Difference between revisions of "JLab discusion on tracking priorities, March 5, 2009"
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#** Generate new fields given "reasonable" variations in (coil positions, magnetic properties of iron, fringe fields downstream and iron cladding) | #** Generate new fields given "reasonable" variations in (coil positions, magnetic properties of iron, fringe fields downstream and iron cladding) | ||
#** key discriminators: momentum resolution, extrapolation to tof | #** key discriminators: momentum resolution, extrapolation to tof | ||
− | #* wire configuration for FDCs | + | #* staggering wire configuration for FDCs |
− | #* assignment | + | #** Timeline - summer 2009 |
+ | #** help left-right assignment?(use fit to wire positions to see which configuration finds more L/R configurations) | ||
+ | #** note: impact is that the number of types of electronic boards doubles (x, x' are different) | ||
#* Effective size of forward hole (nominally 1 deg) | #* Effective size of forward hole (nominally 1 deg) | ||
− | #* | + | #** What is the effective angle in the current design at 1 GeV? |
+ | #** efficiency around hole in prototype | ||
+ | #** impact: artwork on cathode boards | ||
+ | #** positions of packages impacts effective angle | ||
+ | #** timeline - December 2009 | ||
#*...we need to complete this list | #*...we need to complete this list | ||
# Achieving a robust tracking program for single tracks (multiple scattering, energy loss and position resolution only) | # Achieving a robust tracking program for single tracks (multiple scattering, energy loss and position resolution only) |
Revision as of 10:36, 11 March 2009
General comment: We have three tracking efforts. How can we leverage the work to date? How do we move forward effectively?
- Short summary of current effort (~5 slides each)
- Issues impacting design/construction
- Charge division in CDC
- What does it buy us in pattern recognition or resolving L/R ambiguities?
- How do connected wires add to ghost tracks?
- Where and how many measurements are they needed?
- On what time scale is this decision required (Jan 2010)?
- sensitivity to B-field
- Timeline - summer 2009
- Generate new fields given "reasonable" variations in (coil positions, magnetic properties of iron, fringe fields downstream and iron cladding)
- key discriminators: momentum resolution, extrapolation to tof
- staggering wire configuration for FDCs
- Timeline - summer 2009
- help left-right assignment?(use fit to wire positions to see which configuration finds more L/R configurations)
- note: impact is that the number of types of electronic boards doubles (x, x' are different)
- Effective size of forward hole (nominally 1 deg)
- What is the effective angle in the current design at 1 GeV?
- efficiency around hole in prototype
- impact: artwork on cathode boards
- positions of packages impacts effective angle
- timeline - December 2009
- ...we need to complete this list
- Charge division in CDC
- Achieving a robust tracking program for single tracks (multiple scattering, energy loss and position resolution only)
- Not necessarily the "final" or best resolution
- High efficiency over all angles (~1-140, define definite boundaries in angle and momentum)
- Efficiency defined based on a reasonable cut on tracking Chi2.
- Studies must include transition between CDC and FDC.
- Goal: create efficiency and momentum resolution plots on log scales (p vs theta) for pions and protons.
- Studies of multi-track events
- Are there any developments here beyond improvements/refinement of 2.? as a function of events with multiple tracks?
- constraining the vertex?
- Refinements/optimizations of the tracking code
- Kalman filters
- reference trajectory methods
- ... work on these to the extent that they impact studies 1-3.