Commissioning and running of sPHENIX

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

Minutes shift change 2023-05-05

general

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- scaffolding inspected, bore access available (if you do work:  be careful, put lock and remove it again, inform shift leader)

- no access Monday:  roll-up day (access control system testing)

- still working on IRR/ORE approval 

  - CAD chief engineer said electrical systems are safe we can wait until next shutdown

  - steps are Alex Tulio (Monday), Mike Lancy, site office (three days)

evening:  Xuan

- EMCal NW chiller turned off (overheating)

- INTT work

night:  Hanpu

- quiet, no alarms

- 1:00am INTT work done, LV, HV off

day:  Sookhyun

- INTT experts replacing T readout box, T now reading correctly

  - interlock work, still ongoing

- EMCal chiller replaced

- TPOT gas readings now normal

MBD (Mickey)

- HV scan last night

- set up remote scope in rack in preparation for timing in

HCal (Hanpu)

- cosmic runs during night

- weekend:  cosmic running unless Martin is working on hit

  - will ask help from shift crew

EMcal (Tim)

- took LED and single pixel noise data with bias, identified problems, will access to try to fix

TPOT (John K)

- need to sort out working vGTM —> Martin, John K, Hugo

TPC (Jin)

- Takao worked on automatically resetting FEEs, config ASIC, 626 FEEs working, everything but one FEE 

  - known felix problem

- John K and Jin diagnosed readout bottlenecks, addressing those with firmware updates

- expect 24 h operation, if gap that means pedestal data taking; if telemetry missing, shift crew don’t you worry

- observed three network outages in the last ~ 24 h

  - not clear why

INTT (Itaru)

- replaced T readout board in North side, now T working properly

- no bore access needed

- taking data since this morning with full bias:  calibration pedestal

- Raul and Martin will work on felix readout tonight

MVTX  (Zhaozhong)

- technicians ran replacement signal cable today

DAQ 

- see separate meeting

- 

---------------------------------------------------------------------------------
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
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---------------------------------------------------------------------------------
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
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