sPHENIX HCal discussion

[Martin Purschke <purschke AT bnl.gov>]

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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