LS 2 preparatory meeting A Tauro General information

LS 2 preparatory meeting A. Tauro

General information • LS 2 duration: 27 months • Access mode: general • Underground visits: possible from 16 December 2018 (no visits during Xmas closure) • IMPACT requests: possible to make one request per activity (e. g. TPC disconnection). Not possible to make generic request to cover 1 year… • RP: personal dosimeter needed (no declassification) 25/1/19 LS 2 preparatory meeting 2

LS 2 master plan 25/1/19 LS 2 preparatory meeting 3

TPC extraction timeline Install Delphi Frame Remove SPD, FWD detectors and beampipe Remove TPC and bring it to SXL 2 Done Miniframe extraction 7 Jan ‘ 19 9 Jan Remove ITS TPC to parking position 23 Jan 11 Feb LS 2 preparatory meeting 20 Feb 26 Feb 1 Mar ‘ 19 4

TPC preparation (cleanroom) Delivered to CERN end Jan-beg. Feb 25/1/19 LS 2 preparatory meeting 5

EN-EL interventions • AUG on Monday 25 March 2019 - no access on site (both surface and underground) • Diesel maintenance: 1 Apr 2019 • CERN wide 66 k. V maintenance: 28 May 2019 to 19 July 2019 – reduced consumption (i. e. no magnets) • 18 k. V, 3. 3 k. V and LV network maintenance: • • Mon 20 to Wed 22 Jan 2020: 3 days no general services - no access on site (both surface and underground) Thu 23 to Fri 24 Jan 2020: 2 days ‘’Limited access’’ details being worked out • AUG on Monday 27 January 2020 - no access on site (both surface and underground) • Auto transfer test: 11 Apr 2020 • BIW test: 5 and 6 Oct 2020 from 18: 00 to 00: 00 – no access underground 25/1/19 LS 2 preparatory meeting 6

EN-CV interventions • Big maintenance: • • • SF: from Nov 2019 to mid Jan 2020. NO impact on ALICE as both magnets will be OFF. UW: stop UX mixed water for 2 days in week 40/2019 (October). SU: various small perturbations + 1 day stop all cooling UX + 1 day stop all cooling SXL 2 in week 16/2020 (April). • Small maintenance: • • UW: from mid Aug 2020 to mid Sep 2020. Stop mixed water UX for 1 day in week 37/2020 (September). SF+SU: weeks 45 -47/2020: cleaning towers (stop SF 1 week) + 1 day stop all cooling UX. • Ventilation: • • Maintenance SXL 2 cleanroom before April 2019. Procedure to be established (CV). SG 2: w 7/2019 Gas extraction: w 8/2019 UX 25 cavern: May 2020 (tbc) MCH and MTG: Apr 2020 (tbc) L 3: Apr 2020 (tbc) ITS: Apr 2020 (tbc) • Raw water: • Test after Apr 2019. Short interruption (1 day), can be used tap water during the test. 25/1/19 LS 2 preparatory meeting 7

Gas systems status LS 2 status TPC Detailed plan exists TRD Xe recuperation early Jan-19 Run CO 2 till Oct-19, and with Xe from Nov-19 TOF Back-up with R 134 a until late 2020. Need a few weeks with system ON in late 2019 or 2020 (tbc) HMP Always under Ar backup PHO OFF till Oct-19, then need N 2 CPV OFF till Oct-19, then need gas (Ar/CO 2 80/20) Need humidifier in RUN 3 PMD Dismounting MCH OFF till May-19, then need gas (Ar/CO 2 80/20) MTR missing info 25/1/19 LS 2 preparatory meeting 8

Safety systems maintenance • • Fire detection: w 2 -3/2019 Gas detection: w 7/2019 (in parallel to SG 2 ventilation maintenance) Red emergency phones: 20/2/2019 Fire detection (racks): w 10/2019 25/1/19 LS 2 preparatory meeting 9

CERN Open Days • 14 and 15 September 2019 25/1/19 LS 2 preparatory meeting 10

Optical fibers installation Planning copper cables (EN-EA) Mar to Aug: pull cables ALICE tech. EN-EA 25/1/19 LS 2 preparatory meeting 11

Planning optical fibers (EN-EL) Feb to October: install and test all trunk cables 25/1/19 LS 2 preparatory meeting April 2020: install TPC/ITS fibers after Miniframe installation 12

Miniframe planning (rework in SX 2) Details about ITS PP 1 -PP 2 cables missing ALICE tech. EN-EL EN-EA LS 2 preparatory meeting 13

Day-by-day sequence w 4 ALICE technicians Institutes Transport Scaffolding EN-EA Other CERN groups Pakistani team 25/1/19 LS 2 preparatory meeting 14

UX 25 activities w 4 – Mon 21 Jan 2019 ST 3 Disconnect PHOS TOF DRM 1 TPC I-bars Remove Aside cables ALTEAD: remove 13 th PX 24 beam (interference with DF): nobody A-side when beam is lifted (AM) Remove ITS/SPD inox pipes Cable trays 25/1/19 Put nacelle here LS 2 preparatory meeting Install Solar crates, remove CROCUS, 15 cables, boxes (nacelle, scaffolding)

UX 25 activities w 4 – Tue 22 Jan 2019 Load test Yellow Platform (SXL 2) (PM) ALTEAD: displace cage (SX 2) Drill concrete ST 3 Disconnect PHOS TOF DRM 1 TPC I bars + blocks (AM) TPC frame (PM) TPC VHV box Remove Aside cables Drill 2 holes for MID services (SMB) Remove ITS/SPD inox pipes Cable trays 25/1/19 Access with ladders LS 2 preparatory meeting 16

UX 25 activities w 4 – Wed 23 Jan 2019 ALTEAD: transport TPC GEM chambers Drill concrete ST 3 Disconnect PHOS TOF DRM 1 Remove Aside cables Remove PX 24 ventilation duct Call CV beforehand. In case of evacuation use PM 25. Reinstall right after DF Remove ITS/SPD inox pipes Cable trays 25/1/19 LS 2 preparatory meeting 17

UX 25 activities w 4 – Thu 24 Jan 2019 No access in/out L 3 during Delphi Frame handling with crane Delivery 8 empty ST 1 boxes Cleaning SXL 2 and SX 2 (5: 00 AM) And complete rail assembly. TRD people must be around Topnet: cavern cleaning Ouvaroff: complete scaffolding Miniframe (SX 2) Remove ITS/SPD inox pipes ST 3 ST 1 Disconnect PHOS TOF A 1395 -6 Fix TPC transfer rails Disconnect quadrants 25/1/19 LS 2 preparatory meeting 18

Status as of today • Underground • Delphi Frame lowered to Low-Beta platform on Wednesday, installation in front of L 3 today • Last PX 24 beam and ventilation pipe removed • TPC A-side I-bars installed, TPC transfer rails installed in parking position • PHOS fully disconnected • TOF work completed • Surface: • Yellow platform load test 25/1/19 LS 2 preparatory meeting 19

Highlights w 4 Jan 21 Jan 22 Jan 23 25/1/19 Activities w 4: LS 2 preparatory meeting • Last PX 24 beam and ventilation pipe removed • TPC A-side I-bars • Installation Delphi frame • Preparation TPC extraction 20

Jan 23 at 17: 00 ALICE TB - A. Tauro 21

UX 25 activities w 4 – Fri 25 Jan 2019 Nacelles here! 25/1/19 Once aligned, fix frame to blocks LS 2 preparatory meeting ST 3 ST 1 Disconnect PHOS Install Delphi Frame + adjust frame TOF A 1395 -6 Reinstall fences Survey DF rails Remove A-side services Remove survey tripods 22

February schedule 24/1/19 ALICE TB - A. Tauro 23

TPC preparation (cleanroom) Delivered to CERN end Jan-beg. Feb 24/1/19 ALICE TB - A. Tauro 24

Day-by-day sequence w 5 ALICE technicians Institutes Transport Scaffolding EN-EA Other CERN groups Pakistani team 25/1/19 LS 2 preparatory meeting 25

UX 25 activities w 5 – Mon 28 Jan 2019 SDD: remove SDD crates UX 25 and CR 4 Cable trays ALTEAD + PHOS: remove 11 PHOS boxes from the cavern (10: 00) Align TPC Scaffolding DF feet+rail Fix TPC transfer rails And discuss at 9: 00 about baby-frame access 25/1/19 ST 3 ST 1 Remove A-side services Fix TPC transfer rails LS 2 preparatory meeting Install Solar crates, remove CROCUS, cables, boxes. Need nacelle INSIDE 26

UX 25 activities w 5 – Tue 29 Jan 2019 P 2 tech: pre-assemble TPC omega platforms in SX 2 (tbc) Inspect DCal frames (Jean-Se + Joseph) ALTEAD: transport 8 empty ST 1 boxes to C-O/side ST 3 V 0 C Preparation TPC extraction ST 1 Fix TPC transfer rails Cable trays Remove A-side services Need nacelle! Cable trays ALTEAD: transport 13 th PX 24 beam outside SX 2 Fix TPC transfer rails 2 ALTEAD people needed Removal V 0 C PMTs and electronics 25/1/19 LS 2 preparatory meeting 27

UX 25 activities w 5 – Wed 30 Jan 2019 Cleaning Yellow Platform (Topnet) (SXL 2) Delivery TPC manipulator (transport from Heidelberg) Cable trays Inspect DCal frames (Jean-Se + Joseph) ST 3 ST 1 Preparation TPC extraction Cut cables/fibers Remove A-side services Fix TPC transfer rails 25/1/19 LS 2 preparatory meeting 28

UX 25 activities w 5 – Thu 31 Jan 2019 Cleaning Yellow Platform (Topnet) (SXL 2) L. Simonetti at CERN (until end February) Cable trays Cleaning cavern (Topnet) ST 3 ST 1 Remove Baby Frame scaffolding Install omega platforms Remove A-side services Fix TPC transfer rails 25/1/19 LS 2 preparatory meeting 29

UX 25 activities w 5 – Fri 1 Feb 2019 Cleaning Yellow Platform (Topnet) (SXL 2) 25/1/19 Cable trays LS 2 preparatory meeting ST 3 Install ITS rails ST 1 Remove A-side services ALTEAD: transport 4 +4 chambers (inside boxes) to b. 3297 30

Day-by-day sequence w 6 ALICE technicians Institutes Transport Scaffolding EN-EA Other CERN groups Pakistani team 25/1/19 LS 2 preparatory meeting 31

UX 25 activities w 6 – Mon 4 Feb 2019 Cleaning cleanroom roof (Topnet) Cleaning ARC moquette (5: 00 AM) – no access for 24 h Can only be done after removing all ST 1 quadrants! ALTEAD: transport ITS CYL frame to UX 25 cavern MCH: test ST 1 and ST 2 quadrants with X-ray source (SX 2) – whole month Cable trays Install ITS rails Optical fibers Disconnect DCal Remove A-side services Adriano at CERN ST 3 Scaffolding cables/pipe s Cleanroom maintenance (CV) - tbc Remove optical sub-racks covers in backframe (Giuseppe+1 technician) 25/1/19 LS 2 preparatory meeting 32

UX 25 activities w 6 – Tue 5 Feb 2019 Cleaning cleanroom roof (Topnet) Adriano at CERN Remove TPC and TOF (DAQ) terminal plates (Giuseppe) 25/1/19 LS 2 preparatory meeting Cable trays MID ST 3 Beampipe support Optical fibers Disconnect DCal Remove A-side services Install beampipe support, remove valve, transfer beampipe to rails, remove beampipe support Installation XBEE. Need nacelle I-side 33

UX 25 activities w 6 – Wed 6 Feb 2019 Cavern lift maintenance: no access between 6: 00 AM and 8: 00 AM ALTEAD: open cleanroom roof, put YP inside cleanroom and assemble various extensions + cleanroom maintenance (tbc) EN-CV: fix leaks cleanroom walls (rubber) (special nacelle) (tbc) Adriano at CERN 25/1/19 LS 2 preparatory meeting Cable trays MID ST 3 ITS cables Disconnect DCal Remove A-side services Install CYL frame, put cable trays horizontal, arrange cables into CYL frame 34

UX 25 activities w 6 – Thu 7 Feb 2019 ALTEAD/TPC: put VHV power supply and gas equipment inside cleanroom ALTEAD + P 2 tech: assemble YP, extension, green crane, TPC manipulator and sector mockup EN-CV: fix leaks cleanroom walls (rubber) (special nacelle) + cleanroom maintenance (tbc) ALTEAD + P 2 tech: close cleanroom roof 25/1/19 LS 2 preparatory meeting Cable trays MID ST 3 ITS cables Disconnect DCal Remove A-side services Cleaning cavern (Topnet) 35

UX 25 activities w 6 – Fri 8 Feb 2019 Cleaning cleanroom (Topnet) 25/1/19 LS 2 preparatory meeting Cable trays ST 3 Disconnect DCal Transfer ITS to rails Remove omega platforms Remove A-side services Remove service CONES and omegas from A-side (put them in service frame), transfer ITS + service chariot on rails 36

Day-by-day sequence w 7 ALICE technicians Institutes Transport Scaffolding EN-EA Other CERN groups Pakistani team 25/1/19 LS 2 preparatory meeting 37

UX 25 activities w 7 – Mon 11 Feb 2019 MCH: test ST 1 and ST 2 quadrants with X-ray source (SX 2) – whole month Certification cleanroom Ton at CERN (2 weeks). Remove SSD crates when possible 25/1/19 LS 2 preparatory meeting Cable trays ST 3 Install omega platforms Disconnect DCal Move TPC to parking position Disconnect TPC gas Remove A-side services EN-CV: SG 2 ventilation maintenance (whole week) + gas detection maintenance 38

UX 25 activities w 7 – Tue 12 Feb 2019 Cable trays Install ITS protection ST 3 Remove A-side services Dry test TPC ROC installation in the cleanroom (whole week) Ton, Pieter 25/1/19 LS 2 preparatory meeting 39

Cable trays Disconnect ITS PP 2/3 ST 3 Remove A-side services UX 25 activities w 7 – Wed 13 Feb 2019 (Ton, Flavio, Michel) 25/1/19 LS 2 preparatory meeting 40

UX 25 activities w 7 – Thu 14 Feb 2019 25/1/19 LS 2 preparatory meeting Cable trays Disconnect ITS PP 2/3 ST 3 Remove A-side services Cleaning cavern (Topnet) 41

25/1/19 Remove FMD 2 And remove beampipe support, install LS 2 preparatory meeting bakeout shell Cable trays Move away service chariot ST 3 Remove A-side services UX 25 activities w 7 – Fri 15 Feb 2019 42