Commissioning and running of sPHENIX

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

Minutes shift change 2023-05-01

general

—————

- taking scaffolding wood down while waiting for paint to arrive

  - put yellow caution tape to barricade off

  - board in assembly hall, please don’t cross yellow barrier, pathway to chiller platforms exists 

  - paint should arrive tomorrow, painters are on call

  - one day to paint, Wednesday to dry, boards up on Thursday, best case scenario Thursday afternoon diving boards back

- access control:  gate still open and will remain open until May 8

- roof leak:  two leaks

    - door way at entrance from rack room to assembly hall (20 years old)

    - IR SE corner, CAS documented, submitted to site super, this morning Bob McCay took a look and will follow up

- chiller platform to AH:  to prevent splashing anyone while working:  caution tape area (see detailed message to run-l)

- liquid nitrogen will come Friday to fill dewer

- overlap day tomorrow

evening:  Genki
- not busy shift

- not many problems

- with Sean:  tried to power cycle rack for LV monitoring, didn’t help

- oHCal:  bias monitor showed some yellow marked channels, i.e. voltage was different for certain channels, contacted Hanpu

night:  David
- quiet

- 7:45 Steve Boose arrived to work on EMCal

day:  Zhaozhong
- TPOT LV power supply still off

- 8:00am pole tip door test, completed

- magnet power supply test started (without energizing magnet)

  - magnet on/off messages occurring (as expected)

- IR exhaust fan on

  - not necessarily related to ODH

- SA/RA switches

- MVTX interlock cable work

MBD (Abdul)
- working on HV GUI

- Sal is modifying FEM boards for gain matching

- waiting for Steve to modify module for laser timing

HCal (Hanpu)
- both sides (E, W) stuck

- Martin working on figuring out potential reason

- Martin would like to hold on to ownership of HCal overnight

(thanks to Martin for providing the following part of the minutes:)

Emcal

SE LV Control GUI went red, nothing seemed to help. Monday it turned

out that one of the power connectors was loose. Electrician came in

and fixed this.

Sean put in some spare cables for slow controls.

TPOT

Telemetry issues, Felix re-programmed (same code, not sure wy tis was needed). Dam server restarted, fixed.  

Waiting for gas to flow to turn on HV and so on.

TPC

Similar issue as the TPOT's FELIX with some GTM fiber losing lock. Still related to yesterday's unplanned GTM reboot.

Almost every part of the TPC is back.

INTT

LV system turned on following the instructions, work on HV GUI.

HV Interlock is work in progress.

MVTX

rewiring flow switches, still in progress

2E1 24V was tripped in the process, gave an opportunistic check that the alarm works

DAQ-2 chiller panel is in bypass.

DAQ

Finally, some actual diagnosis of what is the issue, MLP works on a solution (that will take a few hours, though).

Magnet

Opportunistic work on the power supply.

- 

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