[Halld-tagger] rho beam asymmetry from 2018-01 ver15

[Alexander Austregesilo]

Dear Richard,

I attached the tree to this mail. Besides fit parameters and run 
numbers, it has a leaf for the orientation which is 0/45/90/135 or -777 
for the amorphous runs.

I also added the runs together according to the 7 run block defined here:

https://halldweb.jlab.org/wiki-private/index.php/Spring_2018_Dataset_Summary

The plots in the attached pdf file shows the extracted PSigma value as a 
function of run number. The width of the bands corresponds to the 
uncertainty in PSigma

Unfortunately, the amount or the quality of the data does not allow me 
to observe a clear change in the shape of the polarization as a function 
of energy.

Best regards,

Alex


On 06/24/2018 02:46 PM, Richard Jones wrote:
> Alex,
>
> These data are valuable in trying to understand how drifts in the 
> diamond edge sharpness factor into our physics performance. Is it 
> possible to get these fit result data in the form of a tree? Just the 
> fit parameters and their errors as a function of run number would be 
> great, if possible.
>
> thank you,
> -Richard
>
> On Sat, Jun 23, 2018 at 12:32 PM Alexander Austregesilo 
> <aaustreg at jlab.org <mailto:aaustreg at jlab.org>> wrote:
>
>     Dear colleagues,
>
>     I used the first offline monitoring launch over the full 2018-01
>     data to
>     extract the rho beam asymmetry for beam energies between 8.2 and
>     8.8 GeV.
>
>     The PSigma values  extracted for 0/90 and 45/135 are consistent
>     within
>     0.3% (absolute). You can find the fits to the full data sample in the
>     attachment (rho_fit.pdf).
>
>     I also looked at the individual orientations as a function of run
>     number
>     (rho_run_PSigma.pdf). No visible degradation of the polarization
>     can be
>     seen with the current precision. I will try to group several runs
>     together and look at the polarization as a function of energy to
>     obtain
>     a better handle on this.
>
>     The third plot shows the extracted orientation angle as a function of
>     run number (rho_run_psi0.pdf). The offsets from the nominal
>     orientation
>     are in the order of 5% and seem to be quite stable during the run. In
>     addition, all assignments from RCDB (colors) look correct.
>
>     Best regards,
>
>     Alex
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/halld-tagger/attachments/20180625/d71f6520/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: tree.root
Type: application/root file
Size: 15158 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/halld-tagger/attachments/20180625/d71f6520/attachment-0001.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: rho_batch_PSigma.pdf
Type: application/pdf
Size: 20907 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/halld-tagger/attachments/20180625/d71f6520/attachment-0002.pdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: rho_batch_PSigma_band.pdf
Type: application/pdf
Size: 19488 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/halld-tagger/attachments/20180625/d71f6520/attachment-0003.pdf>