Note: the following is an "annotated" agenda, where after the meeting I (RJF) have added names and notes to a number of the tasks. These notations are shown emphasized.

Agenda for GeN analysis meeting June 2, 2006

See Minutes from our last meeting

Status report

• Aidan - (reported by Todd) worked on target tests and setting up the target in the target-lab. He is responsible for understanding the NMR polarimetry.
• Alexandre - wants to be able to get the different hardware settings (HV, thresholds) out of the runs to track when changes happen
• Ameya - worked on compass, target documentation. Will be dealing with scintillator timing, Rf analysis, and EPR analysis.
• Brandon - run summary tables, and beam position (Raster) analysis
• Jonathan - ND database documentation
• Nerses - documentation (see below)
• Rob - ND geometry
• Seamus - documetation (see below), and investigating/cutting-out cross-talk in MWDC's: sees time-structure of hits separated by ~7ns
• Sergey - documetation (see below)
• Shige - has related experience from GeN measurement from D2 for Monte-Carlo studies
• Tim Ngo

Tasks

• Documentation (EPICS variables, calibration procedures, etc.)
  • Nerses has set up a Wiki at (onsite or via ssh-tunnel) http://yerphi/wiki. There are trigger diagrams (from Sergey), channel mapping info, EPICs variable lists (underway; please contribute).
    I would like any new documentation to be centralized and put under the Wiki
  • It was generally agreed that we need some automated database for containing information gleaned from the runs. Due to the large number tables of different sizes that will be wanted, a relational database (eg: mySQL) is probably the way to go. Want to be able to record variables, and then comments and confidence notes about them.
  • Brandon is working on a run-summary table.
  • Ameya has documented the target's condition.
  • Seamus has put together the documentation for the changes to the agen library, BB tracking, and answers to common questions.
  • Sergey is looking through the HALOG and ELOG for relevant changes and recording them in a systematic way. Should be worked into the database.
  • Jon is working on the ND database documentation.
  • Gregg would like a block diagram for the MWDC electronics (ADB boards in particular)
• Geometry checks - Jon and Rob have made some rough-checks of the ND geometry. Brandon will interface with Eugene on the BigBite and ND survey results
• ND calibration - Jon
• Shower calibration - Sergey
• Scintillator calibration - Ameya
• MWDC calibration (time offsets, time-to-distance) - Brandon, Seamus
• BB optics calibration - Seamus, Ole
• BB track reconstruction - Seamus, Ole
• ND cluster reconstruction - Rob
• BB to ND (to Rf) timing calibration - Ameya, Jon
• Database revisions
  1. Note all hardware changes to explain all new DB directories
  2. Come up with a "minimal" database
  3. Have ONE db_run.dat file to track the configuration changes, just sym-linked between the directories.
  4. Test on ~10% of the data (one run per day?) to verify quality
• Target polarimetry - Ameya (EPR), Aidan (NMR)
• Beam polarimetry - will need database to link the polarization information to the different runs (half-wave-plate state, etc) - Sergey
• BB Field direction (Compass) - Bogdan, Arie Beck
• Monte-Carlo studies (pion backgrounds, rescattering effects) - Gregg Franklin, Ole, ...

Timeline

Before a complete replay, we need to:

1. Analyze at least one run from each day
2. Run calibration/checking scripts on each of these runs; note the changes

Future

There is the DNP meeting in October which we should send some speakers to, for at least instrumentation reports on GeN.

Prepared by Robert J. Feuerbach, feuerbac@jlab.org, 5-June-2006