GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Particle Identification » Condition for tracks to hit FWD EMC
Condition for tracks to hit FWD EMC [message #19678] Thu, 06 October 2016 15:58 Go to next message
pandachris is currently offline  pandachris
Messages: 1
Registered: August 2015
occasional visitor
From: *ikp.kfa-juelich.de
Dear all,

in the file PndPidEmcInfo.cxx, there is a condition saying
	if ((emcModule == 3) && (helix->GetZ() < 165.))
	continue; // consider tracks only from last gem plane for FWD

This basically ensures that tracks without a hit in the last GEM plane are not considered to constitute pidChargedCandidates.
However, even if tracks have only STT/MVD hits, they can still pass between the gap of GEM and EMC barrel and produce a cluster in the EMC forward detector. Therefore I would consider this condition redundant.

Is there any reason for this that I do not see or can it be removed?

Thanks and all best,
Chris
Re: Condition for tracks to hit FWD EMC [message #19683 is a reply to message #19678] Thu, 06 October 2016 16:03 Go to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *to.infn.it
Quote:
This basically ensures that tracks without a hit in the last GEM plane are not considered to constitute pidChargedCandidates.


This ensures that tracks without a hit in the last GEM plane are not correlated to the FWD EMC, saving a lot of CPU time. But the pidChargedCandidate is created.
Can you please evaluate (DPM?) how many tracks w/o hits in the last GEM plane are really hitting the FWD EMC?
Previous Topic: Forward TOF particle identification
Next Topic: Error in PndAnaPidCombiner::Apply
Goto Forum:
  


Current Time: Tue Aug 04 07:22:32 CEST 2020

Total time taken to generate the page: 0.02350 seconds