Mattione Update 10312011
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Revision as of 11:08, 31 October 2011 by Pmatt (Talk | contribs) (Created page with "== Procedure == * Fit David's γ σ<sub>t</sub> Improvement: Make dE, θ map * Fit the π<sup>-</sup> & proton BCAL σ<sub>t</sub> vs θ distributions ...")
Contents
Procedure
- Fit David's γ σt Improvement: Make dE, θ map
- Fit the π- & proton BCAL σt vs θ distributions in dE bins, will apply improvement % to this resolution.
- Generate, simulate, smear, and reconstruct π(1600) -> b1π events with t-slope = 2.0 (was 5.0 for X(2000))
- For 1234 Segmentation, disabled BCAL hit t-smear in mc_smear, smear reconstructed shower time as a function of dE & &theta during reconstruction to reach improved resolution.
- Proton, π+'s, π-'s all smeared the same.
- For 1234 Segmentation, disabled BCAL hit t-smear in mc_smear, smear reconstructed shower time as a function of dE & &theta during reconstruction to reach improved resolution.
- Plot Δβ vs p for π+ candidates to see proton, π+ separation.
David's BCAL Photon Time Resolution Studies
- γ BCAL σt vs. dE (GeV):
Time Resolution Segmentation Ratio
- γ BCAL σt_1234 / σt_334 vs. dE (GeV):
- Fits to γ BCAL σt_1234 / σt_334 vs. θ in dE bins:
- Don't trust fits at low-θ, so linearly-interpolate between 12 and 16 degrees.
BCAL π- 334 Segmentation σt Fits
- BCAL π- 334 Segmentation σt Fits vs. θ in dE bins:
X(2000) -> b1pi Events, 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:
- X(2000) -> b1pi Events, π+ BCAL Δβ vs p, 1234 Segmentation: