemical, biological, medical, earth, planetary, environmental and engineering science |g Amsterdam [u.a.] |w (DE-627)ELV001919369 |
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10.1016/j.apradiso.2015.02.008 doi GBVA2015017000009.pica (DE-627)ELV034729429 (ELSEVIER)S0969-8043(15)00046-9 DE-627 ger DE-627 rakwb eng 530 610 540 530 DE-600 610 DE-600 540 DE-600 660 VZ 38.51 bkl 57.36 bkl Shahabinejad, H. verfasserin aut Design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column 2015transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. Gamma scanning technique Elsevier Panoramic collimator Elsevier Quartic collimator Elsevier MCNP4C Elsevier Pinhole collimator Elsevier Feghhi, S.A.H. oth Enthalten in Elsevier Science Wang, Lu ELSEVIER Time-dependent shape factors for fractured reservoir simulation: Effect of stress sensitivity in matrix system 2018 a journal of nuclear and radiation techniques and their applications in the physical, chemical, biological, medical, earth, planetary, environmental and engineering science Amsterdam [u.a.] (DE-627)ELV001919369 volume:99 year:2015 pages:25-34 extent:10 https://doi.org/10.1016/j.apradiso.2015.02.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 38.51 Geologie fossiler Brennstoffe VZ 57.36 Erdölgewinnung Erdgasgewinnung VZ AR 99 2015 25-34 10 045F 530 |
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10.1016/j.apradiso.2015.02.008 doi GBVA2015017000009.pica (DE-627)ELV034729429 (ELSEVIER)S0969-8043(15)00046-9 DE-627 ger DE-627 rakwb eng 530 610 540 530 DE-600 610 DE-600 540 DE-600 660 VZ 38.51 bkl 57.36 bkl Shahabinejad, H. verfasserin aut Design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column 2015transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. Gamma scanning technique Elsevier Panoramic collimator Elsevier Quartic collimator Elsevier MCNP4C Elsevier Pinhole collimator Elsevier Feghhi, S.A.H. oth Enthalten in Elsevier Science Wang, Lu ELSEVIER Time-dependent shape factors for fractured reservoir simulation: Effect of stress sensitivity in matrix system 2018 a journal of nuclear and radiation techniques and their applications in the physical, chemical, biological, medical, earth, planetary, environmental and engineering science Amsterdam [u.a.] (DE-627)ELV001919369 volume:99 year:2015 pages:25-34 extent:10 https://doi.org/10.1016/j.apradiso.2015.02.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 38.51 Geologie fossiler Brennstoffe VZ 57.36 Erdölgewinnung Erdgasgewinnung VZ AR 99 2015 25-34 10 045F 530 |
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10.1016/j.apradiso.2015.02.008 doi GBVA2015017000009.pica (DE-627)ELV034729429 (ELSEVIER)S0969-8043(15)00046-9 DE-627 ger DE-627 rakwb eng 530 610 540 530 DE-600 610 DE-600 540 DE-600 660 VZ 38.51 bkl 57.36 bkl Shahabinejad, H. verfasserin aut Design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column 2015transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. Gamma scanning technique Elsevier Panoramic collimator Elsevier Quartic collimator Elsevier MCNP4C Elsevier Pinhole collimator Elsevier Feghhi, S.A.H. oth Enthalten in Elsevier Science Wang, Lu ELSEVIER Time-dependent shape factors for fractured reservoir simulation: Effect of stress sensitivity in matrix system 2018 a journal of nuclear and radiation techniques and their applications in the physical, chemical, biological, medical, earth, planetary, environmental and engineering science Amsterdam [u.a.] (DE-627)ELV001919369 volume:99 year:2015 pages:25-34 extent:10 https://doi.org/10.1016/j.apradiso.2015.02.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 38.51 Geologie fossiler Brennstoffe VZ 57.36 Erdölgewinnung Erdgasgewinnung VZ AR 99 2015 25-34 10 045F 530 |
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10.1016/j.apradiso.2015.02.008 doi GBVA2015017000009.pica (DE-627)ELV034729429 (ELSEVIER)S0969-8043(15)00046-9 DE-627 ger DE-627 rakwb eng 530 610 540 530 DE-600 610 DE-600 540 DE-600 660 VZ 38.51 bkl 57.36 bkl Shahabinejad, H. verfasserin aut Design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column 2015transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. Gamma scanning technique Elsevier Panoramic collimator Elsevier Quartic collimator Elsevier MCNP4C Elsevier Pinhole collimator Elsevier Feghhi, S.A.H. oth Enthalten in Elsevier Science Wang, Lu ELSEVIER Time-dependent shape factors for fractured reservoir simulation: Effect of stress sensitivity in matrix system 2018 a journal of nuclear and radiation techniques and their applications in the physical, chemical, biological, medical, earth, planetary, environmental and engineering science Amsterdam [u.a.] (DE-627)ELV001919369 volume:99 year:2015 pages:25-34 extent:10 https://doi.org/10.1016/j.apradiso.2015.02.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 38.51 Geologie fossiler Brennstoffe VZ 57.36 Erdölgewinnung Erdgasgewinnung VZ AR 99 2015 25-34 10 045F 530 |
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10.1016/j.apradiso.2015.02.008 doi GBVA2015017000009.pica (DE-627)ELV034729429 (ELSEVIER)S0969-8043(15)00046-9 DE-627 ger DE-627 rakwb eng 530 610 540 530 DE-600 610 DE-600 540 DE-600 660 VZ 38.51 bkl 57.36 bkl Shahabinejad, H. verfasserin aut Design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column 2015transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. Gamma scanning technique Elsevier Panoramic collimator Elsevier Quartic collimator Elsevier MCNP4C Elsevier Pinhole collimator Elsevier Feghhi, S.A.H. oth Enthalten in Elsevier Science Wang, Lu ELSEVIER Time-dependent shape factors for fractured reservoir simulation: Effect of stress sensitivity in matrix system 2018 a journal of nuclear and radiation techniques and their applications in the physical, chemical, biological, medical, earth, planetary, environmental and engineering science Amsterdam [u.a.] (DE-627)ELV001919369 volume:99 year:2015 pages:25-34 extent:10 https://doi.org/10.1016/j.apradiso.2015.02.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 38.51 Geologie fossiler Brennstoffe VZ 57.36 Erdölgewinnung Erdgasgewinnung VZ AR 99 2015 25-34 10 045F 530 |
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design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column |
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Design, optimization and performance of source and detector collimators for gamma-ray scanning of a lab-scale distillation column |
| abstract |
When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. |
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When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. |
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When using source and detector collimators for gamma ray column scanning, it is important to obtain an acceptable density profile quality. This paper consists of two main works. The first is devoted to describing the designs used to optimize the source and detector collimators for a lab-scale distillation column, and the second is devoted to investigating the effect of designed collimators on the quality of the density profiles obtained using the gamma scanning technique. Simulations using the MCNP4C Monte Carlo code were performed to model the collimators and obtain the density profiles. The source and detector collimator designs were developed for a cylindrical volume source with the energy of 0.662MeV and 1in.×1in. NaI, respectively. The pinhole and panoramic collimator designs and the pinhole and quartic collimator designs were considered for the source and the detector, respectively. The source container, with an opening angle of 60°, has the capability of substituting the collimator for high resolution, general and high sensitivity purposes. The pinhole collimator parameters for the source that were obtained were generally quite coarse and were 1.2cm in diameter and 4cm in length. Additionally, the detector pinhole collimator thickness and length obtained were 4cm and 5cm, respectively. Using the semi-quartic collimator for the detector, the weight of required lead was reduced by over 33% compared with the pinhole collimator. |
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