10/28/031 nicadd test beam simulator j. mccormick jeremy i. mccormick project description geometry...

10/28/03 1NICADD Test Beam Simulator

J. McCormick

Jeremy I. McCormick

Project Description

Geometry

Hits Processing

Command Interface

Particle Generation

Text Output Format

Histograms

Visualization

Obtaining Test Beam

NICADD Test Beam Simulator


J. McCormick

Project Description

• Test Beam Prototype

• Hadron & EM Calorimeters, Tail Catcher

• HCal & ECal layering similar to SDJan03

• Polystyrene and Silicon sensitive regions

• one volume per cell geometries

• aggregate step hits by cell with track contributions


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Libraries

• Geant4.5.2.p01

• GPS

• g4phys SO

• popt for CL

• Composite Materials def from PEGS4 (CERN)


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Classes

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


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Class Diagram: Associations


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GeometryMap

GeometryMap ComputeWorldVectors() AddDaughters(vol, layno)

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

TBCellHit

TBDetectorConstructionTBSensitiveDetector


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Detector Geometry

ECal HCal

TC

~2 m

1.5 m1 m


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Geometry Overview

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


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Cells

323,290-86Total

90156Tail Catcher

300,00010,00030ECal

23,200100 inner +

364 outer = 464

50HCal

Total CellsCells / Layer

LayersComponent

1.5 m


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HCalFront Side (Angled)

1 m 1.25 m

30 cm


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ECalFront Side

1 m ~6 cm


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Tail CatcherFront (Hor)

Front (Vert)

SideFront (transparent)

1.5 m1.5 m

63 cm


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Command Interface

• 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

• /tbeam/doRun no_events


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Particle Generation

General Particle Source

• 1 to n MC particles

• random starting regions

• random theta / phi within max / min

• random energy

• /tbeam/doRun no_events for multiple events


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GPS Conical ExamplePi+pos = (0, 0 ,1990)theta = 0-10phi = alle = 2-10 GeVcharged traj only


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GPS Square Example

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


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Hits ProcessingTBSensitiveDetector::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); }}


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End of EventTBSensitiveDetector::EndOfEvent()

{ Copy Hits to HC }

TBEventAction::EndOfEventAction()

WriteEvent(evt)

WriteHitsCollection(HC)

aHit->Write(ostr)

TrackEdep->Write(ostr)

aHit->Draw()

VisualizeTrajectories(evt)


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Text Output Format

EVENT evt_no

ECAL no_hits

layer_no … x y z cell_edep abs_edep

track_no track_edep

…

HCAL …

…

TAILCATCHER …

…


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Output Example

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


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***Hist 1


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***Hist 2


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Visualization Scheme

Cell Hits (all layers)Tracks

Blue: positiveRed: negativeGreen: neutral

Trajectory Charge

Color

(front view of HCal & ECal hits)


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All Trajectories and Lit Cells: Side View

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


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GPS Square: Side View


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GPS Cone: Top View

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


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GPS Cone: Front View

100 pi+charged traj


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Hits and Tracks in ECale-pos = (0, 0, 1990)mom = (0, 0, -1)E = 50 GeVall traj & hits


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Additional Information

● Homepage: http://nicadd.niu.edu/~jeremy/g4proj

• Source Browser: http://nicadd.niu.edu/~jeremy/tbeam/html/

• CVSROOT=:ext:[email protected]:/cvs CVS_RSH=ssh Password = lcd_2004

• g4phys: http://nicadd.niu.edu/~jeremy/download/g4phys.tgz

• popt: http://www.gnu.org/directory/libs/popt.html

10/28/031 nicadd test beam simulator j. mccormick jeremy i. mccormick project description geometry...

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