[Halld-cal] [EXTERNAL] Re: BCAL timing in 2017 and 2018

Sean Dobbs sdobbs at fsu.edu
Fri Jan 24 12:23:42 EST 2020 

Yes, mc_generic is a variation that derives from mc, so since we
usually run on the mc variation, we can ignore this most recent entry.

Cheers,
Sean

On Fri, Jan 24, 2020 at 12:20 PM Elton Smith <elton at jlab.org> wrote:
>
> Hi Sean,
>
> Indeed, tdiff_u_d looks very suspicious. There is a specific mc entry
> for only 30000-40000. The latest entry is for mc_generic, but it may be
> that the MC defaults to the previous entry that specifies the
> 30000-40000 range
>
>
> ifarm1802:gen_2pi_primakoff>ccdb vers BCAL/tdiff_u_d | grep mc
>   79812  2017-06-13 14-08-53    2017-06-13 14-08-53 mc_generic      0L-inf
>   79803  2017-06-12 14-03-25    2017-06-12 14-03-25 mc
> 30000L-40000L
>   7685   2015-11-19 16-38-14    2015-11-19 16-38-14 mc              0L-inf
>
> Cheers, Elton.
>
> Elton Smith
> Jefferson Lab MS 12H3
> 12000 Jefferson Ave STE 4
> Newport News, VA 23606
> (757)269-7625
> (757)269-6331 fax
>
> On 1/24/20 11:09 AM, Sean Dobbs wrote:
> > Hi Elton,
> >
> > Thanks for looking into this.  I don't think that any TDC constants
> > would affect things since I believe we still aren't using TDC times in
> > the higher levels of reconstruction.
> >
> > I wonder if /BCAL/tdiff_u_d is being used in the reconstruction.
> >
> > See: halld_recon:src/libraries/BCAL/DBCALHit_factory.cc, lines 287-290
> >
> > gxproj3 at ifarm1901 scripts> ccdb vers /BCAL/tdiff_u_d | grep mc
> >   79812  2017-06-13 14-08-53    2017-06-13 14-08-53     mc_generic
> > 0L-inf
> >   79803  2017-06-12 14-03-25    2017-06-12 14-03-25     mc
> > 30000L-40000L
> >   7685   2015-11-19 16-38-14    2015-11-19 16-38-14     mc
> > 0L-inf
> >
> > Cheers,
> > Sean
> >
> > On Fri, Jan 24, 2020 at 10:54 AM Elton Smith <elton at jlab.org> wrote:
> >> Hi Sean and Mark,
> >>
> >> I have taken a quick look at BCAL timing constants that might be
> >> changing for the MC. See below. From what I can tell all constants have
> >> mc data sets covering from 0L-inf, except for timewalk_tdc and
> >> timewalk_tdc_c4. Could these be causing the problem?
> >>
> >>
> >>
> >> ifarm1802:gen_2pi_primakoff>printenv | grep -i connection
> >> SSH_CONNECTION=129.57.82.214 64865 129.57.70.23 22
> >> CCDB_CONNECTION=mysql://ccdb_user@hallddb.jlab.org/ccdb
> >> RCDB_CONNECTION=mysql://rcdb@hallddb.jlab.org/rcdb
> >>
> >>
> >>
> >> ifarm1802:gen_2pi_primakoff>ccdb vers BCAL/ADC_timing_offsets | grep mc
> >>    349    2014-09-17 22-25-24    2014-09-17 22-25-24 mc              0L-inf
> >>    269    2014-07-28 14-48-52    2014-07-28 14-48-52 mc              0L-inf
> >>    179    2014-06-17 15-19-20    2014-06-17 15-19-20 mc              0L-inf
> >> ifarm1802:gen_2pi_primakoff>ccdb vers BCAL/base_time_offset | grep mc
> >>    21638  2017-01-17 13-47-45    2017-01-17 13-47-45 mc              0L-inf
> >>    21637  2017-01-17 13-43-49    2017-01-17 13-43-49 mc              0L-inf
> >>    7553   2015-08-19 13-11-04    2015-08-19 13-11-04 mc              0L-inf
> >>    7543   2015-07-30 14-45-39    2015-07-30 14-45-39 mc              0L-inf
> >>    7532   2015-07-23 14-38-06    2015-07-23 14-38-06 mc_evio         0L-inf
> >>    7531   2015-07-23 08-49-26    2015-07-23 08-49-26 mc_6gev         0L-inf
> >>    7530   2015-07-23 08-49-12    2015-07-23 08-49-12 mc              0L-inf
> >>    336    2014-09-17 22-23-27    2014-09-17 22-23-27 mc              0L-inf
> >> ifarm1802:gen_2pi_primakoff>ccdb vers BCAL/timewalk_tdc | grep mc
> >> ifarm1802:gen_2pi_primakoff>ccdb vers BCAL/timewalk_tdc_c4 | grep mc
> >> ifarm1802:gen_2pi_primakoff>ccdb vers BCAL/channel_global_offset | grep mc
> >>    7684   2015-11-19 16-38-14    2015-11-19 16-38-14 mc              0L-inf
> >> ifarm1802:gen_2pi_primakoff>ccdb vers BCAL/TDC_offsets | grep mc
> >>    348    2014-09-17 22-25-21    2014-09-17 22-25-21 mc              0L-inf
> >>    268    2014-07-28 14-48-49    2014-07-28 14-48-49 mc              0L-inf
> >>    178    2014-06-17 15-19-14    2014-06-17 15-19-14 mc              0L-inf
> >>
> >>
> >>
> >> Elton Smith
> >> Jefferson Lab MS 12H3
> >> 12000 Jefferson Ave STE 4
> >> Newport News, VA 23606
> >> (757)269-7625
> >> (757)269-6331 fax
> >>
> >> On 1/24/20 9:57 AM, Sean Dobbs wrote:
> >>> Hi all,
> >>>
> >>> We ran out of time at the Calorimetry meeting, but I wanted to bring
> >>> this email that I sent last week up again, to see if anyone had any
> >>> thoughts (or maybe the issue was resolved offline?).  This seems
> >>> crucial for anyone analyzing data.
> >>>
> >>> Cheers,
> >>> Sean
> >>>
> >>>
> >>> On Tue, Jan 14, 2020 at 6:11 PM Sean Dobbs <sdobbs at fsu.edu> wrote:
> >>>> Hi all,
> >>>>
> >>>> The discrepancies that Jon Zarling has seen between runs in the
> >>>> 30000's and 40000's
> >>>> (https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_HDGeant4_issues_138&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=c-_tH8evYLC4MjBfbp0hiQ&m=bg_IXzqYQJjEPLmMwJGH1St3kILY4fM4wKKQyqQZv6s&s=u8ONG-wYb3Dt1x9D-l1BBmRtbu1qw1-xCbph3Vst7h4&e= ) were brought up
> >>>> in today's HDGeant4 meeting.  Differences between run periods are
> >>>> surely due to some difference in the calibration constants used.
> >>>>
> >>>> I wonder if someone could remind me what the difference between how we
> >>>> did timing calibrations in 2017 and 2018 was?  I noticed that
> >>>> /BCAL/tdiff_u_d had non-zero values in the 30000's and was zeroed out
> >>>> in the 40000's.
> >>>> Frankly, I can't remember what was done right now and couldn't find
> >>>> out where it was written down.   This is relevant to the simulations
> >>>> since this table is applied when calibrating digihits, but isn't
> >>>> compensated for in mcsmear.  But maybe I'm not remembering an
> >>>> important piece to the puzzle...
> >>>>
> >>>> Cheers,
> >>>> Sean
> >>>>
> >>>>
> >>>> ifarm1402.jlab.org> ccdb cat BCAL/tdiff_u_d:41509:mc | head -n 15
> >>>> +------------+
> >>>> | tdiff_u_d  |
> >>>> | double     |
> >>>> +------------+
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> | 0.0        |
> >>>> <SNIP>
> >>>> ifarm1402.jlab.org> ccdb cat BCAL/tdiff_u_d:31001:mc | head -n 15
> >>>> +------------+
> >>>> | tdiff_u_d  |
> >>>> | double     |
> >>>> +------------+
> >>>> | 0.3226     |
> >>>> | 0.3226     |
> >>>> | 0.3226     |
> >>>> | 0.3226     |
> >>>> | 0.1294     |
> >>>> | 0.1294     |
> >>>> | 0.1294     |
> >>>> | 0.1294     |
> >>>> | -0.1444    |
> >>>> | -0.1444    |
> >>>> | -0.1444    |
>

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