[Frost] Missing EPIC bank in g9a DSTs?

Stuart Fegan s.fegan.glasgow at gmail.com
Fri Jun 8 09:49:20 EDT 2018


Hi FROST,

I've been looking at some of the g9a files on tape recently, just a few, 
but there doesn't seem to be an EPIC bank in any of the ROOT DSTs I've 
looked at so far (/mss/clas/g9a/production/pass1/v1/ROOT/).  Without an 
EPIC bank, my current analysis code can't work out diamond orientations, 
or look up the polarisation tables.  I thought I'd been unlucky and just 
picked random runs that had no EPIC bank, but I cross-referenced my 
archives and tried another one I know was in my analysis. Still nothing.

Before I spend days figuring this out, I thought I'd check with the 
rungroup and see if anyone knows/remembers what's going on. Does the 
EPIC information (at least for diamond orientation and coherent peak 
position) survive in another bank?  Or should I be going back to the BOS 
files?

If anyone's interested in what I'm trying to do, I'm trying to verify 
that the strangeness skims I have from my PhD are still valid, as I 
produced them many years ago primarily as a way to make the data more 
manageable.  I'm sure I didn't throw any events away at the time, but I 
decided to make sure before producing new results.  I'm also looking to 
duplicate Hideko's pi0 analysis as a sanity check for some work one of 
the GW grad students (Chan Kim) is currently doing on the same channel, 
so a skim for that would be useful too.

Hope someone can help, and that it's something really stupidly easy that 
I should have worked out myself with a little thought...

Cheers,

Stuart

-- 

Dr Stuart Fegan
Honorary Research Associate
Nuclear Physics Group
University of Glasgow
(Currently at George Washington University)

E-mail: s.fegan.glasgow at gmail.com



More information about the Frost mailing list