[d2n-analysis-talk] Updated db_L.vdc.dat

Brad Sawatzky brads at jlab.org
Tue May 4 18:10:59 EDT 2010


Hi Dave,

We reference some runs in the db_run.dat from the Transversity period
where there LHRS was at 16 degrees.  Can you update the L.off_*
to whatever Transversity was using and send me a new db_run.dat file?

On a related note, there are a few different db_L.vdc.dat files in our
DB right now (the first field is the md5 checksum):
  087065188b15a14a50949a6328c5bbdc  ./20081116/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090117/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090127/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090205/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090206/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090208/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090210/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090211/db_L.vdc.dat
  087065188b15a14a50949a6328c5bbdc  ./20090211/db_L.vdc.dat.1
  087065188b15a14a50949a6328c5bbdc  ./20090306/db_L.vdc.dat

  176595b1714129fa7882f8507a085afa  ./20090212/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090213/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090214/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090215/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090216/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090217/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090223/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090225/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090226/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090301/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090302/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090303/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090304/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090309/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090310/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090311/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090312/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090313/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090315/db_L.vdc.dat
  176595b1714129fa7882f8507a085afa  ./20090316/db_L.vdc.dat

Clearly most get replaced by your new file.  The early runs (pre 2009-02-06)
have the LHRS at 16 degrees during the Transversity run.

Note that we will also need updated optics for the positive polarity runs.  We
took data for this during Transversity -- you should be able to copy their
'positive LHRS setting' optics and tweak/cross-check it the way you did the
negative (electron) coeffs.

-- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov


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