Commissioning and running of sPHENIX

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

Minutes shift change 2023-05-04

general

—————

- Begin-Run party tomorrow noon

- need to temporarily shut down power to racks in rack room at 4:00pm today:  3.2, 4.1, 4.2

- pole tip doors open again

- scaffolding and diving boards going to be installed tomorrow for access to bore:  but please keep access to a minimum!

  - don’t forget to add your lock to the lock box and remove it right away after finishing work

- working on finishing ORR inspections

  - then forward to IRR for approval Monday (1st step)

- reminder:  inform shift leader of any work in IR

- Lustre file system back

evening:  Xuan

- quiet shift

- INTT work

night:  Hanpu

- quiet, only four chiller alarms, acknowledged

- TPC:  long pedestal run

- HCal:  cosmics running

day:  Sookhyun

- alarms, Lee tried to reset, triggered water leak alarm, Lee:  likely faulty sensor, Joel:  water leak broke sensor, needs to be replaced

- MVTX work to investigate air bubbles

- INTT work on interlock systems

  - taking calibration data

- CAD maintenance in gas mixing room triggered alarms

- Tim worked on LV

MBD (Abdul)

- nothing to update

- working on software

HCal (Hanpu)

- taking cosmic runs

  - Silas:  auto-looping 

- will continue until DCM rack shut-down, then hand over to Martin, then take back for Hanpu at midnight

EMcal (Sean)

- more detector development, SiPM bias, bore access

TPOT (John K)

- John K:  permission from Hugo to update FELIX firmware to sync with TPC, will do that tonight

- waiting for access to south bore to sure up ground cable

TPC (John K)

- throughput tests with Jin, will continue tonight 

INTT (Itaru)

- Steve needs to contact company regarding interlock 

- LV and HV on, taking calibration, pedestal data until Raul will arrive

- Rachid:  leakage current in silicon detector increased by factor 2, need nitrogen

- Rob is looking into hooking it up to dry air

  - requires additional filtering of lab-provided dry air to make it good enough for silicon sensors

MVTX  (Zhaozhong)

- Cameron, Yasser working, got signal cable to connect to patch panel 3 and 2E1, wrapped with sleeve

- Aaron and Jeff will install it tomorrow

- daq2 cooling is on bypass:  will see high flow rate 10 l/minute

DAQ 

- see separate DAQ meeting

  (Martin documented firmware issues in GTM and is debugging calorimeter readout)

- 

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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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