sPHENIX EMCal discussion

[John Haggerty <haggerty AT bnl.gov>]

Megan, Sean, and I have put together a first version of the 
configuration spreadsheet of the calorimeter electronics.  It's in docDB 
here:

> https://docdb.sphenix.bnl.gov/cgi-bin/private/ShowDocument?docid=25

Ultimately, it will contain channel assignments for all the 
calorimeters, but for now it has mostly Inner HCAL information (because 
that is almost finished).  As we finish the rest of the detectors, we 
(or you) can update this document.

The philosophy for the cabling that Megan and I agreed on is to make it 
simple to see that calorimeter towers are wired correctly by looking at 
it and counting.  That makes it easy to put back if we take anything 
apart, but for analysis that will require knowledge of the geometry, it 
may make the raw ordering of channels seem obscure.  I think that should 
be taken care of by careful organization of any output objects we construct.

By the way, the raw prdf data will look exactly like packet 21101 in any 
of these files taken in T-1004 in 2014 or in the HCAL lab:


> /sphenix/sim/sim01/user04/sphenix/bnl/buffer/
> /sphenix/sim/sim01/user04/sphenix/t1044

namely, 144 channels of 24 12 bit bipolar samples.

Megan and John

--
John Haggerty
email: haggerty AT bnl.gov
cell: 631 741 3358