Difference between revisions of "Reconstruction Tasks and Topics for Further Development"

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The items listed here are areas that we have identified as needing further development and/or study. Feel free to add your topics or comment on those already listed. Comments can be entered on the "discussion" tab (see above).
 
  
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# Particle identification
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= Focus Areas =
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## What is the general scheme (or schemes) that we want to support?
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## What is the nature of the user interface into particle ID information?
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We will try to broadly classify outstanding software issues and tasks into three focus areas:  Tracking, Calorimetry, and PID.  For each of these areas we have appointed a contact person:  Simon (Tracking), Matt (Calorimetry), and Paul (PID).  The contact person is responsible for both prioritizing the issues to work on, seeing that progress is made on resolving these problems, and reporting status at each software meeting.
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# &chi;<sup>2</sup> distributions from track fits
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## What are the main causes of tracks in the zero probability peak?
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## Are hit reconstruction errors calculated correctly? Consistently?
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== Tracking ==
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# Re-do checks of error matrices from photon reconstruction
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=== Issues to Resolve ===
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# wrong track sign choice at pattern recognition stage in FDC
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# poor proton reconstruction in b<sub>1</sub>&pi; events
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## ...in general, need to improve tracking efficiency for multi-particle events...
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# incorrect &chi;<sup>2</sup> distributions from track fits:  huge peak at zero
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# validate propagation of errors from hit level through the fitting procedure to the track level
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=== Questions to Answer ===
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# How do we handle large single Coulomb scattering in tracking, e.g. between the CDC and FDC?
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# How do we handle decays in tracking? (This might have similar resolution to the question above since the track shape is similar.)
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# Can we quantify the performance of the track finding algorithm in a variety of event environments?
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== Calorimetry ==
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=== Issues to Resolve ===
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# allow easy switch between 1-2-3-4 and 3-3-4 BCAL schemes; include calibrations for both
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# tune new BCAL reconstruction algorithm, explore impact on shower multiplicity in b<sub>1</sub>&pi; events
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# include timing reconstruction in FCAL
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# correct the error matrix calculation for both FCAL and BCAL
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=== Questions to Answer===
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# When photons get split into multiple clusters, is all of the energy detected?
 
# When photons get split into multiple clusters, is all of the energy detected?
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# How do we handle large single Coulomb scattering in tracking?
 
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# How do we handle decays in tracking?
 
 
# What is our efficiency for &pi;<sup>0</sup> detection? &eta;&rarr;&gamma;&gamma;?
 
# What is our efficiency for &pi;<sup>0</sup> detection? &eta;&rarr;&gamma;&gamma;?
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== PID ==
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=== Tasks/Issues to Resolve ===
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# Develop neutron reconstruction: calculate neutron energy from energy in calorimeters.
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# Improve TOF/BCAL/FCAL uncertainties and integrate into PID. 
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# Implement TOF dE/dx calculation and integrate into PID.
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# Look into implementing BCAL dE/dx calculation.

Latest revision as of 15:14, 4 October 2011

Focus Areas

We will try to broadly classify outstanding software issues and tasks into three focus areas: Tracking, Calorimetry, and PID. For each of these areas we have appointed a contact person: Simon (Tracking), Matt (Calorimetry), and Paul (PID). The contact person is responsible for both prioritizing the issues to work on, seeing that progress is made on resolving these problems, and reporting status at each software meeting.


Tracking

Issues to Resolve

  1. wrong track sign choice at pattern recognition stage in FDC
  2. poor proton reconstruction in b1π events
    1. ...in general, need to improve tracking efficiency for multi-particle events...
  3. incorrect χ2 distributions from track fits: huge peak at zero
  4. validate propagation of errors from hit level through the fitting procedure to the track level

Questions to Answer

  1. How do we handle large single Coulomb scattering in tracking, e.g. between the CDC and FDC?
  2. How do we handle decays in tracking? (This might have similar resolution to the question above since the track shape is similar.)
  3. Can we quantify the performance of the track finding algorithm in a variety of event environments?

Calorimetry

Issues to Resolve

  1. allow easy switch between 1-2-3-4 and 3-3-4 BCAL schemes; include calibrations for both
  2. tune new BCAL reconstruction algorithm, explore impact on shower multiplicity in b1π events
  3. include timing reconstruction in FCAL
  4. correct the error matrix calculation for both FCAL and BCAL

Questions to Answer

  1. When photons get split into multiple clusters, is all of the energy detected?
  2. What is our efficiency for π0 detection? η→γγ?


PID

Tasks/Issues to Resolve

  1. Develop neutron reconstruction: calculate neutron energy from energy in calorimeters.
  2. Improve TOF/BCAL/FCAL uncertainties and integrate into PID.
  3. Implement TOF dE/dx calculation and integrate into PID.
  4. Look into implementing BCAL dE/dx calculation.
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