nicadd test beam simulations

Test Beam Simulations11/23/03 1

NICADD Test Beam Simulations

Project

Geometry

Standalone

TBMokka

Comparisons

Plans


Project

• NICADD collaboration with DESY/Calice• Test Beam Prototype: ECal, HCal, Tail Catcher• ECal/HCal similar to SDJan03 layering• Sensitive Materials: Polystyrene, Silicon• NICADD concentration on Tail Catcher• TB/Mokka, TB standalone• Other projects at DESY (Geant4/Geant3)• concept generalizable to any “box-like” calorimeter


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


ECalFront Side

1 m ~6 cm


HCalFront Side (Angled)

1 m 1.25 m


Tail CatcherFront (Hor)

Front (Vert)

Side

Front (transparent)

1.5 m1.5 m

63 cm


Alternate TC Configurations

12 layers 10-layer Fine


323,290-86Total

90156Tail Catcher

300,00010,00030ECal

23,200100 inner +

364 outer = 464

50HCal

Total CellsCells / Layer

LayersComponent

1.5 m

Cells


Test Beam Standalone

• G4 project• g4phys library (Mokka v01-05), popt• GPS• placement for each cell• custom geometry map• text output format• available via CVS


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); }}

TB Hits Processing


EVENT evt_noTRACK n_tracksPDGcode x y z px py pzECAL n_hitslayer_n … x y z cell_edep abs_edep n_trackstrack_n track_edep…HCAL ……TAILCATCHER ……

Text Output Format


Event Display


TBMokka• Mokka v02-01• Geometry Driver• Sensitive Detector• Cell Replicas• X/Z cell dimensions• Indexing scheme started• LCIO output• “proof of concept” for Mokka driver authoring• includes additions to Mokka code, such as working indexing scheme in Geometry/CGA/CellHit.cc


Mokka CGADatabasesTBhcal00 hcal layer_inner layer_outer layer_thicknessTBecal00 ecal layer layer_thicknessTBcatcher00 catcher layer layer_thickness

Model TBecal00

DriversTBhcal00TBecal00TBcatcher00


Histograms

• initial TB/TBMokka comparisons• all samples 20 GeV pions unless otherwise noted• performed with JAS3: AIDA, LCIO reader, txt FileMgr

...


TB: HCal Live Edep


TB: % Edep in Inner Cells


TBMokka: Component Hit Number


Number of Hits per Event


Edep by Event200 piplus @ 20 GeV (all comparison histos)


Hit Edep


ECal: Number of Hits per Event


ECal: Number of Hits by Layer


HCal: Number of Hits


Plans• improve TBMokka performance• TB runtime geometry specification• find source of discrepancies in # hits/edep and eliminate• common physics list• introduce TBMokka to European sim. teams (Calice/DESY)• TBMokka into Mokka CVS


• 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

nicadd test beam simulations

Documents