[G12] EC Bug

[Pawel Nadel-Turonski]

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>