[gate-users] trapezoid

Eva Nerina Gimenez Navarro nerina at ific.uv.es
Tue Dec 13 19:29:27 CET 2005

I am trying to define a cylindricalPET by using "trapezoids" to define 
the crystal. I am not sure if this is possible. When I have run the 
geommetry the following message appears: 

BooleanProcessor::execute : unknown faces !!!
BooleanProcessor: boolean operation failed

I've checked in the GateUser's Talk and found that this problem was 
already reported, but there was not reply.

Despite the fact of getting the expected geometry,  other problem that 
I find is that it does not recognised the following commands:

***** COMMAND NOT FOUND < /gate/systems/cylindricalPET/crystal/attach 
***** COMMAND NOT FOUND < /gate/systems/cylindricalPET/layer0/attach 
***** COMMAND NOT FOUND < /gate/LSO/attachCrystalSD> *****

And therefore I am unable to get the interaction of the particle with 
the system. May be someone can let me know more about this topic and 
if it is possible to use the "trapezoid" definition as I want to do. 

Best regards, 


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