Difference between revisions of "Mattione BCAL Segmentation"
From GlueXWiki
(→Procedure) |
(→Procedure) |
||
| Line 1: | Line 1: | ||
== Procedure == | == Procedure == | ||
| − | + | === Determine Smearing === | |
* '''(Photons fitting, others generating/simulating)''' Fit current BCAL time uncertainties for photons, pions, and protons: make sure they're similar to the uncertainties in David's studies. | * '''(Photons fitting, others generating/simulating)''' 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. | ** If they are not: probably due to clustering algorithm(s): '''ASSUME''' that the % of the timing uncertainty improvement is independent of this difference. | ||
| Line 9: | Line 9: | ||
* Determine time-smearing necessary to reach the improved time resolution, code smearing into BCAL shower reconstruction. | * Determine time-smearing necessary to reach the improved time resolution, code smearing into BCAL shower reconstruction. | ||
| − | * Determine PID cuts for protons & pions (delta-beta vs p) (use datasets generated earlier). | + | === 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) | * Generate b1pi events (all vertex z) | ||
Revision as of 11:45, 12 October 2011
Procedure
Determine Smearing
- (Photons fitting, others generating/simulating) 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.
- 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.
- (FINISHED) 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).
- 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).
