[Eg6_analysis] IC calibration

[Dupré Raphaël]

Dear Stepan,

Mohammad has comparisons for missing energy and other variables too,
he can show them in a future meeting. In particular, the RMS for
missing energy was reduced for incoherent (I did not see coherent). We
chose to illustrate with the pi0 mass peak since it is simpler to
interpret, we do not expect contamination effects and it depends only
on photon kinematic and energy.

Best,

On Tue, Aug 27, 2013 at 2:46 PM, Stepan Stepanyan <stepanya at jlab.org> wrote:
> Hello Mohammad,
>
> My first thoughts will be it does not matter what corrections you will use.
> Just keep in mind that getting a narrower pi0 peak is not the ultimate goal.
> The goal is to get energy and angles of photons measured correctly, since
> that is what will end up in your calculations of kinematics for DVCS.
>
> Regards, Stepan
>
>
> On 8/26/13 12:07 PM, Mohammad Hattawy wrote:
>>
>> Dear all,
>>    Following the work of IC calibration. Firstly, i corrected the energy
>> and the time dependence separately which can be found in the link
>> (https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/User:Hattawy/IC_calibration
>> ). A new Method of correcting both at the same time is done and can be found
>> in the link
>> (https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/IC_calibration).
>>    As a result, from the side of the number of DVCS events, both methods
>> gave almost the same numbers, while a gain of 0.4  MeV in the width of the
>> reconstructed signal of pi0 has been achieved with the second method.
>>    Suggestions and comments are welcome.
>>
>>
>> --
>> Best regards,
>> Mohammad Hattawy.



-- 
Raphaël Dupré