Neutron dose measurement using USRBIN card

Dear FLUKA experts:
In my simulation, I’m using 218MeV proton to hit a 30 * 30 * 30cm^2 water phantom through a universal range shifter(PMMA) to get the neutron information. I want to know the neutron absorb dose (GeV/g) in the water phantom, how should i set the USRBIN card and the AUXSCORE card?

Best regards

Dear @Nicolas_Zhou,

Did you look at the example in the activation lecture?
You will also find several example of AUXSCORE usage on the forum.

Dear amario
Thank you for your guidance.

The best wishes,