Dear All

I have a very simple problem. I am trying to calculate the absorbed dose in POM cylinder when irradiated with gamma rays. The input file

dose_POM.inp (1.7 KB)

is attached. The problem is the discrepancey between when I score the Dose using Region option and when I use the R-phi-Z binning. Both in USRBIN scoring. The value that I get from USRBIN+ Region divided by the volume should be the value I get in USRBIN + R-phi-Z mesh. But I am getting twice. as if R-phi-Z volume is twice that of the the REGION volume.

I apologise if there is something very trivial that I am overlooking.

sincerely

saurabh

Dear Saurabh,

You are using the `R-Phi-|Z|`

binning, which is symmetric to the Z axis, effectively doubling the scoring volume. You need to select the `R-Phi-Z`

binning to get the expected result.

Cheers,

David

1 Like