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Subject: Commissioning and running of sPHENIX

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[Sphenix-run-l] Minutes shift change 2023-04-20

From: Stefan Bathe <stefan.bathe AT baruch.cuny.edu>
To: sphenix-run-l AT lists.bnl.gov
Subject: [Sphenix-run-l] Minutes shift change 2023-04-20
Date: Thu, 20 Apr 2023 17:23:20 -0400

Minutes shift change 2023-04-20

general (Stefan)

-----------

- Reminder: Rack power and ECW shutdown tomorrow morning

- ECW is back now after earlier failure

- Diving boards are back: inform shift leader of any work in bore

- Reminder: Shift Leader should be informed about subsystem work

evening: Cameron

- first couple hours people working on systems

- 6:30 only north half of EMCa and HCal on (cosmics)

- work done on scaffolding

- after that barricaded off and swapped to next shift

- after that quiet

- one less mouse

- alarm panel read by CAD indicated water leak in bore

- Lee: bit error, fixed

night: Charles

- uneventful

- same detectors on

- replaced barrier tag

- durachill reservoir level alarm (same as last night)

day: Sean

- mostly uneventful for most of shift

- carpenter came late in day to restore diving board

- trip of main alarm panel that electrician was working on, disabled

- came back in faulty state that tripped ECW

- turned off all racks that need ECW

- at end of shift working on getting ECW back

MBD (Mickey)

- Steve, Rob: work on interlocks, needed to tweak switches, done, Steve confirming, should be ready by tonight

HCal (Hanpu)

- still focusing on bias fluctuations in mpod, will run test during evening shift

- also cosmic test: will need help from night shift to continue

EMCal (Sean)

- the usual daily work, Tim made progress plugging in cables, waiting for access to bore

TPOT (Hugo)

- couldn’t do much b/c of blocked access to both bores

- did some work at rack level

- cooling works now (no more modification)

- interlock: TPOT interlocked by TPC (common cooling water flow)

- able to take PRDF data (Martin)

TPC (Thomas)

- cooling ready

- both N and S on for first time and T stable

- fibers connected

- checking read out chain

- taking pedestal data

INTT (Jaein)

- ROC out right now

- trying to fix

MVTX (Cameron)

- prepping replacement chiller last night

- but no techs available today to move onto platform, so probably tomorrow

- testing interlocks in 2E3, 2E3, turned off, shift crew aware

- after that will do system test by experts

sEPD (Rosi)

- all fiber optics here, North side will be installed once cable pullers available

- light tighting for N disk done, will be brought here

DAQ

- see separate DAQ meeting after shift change

Magnet (Kin)

- nothing new

Gas/cooling water

- cooling water is essentially ready for operation

- gas: waiting for IRR approval

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 2023-04-20, Stefan Bathe, 04/20/2023