[Clas12_software] software meeting minutes, May 8, 2014

[Mac Mestayer]

Here are my minutes of today's meeting:

GITHUB: Gagik migrated some software, clasgeom and clasio,
to GITHUB; Johann cleared up some issues of where it should go.
We are still in a trial period to decide whether to switch from
SVN to GITHUB for code version control.

SIMULATION UPDATE: Maurizio showed a demonstration of a new
Forward Tagger (FT) implementation in gemc; very impressive;
the geometry (both passive and active volumes) has been entered
is much detail.  Also impressive was event visualization: tracks
and daughter tracks are shown spatially but also the digitization
response (usually deposited energy) was plotted versus time for
a vaiety of source particles.  A summary of the resultant voltage
vs. time signal from each PMT is calculated and shown.  Raffaella et al.
will study the threshold dependencies of counting rates and will work
on implementing the FT input to the level 1 fast trigger.  In this
work, she will use the HPS experiment's cluster-finding algorithm.

SWIMMING, PLOTTING, FITTING: Dave showed progress that he has made in
the swimming algorithm, esp. improvements to allow a precise end-point
of the track being swum.  He also gave examples of the kind of plots
and fits that his package can perform; all based on a numerical recipes
library that has been developed for Java (forgot the name).

TRACKING: Veronique reported progress on the tracking package.  First,
she credited Sebastian M. with some helpful improvements (List ->
Array List) of her code.  She announced that Justin Ruger is working
on studying the sensitivity of the svt package to misalignments.
She finished with a slide of her object model for the Kalman fitter:
lots of work done; all matrices, state vectors and methods have been
defined.

TIME o'Flight: Jerry is Irish, you know, and he reported that he
has finished a CLAS-Note on his and Alex's work on the TOF code.

Forward Tracker: Raffaella is working on event reconstruction
algorithms.  I think she has learned some Java!

GEOMETRY SERVICE: Johann has received documentation from several
detector groups.  He also has been working with Dmitry on CCDB
implementation.

 			that's all and we adjourned for lunch, Mac

"mestayer at jlab.org", (757)-269-7252