Assistance Needed with OpenMC to Calculate Air Kerma and Mean Glandular Dose for Breast Voxel Phantom

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Discussion Overview

The discussion centers around using OpenMC to calculate air kerma and mean glandular dose for a breast voxel phantom. Participants are seeking guidance on the necessary steps and technical details involved in the process.

Discussion Character

  • Technical explanation, Homework-related

Main Points Raised

  • One participant, a radiation protection student, requests assistance with OpenMC, specifically for calculating air kerma and mean glandular dose.
  • Another participant asks for more details about the student's progress, inquiring whether the geometry and source have been created.
  • The student confirms that the phantom and geometry are ready and that the source has been defined as photons with an energy of 30 keV, but they are uncertain about building the mesh.
  • A later reply explains the process of creating the mesh in two steps and mentions the use of different mesh types available in OpenMC, such as RegularMesh and CylindricalMesh, providing a brief overview of the required inputs for the cylindrical mesh.
  • The reply also references a tutorial for using the RegularMesh function.

Areas of Agreement / Disagreement

Participants have not reached a consensus, as the initial student inquiry remains unresolved and further clarification is sought.

Contextual Notes

There are limitations regarding the specific steps and methods for building the mesh, as well as the dependencies on the definitions of the mesh types and functions in OpenMC.

REMS R
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Hello everyone

I am a radiation protection student and need assistance with OpenMC. I have a breast voxel phantom and I want to calculate the air kerma to determine the mean glandular dose. I'm not sure what steps to follow to achieve this. Could someone guide me through the process?
 
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Hello,

Could you add more details? what have you done up to now? Have you created the geometry and the source?
 
mark_bose said:
Hello,

Could you add more details? what have you done up to now? Have you created the geometry and the source?
The phantom and geometry are ready, and I have defined the source as photons with an energy of 30 keV. However, I am stuck at the step of building the mesh.
 
The creation of the mesh is done in two steps: first you create the mesh itself than you create the mesh filter using the MeshFilter function.

OpenMC offers various options for the mesh (RegularMesh, CylindricalMesh...).
For example here you can find the function for cylindrical mesh. It needs as input the radial, axial and angular grids. that are provided as list or arrays.
Once you have created the mesh you need to create a mesh filter.

In this tutorial they show how to use the RegularMesh function
 
  • Informative
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