Test Beam Simulator Project Description Command Interface Data

Test Beam Simulator Project Description Command Interface Data Format Geometry Visualization Plans Jeremy Mc. Cormick, Vishnu Zutshi 10/1/03

Project Description • Started 8/6 by JM • CVS: tbeam • Homepage: http: //nicadd. niu. edu/~jeremy/g 4 proj • Geant 4 • Other libs: g 4 phys, popt • Geometry of DESY Test Beam Prototype 10/1/03

Simulation Run • pion & electron edep • 1000 event batches • E = 2, 5, 10, 15, 20, 30, 50 Ge. V • Randomized firing pattern constrained to box region • Eventually include multi-particle events (ex. : 2+ electrons) 10/1/03

Classes General Geometry & Hits • Cellulizer • Box. Cellulizer • Geometry. Map • Material. Map • Phys. Vol. Info • TBCal • TBTail. Catcher • TBECal • TBHCal • TBCell. Hit • TBDetector. Construction • TBSensitive. Detector G 4 User • TBEvent. Action • TBPrimary. Generator. Action • TBRun. Action • TBStepping. Action • TBVis. Manager 10/1/03

Command Interface • Command-line Options: -u -c -t -h -o outfile_path -m macro_file -v -r rand_max : print usage : show all cells : visualize tracks : visualize hits : hits output filepath : macro_file : visualization on startup : max rand val • All Options Example: testbeam -vhtc -o outfile_txt -m run. mac -r 40 10/1/03

Text Output Format EVENT evt_no ECAL no_hits layer_no … x y z cell_edep abs_edep … HCAL … … TAILCATCHER … … 10/1/03

Geometry Overview Component No. Layers * thickness = total thickness X x Y dim. (m) Materials HCal 50 * 2. 5 cm = 125 cm 1 x 1 Stainless Steel, Polystyrene ECal 30 * 5 mm = 15 cm 1 x 1 W, G 10, Si, Cu, Air Tail Catcher 6* 10. 5 cm = 63 cm 1. 5 x 1. 5 Same as HCal Total 203 cm max 1. 5 - 10/1/03

Whole Device TC Ecal HCal 1. 5 m 1 m ~2 m 10/1/03

ECal Front 10/1/03 Side

HCal Front 10/1/03 Side (Angled)

Tail Catcher Side Front (Hor) Front (transparent) Front (Vert) 10/1/03

Cells 10/1/03 Component Layers Cells / Layer Total Cells HCal 50 100 inner + 364 outer = 464 23, 200 ECal 30 10, 000 300, 000 Tail Catcher 6 15 90 Total - 323, 290 86

Visualization Cell Hits Tracks Blue: + Red: Green: N 10/1/03

10 Ge. V Pion: Front View 10/1/03

Tail Catcher Hits: Front View 10/1/03

20 Ge. V Pion: Side View 10/1/03

50 Ge. V e-: Side View 10/1/03

Plans • Geometry • Multi-particle events • Hits format to track particle contributions • Visualization by layer • Color-coding hits by edep • Stepping through an event at a time • Cuts (? ) • Cell effects (? ) 10/1/03