[Sane-analysis] Sane Meeting at 3:30pm Thurs Feb 12th in f227

[Whitney R. Armstrong]

Hi Oscar,

I also want to note that a big change only came when I started over from 
scratch. That is, I reset all the calibration coefficients. 

It appears that Hovannes  had worked the coefficients into a local minima. This 
only started to become apparent when I did my "cross cut" that removed the 
corners which contained most of the (bad) events that created this minima.  
This prompted led me to reset all the coefficients.

Cheers,
Whit

On Thu, Feb 12, 2015 at 02:25:28PM -0500, anusha at jlab.org wrote:
>Dear Oscar,
>Yes, earlier calibration constants were included properly. I meant to the
>correct calibration constant file. We didn't see much effect. However, may
>be it had few MeVs changed. Will find those plots.
>
>The E diff axis units on the plots are in GeV. I have using the proton
>energy loss =ON for the simulation.
>
>Best Regards,
>Anusha
>
>
>
>> Hi Anusha,
>>
>> Very neat. I have one suggestion: it could be that the earlier Whit's
>> calibration was not being properly included in the elastics analysis,
>> like what was happening at the beginning with the new one. Could you
>> check that, to see if Whit's "intermediate" calibration was any better
>> than Hovhannes original one? It would be interesting to see how the
>> calibration improvements progressed.
>>
>> Also, I think your E diff axis units are GeV, right? So is the SIMC ~32
>> MeV offset (mean of your fit) the proton energy loss that Mark
>> mentioned? Or did you run SIMC with proton ionization loss on? I'm
>> asking because the new calibration offset could then be just ~46 MeV (78
>> - 32).
>>
>> Cheers,
>>
>> Oscar
>>
>> anusha at jlab.org wrote:
>>> Nice improvement of the E_HMS-e_clust with new Bigcal calibration
>>> constants !!
>>>
>>> Here is the new energy difference,
>>>  https://userweb.jlab.org/~anusha/SANE/newgain/newgainandcorr_feb2015.gif
>>>
>>> and it's comparison with SIMC
>>> https://userweb.jlab.org/~anusha/SANE/newgain/newgainandcorr_simc_data_feb2015.gif
>>>
>>> Best REgards,
>>> Anusha
>>>
>>>> Sane Meeting at 3:30pm Thurs  Feb 12th  in f227
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