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[dounia84 at aol.com]

 Hello,

I am trying to model a micropet scanner.I was wondering how one can get the number of true events (prompts - random - scatter).  I am using root v5.20 and my Browser displays three classes : 
Coincidences, Singles and Hits. Does coincidence class refer to trues events? Or prompts? What is the difference between Single and Hits?
I am missing some understanding...
If anyone could help,



-- 
Dounia Taleb
Imagerie medicale experimentale - Département de physique
Université de Liège - Institut de Physique, B5
B-4000 Liège 1 (Sart-Tilman) - Belgique
Tel: +32-4-3663152