[Halld-physics] Polarization values

[Michael Dugger]

Richard,

In the coherent peak I use the tagger energy. For energies outside the 
coherent peak, I use the PS. I use the PS outside the coherent peak 
because of statistics.

For the Spring 16 priority set, I use the tagger energy for energies 
bewteen 8.4 and 9.4.

For the Spring 17 runs, I use the tagger energy for energies between 8.2 
and 9.3.

As long as people are within the energy ranges given above, the tagger 
energy is being used to bin the data.

If you don't like the mixing of PS and tagger for the energy binning, I 
can easily modify the code so that only tagger information is used. For 
the most part, it will just pump up the error bars for the energy regions 
outside the coherent peak.

Take care,
Michael

On Tue, 19 Sep 2017, Richard Jones wrote:

> Mike,
>
> These are very nice results, good to see that the spread between the
> different polarization orientations is now much less than we were seeing
> before, esp. 2017.
>
> One question about the energy scale. Are you using the tagger energy to
> decide which bin each event should go into? Now that we know the PS energy
> is entangled with the polarization, to produce a spectrum free of artifacts
> we should only be using the tagger energy to make this spectrum.
>
> -Richard
>
> On Tue, Sep 19, 2017 at 10:08 AM, Michael Dugger <dugger at jlab.org> wrote:
>
>>
>> Hi,
>>
>> I have code that creates the polarizations for
>> Spring 16 (priority set 1) and Spring 17 data
>> at
>>
>> https://userweb.jlab.org/~dugger/triPol/makePolValsV2.tar
>>
>> Once you have un-tarred the file, go through the steps in
>> the README file to generate the polarizations.
>>
>> Take care,
>> Michael
>>
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>