@hschindl I’m using Tracksrim in garfield++ to simulate detector response. When Li7 particles propagate in the He/N2 gas volume, I noticed that clusters.back().kinetic always leaves 5–30 keV kinetic energy that is not converted into electron clusters. Is there a setting (physics list, cuts, ion parameters) I need to adjust?
detector2.cc (3.8 KB)
Sorry for the unclear example in my previous message. I tested two initial kinetic energies.
For 20 keV Li7:
Summary
Initial Li7 kinetic energy: 2.000000e+04 eV
Total energy converted into clusters: 8.645992e+03 eV
Total number of electron-ion pairs: 205
Mean cluster energy per electron-ion pair: 4.217557e+01 eV/pair
Last cluster position z: 6.001000e-01 cm
Last cluster kinetic energy: 2.000000e+04 eV
Last cluster kinetic energy minus last cluster.energy: 1.135401e+04 eV
For 60 keV Li7:
Summary
Initial Li7 kinetic energy: 6.000000e+04 eV
Total energy converted into clusters: 4.284853e+04 eV
Total number of electron-ion pairs: 1056
Mean cluster energy per electron-ion pair: 4.057626e+01 eV/pair
Last cluster position z: 6.568598e-01 cm
Last cluster kinetic energy: 1.706826e+04 eV
Last cluster kinetic energy minus last cluster.energy: 1.024627e+04 eV
There is always some residual kinetic energy that is not converted into electron-ion clusters. Is this expected behavior related to the way TrackSrim handles the end of the ion track?
Thank you very much for your help.@hschindl @Piet