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

[gasparan at jlab.org]

  That is very good, let's have a short but a complete presentation
 in tomorrow's meeting to see what part is understood and what else
 needs to be done to finish it soon.

 Thanks,
 Ashot


> 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
>> >
>> >  1. Dial Toll-Free Number: 1-888-240-2560 (from US and Canada
>> excluding
>> >     Hawaii and Alaska)
>> >     For the list of numbers to call in from a foreign country, please
>> >     visit: http://bluejeans.com/numbers
>> >
>> >  2. Enter the Meeting ID, followed by #
>> >     Meeting ID: 6017317348
>> >
>> > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>> <<<<<<<<<<<<<
>> >
>> > Maxime
>> > _______________________________________________
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>>
>>
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>
>
>
> --
> Chao Peng
> Department of Physics
> BOX 90305
> Duke University
> Durham, NC 27708
>