Commissioning and running of sPHENIX

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

Minutes shift change 2023-04-18

general (Stefan)

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- Carriage power and water shutdown Friday morning 7:00am - 11:30am

- If you do any work in the IR that might trigger alarms, please notify the shift leader in advance! 

- computer usage:  don’t put large files in home dir, which is backed-up.  Talk to Martin if you need anything special.

evening:  Oliver

- nothing

night:  Charles

- not eventful

- turned off EMCal digitizer racks for EMCal work (Joel)

- TPC cooling water/pressure gauges

   - not properly connected

day:  Sean

- busy day

- EMCal racks were off for most of the day for work

- now on, Tim doing testing

- Rob and Steve looked at GUIs and made list of things that needed to be fixed

- TPOT work

- INTT testing (Itaru)

- rack alarms due to work in IR

MBD (Mickey)

- students are working on cleaning up cables near rack; after that will test noise level again

HCal (Hanpu)

- one sector tripping, don’t know yet why

EMCal (Sean)

- ongoing work

- tracking down signal cable connections

TPOT (Hugo)

- turned on LV, played with FEE, took data, plugged in temporary LV cable, no showstoppers

- noise situation has improved by itself (other detectors’ cables shielding?)

TPC (Jin)

- operating N with cooling on

- John was operating N last night

- Rob still running adjustment of cooling

- in coming days expect turn-over to shift crew

- for now LV under expert control unless alarm

INTT (Rachid earlier today)

- plan to install new q-pack for bias to get to nominal voltage

- interlock test postponed since bias was found to be not connected to interlocks yes

MVTX (Cameron)

- DAQ1 chiller (turned off for several days b/c of abnormally high temps)

  - still reading high temperatures => faulty component

  - spare chiller will come online

  - expect shift crew to monitor chiller soon

  - system test started this morning by experts

    - three problematic connections, investigating

sEPD (Hugo)

- light guides are being installed

DAQ

- see separate DAQ meeting after shift change

Magnet (Kin)

- He gas being purged

- eventual cool down takes 10 days

Gas/cooling water (Hugo)
- Rob is fixing some fittings on TPOT TPC cooling panels (leaks)

Plan of the day

- DAQ development

- subsystem testing

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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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