1. FCC Software Status Readiness for FCC-ee Physics
Colin Bernet (IPNL)
FCC-ee Physics Coordination
17th of September, 2015

2. Outline General status ee physics with the FCC software core software
reconstruction
ee physics with the FCC software
Delphes integration
Sample production and management
Analysis tools
PAPAS (PArametrized PArticle Simulation)

3. Core software Can now move to ROOT 6 (Benedikt Hegner)
will happen soon
EDM unification in software stack (Benedikt Hegner)
edm code was duplicated:
external EDM package used in analysis tools
internal EDM module in FCCSW
now FCCSW uses the external EDM package
New applied fellow Joschka Lingemann
will work at 50% on the core software with Benedikt and C.B.

4. Reconstruction Fastjet interface : done Inner tracking (Julia Hrdinka)
reconstruction geometry almost in place
master thesis submitted on Monday!
working on tracking EDM
limited by core devs on EDM, e.g. support for fixed size arrays
Particle flow (C.B.)
first prototype in python working (c.f. PAPAS)
to be ported to C++ and put in FCCSW
Essential! Scientific associate for Alice Robson?

5. Delphes integration Project almost done:
Software integration : done (Michele de Gruttola)
Gaudi interface: (Zbynek Drasal)
Produces : EDM particles : at validation step
only Delphes output for now
Reads : HepMC Event : done
First set of cards for FCC-ee: next slide
In 1-2 weeks: could start sample production
need production tools!

6. Delphes cards
First set of cards ready (Patrizia Azzi, Michele de Gruttola, Gigi Rolandi, Delphes authors)
CMS card validated for lepton-based analyses (missing mass from leptons)
Olmo Cerri, Alessandro Podo (Scuola Normale students)
same results as
ILD card provided by Delphes authors
not sure the delphes « particle flow » algorithm is adapted to high-granularity calorimeters
probably ok for lepton-based reco

7. Sample production and management
Production tools
the next critical item
/eos/fcc set up - 20 TB
run FCCSW jobs on lxplus (at first, then grid)
Need generic tool (sample tracking for any kind of job)
Dirac? batch submission system
used by LHCb (Gaudi framework like us) and CLIC/ILC
urgently need a volunteer to adapt it to our needs
First pragmatic solution (next slide)

8. Simple sample production and management for FCC-hh (Clément Helsens)
batch scripts for lxplus, web pages
start from madgraph gridpacks or LHE (snowmass)

9. Analysis Tools
Standalone EDM package for analysis ready (Benedikt Hegner, C.B.)
also used in FCCSW
can produce EDM events in other software packages, e.g. standalone pythia
works on lxplus, ubuntu, macos
Analysis frameworks ready
python (heppy)
C++

10. Heppy Purpose: Python HEP framework Reads:
loop on events
make analysis ntuples or histos
Python HEP framework
like Gaudi, CMSSW, Athena, Marlin
Reads:
CMS, FCC, plain root
can adapt to other IO frameworks
Integrated batch submission system
1 command to start jobs for an analysis
1 command to harvest output
~50 users, mainly in CMS
Benefit from the power of python
code dev 10x faster than C++
similar performance
huge standard library
IT and science (~matlab)
can use ROOT tools
dynamic typing:
code reusable on different objects and in different experiments ~ easy template programming
 define generic analyses e.g. work on CMS and FCC at the same time
dynamic object definition
attach attributes to existing objects,
e.g. recJet.genJet = genJet

11. Heppy Process Configuration

12. PAPAS Can model e and mu model up to user any kind of calorimeters
standard or high-granularity (needs work)
Change cluster size, resolution geometry, …
simple tracker
acceptance, resolution, efficiency
detailed tracking effects can be implemented (e.g. displaced vertices)
e and mu model up to user

13. PAPAS Full particle flow algorithm prototype Produces particles
to be ported to C++
Produces particles
can prototype particle-based algorithms
tau ID
analysis
Delphes?
can it model high-granularity calorimeters?
produces pseudo-particles
naive particle-flow algo

14. Summary The FCCSW is ready for physics The situation is not great:
PAPAS (python): done
Delphes (C++): almost done
heppy can be used to analyse any kind of events
e.g. compare PAPAS and Delphes
The situation is not great:
not sure we have any user
sure we don’t have enough contributors
still only 2 experienced developers at the moment
lack of concrete link with physics groups for actual work (meetings don’t count)