1. Why would one consider it? Pros and cons
Athena for combined TB?
Why would one consider it?
Pros and cons

2. Possible Advantages Learn some new tools like C++, Athena, databases…
Reconstruction code “reusuable” later for “real” data taking; bigger community can profit
Fortran is about to “die”. Thus, motivation to develop code in Fortran low
Use of code which already exists or could be easily modified
Profit from code development to do TB analysis for EM modules or from ROD package
“current” reconstruction code benefits from using/adapting it in more realistic environment

3. Negative Aspects Development more time-consuming
Most of us have to learn first C++, Athena…
Still lots of changes in Athena framework, you have to keep track of
Fortran code for HEC analysis ready, so not much need to change this part for combined test
Work in new framework difficult due to missing documentation, changes in Gaudi/Athena, developing event data model
Accept working in ATLAS environment
keep code in “running” status
Obey coding standards
interaction with larger community

4. Decision Decision on which framework to use depends crucially on
Time-scale of project
Manpower
Interest of people actually writing the code
Interest of people doing the analysis later on (to a lesser extend)
In the beginning it’s hard to get used to all this new stuff & framework unstable
either you work full-time or in an unefficient way

5. Comments/Suggestions
Once TB converter available
Try using already existing code e.g. LArHit
Produce cells using CaloCell, LArCell
Try keeping the reconstruction flow and put in your own code for corrections
Speak to reconstruction people if current code is not “flexible” enough
If you write “new” code try to keep similar naming conventions for algorithms, variables as available in LAr code  makes life easier for newcomers
Probably quite some algorithms/methods can be easily translated from Fortran to C/C++, but no use doing “ftoc” because of framework dependencies. If you prefer Fortran no use switching to Athena