json-outputs-from-edm4hep

JSON outputs from all EDM4HEP releases, generated from FCC Tutorials:

Table of EDM4HEP releases and their respective schema

Release	edm4hep	schema
2023-11-23	0.10.2	1
2024-03-10	0.10.5	1
2024-04-12	0.10.5	1
2024-10-03	0.99.1	2
2024-10-28	0.99.1	2
2024-11-28	0.99.1	2
2025-01-28	0.99.1	2
2025-05-29	0.99.2	3
2026-02-01	1.0.0	6
2026-04-08	1.0.0	6

Nightly versions and their respective schema

• edm4hep 0.9.0: schema 1
• edm4hep 0.10.0: schema 1
• edm4hep 0.10.1: schema 1
• edm4hep 0.10.3: schema 1
• edm4hep 0.10.4: schema 1
• edm4hep 0.10.99: schema 1
• edm4hep 0.99.0: schema 2

List of collection types and their respective names

edm4hep::CalorimeterHitCollection

• CalorimeterHits.

edm4hep::SimCalorimeterHitCollection

• ECalBarrelCollection
• ECalEndcapCollection
• HCalBarrelCollection
• HCalEndcapCollection
• HCalRingCollection
• LumiCalCollection
• YokeBarrelCollection
• YokeEndcapCollection

edm4hep::ClusterCollection

• EFlowNeutralHadron
• EFlowPhoton
• EFlowNeutralHadron.

edm4hep::ReconstructedParticleCollection

• Electron
• Jet
• Muon
• Photon
• ReconstructedParticles

edm4hep::TrackerHit3DCollection

• TrackerHits

edm4hep::SimTrackerHitCollection

• InnerTrackerBarrelCollection
• InnerTrackerEndcapCollection
• OuterTrackerBarrelCollection
• OuterTrackerEndcapCollection
• VertexBarrelCollection
• VertexEndcapCollection

edm4hep::TrackCollection

• EFlowTrack

edm4hep::VertexCollection

• BuildUpVertices
• BuildUpVertices_V0
• PandoraStartVertices
• PrimaryVertices
• RefinedVertexJets_vtx
• RefinedVertices

File generation

1.0. Setup a FCC software stack release

# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2023-11-23
# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2024-03-10
# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2024-04-12
# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2024-10-03
# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2024-10-28
# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2024-11-28
# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2025-01-28
# source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2025-05-29
source /cvmfs/sw.hsf.org/key4hep/setup.sh -r 2026-02-01

Event simulation

From FCC: Getting started with simulating events in Delphes.

# e+ e- -> ZH -> Z and H to anything
# e+ e- -> ZZ -> Z to anything
# e+ e- -> WW -> W to anything

2.1 Download official pythia cards for the various processes

wget https://raw.githubusercontent.com/HEP-FCC/FCC-config/winter2023/FCCee/Generator/Pythia8/p8_ee_ZH_ecm240.cmd
wget https://raw.githubusercontent.com/HEP-FCC/FCC-config/winter2023/FCCee/Generator/Pythia8/p8_ee_ZZ_ecm240.cmd
wget https://raw.githubusercontent.com/HEP-FCC/FCC-config/winter2023/FCCee/Generator/Pythia8/p8_ee_WW_ecm240.cmd

wget https://raw.githubusercontent.com/HEP-FCC/FCC-config/winter2023/FCCee/Delphes/card_IDEA.tcl
wget https://raw.githubusercontent.com/HEP-FCC/FCC-config/winter2023/FCCee/Delphes/edm4hep_IDEA.tcl

2.2. Simulate events with DelphesEDM4Hep

DelphesPythia8_EDM4HEP card_IDEA.tcl edm4hep_IDEA.tcl p8_ee_ZH_ecm240.cmd p8_ee_ZH_ecm240_edm4hep.root
DelphesPythia8_EDM4HEP card_IDEA.tcl edm4hep_IDEA.tcl p8_ee_ZZ_ecm240.cmd p8_ee_ZZ_ecm240_edm4hep.root
DelphesPythia8_EDM4HEP card_IDEA.tcl edm4hep_IDEA.tcl p8_ee_WW_ecm240.cmd p8_ee_WW_ecm240_edm4hep.root

2.3. Convert the first 20 events from root files to json

edm4hep2json -n 20 p8_ee_ZH_ecm240_edm4hep.root
edm4hep2json -n 20 p8_ee_ZZ_ecm240_edm4hep.root
edm4hep2json -n 20 p8_ee_WW_ecm240_edm4hep.root

### Full simulation

From FCC-ee Full Sim General Overview.

3.1. Clone repo

git clone https://github.com/key4hep/CLDConfig.git
cd CLDConfig/CLDConfig

3.2  Retrieve Z(mumu)H(X) MC generator events

# e⁺e⁻ → Z(μμ)H(inclusive)

wget https://fccsw.web.cern.ch/fccsw/tutorials/MIT2024/wzp6_ee_mumuH_ecm240_GEN.stdhep.gz
gunzip wzp6_ee_mumuH_ecm240_GEN.stdhep.gz

3.3. Run the Geant4 simulation (1 event)

ddsim -I wzp6_ee_mumuH_ecm240_GEN.stdhep -N 1 -O wzp6_ee_mumuH_ecm240_CLD_SIM.root --compactFile $K4GEO/FCCee/CLD/compact/CLD_o2_v07/CLD_o2_v07.xml --steeringFile cld_steer.py

3.4 Running CLD reconstruction (1 event)

sed -i "s/DEBUG/INFO/" CLDReconstruction.py
k4run CLDReconstruction.py --inputFiles wzp6_ee_mumuH_ecm240_CLD_SIM.root --outputBasename wzp6_ee_mumuH_ecm240_CLD --num-events -1

3.5. Convert from root files to json

edm4hep2json wzp6_ee_mumuH_ecm240_CLD_REC.edm4hep.root
edm4hep2json wzp6_ee_mumuH_ecm240_CLD_SIM.root

Types

edm4hep::Vertex: edm4hep::Track: edm4hep::TrackerHit: edm4hep::TrackerHit3D: edm4hep::TrackerHitPlane: edm4hep::SenseWireHit edm4hep::SimTrackerHit: edm4hep::CalorimeterHit: edm4hep::SimCalorimeterHit: edm4hep::Cluster: edm4hep::ReconstructedParticle: