Download - NICADD Test Beam Simulator

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


•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


• Geant4.5.2.p01

• GPS

• g4phys SO (Mokka v01-04 Physics List)

• popt for CL

• Composite Materials def from PEGS4 (CERN)

Software Libraries


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


Class Diagram

Directed Assoc.

Association

Inheritance


GeometryMap ComputeWorldVectors() AddDaughters(vol, layno)

PhysVolInfo GetLayNo() GetVolType() GetGlobId() GetHit() GetThreeVector() ComputeWorldVector()

TBCellHit

TBDetectorConstructionTBSensitiveDetector

GeometryMap


ECal HCal

TC

~2 m

1.5 m1 m

Detector Geometry


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


323,290-86Total

90156Tail Catcher

300,00010,00030ECal

23,200100 inner +

364 outer = 464

50HCal

Total CellsCells / Layer

LayersComponent

1.5 m

Cells


Front Side (Angled)

1 m 1.25 m

30 cm

HCal


Front Side (partial)

1 m ~6 cm

ECal


Front (Horizontal Layer)

Front (Vertical Layer)

SideFront (transparent)

1.5 m1.5 m

63 cm

Tail Catcher


• 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


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


10 pi+pos = (0, 0 ,1990)theta = 0-10phi = allE = 2-10 GeVcharged traj only

GPS Conical Example


10 pi+pos = (rX,rY,1990)square = 15 cm / sideE = 10-20 GeVcharged traj only

GPS Square Example


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


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


EVENT evt_no

ECAL no_hits

layer_no … x y z cell_edep abs_edep

track_no track_edep

…

HCAL …

…

TAILCATCHER …

…

Text Output Format


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


HCal Live Edep: 20 GeV Pi+


HCal Abs. Edep: 20 GeV Pi+


Edep in Inner Cells: 20 GeV Pi+


ECal Live Edep: 20 GeV Pi+


Cell Hits (all layers)Tracks

Blue: positiveRed: negativeGreen: neutral

Trajectory Charge

Color

(front view of HCal & ECal hits)

Visualization Scheme

(Geant4 defaults)


pi+pos = (0, 0, 1990)mom = (0, 0, -1)E = 20 GeVall traj & lit cells

All Trajectories and Lit Cells: Side View


100 pi+small squarecharged traj and hits

GPS Square: Side View


20 pi+theta = 0-10phi = allmom = (0, 0, -1)E = 5-10 GeVcharged traj & lit cells

GPS Cone: Top View


100 pi+random circlecharged traj

GPS Cone: Front View


Hits and Tracks in ECal

e-pos = (0, 0, 1990)mom = (0, 0, -1)E = 50 GeVall traj & hits


•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