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

Thu Apr 30 10:38:54 EDT 2015

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 <mailto: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
>     <mailto: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 <mailto:Halld-offline at jlab.org>
>         https://mailman.jlab.org/mailman/listinfo/halld-offline
>
>
>
>
> _______________________________________________
> Halld-offline mailing list
> Halld-offline at jlab.org
> https://mailman.jlab.org/mailman/listinfo/halld-offline

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/halld-offline/attachments/20150430/e1ad2dac/attachment-0001.html 