simulations

These files must be renamed and added into the MC/CustomGenerators/PWGLF/ directory of AliDPG:

• GeneratorCustom.C

These files must be added into the EVGEN/ directory of AliRoot:

• AliGenSexaquarkReaction.cxx
• AliGenSexaquarkReaction.h

Additionally, the class must also be added to the EVGEN/CMakeLists.txt and EVGEN/EVGENLinkDef.h files.

Local Production

Once the files are added into AliRoot and AliDPG, and these packages (besides AliPhysics) are properly built and loaded, you need to execute this command to send a small production.

(Note: it's necessary to use the OCDBsim.root and OCDBrec.root callibration files that correspond to the run number you want, as described below in the First successful attempt)

$ALIDPG_ROOT/bin/aliroot_dpgsim.sh --run <run_number> --mode sim,rec,qa --uid 1 --nevents <n_events> --generator PWGLF:Hijing_Sexaquark:<reaction_channel><sexaquark_mass> --simulation SimulationDefaultIonTail --system Pb-Pb --detector NoAD

• <run_number> : run number
• <n_events> : number of events
• <reaction_channel> : reaction channel, could be
  • A : AntiSexaquark + Neutron -> AntiLambda, K0
  • B : AntiSexaquark + Neutron -> AntiLambda, K0, Pi-, Pi+
  • C : AntiSexaquark + Neutron -> AntiProton, K0, K0, Pi+
  • D : AntiSexaquark + Proton -> AntiLambda, K+
  • E : AntiSexaquark + Proton -> AntiLambda, K+, Pi-, Pi+
  • F : AntiSexaquark + Proton -> AntiProton, K+, K0, Pi+
  • G : AntiSexaquark + Neutron -> Xi+, Pi-
  • H : AntiSexaquark + Proton -> AntiProton, K+, K+, Pi0
• <sexaquark_mass> : hypothesized mass of the sexaquark, could go from 1.73 to 2.01 (in GeV/c^2)

Testing

• Testing build on lxplus

  1. Log into lxplus.cern.ch
  2. Download OCDB file
     • load recent software (for example, alienv enter O2Physics/daily-20231205-0100-1)
     • download via alien.py cp alien:///alice/sim/2020/LHC20e3/OCDB/297595/OCDBsim.root file://OCDBsim.root
     • download via alien.py cp alien:///alice/sim/2020/LHC20e3/OCDB/297595/OCDBrec.root file://OCDBrec.root
     • get out of env.
  3. Enter the newly released environment:

     alienv enter AliPhysics/v5-09-54r-01_O2-1,AliDPG/prod-202311-01-1,jemalloc/latest
     

  4. Execute

     $ALIDPG_ROOT/bin/aliroot_dpgsim.sh --run 297595 --mode sim,rec,qa --uid 1 --nevents 1 --generator PWGLF:Hijing_Sexaquark:A1.8 --simulation SimulationDefaultIonTail --system Pb-Pb --detector NoAD
     

• First successful attempt

  1. Install latest tags of every package (AliRoot, AliPhysics, AliDPG, alidist) and add the generators as described above.
  2. Enter the environment:

     alienv enter AliRoot/latest,AliPhysics/latest,AliDPG/latest
     

  3. Download OCDB file via:

     alien.py cp alien:///alice/sim/2020/LHC20e3/OCDB/297595/OCDBsim.root file://OCDBsim.root
     

  4. Execute:

     $ALIDPG_ROOT/bin/aliroot_dpgsim.sh --run 297595 --mode sim --uid 1 --nevents 1 --generator PWGLF:Hijing_Sexaquark:A1.8 --simulation SimulationDefaultIonTail --system Pb-Pb --detector NoAD
     

• ALIROOT-8850

  Description: Pb-Pb, 5.02 TeV - Hijing + injected Hypernuclei anchored to pass3 of LHC18q and LHC18r, Geant3, minimum bias

  1. Log into lxplus.cern.ch (not lxplus9!)
  2. Download OCDB file
     • load recent software (for example, alienv enter O2Physics/daily-20231108-0100-1)
     • download via alien.py cp alien:///alice/sim/2020/LHC20e3/OCDB/297595/OCDBsim.root file://OCDBsim.root
     • get out of env.
  3. Enter the environment:

     alienv enter AliPhysics/v5-09-54p-01_O2-1,AliDPG/prod-202305-01-1,jemalloc/latest
     

  4. Execute

     $ALIDPG_ROOT/bin/aliroot_dpgsim.sh --run 297595 --mode sim --uid 1 --nevents 1 --generator PWGLF:Hijing_Nuclex007 --simulation SimulationDefaultIonTail --system Pb-Pb
     

  Reference: any JDL file of the respective production tag LHC23f1.