Reconstruction Tasks and Topics for Further Development

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
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.)

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

Issues to Resolve

1. develop convention for defining t₀ for each detector

Questions to Answer

1. What is the general scheme (or schemes) that we want to support?
2. What is the nature of the user interface into particle ID information?