[Halld-offline] Offline Software Meeting Minutes, January 26, 2018
marki at jlab.org
Fri Jan 26 15:46:54 EST 2018
Forgot to flip the page on my notebook. A couple more items added to the
minutes on the wiki and reproduced below.
Simulation with Conditions Changing Run-by-Run
Eugene asked about an issue that came up in another meeting. If detector
conditions, for example dead channels, are changing from run to run, are
we able to reflect that accurately in the simulation. There are likely
correlations that make an "average efficiency" calculation with an
"average detector" inaccurate. Thomas remarked that MCwrapper has a
mechanism to simulate events with a population of events, generated with
different configurations in proportion to that in the real data, using
the CCDB's "mc" variation to supply the run-by-run conditions. Mark also
mentioned that we first did this with the simX.X runs in the past.
TOF Anomaly in Monitoring Histograms
Beni reported a feature in the Plot Browser histograms for Spring 2017,
in the :Recon. TOF 2" section. For Monitoring Launch versions 19 and
above, there are no TOF identified protons below 1.0 GeV/c. He cannot
reproduce the effect in his own code. Alex A. told us that this feature
is not there with Simon's new track matching code. There is a problem,
however, since the last reconstruction launch was done with the old
track matching. This problem is likely present in the resulting REST files.
On 01/26/2018 03:26 PM, Mark Ito wrote:
> Please find the minutes below and at
> -- Mark
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