h1. 2016-08-23-SwC

h2. Software & Computing Issues

Software & Computing Issues:

* Software

** Tracker:

*** Inefficiency at low pt: PK & AD to look at it

*** NaN bug: bug identified, pending fix in MAUS trunk

*** Charge reconstruction bug: has been flagged, tracker group to investigate

** TOF:

*** Discrepancy between TOF & tracker of ~100 ps: Scott Wilbur starting to investigate by looking at TOF0-TOF1 path-length effect

** Global: 

*** TRef issue in data structure holding back Global track matching from going into production processing. This has now been fixed -- need some performance tests before going into production.

** Field handling

*** Need to account for PRY effect in MAUS fields -- cumbersome (no manpower) to generate OPERA maps for each current setting

*** Correction factors (at 4T) received from HW/JP

*** Need to run some sample reconstruction with different scale factors to test

** MC:

*** G4BL generation is bottle neck

*** FD to look at this next

**** Consider TOF0 as G4BL-MAUS handoff point -- needs to be tested by pushing through both G4BL & MAUS and comparing

*** FD to provide G4BL generation scripts, DM will run them on GRID

**** Also need some versioning/book-keeping cleanup of G4BL inputs

* Infrastructure

** -Working on creating a DB table to hold alignment corrections to surveyed geometry- (#1817)

*** Table & associated software API have been created (JM), opened to developers, RB is testing

*** corrections will be applied at geometry download time, transparent for end-user

** Reconstruction quality table has been created along with API (JM)

*** Reco flags will come from a post-processing job

**** 4 bits for each detector (count 11 detectors including RFs from Cooling Demo)

*** DR developing post-processing & quality extraction infrastructure

* Data reprocessing

** Data to be re-processed with next MAUS release once tracker bugs are fixed

*** may have Global in this iteration as well

** Will like to have alignment corrections coming from the CDB table (above) for this round of processing

*** RB & JM away, so this might not converge for this release, but..

* 

|_.Issue               |_.Item                                                     |_.Persons        |

|Tracker               |NaN bug          |PK, AD           |

|                           |Charge reconstruction                                   |PK, AD          |

|                           |Inefficiency at low pt                                                 |PK, AD          |

|Global               |Data structure issue          |JG, AD         |

|Geometry               |Alignment corrections from CDB          |RB, JM         |

|MC               |G4BL          |FD, DR, DM         |

|                           |Speed                                  |DR, AD         |

|Infrastructure              |Reco quality          |DR        |