Using KANGA(ROO) - Kind ANd Gentle Analysis (without Relying On Objectivity)

If you wish to use KANGA then a useful resource is the Kanga Tools and Data hypernews group. All the reconstructed data events in kanga format are currently being copied from SLAC to RAL with an automated procedure. The same procedure is used in order to have also locally a copy of the BaBar data and MC events that are of interest for the analyses on going here. These kanga files are stored in the directories

> /datastore/kanga/EventStore/ and /datastore2/kanga/EventStore/

therefore, moving your analysis from RAL to our computers you only have to substitute $env(BFROOT) with /datastore or /datastore2 in the path written in the .tcl file.
The events available in kanga format (SP2 and SP3) are listed here. To see the directory tree of the available files just type

> kangaruns -r /datastore(2)/kanga/EventStore/groups/SP(isPhysicsEvents)/

where SP/ is the directory that contains the MC events and isPhysicsEvents/ that containing the data events. The 'kangaruns' script that runs here has been modified in order to be used to search for specific runs or events types on kanga files stored on the RAID disks.
You can create directly a .tcl file by using the option -t:

> kangaruns -r  /datastore(2)/kanga/EventStore/groups/SP/00XX/< run-number > -t > myfile.tcl

NOTE: if you are running on kanga files processed with a release older than 8.6.2d (you can see it in the directory path of the kanga file your running on), you have to use kangaruns_Old, instead of kangaruns.

To run on kanga files you need to create a soft link in your workdir directory which points to /datastore/kanga, i.e.:

> cd workdir
> ln -s /datastore/kanga/ kanga/

The reason for this is because to run on kanga events you need to source the conditioned DB for kanga (SP3Conditions.root) and it is automatically sourced in the .tcl file (default is kanga.tcl in BetaUser) with the following call:

 RootConditionsFile set kanga/CondDB/SP3Conditions.root

Since the automatic procedure to copy kanga files from RAL updates all the directories that belong to the main directory /datastore/kanga/EventStore/, if you want to dump you kanga data files in the shared area, use the directory: /datastore/kanga/Users.

You are now ready to continue with your analysis, just as if you were working at SLAC or RAL. Good luck!