Fatal Error The Surface Appears More Than Once in A Chain

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SUMMARY

The forum discussion addresses a fatal error encountered in a simulation involving surfaces in a chain, specifically "Fatal Error surface 2.1 appears more than once in a chain." The error arises when a surface is defined multiple times, such as in fills and cell descriptions, leading to warnings about deleted surfaces. The discussion emphasizes the need for high-resolution images of the error output for better diagnosis and notes that the VisEd tool, version X_ 22S, corresponds to X 2.6 from 2008, which may provide additional context for troubleshooting.

PREREQUISITES
  • Understanding of surface definitions in simulation software
  • Familiarity with fills and cell descriptions in modeling
  • Knowledge of VisEd tool functionality and error reporting
  • Experience with interpreting simulation output files
NEXT STEPS
  • Investigate the configuration of surfaces in your simulation to prevent duplicates
  • Learn how to interpret VisEd error messages effectively
  • Explore best practices for defining fills in simulation environments
  • Review documentation for VisEd X_ 22S and its error handling capabilities
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Simulation engineers, software developers working with modeling tools, and anyone troubleshooting surface-related errors in simulation outputs.

Ryan89
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TL;DR
Hi, can anyone help me? I am running the code for the container for the radioactive waste. I run on Vised, but suddenly it can't run due to a fatal error. I also have attached the error. Kindly hit me up if you can help to solve this issue. Thank you!
1657613963656.png
 
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Welcome to PF.

Your image is not high enough resolution to read the error. Can you upload a zoomed-in picture of the output lines in the upper left?
 
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It says:
Warning without Bremsstrahlung flux estimates will be low
Warning 39 surfaces were deleted as being the same as others
Fatal Error surface 2.1 appears more than once in a chain
Fatal Error surface 2.2 appears more than once in a chain
Fatal Error surface 2.3 appears more than once in a chain


I suppose repeated 39 times
 
How the heck were you able to read that?
 
berkeman said:
How the heck were you able to read that?
Could say lucky.
First time of many that with zoom that I could see what was there.
OP should come back and verify.
 
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The error looks like it's normally caused by the use of fills where a surface appears at more than one level, say defining a fill and also in the cell description of the fill universe.

The VisEd errors will match the output file, but the output file should have more of an explanation; which offending cells that surface is in and where they are in the chain. The offending surface 2 is composite which is why we have decimals. Fills are normally done into a bigger volume and the filled cell acts as a cookie cutter, filling with the same size would produce this because edges would be coincident. It's normally a warning. I have no idea why this is a fatal error.

Just as an aside, VisEd X_ 22S corresponds to X 2.6 - circa 2008.

If we get more info, maybe we can help solve this. If the OP has solved this, I would hope we're told.
 
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