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Subject: Commissioning and running of sPHENIX

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[Sphenix-run-l] Minutes shift change 2023-04-24

From: Stefan Bathe <stefan.bathe AT baruch.cuny.edu>
To: sphenix-run-l AT lists.bnl.gov
Subject: [Sphenix-run-l] Minutes shift change 2023-04-24
Date: Mon, 24 Apr 2023 18:30:57 -0400

Minutes shift change 2023-04-24

general

—————

- new shift crews, training after this meeting, tomorrow overlap day

- safety walk through at 1:00pm today (Kin)

- electrical expert: arc flash sign in all racks, etc

- fire expert: scaffolding wood flammable, can be painted by fire retardant paint

- tomorrow morning 7:00am test fit of plug door, no one allowed in IR for that; should be done by 8:00am

- Wednesday morning to Friday: pole tip door will be closed for test close and magnet power supply work

- will lose access to bore Tuesday evening/Wednesday morning to Friday

- use opportunity to test all detectors together: noise, heat

evening: Cameron

- pretty quiet

- had tried to get air out of MVTX lines

- when tried to turn chiller on didn’t respond anymore

- had to replace chiller memory card (SD card)

- deleted log files, put original card back, all good

- wrote up shift crew chiller page on run web page, sub-atmospheric chillers (MVTX, FVTX, TPC, TPOT)

- -> add label to control panels regarding which detector we are looking at

- disconnected for SD card work, caused water leak, alarm

night: Charles

- only EMCal North and HCal were on

- one chiller had dropped below 1.8 l/min

- instructions to call subsystem expert

- investigating

day: Sean

- relatively quiet

- put fan on damp spot, cleared up alarm condition

- Tim and John replaced LV board, also HCal

- safety walk-through, now back to work

- Lee and Joel worked on alarm system

MBD (Mickey)

- last wiring for interlock was done, will check if they work tomorrow

- will work on FEM next

- will need to wait for Chi for firmware update (clock master signal)

HCal (Hanpu)

- replaced LV board, now good

- MPOD bias module tripped while Eric was investigating

- now two bad modules, no spares

- can make detector work with two good half of two half-broken modules; but this will leave us with absolutely no spares

EMCal (Sean)

- LV board replaced

- Tim investigating dark channels

- south looking good, few issues still in north

TPOT (Hugo)

- not much to report, taking noise data, found a way to initialize board that fixes earlier problem, which is good news

- John K: LV cables for fixing grounding ready soon, will install one today

- leave TPOT LV on-> in hands of shift crew

- will update standing orders

TPC (Jin)

- Rob signed off on cooling interlock, TPC always on, in hand of shift crew, any cooling issues contact Rob Pisani

- 96 % fo FEEs, 98 % of servers working

- trying to move to full system RC DAQ readout

- unplugged spark cable: will try after this meeting (update: was not possible to plug in)

INTT (Rachid)

- Damon finished bias interlock cables in north, moving to south

- installing FELIX board, need Martin’s help

MVTX (Zhaozhong)

- low flow rate

- took look today, gradually decreasing, investigating, no obvious air bubble

- daq01 cooling panel was in bypass (Cameron did this to start up chiller)

- swapped some cables

sEPD (Rosi)

- fiber optics are in

- only strong back with disk is missing (wait until run has started)

- bicycle rack confirmed fit

DAQ (Martin)

- had intense weekend

- next on agenda: calorimeter read-out

- Martin partially out for training tomorrow - Thursday

Magnet (Kin)

- nothing new

Plan of the day

- DAQ development

- subsystem testing

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

[Sphenix-run-l] Minutes shift change 2023-04-24, Stefan Bathe, 04/24/2023