[PRad] Weekly meeting on Friday 11/04/16

[Chao Peng]

Hi Ashot,

I believe the linearity part in snake run was studied by Ilya, which showed
that lead tungstate part is similar to it was in PrimEx, but lead glass
part had abnormal non-linearity constants.

We thought this might due to boosters for lead glass modules were not
working during the experiment., so the behavior is strange due to the high
local rates in snake runs.
Ilya also did a quick non-linearity study on physics run, and the lead
glass part is much better in the physics runs, which supported this
assumption.

To summarize, Ilya has already done the non-linearity study for the snake
runs. However, the results cannot be applied directly to the physics runs
due to the booster issue (and different type of particles and different
incident angles).
So Weizhi is working on the non-linearity study for physics runs. We can
discuss this in details during the meeting.

Best Regards,
Chao

On Fri, Nov 4, 2016 at 2:16 AM, <gasparan at jlab.org> wrote:

>
>   Hi Maxime and All,
>
>  I agree, but let us finish the HyCal tagger calibration first,
>  and then if there is a time left we include the GEM.
>  The following items are not discussed in the last meeting:
>  include the
>  a) calibration (last time was the physics calibration only
>     based on the original Ilya's calibration constant)
>  b) linearity for the different parts of HyCal
>  c) understanding the transition region (without this we can not
>     move to the physics part)
>  d) calibration of the first crystals;
>  c) trigger inefficiencies (if it is ready).
>
>  For sure, we will discuss any new results also.
>
>  Ashot
>
>
> > A reminder about Friday's meeting in F227 from 9 to 10 am.
> >
> > This meeting will be mainly focused on efficiencies from the calibration
> > run, both for gem and hycal.
> > Of course other presentation are also welcome.
> >
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> >
> >  You can have access to the screen sharing through this URL:
> >  https://bluejeans.com/6017317348
> >
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> >
> >  2. Enter the Meeting ID, followed by #
> >     Meeting ID: 6017317348
> >
> > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> <<<<<<<<<<<<<
> >
> > Maxime
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-- 
Chao Peng
Department of Physics
BOX 90305
Duke University
Durham, NC 27708
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