[Halld-offline] Offline Software Meeting Minutes, April 29, 2015

Thu Apr 30 10:48:39 EDT 2015

Hovanes,

That is what I thought. Thank you for the clarification, Hovanes.

-Richard Jones

On Thu, Apr 30, 2015 at 10:38 AM, Hovanes Egiyan <hovanes.egiyan at gmail.com>
wrote:

>  Hi Sean,
> MO signal that we have is at ~499MHz (and it will be prescaled before
> arriving to TDCs to much lower frequency),
> but the beam bunches themselves should now arrive to Hall D and the tagger
> hall at ~249MHz frequency.
> Hovanes.
>
>
> On 04/30/2015 09:53 AM, Sean Dobbs wrote:
>
> Hi Richard,
>
> Are you using the latest version of the CCDB constants? I updated the
> rf_period yesterday based on the results of a meeting Paul Mattione had on
> the MO.
>
> I see the following results:
>
> farm1401> ccdb dump /PHOTON_BEAM/RF/rf_period:2933
> #Spring running is at ~2ns period
> 2.004008
>
> From HDGeant:  (Run 2933)
>
>  settofg: beam_bucket_period_ns set to    2.0040081
>
>
>  ---Sean
>
>
> On Thu, Apr 30, 2015 at 8:44 AM Richard Jones <richard.t.jones at uconn.edu>
> wrote:
>
>>  Hello Mark,
>>
>>  From the minutes, "
>>
>>    - *HDGeant now uses RF period in CCDB*. Paul checked in a change such
>>    that HDGeant will look up the bunch frequency from the CCDB when simulating
>>    electromagnetic background. The current setting in the database is 499 MHz.
>>
>>   I am not sure which change that refers to, but yesterday I checked in
>> a change to HDGeant that fits this description. The current setting in the
>> database is close to 250 MHz, not 500 MHz. This is what I see when I run
>> hdgeant with a RUNNO set to a number in the current range, eg 2933:
>>
>>   settofg: beam_bucket_period_ns set to    4.0080161
>>
>>
>>  -Richard Jones
>>
>>   On Wed, Apr 29, 2015 at 4:30 PM, Mark Ito <marki at jlab.org> wrote:
>>
>>> Folks,
>>>
>>> Please find the minutes below and at
>>>
>>>
>>> https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_29,_2015
>>>
>>>   -- Mark
>>> _________________________________________________
>>>
>>>   GlueX Offline Software Meeting
>>> Minutes
>>>
>>> Present:
>>>
>>>    - *CMU*: Curtis Meyer
>>>    - *FSU*: Aristeidis Tsaris
>>>    - *JLab*: Mark Ito (chair), David Lawrence, Paul Mattione, Kei
>>>    Moriya, Nathan Sparks, Justin Stevens, Simon Taylor
>>>    - *NU*: Sean Dobbs
>>>
>>>
>>> Announcements
>>>
>>>    - *Nightly build results on web*. Mark has put the summary of
>>>    nightly build errors and warnings
>>>    <https://halldweb.jlab.org/nightly/nightly_build_errors.txt> on the
>>>    web. He led us through the email
>>>    <https://mailman.jlab.org/pipermail/halld-offline/2015-April/002015.html>
>>>    announcing it.
>>>    - *HDGeant now uses RF period in CCDB*. Paul checked in a change
>>>    such that HDGeant will look up the bunch frequency from the CCDB when
>>>    simulating electromagnetic background. The current setting in the database
>>>    is 499 MHz.
>>>
>>>
>>> Review of minutes from April 15
>>>
>>> We went over the minutes from last time
>>> <https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_15,_2015#Minutes>.
>>>
>>>
>>> David gave us an update on his Geant4 implementation. He as put in the
>>> FDC and FCAL and can reconstruct tracks in the FDC with resolution
>>> comparable with those found with HDGeant. He ran into an issue with
>>> multi-threading; a bug report has been submitted to the Geant4
>>> Collaboration.
>>>
>>> Offline Monitoring
>>>
>>> Kei reported he has run over most of the files collected in the last
>>> week of data-taking. The volume of data is small, it only takes a few hours
>>> to run over everything.
>>>
>>> We then discussed doing a final run over the Fall data so that people
>>> can use the data to prepare for the collaboration meeting. There is a
>>> change to get the setting of the F1-TDC parameters from the CCDB that
>>> Justin checked in yesterday. There are also new TOF timing constants that
>>> we are not taking advantage of yet. In addition Lubomir also has new FDC
>>> alignment numbers. For all of these reasons a re-run seems desirable but
>>> time is running short to have the data available in time to be useful. We
>>> agreed on a launch time target at the end of the day on Friday.
>>>
>>> There was a bit of discussion of what data we have from the current run.
>>> Most of it is in run 2931, which is contained in just over 100 files and
>>> has about 75 million events. Data were taken in mode 7 with an FCAL-BCAL
>>> trigger.
>>>
>>> Spring 2015 Commissioning Simulations
>>>
>>> Sean described the conditions
>>> <https://halldweb.jlab.org/wiki/index.php/Spring_2015_Commissioning_Simulations>
>>> he is proposing and solicited feedback. The software has been tagged but
>>> not released. Paul noted that the nominal position of the coherent peak is
>>> 3.4 GeV. The gxproj4 account will be used to run the jobs.
>>>
>>> On a side note, Mark has put in a request to the Computer Center for a
>>> gxproj5
>>> <https://halldweb.jlab.org/wiki/index.php/GlueX-related_shared_accounts_on_the_JLab_CUE>
>>> account.
>>>
>>> Retrieved from "
>>> https://halldweb.jlab.org/wiki/index.php?title=GlueX_Offline_Meeting,_April_29,_2015&oldid=66573
>>> "
>>>
>>>
>>>     _______________________________________________
>>> Halld-offline mailing list
>>> Halld-offline at jlab.org
>>> https://mailman.jlab.org/mailman/listinfo/halld-offline
>>>
>>
>>
>
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