[Clas12_first_exp] CLAS12 First Experiment 03/13/19

Mon Mar 18 18:01:23 EDT 2019

Dear Andrey

No I did not use RCDB

I used the 10 decoded files from pass0 and counted the number of events in
each of these files there
I then used the number of raw files stored on /mss/clas12 to estimate the
total number of events for each run
This neglects the last file of the run which is not full, but this is
negligible

Best regards
FX

On Mon, Mar 18, 2019 at 10:58 PM Andrey Kim <kenjo at jlab.org> wrote:

> Dear FX,
> Do you read number of events per run from RCDB? There is a range of runs
> where the number of events seems to be wrong. I have included accumulated
> number of events to the timeline:
> https://clas12mon.jlab.org/rga/stats/timeline/
> The runs between between 4146 and 4163 seem to have exaggerated values in
> RCDB and bring the ratio between IN/OUT to 62%/38%
> Andrey.
>
>
>
> On Mon, Mar 18, 2019 at 5:24 PM Francois-Xavier Girod <fxgirod at jlab.org>
> wrote:
>
>> Dear Andrey, all
>>
>> With the 10.6 GeV charges you show, I am getting 32% outbending and 68%
>> inbending
>>
>> This is a bit different from what I obtained counting the raw number of
>> events (triggers)
>>
>> I think the livetime was not very different but the trigger rate was
>> 3932 spring outbending 17 kHz
>> 4013 spring inbending 14 kHz
>> 5036 fall inbending 13 kHz
>> 5664 fall outbending 20 kHz
>>
>> If I try to correct for this effect I get:
>> inbending:
>> (0.14*85.27 + 0.13*47.78) / (0.17*24.367 + 0.14*85.27 + 0.13*47.78  +
>> 0.2*39.045) = 60%
>> outbending:
>>  (0.17*24.367 + 0.2*39.045) / (0.17*24.367 + 0.14*85.27 + 0.13*47.78  +
>> 0.2*39.045) = 40%
>>
>> These numbers reproduce quite closely what I obtained by counting the
>> number of events in all the files from the pass0 selection
>> I am not sure which way to count is more correct. I said before that the
>> outbending is more favorable both for DVCS and the exclusive phi so maybe I
>> should not insist on this point, but for physics purpose we are interested
>> in the number of events, not really the Fcup charge directly.
>>
>> Best regards
>> FX
>>
>> On Mon, Mar 18, 2019 at 9:44 PM Andrey Kim <kenjo at jlab.org> wrote:
>>
>>> I split different energies apart:
>>> https://clas12mon.jlab.org/rga/stats/timeline/
>>> spring inbeding 6GeV: 0.819 mC
>>> spring outbeding 6GeV: 1.68 mC
>>> spring outbeding 10GeV: 24.367 mC
>>> spring inbeding 10GeV: 85.27 mC
>>> fall inbeding 10GeV: 47.78 mC
>>> fall outbeding 10GeV: 39.045 mC
>>>
>>>
>>>
>>> On Mon, Mar 18, 2019 at 2:23 PM Andrey Kim <kenjo at jlab.org> wrote:
>>>
>>>> It's integrated over all energies. But it makes sense to separate them
>>>> I'll do it now.
>>>> Andrey.
>>>>
>>>> On Mon, Mar 18, 2019 at 11:47 AM Eugene Pasyuk <pasyuk at jlab.org> wrote:
>>>>
>>>>> Andrey,
>>>>>
>>>>>
>>>>>
>>>>> Is it for 10.6 GeV only or includes low energies as well?
>>>>>
>>>>>
>>>>>
>>>>> -Eugene
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> *From:* Clas12_first_exp <clas12_first_exp-bounces at jlab.org> *On
>>>>> Behalf Of *Andrey Kim
>>>>> *Sent:* Monday, March 18, 2019 11:23 AM
>>>>> *To:* Latifa Elouadrhiri <latifa at jlab.org>
>>>>> *Cc:* clas12_first_exp at jlab.org
>>>>> *Subject:* Re: [Clas12_first_exp] CLAS12 First Experiment 03/13/19
>>>>>
>>>>>
>>>>>
>>>>> Following last week discussion, I have calculated accumulated charge
>>>>> for inbending and outbending data for RG-A using IPM2C21A:
>>>>> https://clas12mon.jlab.org/dev/rga/stats/timeline/
>>>>>
>>>>> We collected:
>>>>>
>>>>> 86.090 mC during spring inbending
>>>>>
>>>>> 26.047 mC during spring outbending
>>>>>
>>>>> 47.780 mC during fall inbeding
>>>>>
>>>>> 39.045 mC during fall outbending
>>>>>
>>>>>
>>>>>
>>>>> I used start/end times from RCDB. I remember we had some issues with
>>>>> RCDB at some point when not all runs were stored there. Did it happen
>>>>> during RGA data taking or RGK?
>>>>>
>>>>> Best,
>>>>>
>>>>> Andrey.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Mon, Mar 11, 2019 at 6:26 AM Latifa Elouadrhiri <latifa at jlab.org>
>>>>> wrote:
>>>>>
>>>>> Dear all,
>>>>>
>>>>> We will have our CLAS12 First Experiment meeting Wednesday March 13,
>>>>> 2019 at 8:30 in F224/25
>>>>>
>>>>> The agenda of the meeting includes:
>>>>>
>>>>> *RGA Spring 2019:*
>>>>>
>>>>>    - Run Plan/Shifts/Run coordinator list
>>>>>    - Plans for online calibration/data processing
>>>>>
>>>>> *RGA_Fall/Spring 2019*
>>>>>
>>>>>    - Status of data processing/disk space organization
>>>>>    - Status of Alignment and plan for next steps of data calibration
>>>>>    - Timeline Monitoring status
>>>>>    - First look at the processed data
>>>>>    - Others
>>>>>
>>>>> Please let me know by this evening if you have any questions and if
>>>>> you would like to give a presentation
>>>>>
>>>>>
>>>>>
>>>>> Best regards,
>>>>>
>>>>> Latifa
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Clas12_first_exp mailing list
>>>>> Clas12_first_exp at jlab.org
>>>>> https://mailman.jlab.org/mailman/listinfo/clas12_first_exp
>>>>>
>>>>> _______________________________________________
>>> Clas12_first_exp mailing list
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>>>
>>
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