1. Interactive athena vertexing with Atlantis
Qiang Lu, Juergen Thomas, Peter Watkins (Birmingham)
Hans Drevermann (CERN)
Andrew Haas (Columbia)
Eric Jansen, Pieter Klok, Charles Timmermans (Nijmegen)
Simon Dean, Nikos Konstantinidis, Zdenek Maxa (UCL)
PAT meeting, software week, 07/12/05

2. Interactive atlantis/athena
Use case: “I see in my display three tracks, which look like coming from a sec. vertex. I want to fit a vertex with the athena vertexing tool”
This is now possible:
Atlantis connects to interactive athena via XMLRPC and takes over the command prompt
Atlantis transmits the indices of the tracks to fit, to the VxWrapperTool (athena AlgTool)
VxWrapperTool calls the athena vertexing tool and stores the sec. vertex to StoreGate
Atlantis requests the event data and gets the new vertex info (could be done automatically behind the scene)

3. Vertexing wrapper tool
Interface includes
fitAtlantisTracks( std::vector<int> tracks )
fitTracks( std::vector<const Trk::Track*> tracks )
JobOptions
VxToolName: the athena vertexing tool
TrackContName: the track container key in StoreGate
Needed for interactive analysis (independently of atlantis)

4. Interactive atlantis/athena (cont.)
Pick tracks
to make list
Interactive
athena
control
Vertexing
in athena

5. Useful tips/links
Atlantis is part of the ATLAS software release since and
atlantis / atlantis_beginner (full / basic functionality) available when you set up your athena environment
Documentation/tutorials etc on
JiveXML help on
General help/feedback/requests/complaints to