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

Sean Dobbs s-dobbs at northwestern.edu
Thu Apr 30 11:50:46 EDT 2015 

Hopefully can settle it before your plane lands ;)
On Thu, Apr 30, 2015 at 10:45 AM Mark Ito <marki at jlab.org> wrote:

>  Richard, Sean, Hovanes, et al.,
>
> First let me apologize for my mistake in attribution in the minutes.
> Richard checked in the changes to have HDGeant get the bunch frequency from
> the CCDB, not Paul. Thanks to him for doing that. I will amend the minutes
> presently.
>
> As far as what the frequency actually is now, yesterday Paul said that he
> had just come from a "master oscillator meeting" and that we are running at
> 2 ns bunch spacing. I have the utmost respect for both Paul and Hovanes,
> but they can't both be right here. ;-)
>
>
>   -- Mark
>
>
> On 04/30/2015 11:32 AM, Sean Dobbs wrote:
>
> Thanks, Hovanes, for clearing this up, and sorry for the confusion. I will
> update CCDB accordingly.
>
> ---Sean
> On Thu, Apr 30, 2015 at 9:48 AM Richard Jones <richard.t.jones at uconn.edu>
> wrote:
>
>>  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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>>
>
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