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None storing & retrieving physics tables 

Keywords: detector description, physics tables retrival
Forum: Particles
Date: 23 Sep, 2003
From: Martin Liendl <Martin Liendl>

Hi,

storing & retrieving of physics tables and region/cuts-settings requires 
to have the same detector setup for storing and reading. 

From the user point of view, I think that I describe the same detector 
irrespective of the ordering of the creation of Materials, LogicalVolumes,  
Regions, ... . But, as it seems, G4 requires to have EXACTLY the same 
call sequence in creating G4-objects in order to store & retrieve physics
tables correctly. This is somewhat odd, as the sequence in which objects
are created sometimes can't be predicted. Depending on the 
implementation of the G4VUserDetectorConstruction the sequence in which 
G4-object are created could vary allthough the same detector is being 
described.

Example: 
It should not matter, if I build the Tracker before the 
ElectromagneticCalorimeter or vice versa.

Are there any plans to change the current G4-behavior?

Thanks & cheers,
 Martin

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