Forgot your password?
New user?
Document Actions
Pixel Tracking Studies
Goal: remove parts of the pixel detector to prepare for running in
2007 and to study effect of different numbers of pixel layers since it
is not yet certain how much we will have
- First attempt largely failed since editing geometry xml files for OSCAR confuses ORCA
- Next attempt worked. I Modified digitizer for pixel hits so that I could turn off various pixel barrel layers and forward disks by hand. (Efficiency is settable between 0 and 1.)
- Starting from ORCA_8_7_3 with input from OSCAR_3_7_0
- This required a modification to Tracker/TkSiPixelDigitizer/src/SiPixelDigitizer.cc
- This modified digitizer is checked into the LPC CVS repository
- There are now new options for ORCA:
PixelDigitizer:Barrel0Efficiency = 0
PixelDigitizer:Barrel1Efficiency = 0
PixelDigitizer:Barrel2Efficiency = 0
PixelDigitizer:Forward1Efficiency = 0
PixelDigitizer:Forward2Efficiency = 0 - You can find these 1000 events of 100 GeV single muons with the three scenarios below on cmsuaf.fnal.gov at:
- /uscms_data/d1/aarond/100001_default
- /uscms_data/d1/aarond/100001_killOuter
- /uscms_data/d1/aarond/100001_killAll
- Here are some preliminary results running the LPC tracking
algorithms over the same set of 100 GeV single muons (1000 events) with three
scenarios: default pixel configuration; no outer layers of pixels; no
pixels at all:
-
[This hole in the barrel for the road search and outside in algorithms is apparently due to a known bug which was not fixed in my version of the tracking code. This will be fixed in future plots.]
Efficiencies for default
effRec=0.965
effOI=0.974
effSRS=0.974
effPerf1=0.998
effPerf2=0.965
Efficiencies for killOuter
effRec=0.891
effOI=0.965
effSRS=0.965
effPerf1=0.997
effPerf2=0.891
Efficiencies for killAll
effRec=0
effOI=0.644
effSRS=0.642
effPerf1=0.996
effPerf2=0
- You can also find more useful plots from Tony here