Difference between revisions of "Mattione BCAL Segmentation"

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== Procedure ==
 
== Procedure ==
 
=== Determine Smearing ===
 
=== Determine Smearing ===
−
* (DONE) Generate and simulate single-track events with and without the BCAL time smearing disabled  (generated at center of target: assume that this is what David did). 
 
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* '''(Select, fit)''' Fit BCAL time uncertainties for photons and pions with and without the BCAL time smearing disabled
 
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** If the uncertainties are not the same as David's studies: probably due to clustering algorithm(s): '''ASSUME''' that the % of the timing uncertainty improvement is independent of this difference.
 
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* '''(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. 
 
  
 +
== Plots ==
 +
=== &pi;<sup>+</sup> BCAL &Delta;&beta; vs p ===
 +
&Delta;&beta; = &beta;<sub>p</sub> - &beta;<sub>t</sub> = p/sqrt(p*p + m*m) - path/(c*TOF)
 +
 +
* X(2000) -> b1pi Events, &pi;<sup>+</sup> BCAL &Delta;&beta; vs p, 334 Segmentation:
 +
[[Image:Mattione_Update_10172011_BCALPiPlusDeltaBetaVsP.gif|thumb|left|600px]]
 +
<br style="clear:both;"/>
  
−
=== Physics Analysis ===
 
−
* '''(RUNNING)''' Generate b1pi events (all vertex z)
 
−
* Determine PID cuts for protons & pions (delta-beta vs p) for both smearing resolutions (for each source!)
 
−
* Run cooking code to reconstruct events (mass cuts & values, fix pi0/X mass). 
 
−
* Perform b1pi analysis, using PID cuts (allow all hypotheses).
 
  
 
== File Tracking ==
 
== File Tracking ==
−
 
+
=== Photons ===
−
=== Job Files ===
+
−
 
+
−
==== Photons ====
+
 
* bcalsegmentation_photons/run_gluex_2011-10-18-014237_*: photons, all angles
 
* bcalsegmentation_photons/run_gluex_2011-10-18-014237_*: photons, all angles
 
* bcalsegmentation_photons/run_gluex_2011-10-18-162223_*: photons, forward angles
 
* bcalsegmentation_photons/run_gluex_2011-10-18-162223_*: photons, forward angles
  
−
==== PiPluses ====
+
=== PiPluses ===
 
* bcalsegmentation_piplus/run_gluex_2011-10-18-014257_*: piplus, all angles
 
* bcalsegmentation_piplus/run_gluex_2011-10-18-014257_*: piplus, all angles
 
* bcalsegmentation_piplus/run_gluex_2011-10-18-185219_*: piplus, forward angles
 
* bcalsegmentation_piplus/run_gluex_2011-10-18-185219_*: piplus, forward angles

Revision as of 13:02, 21 October 2011

Procedure

Determine Smearing

Plots

π+ BCAL Δβ vs p

Δβ = βp - βt = p/sqrt(p*p + m*m) - path/(c*TOF)

  • X(2000) -> b1pi Events, π+ BCAL Δβ vs p, 334 Segmentation:
File:Mattione Update 10172011 BCALPiPlusDeltaBetaVsP.gif
600px



File Tracking

Photons

  • bcalsegmentation_photons/run_gluex_2011-10-18-014237_*: photons, all angles
  • bcalsegmentation_photons/run_gluex_2011-10-18-162223_*: photons, forward angles

PiPluses

  • bcalsegmentation_piplus/run_gluex_2011-10-18-014257_*: piplus, all angles
  • bcalsegmentation_piplus/run_gluex_2011-10-18-185219_*: piplus, forward angles
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