| Update of DIRC barrel code [message #4589] | 
			Thu, 28 June 2007 21:06  | 
		 
		
			
				
				
				
					
						  
						Annalisa Cecchi
						 Messages: 17 Registered: June 2006  Location: Ferrara
						
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					occasional visitor  | 
					  From: *gsi.de
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		Dear all,  
with the revision 1028 you can get an important upgrade of the DIRC barrel package. 
Many thing are changed: 
 
- Geometry: the bar of the DIRC are 2.6 m long as provided by the Panda integration; every side of the barrel is now composed by 8 slabs. Every side contains a mirror in an end and a sort of screen in the other end. 
 
- ProcessHits: at the moment you register the hits only inside this logical screen at the end of the bars.  
 
- Materials: in media_pnd.geo I added some new materials, with particular Cerenkov properties. I needed to do it in order to have the production of Cerenkov cone, and the propagation/reflections of photons long over the slabs. 
 
 
Cheers, 
 
Annalisa
		
		
		
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