USRBIN scoring residual nucleus within lattice units

Scoring
1

Dear FLUKA experts,

I am trying to model a simple problem using lattice cards for repeated structures, and encountered a problem when scoring residual nucleus.

Referring to Lecture 2024 beginner course: 2024 beginner course - CERN (2-2024年12月6日): Geometry II · Indico, I used USRBIN to scoring the residual nucleus within lattice units.

Using USRBIN’s region point + AUXSCORE didn’t get a result, but using USRBIN’s X-Y-Z point + AUXSCORE did.

I mainly want to know if it is possible to use the USRBIN region point + AUXSCORE to score residual nuclei. Please let me know about possible solutions to this issue. Following are my input files:

latticeS.flair (3.3 KB)

With regards,

Ding

4

Hello again Ding,

I am looking into this and will let you know soon.

Stefano

5

Hello Ding,

there are two unrelated (yet critical) issues with your input:

  1. you are defining the XYZ-point USRBIN already in the transformed coordinates
  2. I think you mistyped the detector being modified by the last ROTPRBIN (r2res instead of r2res3) These two mistakes cancel each other because your co-odinates are already specified in the transformed frame, and you are not currently applying transformations

There are two more severe issues:

  1. when scoring on a lattice you need to score using special point, not just region point. See this related post (Scoring within lattice units).
  2. unfortunately lattice scoring cannot be combined with residual nuclei or activity scoring, this is something that might change in a future version.

My suggestions is that you use properly transformed point-cartesian scoring (the XYZ-point score you have, with the changes I pointed out). I hope this is of help, and let me know if I can help with anything else.

Stefano

6

Thank you very much for your guidance.
With Regards,
Ding