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: