Solid Tracking

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document

Weizhi's note in 2018

https://solid.jlab.org/cgi-bin/public/ShowDocument?docid=96

Weizhi's result with SAMPA https://solid.jlab.org/cgi-bin/private/ShowDocument?docid=95

Digitization

input for tracking, closely related

see details in the link

resolution

The call function and resolution files are at

https://jlabsvn.jlab.org/svnroot/solid/subsystem/gem/resolution/v1

see "readme" for details

Xin Qian's input

Things to do and learn from tracking

  • Need to define input and output data structures for tracking code
    • Output from tracking should be standardized so we can easily compare


  • Condiderations
    • With and without magnetic fields
    • With field, is there p dependence
    • GEM clustering dependence
    • Calorimeter and other detector information
    • Potential improvements
    • Dead areas in GEMs
  • Benchmarks
    • Tracking rate
    • Tracking efficiency (#of real tracks reconstructed/# of real tracks)
    • Effect of noise in fits (hits replaced with noise)
    • Pure noise tracks (ghost tracks)
    • Multi-track reconstruction efficiency
    • Helicity dependence of reconstruction (efficiency *and* quality)
    • Noise correlation between planes effects
  • Benchmark conditions to map
    • Background rates 0 - x5
    • Background rate derivatives (for helicity dependence)
    • Uncorrelated - correlated backgrounds
    • Readout strip configuration: x/y vs. r/phi

Tracking Roadmap

  • Input and output
    • Develop GEMC banks output standards
    • Create implement GEM hit <-> banks interface for digitization code
    • Create library for loading banks output, clustering for tracking code
    • For library, interface with Hall A analyzer, ROOT output
  • Can be done in parallel:
    • Implement other algorithms
    • Evaluate benchmarks

slide

Resolution update https://hallaweb.jlab.org/dvcslog/SoLID/22

Xin's comment on 2011/09/21 http://hallaweb.jlab.org/12GeV/SoLID/download/tracking/for_Nilanga.pdf

Calibration and resolution from GEM hits