Hi,
Thank you so much for taking the time to look into this.
I did exactly as you said, except that I replaced
/testhadr/det/setIsotopeMat Cl37 17 37 2.48 g/cm3
with
/testhadr/det/setIsotopeMat Ni60 28 60 2.48 g/cm3
since I saw in a previous topic (Question in neutron capture (Gd155(n, gamma)Gd156) reaction - #6 by John_McFee) that NNDC data and Geant4 simulation were found to match for Ni60 activation.
However, using the example Hadr03 instead of Activation does not seem to work any better…
If you have other ideas, they are very much welcome.
Thanks again for your time!