Difference between revisions of "Mattione BCAL Segmentation"

Revision as of 12:46, 12 October 2011

Procedure

Determine Smearing

• (Protons & pions generating/simulating, need to gen all 8-38 degrees) Fit current BCAL time uncertainties for photons, pions, and protons: make sure they're similar to the uncertainties in David's studies.
  • If they are not: probably due to clustering algorithm(s): ASSUME that the % of the timing uncertainty improvement is independent of this difference.

• (Waiting on results) Fit the BCAL time resolution improvement % from the table of David's results as a function of theta (separately for photons, pions, and protons). Energy-dependence comes from the coefficients.

• (Need to gen all 8-38 degrees) Separately generate single-track events of photons, pions, and protons with the BCAL time smearing disabled (generated at center of target: assume that this is what David did).
• (Running plugin on each) Determine time-smearing necessary to reach the improved time resolution, code smearing into BCAL shower reconstruction.

Physics Analysis

• Determine PID cuts for protons & pions (delta-beta vs p) for both smearing resolutions (use datasets generated earlier).

• Generate b1pi events (all vertex z)
• Two analyses: one with BCAL time smearing disabled (smear during shower reconstruction), the other with default smearing.
• Run cooking code to reconstruct events.
• Perform b1pi analysis, using PID cuts (allow all hypotheses).

File Tracking

Job Files

bcalsegmentation_photons/run_gluex_2011-10-12-002336_*: photons, all angles, no smearing resolution_bcal/run_gluex_2011-09-04-2112_*: photons, all angles, smearing (group 1) resolution_bcal/run_gluex_2011-09-19-163654_*: photons, all angles, smearing (group 2)

bcalsegmentation_protons/run_gluex_2011-10-12-005105_*: protons, all angles, no smearing bcalsegmentation_protons/run_gluex_2011-10-12-114308_*: protons, all angles, smearing

bcalsegmentation_piplus/run_gluex_2011-10-12-005143_*: piplus, all angles, no smearing bcalsegmentation_piplus/run_gluex_2011-10-12-114325_*: piplus, all angles, smearing