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EICrecon

update for TOF

Dmitry Romanov �Beginning of November 2022

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What is needed for TOF reconstruction

Get TOF hits propagated through reconstruction and CKF Tracking�(done) �
If TOF hits are part of reconstructed tracks - get tracks length, time�(done)�
If track goes to TOF but there is no TOF hits - propagate the track to TOF volumes, find nearest hits in TOF and if hits pass cuts, calculate length, time�(in progress, close to be done)�
Examples for TOF group to start with 1-3

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Conversion of algorithms to JANA2

The goal are:

convert algorithms
try to change the code as less as reasonable possible (so it is still familiar for authors) but to make them more general
make as far as my expertise allows before granting it to tracking experts
Acts v 19.7.0 is used

https://github.com/eic/EICrecon/

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How algorithms are wired together

Juggler/Gaudi algorithms�wired together with python �options scripts

Jana2 factories pattern

JANA2 tries to automate wiring, while manual wiring is possible

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Splitting algorithms to framework independent parts

Gaudi Algorithm with Gaudi properties,�services, includes, etc.

Framework independent, relying only on event model, libraries (like dd4hep) and other non framework related files

Framework related: JANA factories, parameters, services etc - framework related parts invoking algorithms

SiliconTrackerDigi

SiliconTrackerDigi_factory

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Central detector tracking

chain

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TOF endcaps

TOF barrel

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What is needed for TOF reconstruction

Get TOF hits propagated through reconstruction and CKF Tracking�(done) �
If TOF hits are part of reconstructed tracks - get tracks length, time�(done)�
If track goes to TOF but there is no TOF hits - propagate the track to TOF volumes, find nearest hits in TOF and if hits pass cuts, calculate length, time�(in progress, close to be done)�
Examples for TOF group to start with 1-3

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Central detector tracking

chain

TrackProjector

TrackTrajectory

TrackPropagator

TrackSegments�(Track)

TrackTrajectory�

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Related algorithm

TrackProjector - provides projections of tracks for ACTS geometry�(used if hits are a part of reconstructed track)
TrackPropagator - provides track projection to any geometry�(possibly used for everything outside of ACTS geometry)
TrackTrajectory - Provides additional data on track parameters�

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What is needed for TOF reconstruction

Get TOF hits propagated through reconstruction and CKF Tracking�(done) �
If TOF hits are part of reconstructed tracks - get tracks length, time�(done)�
If track goes to TOF but there is no TOF hits - propagate the track to TOF volumes, find nearest hits in TOF and if hits pass cuts, calculate length, time�(in progress, close to be done)�
Examples for TOF group to start with 1-3

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Data models

EDM4hep - A generic event data model for future HEP collider experiments based on PODIO�
EICD - Athena event model based on PODIO very similar to EDM4hep�
EDM4eic - ex. EICD extension of EDM4hep for EIC

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Validation

First TOF efficiency studies are undergoing using algorithms�
Work on integration with existing Benchmarks and CI�

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Summary and status

Get TOF hits propagated through reconstruction and CKF Tracking�(done)�
If TOF hits are part of reconstructed tracks - get tracks length, time�(done)�
If track goes to TOF but there is no TOF hits - propagate the track to TOF volumes, find nearest hits in TOF and if hits pass cuts, calculate length, time�(in progress, close to be done)�
Examples for TOF group to start with 1-3