[g13] polarization measurements
Ken Livingston
k.livingston at physics.gla.ac.uk
Fri Apr 23 05:04:41 EDT 2010
Hi Slava,
The information for all the runs is available in a run table which is on
the wiki at
http://clasweb.jlab.org/rungroups/g13/wiki/images/a/a5/G13_allruns.txt
The linearly polarized beamtime started at run 54000. You can use the
info in this table to make up separate runlists for PARA, PERP and AMO,
and also to separate into different lists based on the nominal coherent
peak position (eg. 1.3GeV, 1.5GeV etc)
If you need to use the table in your analysis, a root class to read a
generalized table of that form is described at
http://clasweb.jlab.org/rungroups/g9/wiki/index.php/Rootbeer%2C_including_eloss_and_ExpTable
As far as the polarization is concerned the current state is described here:
http://www.jlab.org/ccc/mail_archives/EXPERIMENTS/g13/CURRENT/msg01026.html
http://www.jlab.org/ccc/mail_archives/EXPERIMENTS/g13/CURRENT/msg01045.html
I'd suggest just using the mean polarizations for each of the coherent
peak positions at the moment.
I'm currently working improved tables for all the linearly polarized
beamtimes, and a corresponding CLAS note which will describe how they
are derived, how to use them, systematric errors etc. I hope that will
be done withing the next few weeks.
Cheers,
Ken
slava at jlab.org wrote:
> Dear all,
>
> I am trying to find polarization measurements for g13b. Here:
> http://clasweb.jlab.org/rungroups/g13/wiki/index.php/Run_List:Polarization
> I could find polarization measurements up to run 53989 (last moller
> measurement).
>
> Then, there is a summary for the g13b period with 1 para and 1 perp values
> for each energy. Is there more detailed information on polarization that I
> can find somewhere?
>
> Best regards,
> Slava
>
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--
=======================================================
Ken Livingston
Dept. of Physics & Astronomy, Tel: +44 141 330 6428
University of Glasgow, Fax: +44 141 330 5889
Glasgow G12 8QQ.
Scotland. UK.
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