[Halld-offline] Calorimetry reconstruction

[David Lawrence]

Hi Mihajlo,

    We are now starting to look at busier events where there are more 
realistic backgrounds in the GlueX detector. It has caused 2 issues to 
emerge with the calorimeter reconstruction. (I'm assuming you're still 
the go-to guy on this).

1.) When following the prescription at:

http://www.jlab.org/Hall-D/software/wiki/index.php/HOWTO_simulate_and_analyze_b1pi_events

I see nearly 10 reconstructed DPhotons on average even though only 2 are 
generated for each event. I haven't looked closely at the nature of 
these, but off hand it seems 10 is just too many.


2.) The FCAL code is currently not thread-safe to the point that you 
pretty much are guaranteed to crash if you run it with more than thread. 
A quick scan of the code shows things like this as a member of the 
DFCALCluster class:

static const userhits_t* fHitlist;

It may be a simple as making these static data members non-static. Could 
you have a look to see if you can make the FCAL reconstruction thread safe?


Regards,
-David

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 David Lawrence Ph.D.
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