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Demonstration of EGS5

Japan-Korea Joint Summer School on Radiation Science and Engineering Kitakyusyu International Conference Center (15 Jul 2009). Demonstration of EGS5. (KEK) Y. Namito, Y. Kirihara, M. Hagiwara, H. Iwase Last modified on 2009.7.9. Subject 1: Attenuation of b ray.

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Demonstration of EGS5

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  1. Japan-Korea Joint Summer School on Radiation Science and Engineering Kitakyusyu International Conference Center (15 Jul 2009) Demonstration of EGS5 (KEK) Y. Namito, Y. Kirihara, M. Hagiwara, H. Iwase Last modified on 2009.7.9

  2. Subject 1: Attenuation of b ray • Are b rays stopped in material? or goes through? • What happens in the Aluminum plate? Source 90Sr-90Y b ray Max energy 2.3 MeV Aluminum Plate → Run EGS5 and observe computer graphics

  3. 2.3 MeV b ray→Al 1cm Al Air Air b ray source • 50 incident→All stopped • 3 reflected • 8 X rays (yellow line)

  4. 2.3 MeV b ray→Al 0.25cm Al Air Air b ray source • 50 incident→27 goes through

  5. Number of transit b ray Max Range

  6. Procedure for PC • Extract ucshield.* and shield.dat from isord5.tar.gz • Open command prompt window • Run egs5 by type in followings; • C:\g77\g77setup • cd egs5/userdir • egs5run ucshield • Respond to prompt • Key in Material number: 1 • Do you want to produce… : 0 • Key in particle type: -1 • Key in particle kinetic energy in MeV : 2.3 • Key in slab thickness in cm : 1.0 • Run Cgview • File -> Read geometry -> (Move to working folder) -> Select egs5job.pic

  7. Subject 2 Attenuation of g ray • Are g rays stopped in material or goes through? • What happens in the material? Source 60Co g ray Average energy 1.25 MeV Aluminum Plate → Run EGS5 and observe computer graphics

  8. 1.25 MeV g ray→Al 5cm g ray source Al Air Air Reflection→ Primary g ←Scattered g • Number of incident : 50 • Transit：Primary 24, Scattered 13; Reflection 2

  9. 1.25 MeV g ray→Al 10cm Al Air Air g ray source Transit : Primary 11, Scattered 8; Reflection 4

  10. 1.25 MeV g ray→Al 20cm Air Al Air Transit : Primary 4, Scattered 3; Reflection 1 g ray source

  11. Number of transit g ray

  12. Procedure for PC • Etraxt ucshield.* and shield.dat from isord5.tar.gz • Open command prompt window • Run egs5 by type in followings; • C:\g77\g77setup • cd egs5/userdir • egs5run ucshield • Respond to prompt • Key in Material number: 1 • Do you want to produce… : 0 • Key in particle type: 0 • Key in particle kinetic energy in MeV : 1.0 • Key in slab thickness in cm : 1.0 • Run Cgview • File -> Read geometry -> (Move to working folder) -> Select egs5job.pic

  13. Subject 3 tutor codes • Run tutor1 code (also other tutor code) • Compare output with manual • Relation of output and corresponding code • Investigate specification of source particle Electron of 20 MeV What comes out here? Tantalum Plate (1 mm)

  14. Procedure for PC • Copy tutor# from egs5 folder to working folder • # = 1,2,3,5,6,7 • Open command prompt window • Run egs5 by type in followings; • C:\g77\g77setup • cd egs5/userdir • egs5run tutor# • Compare output with tutor#.out • Read tutor#.f • Lines for output particle information • Lines for source particle

  15. Subject 4 ucbend.f Electron transport in magnetic field

  16. Procedure for PC • Extract ucbend.* from isord5.tar.gz . • Run egs5 by type in followings; • C:\g77\g77setup • cd egs5/userdir • egs5run ucbend • Run Cgview • File -> Read geometry -> (Move to working folder) -> Select egs5job.pic

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