Delivered
| Topic |
Software update |
Description |
Notes |
| TKR Digi |
TkrDigi v2r6 |
includes charge sharing and ion signal |
two available routines, not enough to recover TKR hit deficit in MC |
| ACD Digi |
GR-v11 |
better single photo-electron signal simulation by extending Poisson fluctuations to first dynodes amplification |
|
| CAL Calibration Procedure |
column-wise charge injection in CAL CPT online scripts |
correct non-linearities in charge injection |
improved CAL calibration but did not solve energy shift; will be default calibration mode for the LAT, not relevant for simulation |
| CalRecon |
GR-v11 |
correct logs and inter-range cross-talk |
require mapping of cross-talk for the LAT |
| Hadronic physics list |
GR-v12 |
|
improved model for hadronic interactions (Bertini model up tp 10GeV, QGSP model up to 20GeV) |
| TKR material audit |
GR-v12 |
real TKR thin converter thickness |
8% lower wrt to original design |
List of planned deliverables and expected delivery
| Topic |
Expected delivery |
Description |
Notes |
| TKR material audit |
end september |
update mass of passive material to real values from measurements |
known missing mass in current model mostly around active area |
| CAL material audit |
end september |
check and update CAL mass and materials |
preliminary surveys indicate good model |
| TKR alignment in MC |
quick fix available in GR-v12 |
fix bug in MC alignment |
checking out alternative alignment strategy |
| New mass simulation |
end september |
with latest sim-recon package |
will be used to re-evaluate TKR hits deficit and CAL energy shift in simulation |
| Special TKR geometry simulation |
in progress |
vacuum layer between silicon layers and tray core |
performed to check penetration of delta rays in a more realistic geometry; preliminary results indicate little effect on TKR hits |
| Low-energy simulations |
in progress |
systematic test of LE EM physics list in G4 and range cutoff studies |
preliminary results indicate no effect of range cutoffs and a non-perfect control of LE physics list in our simulation |
| background simulations with higher TKR hits |
end september |
increase artificially number of TKR hits to mimick BT data |
will use alignment bug and will check effect on background rejection |
| background simulation with shifted CAL energies |
end september |
artificially scale simulated CAL energies and most important CAL variables to mimick BT data |
will check effect on background rejection and reconstruction algorithms |
| final best physics list |
november |
final MC tuning |
should flow into the Service Challenge 1 year run. it will includes best physics list and modification to geometry |
Currently planned MC checks:
- restate data/MC agreement with v7 MC for CAL
- cross-check TKR PSF and HIT summary posted in the agenda on october 17
- check effect of the extra neutral vertex on the PSF - any bias introduced?
- double check beam spot from David P for all simulated runs
- check cerenkov pressure for run at 200GeV - Johan found it was wrong?
- verify alignment effect in v7
- seems negligible from Johan MC-MC comparison (links on BeamTest:Good Runs), while cerenkov pressure seem to have been wrong in earlier MC
- sistematically check cerenkov pressure systematics with a scan
- verify effect of cuts on hit deficit
- run 1 sim with extended beam spot and cut on differnt parts to check possible effects
- apply nicola's cuts on beam spot plot and check if special spots are selected
- add fiducial cuts in the selection?
- smearing routine to align CAL MC variables to data values
- scan extra material along beam line after above realignment
