[Gate-users] Physics List

[Marina Vergara Díaz]

Dear Gaters,

I have several questions regarding the physics list builders used for  
simulations. Suppose I want to make an ideal PET camera simulation (no  
scatter, no attenuation). Before Gate 7 as I could add the physical  
procceses separately I could just disable the ones I am not interested  
on. What is the procedure now that we have to rely on the Geant4  
builders? There is a way to modify that list from Gate or do I have to  
stick with the previous method of giving each process instead of  
importing the list?

Another question is about the electromagnetic builders. For medical  
imaging in Gate documentation there is recommended emstandard_opt3 but  
from Geant4 they recomend emstandard_opt4 as is more  
low-energy-oriented. Some ideas? All the advises would be very welcome  
:)

Regards,
Marina.