How to use mesh tally in MCNPX to calculate dose?

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Discussion Overview

The discussion focuses on the use of mesh tally in MCNPX for calculating dose, specifically in the context of setting up a cylindrical geometry and recording flux in smaller subdivisions of the cylinder. Participants seek clarification on the correct implementation of the mesh tally and related commands.

Discussion Character

  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant describes their setup involving a large cylinder and smaller cylinders, expressing uncertainty about the correct configuration for the mesh tally.
  • Another participant suggests that after the "CMESH1:n" line, the keyword DOSE and specific options must be included, referencing the MCNP6 manual.
  • A different participant notes that they are using MCNPX instead of MCNP6 and requests further details specific to MCNPX.
  • A later reply directs the user to the MCNPX 2.5.0 manual for relevant information and suggests searching for "TRACK-AVERAGED MESH TALLY" for additional guidance.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are differing references to manuals and versions of the software, indicating that multiple views and uncertainties remain regarding the correct approach.

Contextual Notes

There are limitations in the discussion regarding the specific version of MCNPX being used and the potential differences in functionality or commands between MCNP6 and MCNPX.

LeeGru
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Hello,guys,
I wonder how to use mesh tally to calculate dose.I set a cylinder，and set the material of the cylinder.Then I want to divide a cylinder into smaller cylinders in a direction perpendicular to the z-axis.And I need to record the flux of each mesh,use dedf card to get dose.
I have tried to write a little bit, please help to see if it is correct and what needs to be added?
The radius of big cylinder is 7cm,length of it is 10cm,the radius of little cylinder is 7cm,too,the length of little cylinder is 1mm.
TMESH
CMESH1:n
CORA1 0.0 7 99r
CORB1 0 100i 10
CORC1 0 179r 360
ENDMD
 
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Hi,
after "CMESH1:n" you must put the keyword DOSE and the options (int iu and fact)
see 3.3.5.24.2 of the MCNP6 version 1.0 manual,
 
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PSRB191921 said:
Hi,
after "CMESH1:n" you must put the keyword DOSE and the options (int iu and fact)
see 3.3.5.24.2 of the MCNP6 version 1.0 manual,
Thank you!However,I don't have MCNP6.I'm using MCNPX,and could you tell me more details?
Thank you very much!
 
Hi
in MCNPX 2.5.0 manual (LA-CP-05-0369) see 5.6.22.2
For an another version of MCNPX try to search "TRACK-AVERAGED MESH TALLY" in the manual
 

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