= Detector Understanding with First Data =
=== DESY, Hamburg, 29/06/09 - 03/07/09 ===

[[https://indico.desy.de/conferenceTimeTable.py?confId=1811 | Agenda]]


==== Jets ====
[[https://twiki.cern.ch/twiki/bin/view/AtlasProtected/TutorialsDU09Jet | Talk by Sven Menke]]

In interactive python session: help on any ATLAS object is available, e.g.
{{{
help(ROOT.Jets)
}}}
Questions:

 * What about calibration of AntiKt etc.? - Have to distiguish between H1 and Local Calibration: H1 cal has cone calibration (does not make much of a difference and then algo specific cal). Local is independent anyway.
 * Rerun jetFinder only on ESD or also on AOD?
 * Which jets will be calibrated first?
 * Recommendation for overlap removal procedure from jet group?
 * Difference jet tools and keys?

==== Inner Detector ====
correct checkout command is:
{{{
svn co $SVNROOT/Tracking/TrkValidation/TrkValTools/trunk/root/ResidualsAndPulls $TestArea/Tracking/TrkValidation/TrkValTools/ResidualsAndPulls
}}}
correct root version:
{{{
export ROOTSYS=/afs/cern.ch/sw/lcg/app/releases/ROOT/5.22.00c/slc4_amd64_gcc34/root
}}}

==== Electron Systematics ====
To estimate electron reco uncertainty, use figures from egamma group in their Zee tag&probe analysis. They will probably publish 3d (pt,eta,dist to closest jet) efficiencies and uncertainties.