Best shape for photon tracking software

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SUMMARY

The optimal boundary shape for tracking photons emitted from a cesium 137 disk source to a point detector 50 cm away is crucial for minimizing computational power in simulations. The Monte Carlo code, specifically MCNP with a "PTRAC" card, is recommended for this purpose. Due to the nature of Compton scattering, a cone shape is not suitable as it does not adequately account for the scattering of photons. The disk source is positioned in the yz plane, with the point detector aligned along the x-axis.

PREREQUISITES
  • Understanding of Monte Carlo simulation techniques
  • Familiarity with MCNP software and its "PTRAC" card functionality
  • Knowledge of photon scattering phenomena, particularly Compton scattering
  • Basic geometry related to boundary shapes in simulations
NEXT STEPS
  • Research advanced techniques in Monte Carlo simulations for photon tracking
  • Explore the capabilities of MCNP and how to effectively use the "PTRAC" card
  • Study the effects of Compton scattering on photon trajectories
  • Investigate alternative boundary shapes for photon tracking in simulations
USEFUL FOR

Researchers and developers in the fields of particle physics, medical physics, and computational modeling who are focused on optimizing photon tracking simulations.

sammy g
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I need to determine the best boundary shape for tracking photons being emitted from a cesium 137 DISK SOURCE that would be hitting a POINT DETECTOR 50 cm away. The cesium is not contained by anything, it is only traveling through air. What I mean by boundary shape is: the software tracks individual simulated photons (about 10 million of them) so in order to minimize computing power, I have to create a boundary to stop the tracking if that photon isn't going to hit the detector. I need to account for scattering so a cone is not optimal according to my professor. I am aware that incident photons from compton scattering may veer off in different directions. you can imagine the disk source to be in the yz plane and the point being along the x axis, completely perpendicular to the source. Sorry if I'm posting in the wrong forum or anything, this is my first time posting.
 
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Hi,
You can do that with Monte-Carlo code. For example MCNP with a "PTRAC" card,
PSR
 

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