[clas12_rgk] [EXTERNAL] rgk timelines
Francois-Xavier Girod
fxgirod at jlab.org
Mon Apr 6 08:45:07 EDT 2020
Sorry Dan one more question as I am reviewing the calibration timelines
Is it possible that some of these specifications depend on energy and/or
torus polarity?
For instance RGK DC residual widths seem better than RGA, but I do not know
if they could still be improved
On Mon, Apr 6, 2020 at 1:21 PM Daniel Carman <carman at jlab.org> wrote:
> Francois,
>
> In my presentation at the RG-A pass-1 review, I presented details of the
> current calibration
> quality for the RG-A 2018 inbending portion of the run. See
> https://clas12-docdb.jlab.org/DocDB/0005/000569/002/rga-pass1-02282020.pdf
> I did not discuss stability or variance allowance vs. run number. That was
> more of a group
> judgment call. In the future we will be more quantitative, but we were not
> in position to do
> that for this pass-1 cooking.
>
> Regards,
> Daniel
>
>
> *****************************************************************************
> *
> *
> * Dr. Daniel Carman e-mail: carman at jlab.org <carman at jlab.org>
> *
> * Staff Scientist office: (757)-269-5586
> *
> * Jefferson Laboratory web: http://userweb.jlab.org/~carman *
> *
> *
>
> *****************************************************************************
>
>
>
> On Apr 6, 2020, at 7:14 AM, Francois-Xavier Girod <fxgirod at jlab.org>
> wrote:
>
> Thanks a lot for the clarifications
>
> Is there a document specifying what is “good enough” then?
> Otherwise we can just take the RGA achievements in their approved cooking
> range I guess
>
> It seems to me that RGK still has quite a bit of calibration work to do at
> the moment
>
> On Mon, Apr 6, 2020 at 1:11 PM Daniel Carman <carman at jlab.org> wrote:
>
>> Francois,
>>
>> The RG-A fall 2018 run period that is being cooked is in the range from
>> 5032 to 5419. The
>> run range from 4760 to 5031 will be investigated shortly. The
>> calibrations were not finished
>> for this period because there were so many changes ongoing with regard to
>> trigger, timing,
>> and voltage changes, that identifying only a few reference runs were not
>> so simple. The plan
>> is to come back to this period after the outbending cooking gets underway.
>>
>> As for what defines “good enough” for the calibration of each subsystem,
>> this was guided
>> overall by the system specifications convoluted with what could be
>> achieved at the current
>> time given the state of calibrations, reconstructions, and alignments.
>> The calibration timelines
>> before the start of the inbending cooking were reviewed by the subsystem
>> folks and by the
>> RG-A folks in detail in the days leading up to the start of pass-1
>> cooking.
>>
>> For your specific questions on the DC, the calibration suite and
>> calibration of reference run
>> was available only in the last few days before cooking began. The
>> fluctuations in the residual
>> mean vs. run number are still being explored and a plan to reduce the
>> variations is being
>> considered (e.g. correlating variations with atmospheric pressure). This
>> is still a ways off in the
>> future, so we could not delay the start of pass-1 cooking for the first
>> publication.
>>
>> Regards,
>> Daniel
>>
>>
>> *****************************************************************************
>> *
>> *
>> * Dr. Daniel Carman e-mail: carman at jlab.org
>> <carman at jlab.org> *
>> * Staff Scientist office: (757)-269-5586
>> *
>> * Jefferson Laboratory web: http://userweb.jlab.org/~carman *
>> *
>> *
>>
>> *****************************************************************************
>>
>>
>>
>> On Apr 6, 2020, at 7:02 AM, Francois-Xavier Girod <fxgirod at jlab.org>
>> wrote:
>>
>> Dear Dan
>>
>> Thank you
>>
>> Is there a subrange that was approved for cooking from this link, or was
>> the full range from 4763 to 5655 approved? I see some fluctuations outside
>> the range 4913 to 5540 for instance FD electron RF time. DC mean residuals
>> also show fluctuations comparable to their sigma
>>
>> Maybe I misunderstand what the calibration quality specifications are
>>
>> Best regards
>> FX
>>
>> On Mon, Apr 6, 2020 at 12:18 PM Daniel Carman <carman at jlab.org> wrote:
>>
>>> Francois,
>>>
>>> The timelines are posted at: https://clas12mon.jlab.org
>>>
>>> If you select RG-A, the latest timeline for RG-A 2018 is 2.2.8 (done
>>> just this weekend for the
>>> ongoing outbending studies), but the previous timelines in the list,
>>> 2.2.5a, were used as the
>>> based of approval for the RG-A fall 2018 inbending cooking.
>>>
>>> Regards,
>>> Daniel
>>>
>>>
>>> *****************************************************************************
>>> *
>>> *
>>> * Dr. Daniel Carman e-mail: carman at jlab.org
>>> <carman at jlab.org> *
>>> * Staff Scientist office: (757)-269-5586
>>> *
>>> * Jefferson Laboratory web: http://userweb.jlab.org/~carman *
>>> *
>>> *
>>>
>>> *****************************************************************************
>>>
>>>
>>>
>>> On Apr 6, 2020, at 6:13 AM, Francois-Xavier Girod <fxgirod at jlab.org>
>>> wrote:
>>>
>>> Dear Annalisa, all
>>>
>>> Do we have a link to RGA corresponding timeline that was approved for
>>> cooking? So we have a reference to judge fluctuations
>>>
>>> Thanks
>>>
>>> Best regards
>>> FX
>>>
>>> On Mon, Apr 6, 2020 at 8:54 AM Annalisa D'Angelo <
>>> annalisa.dangelo at roma2.infn.it> wrote:
>>>
>>>> Dear All,
>>>>
>>>> the RGK pass0 timelines are ready ad available at
>>>>
>>>> https://clas12mon.jlab.org/rgk/pass0/v2.2.2/tlsummary/
>>>>
>>>> please take a look at them to check for instabilities which may need
>>>> calibration of additional runs.
>>>>
>>>> All the best
>>>>
>>>> Annalisa
>>>>
>>>> --
>>>> ================================================
>>>> Prof. Annalisa D'Angelo
>>>> Dip. Fisica, Universita' di Roma "Tor Vergata"
>>>> Istituto Nazionale di Fisica Nucleare
>>>> Sezione di Roma Tor Vergata, Rome Italy
>>>> email:annalisa.dangelo at roma2.infn.it
>>>> Jefferson Laboratory, Newport News, VA USA
>>>> Email: annalisa at jlab.org
>>>> Tel: + 39 06 72594562
>>>>
>>>>
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>>
>
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