• First, and failed, attempt at simulating the CMS detector without the pixel detector by modifying the geometry xml files can be found on the LPC Agenda Server and locally as well.  It is still useful as a documented way to build a release with locally modified external packages.
• Second, and successful, attempt at simulating without pixels.  This involves a modified version of the code that digitizes the GEANT charge into silicon hits in the pixel detector.  This can be found on the LPC Agenda Server and locally as well
• Tony also has a nice set of plots with these same pixel detector configurations here
• How to compile modified version of pixel digitizer and tracking code/ntuple to simulate without pixel layers.
• Carl's (somewhat) hacky scripts to run tracking studies.
  

Standalone Pixel Vertex Code

• See Carl's e-log entry on running ORCA using CRAB
• See Carl's e-log entry on getting the correct version of Susanna's pixel code from ORCA
• See the final report by Susanna on her pixel vertex code (resolutions, efficiencies)
• Here are Aaron's validation plots of ORCA_8_7_3 and ORCA_8_7_5 on the bbbar MC files that Carl produced. I am able to reproduce Susanna's resolutions and efficiencies.  For ORCA_8_7_3 there are 5000 events, for 8_7_5 there are 150,000 events.  For the resolutions below, I first list the RMS and then the sigma from a one-gaussian fit.
  

Version	Eff_H	Eff_D	Res_H	Res_D	Pull_H	Pull_D
8_7_3	99.5%	100%	51um/45um	41um/36um	1.08	1.19
8_7_5	99.50%	99.99%	51um/46um	42um/37um	1.07	1.21