sPHENIX HCal discussion

["Lajoie, John G [PHYSA]" <lajoie AT iastate.edu>]

Hi Martin, Stefan, Dan, Silas - 

Wow - way to go!  This is really getting exciting. From past experience I 
know how tricky it can be to get the timing set up properly. 

Congrats!  Now go outdo yourselves on Monday. 

John



-----Original Message-----
From: sPHENIX-HCal-l <sphenix-hcal-l-bounces AT lists.bnl.gov> On Behalf Of 
Martin Purschke via sPHENIX-HCal-l
Sent: Saturday, January 28, 2023 12:48 AM
To: sphenix-hcal-l AT lists.bnl.gov
Subject: [Sphenix-hcal-l] one-half of the Outer HCal read out with the real 
DAQ

Dear all,

to close out the week with some more good news -

After today's ribbon-cutting event, Stefan, Dan (Richford), Silas, and I 
spent the afternoon reading out the west half of the Outer HCal with the 
"real" DAQ system, using pulser data. In this morning's Commissioning Task 
Force meeting, Stefan had outlined the cabling-checking and other test 
procedures, where this exact setup will be used.

For today, we concentrated on pulser data, where charge is injected into the 
preamps. We ran out of steam also trying the LEDs today as it was getting 
late. We will continue to work on this on Monday.

In addition to the Outer HCal, this is using and exercising most of the 
elements of the real DAQ system - the readout through the DCM2s, the GL1 and 
the GTM, firing test pulses and the readout via modebits, the clock fanout, 
Steve's test pulse generator, and also some online monitoring.

We also succeeded in exercising a timing-in procedure that has been outlined 
at the Dec. collaboration meeting.

To the best of our knowledge, this is the largest "piece of sPHENIX" 
read out together so far. The east half can follow as soon as the fibers are 
hooked up.

A few summary slides of what we did, how this works, and a quick look at the 
data are at

https://www.phenix.bnl.gov/~purschke/oHCal_2023_01_27.pdf

Have a good weekend!

        Martin, Stefan, Dan, and Silas


-- 
Martin L. Purschke, Ph.D.        ;   purschke AT bnl.gov
                                  ;   http://www.phenix.bnl.gov/~purschke
                                  ;
Brookhaven National Laboratory   ;   phone: +1-631-344-5244
Physics Department Bldg 510 C    ;   fax:   +1-631-344-3253
Upton, NY 11973-5000             ;   skype: mpurschke
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