[Clas12_first_exp] RC & TCB meeting

[Francois-Xavier Girod]

Dear Volker

The data I showed in my email is analyzed from the same data Joesph used
This was produced with tag 5a.0.11 which I believe had the larger DC windows

Joseph showed results today based on (in my understanding) one file. He
told me that he would increase his sample and send me the list of files so
we can indeed compare apples to apples

Best regards
FX

On Fri, Feb 23, 2018 at 9:54 PM, burkert <burkert at jlab.org> wrote:

> Francois,
> how were these data analyzed? Are the time windows for the DCs trimmed to
> the same values that Veronique showed to day,  ~250ns for R1, ... or did
> you use the standard values that Mac had included for the data taking,
> which are larger? The difference should be significant because of high
> accidental background. I don't know what Joseph used in the results he
> showed today.
>
> We should have results that can be compared directly. .. apples to
> apples....
>
> Volker
>
>
>
> On 2/23/18 8:35 PM, Francois-Xavier Girod wrote:
>
> For comparison with Joseph's results, please find attached my results for
> the number of hit based track (triangles) and time based tracks (circles)
> per electron per sector (colors)
>
> The change I found from 35 nA (run 2997 cooked with 5a.0.11) to 75 nA (2710)
> is not insignificant, depending on the sector, of the order of 30% +/- 10%
> or so
>
> Note that the electron detection efficiency should drop in this ratio
>
> We discussed next steps in this study, beginning with getting a better
> control over the electron rate with the gated accumulated beam charge
>
> Comments and suggestions are welcome
>
> Best regards
> FX
>
> On Thu, Feb 22, 2018 at 11:04 PM, burkert <burkert at jlab.org> wrote:
>
>> Dear all,
>>
>> Here are the topics we need to discuss at the combined RC/TCB meeting
>> tomorrow 1:30pm in room A110.
>>
>> *Agenda:*
>>
>> 1) RC report (Rafayel)
>>
>> 2) Triggers (Valery, Serguei)
>>
>>     Electron trigger optimization
>>
>>     Hadron Trigger
>>
>>     MesonEx trigger
>>
>>     Prescaled triggers for normalization
>>
>> 3) Tracking efficiencies vs luminosity (Mac, Veronique)
>>
>> 4) Program for the remaining program (all)
>>
>> 5) Any other topics
>>
>>
>> See you all tomorrow.
>>
>> Volker
>>
>>
>>
>> _______________________________________________
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>> https://mailman.jlab.org/mailman/listinfo/clas12_first_exp
>>
>>
>
>
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