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Re: correction in emc bump splitting [message #7850 is a reply to message #7848] Fri, 06 February 2009 15:05 Go to previous messageGo to previous message
Bertram Kopf is currently offline  Bertram Kopf
Messages: 110
Registered: March 2006
continuous participant
 From: *ep1.ruhr-uni-bochum.de
Hi Irina and Dima,
just one additional remark:

Dima Melnychuk wrote on Fri, 06 February 2009 13:46

Hi Small correction to your post. From the data file gammagamma.root it looks like that some single gamma clusters are split into 2 bumps not in shashlyk but in forward endcap (slightly above 2 meters in Z direction) and there is no single event with clusters in shashlyk.

And it looks like that problem is related with what Bertram posted http://forum.gsi.de/index.php?t=rview&goto=7833#msg_7833



Due to the fact that only events with |cos(Theta*)|<0.6 are considered, the shashlyk detector doesn't contribute at all. The reconstructed gamma hists either the barrel calorimeter or the forward endcap. The backward endcap is also important in order to see low energetic gammas originated from the pi0 background.

Best regards,
Bertram.

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