1. Simulation Tools for Test Beam
Francesco Longo
University & INFN Trieste, Italy
Thanks to Benoit, Philippe, Heather, Leon

2. Test Beam Simulation Tools
Simulation Issues for Test Beam 2006
G4 validation
Physics Choices (EM, Hadronics)
Physics Parameters (e.g. cuts, ..)
Gleam and GLAST LAT performance
Verification of relevant low level distribution
Simulation of Beam
PS and SPS
Data Analysis preparation
Verification of Statistics
Simulation How To
Beam and Calibration Unit

3. Beam Test studies Simulation Studies Description of beam
Check of composition T9 & H4 (cf G3 vs G4)
HARP/G4 hadronic processes validation
PS simulation
Positioning of detectors and passive material
Dump material and effects
Beam divergence and width
Energy dispersion
SPS simulation

4. Beam Simulation Update
Simulation of T9 beam
cf H4 G3 simulation (
T9 primary target
Table of Targets (
G4 Simulation of Al 3*5*100 + W  10 * 3
24 GeV primary protons
Preliminary Analysis of pi vs e- content
Independent check of G3 vs G4?
Need check of hadronic processes
Cuts on beam divergence and beam momentum spread
In progress

5. Beam Simulation update
Al box
W box

6. T9 Beam Simulation
G3 T9 simulation (N.Mazziotta)

7. Beam Simulation Update
Simulation of Tagging system
Si detector dimensions update (soon in CVS)
Position of Si tagger on beam line (verification with AGILE)
Magnet dimensions (verification with AGILE)
Beam dump presence and material
Beam dimensions
Update on Physics Processes (soon in CVS)
Beam Spread (soon in CVS)
Preliminary Tuple Tagging
To be done
Tagging Algorithm
Definition of Ancillary Tuples

8. Beam Simulation Update
Beam on CU
Use and update of beamtest06 package both for PS/SPS
Full chain beamtest06/Gleam in place
Issues
Need definition of MC/Digi structure of Ancillary detectors

9. Beam Simulation update
Position of Tagger
Si Tagger Dim
B field value
Magnet
dimension

10. BeamTest06 A G4 standalone program
Commands defined in macro (e.g. novis.mac)
/gun/particle e-
New commands defined (in v3r0)
Magnet, beam width
Beam divergence (soon)
Particles generated in PrimaryGenerator Action
Beam Spread, Beam position
Beam composition?
Geometry setup
Volumes description
Solid= Shape, Logical = Material + .., Physical = Position)
Hits
Stepping or Tracking Action (e.g. G3 GUSTEP)
Sensitive Detectors?
Hit definition and Scoring at Event Action
Random Number through CLHEP
Choice of Seeds and Generator

11. Beam Simulation update
T9 AGILE measurements

12. Table of widths and divergence
Energy YWid ZWid YDiv ZDiv

13. BeamTest06 The Physics In v3r0 checkout only EM
Similar physics as G4Generator
Need to include “our” MCS?
New Hadronic Models (more important for CU)
Set of Physics Models (in G4 releases)
Needs a workaround … (see J.Bregeon work)
Various Physics Lists available… with alternative hadronic description
Unique Physics List? Needs to check how to change
More physics for the users?
Important for CU study and Beam Composition

14. BeamTest06 Output MC root file to be read by Gleam with JO
PDG, + position, momentum/energy info
Tagging detectors Tuple
Needs
Beamtest06 is checkout package
Geant4UI ext library in /afs/ SLAC space
Not needed … G4interfaces lib
Visualization
Needs a small change on G4 library cmt (soon in CVS)
Need to include G4visualization (need a workaround on Linux)
Multiple drivers

15. Tuple preliminary

16. BeamTest06 v3r1(?)
VRML
output of G4

17. BeamTest06 v3r1(?)
HepRep
output of G4
Visualized with
FRED

18. Simulation Needs Description of T9 setup & H4 setup
Tagging system simulation
Tagging and PID Ntuple and Algorithm definition
Requirements:
Beamtest06
Common Random Number Treatment
Beam Setup definition and ancillary
Gleam
Production of SVAC or BT ntuple
G4 6.2p02 or 7.x or 8.x see discussion at the Ana group
Job Options for Hadronic Models
BTRelease: Installation of required packages

19. CU simulation Geometry of CU in xmlGeoDbs Need to include Containers
Position of CU vs beam (BeamTransform in G4Generator)
Particles
Input from MC file from beamtest06
Multiple particles simulation
Physics
G4Generator jobOptions
Need to update Hadronic Physics
Digi, Recon, Evt analysis
As in GR … (but ACD?)
Particle Hypothesis?
Ad hoc CT variables?

20. Beam Simulation update
H4 beam on CU

21. MCS Check for Muons
Preliminary by F.L. and M.B.

22. Check for e-
Preliminary by F.L. and M.B.

23. How To Take GlastRelease v8r1 Checkout beamtest06 v3r0
Use proper jobOptions
ToDo
Add plots for beam Simulation
SVAC tuple generation (needed?)
CT tuples fill

24. Actions for Sim WG PS and SPS Beam Composition
Check G3 vs G4 and vs data
PS Beam Simulation
Position of Tagging & Ancillary
Ancillary detectors recon
Beam Energy dispersion
Dump material
Particle composition
Beam Setup (e-, hadrons, gamma, etc.)
SPS Beam Simulation
Ancillary detectors
Calibration Unit Simulation
Containers Simulation
Table Rotation and Position