sPHENIX EMCal discussion

[John Haggerty <haggerty AT bnl.gov>]

There have been a number of issues with data from the first rack, 1E3, 
as we got it going on Monday.  A jseb2 fiber was out of place yesterday 
but after about noon today the 8 fibers we had plugged in on Monday 
seemed to start and stop runs up to ~1 kHz without major problems, 
although there seem to be 2 missing ADC's in the first few events quite 
often, in random packets.  We can live with that for a while.  I think 
there is a hang with forced accepts much above a kHz, but that will also 
take some more testing.

After starting and stopping a dozen runs, I pushed in the second DCM in 
the dcmgroup, which tests the token passing.  The DCM looked like it was 
initializing from the pattern of the busy lights flashing during 
initialization, but I never got data from any of the packets in the 
added DCM (data from the first DCM seemed ok, though).  We used to have 
a token passing test, but I'm not sure it's still workable; we haven't 
needed to run with 2 DCM/PM for a long time.

I thought we might have some confusion with fibers from the ADC's 
through the patch panel, but it looks ok to me.  I attached a sketch of 
how I found the fibers at the ADC, DCM, and JSEB.

On 2023-03-27 20:10, Martin Purschke wrote:
> Dear all,
>
> John, Dan and I set up the readout of the EmCal rack 1E3 today. Among
> the bigger news and changes are the fact that we run from the actual
> seb00.sphenix.bnl.gov machine in its final (minus the inevitable
> tweaks) configuration - a first!
>
> With that comes the ability to write the data directly to the
> bufferboxes, and from there we can just "cp" to the RCF/SDCC.
>
> In the phnxrc account we set up a new "operations" directory
>
> > [phnxrc@seb00 ~]$ ls -l operations/
> > total 5
> > drwxr-xr-x 2 phnxrc sphenix3 6 Mar 27 19:00 emcal
> > drwxr-xr-x 2 phnxrc sphenix3 8 Mar 27 18:06 HCal
>
> and an ad-hoc "standard" where (for now) ${HOSTNAME}_setup.sh points
> to the right setup script for a given machine -
>
> > [phnxrc@seb00 emcal]$ ls -l
> > total 7
> > -rw-r--r-- 1 phnxrc sphenix3 1433 Mar 27 18:30 
> > libconfuse_emcal_1E3.txt
> > -rw-r--r-- 1 phnxrc sphenix3 2074 Mar 27 19:00 
> > rcdaq_setup_emcal_1E3.sh
> > lrwxrwxrwx 1 phnxrc sphenix3   24 Mar 27 19:43 seb00_setup.sh -> 
> > rcdaq_setup_emcal_1E3.sh
>
> The filerules have been adjusted to go to the bufferboxes' 
> "commissioning" area:
>
> >   -- defined Run Types:
> >           cosmics - 
> > /bbox/commissioning/emcal/cosmics/cosmics-%08d-%04d.prdf
> >              junk - /bbox/commissioning/emcal/junk/junk-%08d-%04d.prdf
> >               led - /bbox/commissioning/emcal/led/led-%08d-%04d.prdf
> >         led_tower - 
> > /bbox/commissioning/emcal/led_tower_by_tower_hcal/led_tower.prdf
> >          pedestal - 
> > /bbox/commissioning/emcal/pedestal/pedestal-%08d-%04d.prdf
> >            pulser - 
> > /bbox/commissioning/emcal/pulser/pulser-%08d-%04d.prdf
>
> After some flailing, and after all was working alright, we took two
> good runs tonight to look at,
>
> > [phnxrc@seb00 emcal]$ ls -l /bbox/commissioning/emcal/junk/
> > total 1095484
> > -rwxr--r-- 1 phnxrc sphenix3   78118912 Mar 27 19:40 
> > junk-00004286-0000.prdf
> > -rwxr--r-- 1 phnxrc sphenix3 1043652608 Mar 27 19:42 
> > junk-00004287-0000.prdf
>
> with slow, 1Hz forced-accepts in 4286 and then faster, like 500Hz,
> triggers in 4287.
>
> After Dan had found one not-properly connected fiber, all packets check 
> in ok:
>
> > [phnxrc@seb00 emcal]$ dlist -e 3  
> > /bbox/commissioning/emcal/junk/junk-00004287-0000.prdf
> > Packet   6009  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
> > Packet   6010  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
> > Packet   6011  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
> > Packet   6012  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
> > Packet   6013  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
> > Packet   6014  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
> > Packet   6015  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
> > Packet   6016  5981  0 (Unformatted)    93 (IDDIGITIZER_31S)
>
> and they look like proper pedestal events.
>
> Just to exercise this, I transferred the data to the SDCC file system,
> where they appear under /sphenix/lustre01/sphnxpro/commissioning/ :
>
> > purschke@rcas2067 ~ $ ls -l 
> > /sphenix/lustre01/sphnxpro/commissioning/emcal/junk/
> > total 1095488
> > -rwxr--r-- 1 sphnxpro sphenix   78118912 Mar 27 19:40 
> > junk-00004286-0000.prdf
> > -rwxr--r-- 1 sphnxpro sphenix 1043652608 Mar 27 19:42 
> > junk-00004287-0000.prdf
>
> (this is exactly what we'll be doing with the real data once we run
> with beam.) So, a good day's work.
>
> Just so that our HCal friends who are subscribed to this list don't
> feel left out - we are also able to read out the HCal (both E+W
> simultaneously) with the respective SEB machines. More about that in a
> separate mail later or tomorrow morning.
>
> Best,
>
>         Martin + John + Dan.

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

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