aidaTT

tracking toolkit developed in the AIDA project

C.Rosemann, Y. Voutsinas, F .Gaede, DESY, June, 2015

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A brief introduction can be found in ./doc/description/description.pdf ( after running: cd ./doc/description ; make ).

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Release notes

v00-05

F. Gaede

• replaced GSL with Eigen for Vector5 and fiveByfiveMatrix
  • needs Eigen Headers to be installed
  • removed simpleFitter for now (depends on GSL and is used nowehre)

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v00-04

F. Gaede

• added set/getMass() methods to trajectory
• removed default pion mass in
• computeQMS()
• computeEnergyLoss() mass has to be explicetly provided as argument
• made compatible with c++11
• removed -ansi -pedantic -Wno-long-long
• fixed narrowing in initializer lists

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v00-03

• many changes, fixes and updates (for details, see svn -v log )

F.Gaede

• added material_ntuples.cpp to create ntuple with material properties from model and surfaces

• drawx0.C makes comparison plots for x0

• fixed scattering matrices (setting off diagonal elements to 0.)

• implmented cone intersection using a newtonian method

• added optional use of streamlog

• adapted lcio_tracks.cpp to (re)fit tracks including material effects

• fixed some compiler warnings

• fixed geometry initialization for examples ( added IGeometry& instance(const std::string& initString ) )

• added example material_effects/check_materials.cpp

• cleaned up trajectory class ( documentation, code,...)

  • fixed issue w/ energy loss for jacobian
  • removed unneeded members and methods
    • surface intersections, bfield,...

• fixed issue w/ calculation of curvilinear coordinate system (use s==0.)

• pulls for central muons are now as good as w/ DDKalTest

• finished first implementation of taking energy loss into account for initial track parameters:

  • trajectorElements now hold a track state that is valid until the next element
  • track states are computed in addMeasurment/addScatterer
  • implemented pointAt/tangentAt for trajectory with many track parameters

• moved energy loss calculation to materialutils.cc

• updated examples to using IGeometry instead of DD4hepGeometry

• some code cleanup ...

• cleaned up geometry interface:

  • made IGeometry a singleton
  • implemented access to B field map
  • added doxygen documentation

• added materialUtils.hh

  • computeQMS ( needs debugging )

• added a track state to trajectoryElement

• restrucured code base:

  • renamed helixGymnastics.hh to helixUtil.hh
  • removed helixHelpers.hh -> combine all helix relates utilitiy functions in helixUtil.hh -> combine fitting releated helper functions in utilities.hh
  • documented helix functions
  • created second version taking only Vector5 and Vector3D as arguments to have less overhead when used outside aidaTT
  • cleaned up definition of track parameterization -> access functions defined in trackParameterizationLCIO.hh
  • moved Vector3D, Vector5 and fiveByfiveMatrix to core
  • renamed helpers to util

• added implementations of Vector5 and fiveByFiveMatrix using the Eigen library for later use ...

• bug fix for intersection calculation w/ cylinders:

  • return solution w/ positive s if both solutions are ~equal

• bug fix for calculation of phi from x,y:

  • take abs(dphi) to be less than M_PI

• added code to treat 1D measurements (commented out for now)

• write out Millipede-2 file for debugging in GBLInterface

• restrict intersections to first half arc of the track

• GBLInterface

• calculate only intersections with positive s and sort list

• fix calculation of qms

• changed IFittingAlgorithm, GBLInterface and trajectory to be able to return more than one result (at different sites) for the fit

Y.Voutsinas

• calculating energy loss only in surfaces that are considered scatterers

• correction in the calculation of particle's energy

• first implementation of energy loss - still needs some debugging & testing

• modify trajectoryElement as to obtain an element that isn't a scatterer or a measurement, use IP as such an element and add it to the trajectory

• re-implement seeding and iterative fitting in the example, removing some not necessary debugging output

• modifying function intersectsWithinZCylinderBounds in order to return both solutions and not only the closest one

• correcting the sign in the calculation of qop

• fixing a bug in the calculation of the first's element arc-length & modify the lcio_tracks example in order to cope with TPC tracks

• crosschecking the system's transformations

• unitTests/finalTrackTest.cc adding test to check the creation of an lcio track from an aida track

• adding test of covariance matrix in initial track parameters test

• test for comparing the trajectory cov. mat with the one that is written out to lcio track

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v00-02

F.Gaede:

• fixed major memory leak in Vector5 and fiveByFiveMatrix ( unneeded alloc in assignment operator)

• made c'tors and accessors in Vector5 and fiveByFiveMatrix more efficient by removing unneeded range checks and initializations

Y.Voutsinas:

• adding test for functions calculateCurvature & calculateLambda
• correcting transformation from perigee to L3

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v00-01

C. Rosemann:

• first release:
  • implementation of GBL fitting using a DD4hep model that provides DDRec::Surfaces
  • implementation of multiple scattering still under validation.