LBNE Far Detector Software Data Model

This page documents D. Adams attempts to understand the LBNE EDM (event data model), i.e. the classes describing the data share by modules via the event data store and written to event data files.

Simulation

The following table lists the EDM classes used in the simulation.

Class	Location	Description
MCTruth	nutools/SimulationBase	ID, PDG ID, status code and starting and ending position and momentum for each input MC particle
MCParticle	nutools/SimulationBase	ID, PDG ID, status code and starting and ending positions and momenta for each MC particle
SimChannel	larsim/Simulation	Energy deposited by each MC particle in the volume for each readout channel

Reconstruction

The following table lists the EDM classes used in the reconstruction.

Class	Location	Description
RawDigit	lardata/RawData	Raw (convoluted) ADC signals in time slices. Unpack with raw::Decompress in RawData/raw.h
Wire	lardata/RecoBase	Deconvoluted signal for each channel.
Hit	lardata/RecoBase	Peaks on wire signals.
Cluster	lardata/RecoBase	Associated hits in a TPC plane, i.e. 2D tracks. Association to hit.
SpacePoint	lardata/RecoBase	Space point formed by combining hits from different planes. Association to hit.
Track	lardata/RecoBase	Trajectory with momentum. Association to space point, hit, cluster
PFParticle	lardata/RecoBase	Reconstructed particle? Association to cluster, space point, track, seed, vertex.
Seed	lardata/RecoBase	Space point with direction. Used by Pandora.
Vertex	lardata/RecoBase	Vertex position. Association with PFParticle. Used by Pandora.

Plans to update the reconstruction model are described in a talk by Gianluca.

Code browsing

DUNE

Repository
lbnecode	Redmine		git

LArSoft

Repository
larsoft	Redmine	LXR
larcore	Redmine	LXR
lardata	Redmine	LXR
larevt	Redmine	LXR
larsim	Redmine	LXR
larreco	Redmine	LXR
larana	Redmine	LXR
...

Supporting products

Repository
art	Redmine	LXR
nutools	Redmine

For more LArSoft links, see the LArSoft core installation page.

Monte Carlo Production for 35 ton

This section is under construction.

The above data model is used for the MC (Monte Carlo) samples produced for the 35-ton prototype detector. Five different reconstruction paths are followed: standard reconstruction without use of MC, with full cheat that makes extensive use of MC information and half-cheat that uses MC only to resolve TPC ambiguities. In addition, Pandora is run in standard and half-cheat modes. The following table lists the names of the producers for these reconstruction paths and the types of data products they produce. The name and type can be used to retrieve each data product.

Reconstruction chains

Path	Wire	Hit	Cluster	Track	SpacePoint	Calorimetry(?)
Standard (no cheat)	caldata	gaushit, hit35t	fuzzy	(kalmanhit)
Standard (no cheat)		gaushit, hit35t	dbcluster	costrk, stitch	costrk, stitch	calo
Standard full cheat		hitcheat	clustercheat	trackcheat
Standard half cheat		dcheat	fuzzydc
Standard half cheat		dcheat	dbclusterdc	costrkdc, stitchdc	costrkdc, stitchdc	calodc
Another half cheat?		fasthit, fasthitdc

Reconstruction producers

Nickname	Full name(s)	Inputs	Output types
Reco	Reco	All below
caldata	lbne35t_calwire	daq (RawDigits)	Wire
gaushit	lbne35t_gaushitfinder, gaus_hitfinder	caldata	Hit
hit35t	lbne35t_hitfinder35t	gaushit	Hit
fasthit	lbne35t_fasthitfinder, standard_fasthitfinder	caldata	Hit
fasthitdc	lbne35t_disambigcheat, standard_disambigcheat	gaushit	Hit
hitcheat	lbne35t_hitcheater, standard_hitcheater		Hit	hit35t