1. 2011-12 winter shutdown planning A.Tauro 28-2-2012

2. Dec JanFeb Mar Wk495051521234567891011 Mo 512 1926 291623306132027512 Tu We Th Fr Sa Su Xmas Day NY Day 2011-12 winter shutdown 28/2/12 Close L3 Open L3 Beam off: Dec 8 th at 6:00 AM Beam on: Mar 14 th at 18:00 PM

3. Dec JanFebMar Wk495051521234567891011 Mo 5 After 17:00 1926 291623306 After 17:00 20 27 5 12 Tu We Th After 17:00 DSO Fr AUG 48V (EL)Lift Sa After 17:00 Su Xmas Day NY Day 28/2/12 UX25 access restrictions Access restrictions: Removal/installation of shielding (restriction includes RB24 triplets) PX24 blocks: no access CR5 and UX25 PX24 beams (35t): no access CR1-5, Expo, and UX-25 All other blocks: no access to UX-25 (or 1-2 teams max, not on A-side) TRD insertion: no access to MNF and L3 AUG test (Arrêt Urgence General – General Emergency Stop) – no access UX25 DSO test (Department Safety Officer) – no access UX25 No access SX2 during manipulation of blocks in SX2 (except ACR and WRs) Close L3 Open L3 Legend No access (except transport) Access possible No access

4. Dec JanFebMar Wk495051521234567891011 Mo 5 After 17:00 1926 291623306 After 17:00 20 27 5 12 Tu We Th After 17:00 DSO Fr No ventilatio n AUG Ventilation 48V (EL)Lift Sa After 17:00 Su Xmas Day NY Day 28/2/12 Wks 49-50 and 7: access in normal hours (e.g. TPC) to be coordinated with TC Wks 1-2: no access inside L3 during TRD SMs insertion When moving from low-beta to insertion platform: no access to MNF When inserting the module: no access L3 and MNF Watcher needed in wks 49-50 and from wk 6 (Fri 10/2) onwards L3 and MNF access restrictions Open L3

5. EN-HE 8 th Dec (9:30): reinstall crane (PR-774) electronics 8 th Dec (AM): load test cavern cranes (20t) 30 th Jan. UX25 crane inspection by Brunnhuber Wk 8: test UJ22 jig + annual maintenance P2 cranes Wk 10 (Fri 9 AM): removal crane electronics 28/2/12 EN-HE-LM 14 th Dec: maintenance lift CR1-4 –Lift stopped whole day (7:00 – 16:00) 24 th Feb: maintenance UX25 lift  No access UX25 whole day –Lift not operational whole day

6. TE-VSC 8 th and 9 th Dec: close MNF valve and venting central beampipe Feb 2 nd – 21 st : pump down central beampipe Week 8-9: take out GIS table Week 10: open manual valve on MNF 28/2/12

7. GS-ASE Week 52: evacuation test Jan. 5 th – 13 th : RAMSES firmware upgrade Jan. 9 th : red phone maintenance Jan. 20 th and 26 th : test fire detection Week 5: sniffer maintenance Week 6: maintenance gas detection (UX, CR5) Week 7 (Feb.15 th ): sniffer SW upgrade Feb. 24 th : maintenance PAD/MAD 28/2/12

8. EN-CV-OP – Dec 7 th Dec at 18:00-22:00: adjustment chilled water flow in the cavern + lower L3-Dipole cooling settings –Will affect all cooling plants –Keep as many detectors on till the 8 th (DCS shutdown), in order to check that regulation works (EN-CV-DC side) –Keep L3 and Dipole till the end of the test Week 50: rinsing of mixed water in UX25 cavern (Philippe) –Refilling in parallel  will not affect ALICE cooling End wk 50 (16 th Dec): test of Dipole flooding alarm –Need access to Dipole (Philippe) 28/2/12

9. EN-CV-OP – Jan/Feb Tue 2 nd and Wed 3 rd Jan: Maintenance ITS (old) ventilator in CR5 Thu 5 th and Fri 6 th Jan: maintenance PMD-MTG-MTK ventilation units Fri 6 th Jan: stop chilled water (SU2) –Therefore stop mixed water (cavern, CRs) –Switch tap water into CRs Week 2: –Cleaning cooling towers (Mon to Thu) –Maintenance L3 injection and UX25 extraction/injection units. Test of alarms –New motor L3 ventilation (date tbc) –Modification of chilled water pipe for L3 jacket (Mon) –Maintenance mixed water pumps PX24 (Mon-Wed) and UW25 (Wed-Thu) –Preparation services new ITS dehumidifier –Consolidation of automatic switchover to tap water into CRs Week 3: –Restart chilled & mixed water (around Wed, tbc) –Maintenance L3 extraction unit. Test of alarms –Maintenance ventilation unit SG2 (Mon-Tue)  will cut Ar/H2 28/2/12

10. EN-CV-OP Repair leak FB pipe: –26 th Jan  done –Fernando  compensatory measures Removal unused FB pipe (I-side): –13 th Jan  done –Need nacelle 28/2/12

11. EN-EL 1/2 13/12: Test general secours: stop general services for 10’ –Will affect all general services, also at P2. The UPSes for DAQ and DCS/HLT will bridge the power cut (assuming they manage to repair the DCS/HLT one on 8.12...). Also rack power (CRs and UX) will not be affected. –However all 'wall outlets', WR of the ACR, offices, meeting room, SXL2, coffee machine will be affected... Also the non ups part of the cooling plants as well as the gas system will be affected… 17/12: Test auto-transfert: –1.5 days to configure + 1 day test –No impact on experiments Wed 18 th Jan: maintenance power transformers: –Will cut EXD1/2X for 3h  cut power to CRs (normal network) –Will cut ITS ventilator and HMPID rack in CR5 Test AUG P2: Fri Jan 20 th – No access UX25 –Major electrical perturbation affecting P2 for whole day 28/2/12

12. EN-EL 2/2 Consolidation 48V network (after incident 11 th Jan 2011) –1 day no access to UX25  Feb 17 th –Major electrical interruption whole P2 Maintenance power transformer EMT306/2X –Feb 24 th 6:00 to 10:00 –Will stop UX25 air extraction and injection (4h) – No access UX25 from 6:00 to 10:00 28/2/12

13. EN-CV-BE New ITS dehumidifier unit in SX2 –Electrical control cubicle during week 2 –Power cubicle : delivery week 4 –Cabling : week 4/5 –Start-up and commissioning : week 6 /7 (up to 21 st Feb, wk 8)  delayed to week 10 (Mon 5 th Mar) 28/2/12

14. EN-CV-DC RP sampling: Dec 8 th TRD. Periodic maintenance + replacement chilled water valve + preventive replacement pump + cleaning vacuum pump: plant stopped 2 days on Jan 5 th and 6 th SPD. Periodic maintenance + put entire plant on UPS: plant stopped 1 day on Jan 6 th TOF-PHOS-EMC-SPD. Installation PHOS circulator + replacement flowmeter + periodic maintenance: plant stopped from 9 th to 17 th Jan TPC. Periodic maintenance + preventive replacement pump + include heaters in supervision + cleaning vacuum pump: pant stopped from 18 th to 20 th Jan HMPID. Periodic maintenance + preventive replacement pump: plant stopped 2 days on Jan 23 rd and 24 th TPC RR. Periodic maintenance + install new filters: plant stopped from Jan 25 th to Feb 2 nd SDD-SSD. Periodic maintenance + replacement pump: plant stopped from 3 rd to 9 th Feb 28/2/12

15. BE-ABP-SU (survey) Week 50 (Sat-Sun): with L3 doors open: –Zero measurement (SF, TPC feet, MNF valve, MNF) –Low Beta network update –C-side photogrammetry (EMCal) Weeks 1-2: after each TRD insertion, requiring ½ day on low-beta: –MNF valve and MNF Week 4: survey MTG Week 5: at the end of TRD and EMCal, requiring three full days with both doors open: –TRD modules, CAL frame photogrammetry, MNF valve, MNF, SF deformation, TPC feet Week 6: MTK ST1-2 Week 7: no access (reserve) Week 9: survey MTK ST3-4-5 Week 10 (Tue): survey PMD 28/2/12

16. TPC Take out capacitors on all A/C ROC 28/2/12

17. TPC heat screen Check the loops for the thermal screen in week 6 (there was a leak) We will need: –access to the TRD cooling plant –access to C side and A side of TPC –access to the miniframe and PP0 Since the pipes are on the outside of the miniframe we would probably need a nacelle. 28/2/12

18. TPC sectors 11 to 15 Week 49: –Thu 8/12: displace FMD2 box. The box can be reinstalled anytime (at latest in week 5) –TPC A-14/15 (4 days anytime) Week 3: move PMD to parking position (see next slide) Week 4: –Mon 23/1 AM: disconnect and displace SPD box –Mon 23/1 PM: disconnect and displace SSD box –Tue-Fri: TPC A-11/12 (4 days) –Sat: put back and test SSD box Week 5: –Mon 30/1: put back and test SPD box –Wed-Fri: TPC A-13 (2 and 1/2 days) + reinstall FMD2 box 28/2/12

19. PMD Thu 19 th Jan: PMD moves to Parking Position Week 4 - 6: PMD Maintenance –Replacing some of the modules which are having problem –Replacing some of the FEE Chains –Need cooling for the DAQ (Crocus) so that we can check the health of the modules and FEE chains. Week 7 (after 17:00) and 8: Access to Crocus Crate for DAQ Week 10 (Mon 5 th Mar): PMD moves back to Final Position Week 10 (Tue 6 th Mar): survey 28/2/12

20. T0 Investigation of the problem with laser system (laser, attenuator, optical splitters, optical cables) –Rack 018,019, start from ~16 January –Miniframe (from Feb.7 th ) Upgrade of electronics and check of spare modules –Rack 018,019, start from ~16 January 28/2/12

21. TPC laser Annual laser maintenance, 1-2 days. Needs normal power and cooling Open mirror box below TPC sector A13 (bottom below TPC endplate) and possibly replace camera or mirror. 1-2 days. I want to do this because a weak picture from this mirror/camera makes C- side alignment difficult. Best done with L3 doors open. I believe access between the TOF and TPC should be OK. I need to be able to run the laser, so we need to mount the long laser pipe temporarily after opening of L3 doors. 28/2/12

22. TRD 3 supermodules installation, cabling, commissioning (L3 access, A & C sides etc) –Arrival at CERN of Bernd & Co on 2 nd Jan. around noon –Insertion sequence: 6-2-3 –Possible to have transport on Sun.8 th Jan? C19 power installation -> we will ask DCS C16-19 Netgear switch rearrangement I08/O08 Netgear switch rearrangement DAQ upgrade (discussion on going between Joerg and DAQ group) Pretrigger backup PSU installation and LV cable rearrangements (I/O rack and C-side in L3) BKF LV protection panel replacement (C-side in L3) Cooling valves replacement for 10 sectors, C side (if necessary, ask Ana to judge) (C-side in L3) Moving back pressure sensors from TPC TS to TRD (C-side in L3) GTU optical fiber installation (Stefan) (C16,17,18 racks) CR4 HV rearrangement for new super-modules 28/2/12

23. SPD Disconnect pipes in front of L3 door: 14/12 (after 17:00) New inox pipes in front of L3 door: from 14 to 17/12 (after 17:00) Week 6 : drill filter in PP3 (access PP4) + connect cleaning machine 28/2/12

24. EMC 15/12 PM: delivery new nose (SXL2) 12/1 (PM): delivery 2 SMs (SXL2) (not tested afterwards) Nantes team: –Monday 16/1 PM: travel to CERN –17-18-19/1: modification new nose in SXL2 + cavern preparation (insertion SM into rotator if possible) –Friday 20/1 PM: travel to Nantes –Monday 23/1 PM: travel to CERN –24-25-26/1: insertion –Friday 27/1 PM: travel to Nantes 28/2/12

25. PHOS As from Dec 8 th (PM): –Fix condensation problem on pipes and on top of detector –New redundant power supply for crystal cooling unit –Flowmeter crystal cooling unit (tbc) –2 new T sensors inside L3 –Replace RCU_0 in module_3 Connect crystal plant and LVPS to FB water during cooling stoppage: –E.g. on Jan 5 th 28/2/12

26. MTK Repair slats on ST3-ST4-ST5 (only limited to the ones accessible) –Week 50 –Week 2 to week 9 Change one quadrant in ST2 (3 Right Bottom); –Week 4 (Monday and/or Tuesday)  done Connection check in ST1 (without opening); –January: no day fixed yet… 28/2/12

27. MTG Maintenance Front-end Electronics, mostly spare installation: –19 th to 21 st Dec. Nacelle needed and green fences must be dismantled Check on RPC (MTR21-OUT) for gas tightness, eventual dismounting and eventual changing –Week 3. Nacelle needed Survey of 2 half-planes (MT12-IN and MT12-OUT) including measurements with theodolite and photogrammetry, survey of the other 6 half-planes with only theodolite measurements –Week 4. Nacelle needed SAA3 Shielding - MTR in closed position –Week 8 - can some concurrent activity in the MTR be carried out (i.e. regional electronics)? General global check ((HV, LV, FE, Decision electronics, configuration, readout,...) –Week 8. Feb 20 th (open/close some MTR half planes, nacelle needed) and replace 1 Local decision board located in racks at the gangways level. 28/2/12

28. ZDC Move detectors by 1.36m towards IP to solve the problem of collimator shadow 28/2/12

29. Other activities ONET: cleaning UX25 cavern (wk 10) 220V power sockets in MNF-BKF (INEO) (wk 10) Reinstall ADA (wk 10, tbc) SAA3 extension (wk 8)  done Pull cable DSS-SPD cooling plant Modification BBF (evacuation path)  done Install C-side ladder + trap (  LS1) Picture ALICE (A.Saba)  done –Week 5 (Thu-Sat) Replacement CR3 racks and removal air conditioning CR2-3-4 –From week 4 (tbc from Dominique: Cegelec) Installation accelerometers (wk 8) Test Dipole bus bars (2h, Pascal) with IR camera (Mon 13/2) –Need to remove plexi protection 28/2/12