[G12] EC Bug

[albayrak at jlab.org]

I did mention about this and how we solved it in the G12 meeting, and I
was not the one who solved that problem by writing a separate routine. I
brought this up in the G12 meeting. You were not in that meeting, there
were only three of us, Johann, myself and another person. It was Johann
who wrote that routine and explained me how to use it. I don't know
whether it is standard or non-standard build. I used whatever he gave me
and followed his instructions.

Regards,

Ibrahim

> Greetings,
>
> Ibrahim did not mention any bug in the EC uvw reconstruction, no did he
> show how he worked around it with any routine.
> The routine he uses is not in the standard build, therefore he wrote his
> own routine to correct this and never reported it.
>
> If he had, I along with the other G12 lepton people, would have made it
> a point to put it in the standard/paolone build.
> This could cost months of simulation redoing and skimming for us.
>
> I respectful request to be given the member function called ECuvw() so
> that I may put in into the build.
>
> BR
> MK
>
> On 2/26/14 8:13 PM, Pawel Nadel-Turonski wrote:
>> Mike,
>>
>> I think that Ibrahim did bring up the issue of the EC at some point. And
>> Ibrahim’s workaround seems to work
 Fixing the routine would make things
>> a little easier, perhaps.
>>
>> Regarding sector 5, I think the issue is that the pedestals were not
>> correctly set originally - and no fix was made during cooking. We had a
>> similar issue in the second half of g13 after someone swapped out an ADC
>> during the run. If so, there is not much one can do beyond what Ibrahim
>> does - except to recook with better pedestals (no way of fixing it
>> completely, though, since the lost data are lost)
>>
>> Cheers,
>>
>> 	Pawel
>>
>> On Feb 26, 2014, at 8:07 PM, Michael C. Kunkel <mkunkel at jlab.org> wrote:
>>
>>> Greetings,
>>>
>>> It appears that there is a bug in clasEvent. It also appears that
>>> Ibrahim knew of this bug and never reported it.
>>> I can say this because if I look at his code he used for the EC study,
>>> he has a new member function that is not is the standard build of
>>> clasEvent. The plots he shows
>>> https://clasweb.jlab.org/rungroups/g7/wiki/images/3/36/Iha_EC_study.pdf
>>> cannot be reproduced with the variables in the standard clasEvent build
>>> because there is a bug in the extraction of the EC_w() (w position in
>>> the EC).
>>>
>>> I have tried several workarounds, but to no avail. I can infer the dead
>>> stips by the dead line seen in either u or v, but cannot do it for w.
>>> As you can see from the link to Ibrahims study, sector 5 has many dead
>>> strips in the w coordinate.
>>>
>>> I am attaching a plot of what I can do reconstruct in sector 5.
>>>
>>> Thoughts?
>>>
>>> BR
>>> MK
>>> <pim_ecuvw_phi_sec5.gif>
>