1. MonteCarlo Simulation
Emanuele Leonardi
PADME General Meeting - LNF January 2017

2. E. Leonardi - PADME G.M. - MC Simulation
MC Digi
MC Digi implemented
Currently in feature/mcdigi branch, will be merged soon to develop
Root classes available for all detectors in PadmeRoot
E.g. TECalMCDigi, TPVetoMCDigi, TTargetMCDigi, …
All inherit from TMCVDigi
Defines channel id, total energy, and time
Each detector can implement its own data content
E.g. SAC digis save a histogram per channel with time distribution of deposited energy → will evolve to full simulation of ADC signal
17/01/2017
E. Leonardi - PADME G.M. - MC Simulation

3. E. Leonardi - PADME G.M. - MC Simulation
MC Digi
PadmeMC now include one digi class and one digitizer per detector
ECalDigi, TargetDigi, SACDigi, …
ECalDigitizer, TargetDigitizer, SACDigitizer, …
Each detector RootIO class can now write both hits and digis to the ROOT output file
User can choose to save only hits, only digis, or both
Need feedback/collaboration from detector experts to implement the details
17/01/2017
E. Leonardi - PADME G.M. - MC Simulation

4. E. Leonardi - PADME G.M. - MC Simulation
ECal coating
Coating of reflective paint around ECal crystals
Thickness of coating and air gap can be modified via datacards
Default: 100µm coating, 50µm gap
No optical properties
Material definition from EJ-510 data sheet
EJ-510 from Eljen Technologies
Titanium dioxide pigment
Crystal
Coating
// EJ510 reflective paint
G4Material* EJ510Paint = new G4Material("EJ510Paint",1.182*g/cm3,4);
EJ510Paint->AddElement(G4Element::GetElement("Ti"),41.08*perCent);
EJ510Paint->AddElement(G4Element::GetElement("C"), 17.18*perCent);
EJ510Paint->AddElement(G4Element::GetElement("H"), 2.88*perCent);
EJ510Paint->AddElement(G4Element::GetElement("O"), 38.86*perCent);
Air gap
17/01/2017
E. Leonardi - PADME G.M. - MC Simulation

5. E. Leonardi - PADME G.M. - MC Simulation
Experimental hall
Realistic concrete walls around the experiment
Can easily add more concrete blocks
Only for background studies
Simulation time explodes when active
N.B. the detector needs to be mirrored back to its original orientation
17/01/2017
E. Leonardi - PADME G.M. - MC Simulation

6. E. Leonardi - PADME G.M. - MC Simulation
Vacuum Chamber
An initial portion of the vacuum chamber is included in the simulation
Still missing the section downstream from the magnet
0.8cm stainless steel plate
10cm ø entrance hole
17/01/2017
E. Leonardi - PADME G.M. - MC Simulation