Hi,
I defined in the method AddParticles of my class
inheriting from TVirtualMCApplication some ions through:
gMC->DefineIons("He4",2, 4, 2, 0, 3.75309);
gMC->DefineIons("Li6",3, 6, 3,0 , 5.62963);
gMC->DefineIons("B10",5, 10, 5,0 , 9.38272);
and so on.
Then I switched off the hadrons interaction in geant3
by selecting the FLUKA generator.
In my application I have a calorimeter
preceeded by a carbon target acting as a pre-shower .
I noticed that when I run with protons or nuclei as D, He up to Li6
the hadronic cascades occur with a rate according to the total number of
interaction
lengths of my detector.
But with heavier nuclei (starting from B10) the hadronic interactions
seem to be switched off
and nuclei pass through the calorimeter as minimum ionizing particles.
The situation is even worse by using the geisha generator. Infact in
this case all the nuclei behave as mips.
Which is the reason of these behaviours ?
Is it due to some limitation of the fluka/geisha generator inside
geant3?
Or do I have to do something else to run properly with ions?
Thanks.
Best regards
Paolo
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Paolo Maestro
Universita' di Siena-INFN
Phone ++39-050-2214349
Fax ++39-050-2214317
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