AliExternalTrackParam4D::PropagateToMirrorX for looper simulation and fits

miranov25 / fastMCKalman

Fast simulation and performance parameterization - primary for ALICE3 and DUNE

MIT License

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AliExternalTrackParam4D::PropagateToMirrorX for looper simulation and fits #10

Closed Trenchcoat95 closed 2 years ago

Trenchcoat95 commented 2 years ago

Created a PropagateToMirrorX function to propagate "loopers" correctly and made changes to other functions accordingly

miranov25 commented 2 years ago

propagateToMirrorX functions

assumes no MB correction
figure with explanation needed
- left side /right side

Mirror transformation:

qPt,sin(phi),tgl - changing sign
alpha is mirrored in respect to symmetry plan
local Y and local Z - propagated along arc assuming constant curvature

Covariance matrix update;

for the moment without correlation
position += L^2* sigma(angle2)
angles += L^2 *sigma(curvature)

miranov25 commented 2 years ago

Index fix - to be described

The index of the cluster in snot the same as index of the layer. In case of the TPC no difference as all layers has the same properties - but problem for non homogenous detector

The names for the index and layer should be swapped. The layer index should be member of track - to check ...

miranov25 commented 2 years ago

The Z>1 particle removed - to be reintroduced later

miranov25 commented 2 years ago

The code not yet fully working but be merged to master, we will fix it there.

problem in the ReconstructParticleFull
normal reconstruct is working

miranov25 commented 1 year ago

Relates to #9