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

Sean Dobbs s-dobbs at northwestern.edu
Thu Apr 30 11:53:25 EDT 2015 

Sorry. Disregard the last email. Paul suggested a couple things to look at
in data, so I am making a couple plots to make sure that I ( at least)
understand what is going on.

----Sean
On Thu, Apr 30, 2015 at 10:50 AM Sean Dobbs <s-dobbs at northwestern.edu>
wrote:

> 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
>>>>>> "
>>>>>>
>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>
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