Event display tutorial

Installing Atlantis

• Download the latest version of atlantis at: http://atlantis.web.cern.ch/atlantis/atlantis_10.0.0-20050408.zip.

• Unzip atlantis

unzip atlantis_10.0.0-20050408.zip

• Done!

Running Atlantis

• After the previous step you can now run atlantis by typing:

java -jar atlantis/atlantis.jar

• Or if you would like to look at event displays reconstructed with ATLFAST type:

java -jar atlantis/atlantis.jar Fast

• Atlantis versions require JAVA version 1.4 or higher to run.

• Atlantis will start-up with an example event display file with which you can play around a bit. You can select another event display by going to "File" followed by "Read event" in the Atlantis GUI window. Atlantis event displays are stored in the form of a .xml file. The next section will explain how to create your own event display files using JiveXML

Creating event display files with JiveXML

• Make sure you have the atlas 10.0.2 software environment set-up and initialized

• Obtain an AFS token at cern: klog <cern_userid>@cern.ch and type your CERN AFS password at the prompt.

• Check-out and compile the latest version of JiveXML

cmt co -r JiveXML-00-03-65 graphics/JiveXML
cd graphics/JiveXML/JiveXML-00-03-65/cmt
gmake

• Now I can tell you two ways to make some event display files!

• ATLFAST Let's take as an example the Generating_Higgs_To_4_Muons_at_NIKHEF tutorial! To create displays for these events just add the following lines in the code of joboptions_HiggsGeneration.py that was given in the tutorial.

include( "JiveXML/JiveXMLAtlfast_jobOptionFragment.py" )
EventData2XML = Algorithm( "EventData2XML" )
EventData2XML.FileNamePrefix = "HiggsTo4Muons_FAST"

• And then run it as usual:

athena.py joboptions_HiggsGeneration.py

• For each event that you reconstruct JiveXML will create a file .xml that will look like: HiggsTo4Muons_FAST_0_00000.xml (first event), HiggsTo4Muons_FAST_0_00001.xml (second event) etc. This files can now be opened in Atlantis (running in Fast mode!) as was explained previously.

• Full reconstruction with RecExCommon: If you are using RecExCommon for full reconstruction just add the following line in myTopOptions.py to create a JiveXML-file for each event you reconstruct

doJiveXML=True

• Still haven't figured how to set the FileNamePrefix of the files you generate this way. So now your files will have the default prefix and will look something like JiveXML_0_00000.xml ...