NICADD Test Beam Simulator10/28/03 1
Jeremy I. McCormick
Project DescriptionClasses
Geometry
Hits Processing
Command Interface
Particle Generation
Text Output Format
Histograms
Visualization
Additional Information
NICADD Test Beam Simulator
NICADD Test Beam Simulator10/28/03 2
•Test Beam Prototype: HCal, ECal, Tail Catcher
•Sensitive Material: Polystyrene, Silicon
•HCal & ECal layering similar to SDJan03
•Single volume per cell geometry
•Edep by cell with track contributions
•Investigate E-flow & cluster separability
Project Description and Goals
NICADD Test Beam Simulator10/28/03 3
• Geant4.5.2.p01
• GPS
• g4phys SO (Mokka v01-04 Physics List)
• popt for CL
• Composite Materials def from PEGS4 (CERN)
Software Libraries
NICADD Test Beam Simulator10/28/03 4
G4 Utility• Cellulizer• BoxCellulizer• MaterialMap
User• TBEventAction• TBPrimaryGeneratorAction• TBRunAction• TBSteppingAction• TBTracking Action• TBVisManager
Geometry• GeometryMap• PhysVolInfo• TBDetectorConstruction• TBCal• TBTailCatcher• TBECal• TBHCal
Hits and Tracks• TBCellHit
• TBSensitiveDetector
• TBTrackInformation
• TBEdepMap
Classes
NICADD Test Beam Simulator10/28/03 5
Class Diagram
Directed Assoc.
Association
Inheritance
NICADD Test Beam Simulator10/28/03 6
GeometryMap ComputeWorldVectors() AddDaughters(vol, layno)
PhysVolInfo GetLayNo() GetVolType() GetGlobId() GetHit() GetThreeVector() ComputeWorldVector()
TBCellHit
TBDetectorConstructionTBSensitiveDetector
GeometryMap
NICADD Test Beam Simulator10/28/03 7
ECal HCal
TC
~2 m
1.5 m1 m
Detector Geometry
NICADD Test Beam Simulator10/28/03 8
Same as HCal1.5 x 1.56 *
10.5 cm =
63 cm
Tail Catcher
-max 1.5 x 1.5203 cmTotal
MaterialsX x Y dim. (m)No. Layers * thickness =
total thickness
Component
Stainless Steel, Polystyrene
1 x 150 *
2.5 cm =
125 cm
HCal
W, G10, Si, Cu, Air
1 x 130 *
5 mm =
15 cm
ECal
Geometry Overview
NICADD Test Beam Simulator10/28/03 9
323,290-86Total
90156Tail Catcher
300,00010,00030ECal
23,200100 inner +
364 outer = 464
50HCal
Total CellsCells / Layer
LayersComponent
1.5 m
Cells
NICADD Test Beam Simulator10/28/03 10
Front Side (Angled)
1 m 1.25 m
30 cm
HCal
NICADD Test Beam Simulator10/28/03 11
Front Side (partial)
1 m ~6 cm
ECal
NICADD Test Beam Simulator10/28/03 12
Front (Horizontal Layer)
Front (Vertical Layer)
SideFront (transparent)
1.5 m1.5 m
63 cm
Tail Catcher
NICADD Test Beam Simulator10/28/03 13
• Command-line Usage: -? : print usage -c : visualize cells -t : visualize tracks -h : visualize hits -o outfile_path : output filepath -m macro_file : macro -v : start with vis.mac
• All Options Example: testbeam -vhtc -o outfile_txt -m run.mac
Command Interface
NICADD Test Beam Simulator10/28/03 14
General Particle Source
• 1 to n MC particles
• fixed or random E, pos & mom
• theta, phi within min, max
• energy spectra
• /tbeam/doRun no_events for multiple events
Particle Generation
NICADD Test Beam Simulator10/28/03 15
10 pi+pos = (0, 0 ,1990)theta = 0-10phi = allE = 2-10 GeVcharged traj only
GPS Conical Example
NICADD Test Beam Simulator10/28/03 16
10 pi+pos = (rX,rY,1990)square = 15 cm / sideE = 10-20 GeVcharged traj only
GPS Square Example
NICADD Test Beam Simulator10/28/03 17
TBSensitiveDetector::ProcessHits()PhysVolInfo *pinfo = PhysVolMap->GetPhysVolInfo(physVol); TBCellHit *theHit = CellHit(physVol);if (!theHit) { theHit = new TBCellHit(); if (pinfo) { theHit->SetPhysVolInfo(pinfo); mapHits.insert(HitMapPair(physVol,theHit)); PhysVolInfo::PhysVolType vtype = pinfo->GetVolType(); if (vtype == PhysVolInfo::CELL) { theHit->IncrEdep(edep); TBTrackInformation *tinfo = (TBTrackInformation*)(aStep->GetTrack()->GetUserInformation()); theHit->IncrTrkEdep(tinfo->GetTrackID(),edep); } else if (vtype == PhysVolInfo::ABSORBER) { theHit->IncrAbsEdep(edep); }}
Hits Processing
NICADD Test Beam Simulator10/28/03 18
TBSensitiveDetector::EndOfEvent()
{ Copy Hits to HC }
TBEventAction::EndOfEventAction()
WriteEvent(evt)
WriteHitsCollection(HC)
aHit->Write(ostr)
TrackEdep->Write(ostr)
aHit->Draw()
VisualizeTrajectories(evt)
End of Event
NICADD Test Beam Simulator10/28/03 19
EVENT evt_no
ECAL no_hits
layer_no … x y z cell_edep abs_edep
track_no track_edep
…
HCAL …
…
TAILCATCHER …
…
Text Output Format
NICADD Test Beam Simulator10/28/03 20
EVENT 0
HCAL 2
1 0 0 0 0 -352.5 0 407.334 0
1 0 0 65 -85 435 1.22144 0 1
2 1.22144
ECAL 1
1 0 0 85 95 584.3 0.113163 0 1
2 0.113163
TAILCATCHER 1
1 0 0 0 300 -690 0.00100138 0 1
1 0.00100138
Output Example
NICADD Test Beam Simulator10/28/03 21
HCal Live Edep: 20 GeV Pi+
NICADD Test Beam Simulator10/28/03 22
HCal Abs. Edep: 20 GeV Pi+
NICADD Test Beam Simulator10/28/03 23
Edep in Inner Cells: 20 GeV Pi+
NICADD Test Beam Simulator10/28/03 24
ECal Live Edep: 20 GeV Pi+
NICADD Test Beam Simulator10/28/03 25
Cell Hits (all layers)Tracks
Blue: positiveRed: negativeGreen: neutral
Trajectory Charge
Color
(front view of HCal & ECal hits)
Visualization Scheme
(Geant4 defaults)
NICADD Test Beam Simulator10/28/03 26
pi+pos = (0, 0, 1990)mom = (0, 0, -1)E = 20 GeVall traj & lit cells
All Trajectories and Lit Cells: Side View
NICADD Test Beam Simulator10/28/03 27
100 pi+small squarecharged traj and hits
GPS Square: Side View
NICADD Test Beam Simulator10/28/03 28
20 pi+theta = 0-10phi = allmom = (0, 0, -1)E = 5-10 GeVcharged traj & lit cells
GPS Cone: Top View
NICADD Test Beam Simulator10/28/03 29
100 pi+random circlecharged traj
GPS Cone: Front View
NICADD Test Beam Simulator10/28/03 30
Hits and Tracks in ECal
e-pos = (0, 0, 1990)mom = (0, 0, -1)E = 50 GeVall traj & hits
NICADD Test Beam Simulator10/28/03 31
•Homepage: http://nicadd.niu.edu/~jeremy/g4proj
•Source Browser: http://nicadd.niu.edu/~jeremy/tbeam/html/
•CVS (bash):
export CVSROOT=:ext:[email protected]:/cvs export CVS_RSH=ssh cvs co tbeam •password: lcd_2004
•g4phys: http://nicadd.niu.edu/~jeremy/download/g4phys.tgz
•popt: http://www.gnu.org/directory/libs/popt.html
Additional Information
