[Halld-offline] Offline Software Meeting Minutes, October 29, 2014

[Mark M. Ito]

Folks,

Find the minutes below and at

https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_29,_2014

   -- Mark
____________________________________________


Minutes

Present:

  * *CMU*: Will Levine
  * *Kansas City*: Paul Mattione
  * *JLab*: Alex Barnes, Sean Dobbs, Paul Eugenio, Mark Ito (chair),
    David Lawrence, Kei Moriya, Simon Taylor, Aristeidis Tsaris


Review of Minutes from October 15

We went over the minutes from the last meeting 
<https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_15,_2014#Minutes>. 


Simulated HDDM to EVIO Conversion

Sean has enhanced the fix to the 100-ns-Shift/effective-time-cut issue 
<https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_September_17,_2014#100_ns_Shift_Issue:_an_effective_time_cut> 
by adding a cut on the maximum time that will appear in the 
EVIO-formatted file. This emulates the hardware in that the time window 
read-out need not correspond the time window generated in simulation. 
This change was prompted by Kei noticing that the number hits from the 
Time-of-Flight in simulated data often exceeded the maximum set by the 
convert-to-EVIO program. This in turn was due to the 1.6 μs window in 
recent simulated data to capture all hits in tracking chambers with 
their long drift times. Each detector system has an independently 
adjustable time window now.

Version Management

Mark gave a talk 
<https://halldweb1.jlab.org/wiki/images/1/19/Versioning.pdf> at last 
week's Calibration Meeting on his software-version specification system. 
The system has been incorporated into the current GlueX Install 
<https://halldweb1.jlab.org/wiki/index.php/Scripts_for_Installing_GlueX_Software> 
system.

itrack, track, and the Truth

We decided to postpone discussion of this change 
<https://mailman.jlab.org/pipermail/halld-offline/2014-October/001847.html> 
until either Richard or Justin can lead it.

BCAL Dark Noise Hits

Will and David explained the current problem with dark noise hits in the 
BCAL. The rate is about right but our assumption about the amplitude of 
the hits is off. In addition the calibration scheme subtracts dark 
energy from the hits.
The plan is to take real data with a random trigger to assess the real 
situation now that the BCAL in installed and instrumented.
This will be discussed at the BCAL Reconstruction Meeting tomorrow.

Commissioning Simulations

Sean presented preliminary rate estimates from his analysis of recent 
EM-background-only simulations with the commissioning geometry. See his 
slides 
<https://halldweb1.jlab.org/wiki/images/6/6e/GlueX_Calib_20141029.pdf> 
for the plots. Assumptions:

  * 100 nA electron beam
  * 10 μm Al radiator
  * 2 mm plastic target


Rates are presented in kilohertz for both field on (1200 A) and field 
off. Estimates for all detector systems are included.
Sean also reviewed a recent Normalization of Commissioning Beam 
Simulations email from Richard Jones 
<https://halldweb1.jlab.org/wiki/index.php?title=Normalization_of_Commissioning_Beam_Simulations_email_from_Richard_Jones&action=edit&redlink=1> 
on how to convert the number of hits in the simulation runs to detector 
rates with the given conditions.

Offline Data Monitoring

Paul M. moderated the discussion.

  * David is working on a scheme to copy root files from the Gluon
    Cluster to the work disk in the Computer Center so they can be
    viewed on the web.
  * Simon had updated several code components for the PS
     1. geometry in HDDS
     2. hit routines in HDGeant
     3. sim-recon hit objects for PS and PSC
     4. monitoring histograms for online monitoring
      o Digi-hits have not been addressed yet.
  * Kei reported on work establishing the online monitoring histogram
    generation in the offline environment.
      o No plugins yet for TAGM
      o FDC plots have been added
      o Pedestal calculations are still work in progress.
      o Plots for other detectors based on 1M events with no EM bg: run
        9101 <https://halldweb1.jlab.org/wiki/images/9/93/9101.pdf>
        (1200 A solenoid current) run 9102
        <https://halldweb1.jlab.org/wiki/images/2/22/9102.pdf> (no
        solenoid current)
      o He is in the process of writing and testing scripts for running
        offline monitoring.
  * Paul reported for Justin. There have been improvements in the web
    pages for viewing offline monitoring data to improve the user
    experience. See the links below.
      o Run Browser
        <https://halldweb1.jlab.org/cgi-bin/data_monitoring/ver0.2/runBrowser.py>

      o Time Series
        <https://halldweb1.jlab.org/cgi-bin/data_monitoring/ver0.2/timeSeries.py>

  * Sean is trying to collect the various items of online information
    such as run start and end times, EPICS variables, configuration
    settings and the like, for inclusion in the offline monitoring
    database.
  * The goal is to be ready to start running jobs as soon as beam data
    becomes available in the tape library.

Retrieved from 
"https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_29,_2014"

  * This page was last modified on 31 October 2014, at 20:08.


-- 
Mark M. Ito, Jefferson Lab, marki at jlab.org, (757)269-5295

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