Commissioning and running of sPHENIX

[Stefan Bathe <stefan.bathe AT baruch.cuny.edu>]

Minutes shift change 2023-05-13

general
—————
- 9 o’clock meeting:  
  - collisions two days delayed -> Friday morning +/- 2 days
  - STAR needs 14 h access Tuesday to fix TPC
- mice still a problem; Kin sent email

evening (Raghav)
- few issues during sweep
  - closed plug door, debris around
  - Jen saw EMCal cooling box open

night (Brennan)
- mostly uneventful
- got call in middle of night about beam
  - called MVTX expert just to confirm
- INTT interlocks
  - Rob Pisani:  monitor from ignition, not from DO -> remove from shift log 
request

Day (Ben)
- 8:00 switched to controlled, then restricted access (key tree enabled also 
in restricted access)
- mouse

MBD (Abdul)
- initial setting done , HV off until beam better understood
- thermocouple 4/28 done, will need help from electrician -> Monday

HCAL (Virginia)
- nothing new

EMCal (John)
- taking data, only one crate, used to have problems, no problems today
- work on bias

TPOT (Hugo)
- thanks for John H to create elog
- missing one HV board in mainframe (lost in monitoring)
  - TPC work in same rack
  - probably just have to power cycle mainframe -> John K will power cycle
- Hugo will be at BNL starting Monday 8:00am

TPC (John K)
- investigating channels with higher noise to look for pigtail damage
- weird problem with GTM reset last night, had to reset FEEs 
- more details from Jin by email:
    • TPC in 24hr operation with debugging, updates, and stress tests
    • John K. is carrying out pulser tests on the GEM modules, on which new 
noise source was identified with pedestal data by Thomas Marshall and Adi 
Dash. https://sphenix-intra.sdcc.bnl.gov/WWW/elog/TPC/82
    • There was a GTM interruption on Friday 17:18 during TPC pedestal runs. 
The cause is unexplained from Run and DAQ Elogs. This sends TPC FEE and FELIX 
to a partially stuck state. We have to recovered today by power cycling FELIX 
and FEEs. https://sphenix-intra.sdcc.bnl.gov/WWW/elog/TPC/83
        • GTM interruptions can be tremendously disruptive to TPC. In 
multiple cases, they took several hours for recovery, as some of the logic 
could get stuck and hard to identify the stuck state. 
        • The last few cases : May-12 5:18 PM (not sure what happened), 
May-11 12:09PM (maybe GTM debug session), May-8 9:12PM (planned GTM firmware 
update)

INTT nothing

MVTX nothing

sEPD nothing

DAQ (Martin)
- doing more starts and stops (with EMCal)
- got it to a place where it was working except for one random SEB at a time 
not participating (see DAQ elog for details)
- taking data with everything:  switched all busy’s on
- John H set up random trigger, TTL 100 ns long, 14 kHz
- plug into GTM input 1

ZDC (John H)
- checking coincidences, they appear (pulser, split)




- 
---------------------------------------------------------------------------------
Stefan Bathe
Professor of Physics
Baruch College, CUNY
and RIKEN Visiting Scientist

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
----------------------------------------------------------------------------------
- 
---------------------------------------------------------------------------------
Stefan Bathe
Professor of Physics
Baruch College, CUNY
and RIKEN Visiting Scientist

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
----------------------------------------------------------------------------------