Difference between revisions of "Mattione Update 11162011"
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| − | == Introduction == | + | == DC dE/dx Study Overview == |
| + | |||
| + | === Introduction === | ||
* DC dE/dx information used for PID is bad, is disabled until fixed. | * DC dE/dx information used for PID is bad, is disabled until fixed. | ||
| − | * DC dE/dx Confidence Level (for protons, similar for K+'s, π<sup>+</sup>'s, and π<sup>-</sup>). | + | ** DC dE/dx Confidence Level (for protons, similar for K+'s, π<sup>+</sup>'s, and π<sup>-</sup>). |
[[Image:Mattione_Update_11162011_DCdEdxConfidenceLevel.gif|thumb|left|600px|protons]] | [[Image:Mattione_Update_11162011_DCdEdxConfidenceLevel.gif|thumb|left|600px|protons]] | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
| − | === | + | === Procedure === |
| − | * CDC & FDC treated separately | + | * Look at reconstructed dE/dx in CDC & FDC (treated separately: different gas mixtures). |
| − | * Half of the track hits in each of the FDC/CDC (those with the largest dE/dx) are ignored | + | ** Half of the track hits in each of the FDC/CDC (those with the largest dE/dx) are ignored: truncates Landau distribution to resemble Gaussian distribution. |
| − | + | * Will fit mean and σ of these distributions and use them in calculation of χ<sup>2</sup> | |
| − | == | + | == FDC π<sup>+</sup> == |
* Generated up to p = 9.0 GeV/c | * Generated up to p = 9.0 GeV/c | ||
| − | * | + | * FDC π<sup>+</sup> dE/dx vs. βγ |
| − | [[Image: | + | [[Image:Mattione_Update_11162011_dEdxVsBetaGamma_FDCPiPlus.gif|thumb|left|600px|FDC, π<sup>+</sup>]] |
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
| − | * | + | * FDC π<sup>+</sup> dE/dx Mean, Resolution vs. βγ |
{| class="wikitable" | {| class="wikitable" | ||
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_MeandEdxVsBetaGamma_FDCPiPlus.gif|thumb|left|600px|FDC, π<sup>+</sup>]] |
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_SigmadEdxVsBetaGamma_FDCPiPlus.gif|thumb|left|600px|FDC, π<sup>+</sup>]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
| − | * | + | * FDC π<sup>+</sup> dE/dx Mean, Resolution in different dx Bins vs. βγ |
{| class="wikitable" | {| class="wikitable" | ||
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_MeandEdxVsBetaGammadxBins_FDCPiPlus.gif|thumb|left|600px|FDC, π<sup>+</sup>]] |
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_SigmadEdxVsBetaGammadxBins_FDCPiPlus.gif|thumb|left|600px|FDC, π<sup>+</sup>]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
| − | == | + | == CDC π<sup>+</sup>== |
* Generated up to p = 9.0 GeV/c | * Generated up to p = 9.0 GeV/c | ||
| − | * | + | * CDC π<sup>+</sup> dE/dx vs. βγ |
| − | [[Image: | + | [[Image:Mattione_Update_11162011_dEdxVsBetaGamma_CDCPiPlus.gif|thumb|left|600px|CDC, π<sup>+</sup>]] |
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
| − | * | + | * CDC π<sup>+</sup> dE/dx Mean, Resolution vs. βγ |
{| class="wikitable" | {| class="wikitable" | ||
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_MeandEdxVsBetaGamma_CDCPiPlus.gif|thumb|left|600px|CDC, π<sup>+</sup>]] |
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_SigmadEdxVsBetaGamma_CDCPiPlus.gif|thumb|left|600px|CDC, π<sup>+</sup>]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
| − | * | + | <!-- |
| + | * CDC π<sup>+</sup> dE/dx Mean, Resolution in different dx Bins vs. βγ | ||
{| class="wikitable" | {| class="wikitable" | ||
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_MeandEdxVsBetaGammadxBins_CDCPiPlus.gif|thumb|left|600px|CDC, π<sup>+</sup>]] |
| − | | [[Image: | + | | [[Image:Mattione_Update_11162011_SigmadEdxVsBetaGammadxBins_CDCPiPlus.gif|thumb|left|600px|CDC, π<sup>+</sup>]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
| + | --> | ||
== CDC vs. FDC π<sup>+</sup> == | == CDC vs. FDC π<sup>+</sup> == | ||
Latest revision as of 14:22, 16 November 2011
Contents
DC dE/dx Study Overview
Introduction
- DC dE/dx information used for PID is bad, is disabled until fixed.
- DC dE/dx Confidence Level (for protons, similar for K+'s, π+'s, and π-).
Procedure
- Look at reconstructed dE/dx in CDC & FDC (treated separately: different gas mixtures).
- Half of the track hits in each of the FDC/CDC (those with the largest dE/dx) are ignored: truncates Landau distribution to resemble Gaussian distribution.
- Will fit mean and σ of these distributions and use them in calculation of χ2
FDC π+
- Generated up to p = 9.0 GeV/c
- FDC π+ dE/dx vs. βγ
- FDC π+ dE/dx Mean, Resolution vs. βγ
- FDC π+ dE/dx Mean, Resolution in different dx Bins vs. βγ
CDC π+
- Generated up to p = 9.0 GeV/c
- CDC π+ dE/dx vs. βγ
- CDC π+ dE/dx Mean, Resolution vs. βγ
CDC vs. FDC π+
- CDC vs. FDC π+ dE/dx Mean, Resolution vs. βγ
