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Babu Bhandari, 11/12/2013 09:03 AM


Welcome to the working group wiki on the FNAL redmine site. We are the umbrella working group for coordinating simulation and reconstruction efforts for the Far Detector at Homestake, SD. Conveners are: Eric Church, Tom Junk, Mike Kirby, Matthew Szydagis, Stan Seibert, and Brian Rebel. We are actively seeking workers.

See the link below under Projects. The goal is to assign names to the items on the list. Please contact or with your suggestions of where/how you'd like to pitch in. We should state here that most work is intended to be performed within LArSoft, so you will not be starting from scratch: support and suggestions for getting going are ready and available. Some standalone (NEST, Geant4 and Chroma) efforts have proved useful along the way for LBNE FD studies, and in some instances that may not be an inappropriate way still to explore some issues on the list. But the plan is to get this all under the LArSoft banner starting now.

In the future, LBNE specific simulation code repository, distinct from LArSoft's, will be at this redmine site and there will be a "Repository" link above on the banner along with "Overview, Activity, ... Documents, Wiki, ...."


For a description of how a geometry with wires wrapped around an APA can be generated and used in LArSoft, see the LArSoft Wiki Geometry page.

LBNE Geometries


Samples for the 10 kT Far Detector

Samples for the 4-APA Smaller Geometry Far Detector -- this geometry is made for computational

Samples for the (OLD) 35T Prototype Detector

Sample for the 35T Detector with 4-APA Geometry

Most of the immediate issues that LBNE LArSoft currently faces can be studied and solved in the smaller FD workspace geometry, with 36 and ~45 degree U/V wires easily compared. Even algorithms to link up particles across multiple APAs can be developed in the FD 4apa geometry.

These samples will also be made for the new 35t design with 4 APAs (checked into LArSoft as lbne35t4apa.gdml).

Next to be made in both 35t and FD (In smaller geometry if at all reasonable):

  • High-energy muons (GEANTinos?) -- For the easiest disambiguation, 2D and 3D "straight line" finding (cluster/track finding), linking up tracks across APA gaps, calorimetric adjustments at APA gaps, and more?
  • Single particle electron showers, at various energies -- For the most basic shower scenarios, clustering, 3D reconstruction / calorimetry, effects of the APA gaps on all of these
  • CRY


Documentation on its way.

-Efficient Hit Finding
-Disambiguation (Trivial, Crawl, Endpoints, Comparing views, Cluster based):

Here is a discussion on Hit Ambiguity.


Analysis of hit finding and disambiguation quality are interrelated; there will be an analysis module to look at both of these things.


Far Detector Simulation, Reconstruction, and Analysis Task List