GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » EMC » Geant3 tracking cuts for the EMC
Geant3 tracking cuts for the EMC [message #9562] Fri, 16 October 2009 13:58 Go to previous message
Christian Hammann is currently offline  Christian Hammann
Messages: 24
Registered: July 2009
Location: Bonn
continuous participant

From: *cb.uni-bonn.de
Hi

I have noticed that the tracking thresholds for Geant3 are set to 1MeV by default, wich is probably to high. Also they are set globally, so it seems to me they are not tuned in any reasonable way for the EMC.

These cuts are set in gconfig/SetCuts.C. If I decrease the cut values to 100keV I get significant changes in the distribution of the energy in the cluster. For a 657 MeV photon the energy in the central crytal decreases from 542MeV for the 1MeV cut to 512MeV with the 100keV cut. The number of crystals in the cluster also increases from 13.9 to 16.8.

Of course the filesize and computing time increase with the lower cuts (about a factor 2 or so).

Are there some tuned cuts available? Do I have to load an additional file to set proper cut values?

Best regards

Christian


Christian Hammann
Universität Bonn
Helmholz-Institut für Strahlen und Kernphysik
Nußallee 14-16
53115 Bonn
Tel: +49 228 733895
Fax: +49 228 732505
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Geometry of EMC Barrel Crystal
Next Topic: Geometry converter for EMC crystals
Goto Forum:
  


Current Time: Mon May 23 22:29:29 CEST 2022

Total time taken to generate the page: 0.01162 seconds