Status of LS1 collimator maintenance O. Aberle – 03/03/14 With input from P. Bestmann, S. De Man and J. Lendaro

Main activities during the LS1  Collimator exchange (TCTP vs TCT, IR 1, 2, 5 and 8)  Collimator installation (TCLP, TCL6 in IR1 and 5)  New TCAPD (IR 3)  New installation commissioning  Collimator standard maintenance  Special maintenance  TIM / Robot intervention/observations  Alignment  Outlook March 03rd 20142O. Aberle – CWC

Collimator exchange  New production of TCTP  New production of TCSP  New production of TCAPD  Preparation of 2 spare TCLP  Preparation of 1 spare TCP  Layout modification in Pt. 8, removal of 2 TCTVB, shifting TCLIA  Pt. 1: Replacement of 4 TCT + by 4TCTP + installation of 2 TCLP and 2 TCT  Pt. 2: Replacement of 2 TCT + 2 TCLP by 4 TCTP  Pt. 3: Installation of 2 new TCAPD  Pt. 5: Replacement of 4 TCT + by 4TCTP + installation of 2 TCLP and 2 TCT  Pt. 6: Replacement of 2 TCS by 2 TCSP  Pt. 7: Remove first TCP on the right side and the three TCP on the left side during ventilation door installation (to prevent damage) and exchange the skewed TCP of IR7L (water cooling)  Pt. 8: Replacement of 2 TCT + 2 TCTVB by 4 TCTP March 03rd 20143O. Aberle – CWC

New installation commissioning  Check each collimator mechanics and electronics.  Full check of controll system  Slot and infrastructure (support, cabling, cooling water)  Installation and alignment  Vacuum connection and bake-out  Collimator standard maintenance March 03rd 20144O. Aberle – CWC

Collimator standard maintenance  Check each collimator mechanics and electronics.  Cycle from out to in, to anti-collision and back to out.  Check 5 th axis for clearance  Check water cooling flow  Check temperature sensors  Check switches, LVDT’s, resolvers, motors and drivers  Map sound profile for each collimator  Check rails  Check roller screws March 03rd 20145O. Aberle – CWC

Collimator roller screw replacement ( ) March 03rd Dust and debris in the end cap and the housing Some dry screws regreased Up to date 3 rollers screws have been exchanged. -No linear bearing -2 LVDT‘s -1 motor -2 switches O. Aberle – CWC

TIM and Robot intervention March 03rd  Sound inspection of the collimators done with the TIM in S34 (23/24 April 2012).  Visual and acoustic inspections with camera can be useful in the future (TIM automatically, Telemax robot more flexible).  Vacuum disconnection testing with the Telemax robot on-going.  Use of robot for visual inspections/leak tests (He spray).  Profit from the long shutdown to verify the integration and do some hardware tests to confirm the procedures. O. Aberle – CWC

Alignment March 03rd  Survey is working in the whole machine.  During smoothing, magnets will be aligned and collimators checked (and adjusted if needed).  IR 3 and IR 7 are equipped with additional targets for remote verification with the stretched wire.  New collimators (TCTP, TCSP, TCLP, TCT (TCL6) and TCAPD) will be aligned.  The TCP’s removed during the installation of the ventilation doors + the skewed TCP in IR7L to be checked (high radiation levels, how much deviation can be tolerated?). O. Aberle – CWC

Schedule – linked to LS1 LHC planning March 03rd 2014O. Aberle – CWC9 Number of systems Network Installation 230V power supply cabling 230V poweredR2E cabling worksOther works Control System Installation Systems ready for commissioning Collimator added or replaced during LS1 Collimator not modified during LS1 Sector Cooldown LSector Cooldown R Powering Tests Seq Controls Commissioning starting date Controls Commissioning end date New collimators Installation date New collimators Commissioning/calibration starting date New Collimators Commissioning/Calibration end date Calibration starting date Calibration end date US for TCL-6OK YES6 + 2 TCL622 June30 June 310. Mrz14. Mrz 1L TCTP 14/04/2014 1R TCTP 5/03/2014 TCL-6 ? UA236 + TDIOK Planned 28/02/2014- OKNo3 (including TDI)730 June Mrz21. Mrz TCTP 12/05/2014 TDI 28/04/2014 UA272OK Planned 28/02/2014- OKNo22-11 August 524. Mrz28. MrzTCTP 12/05/2014 UJ337-OK - OkYES01811 August15 September 225. Feb07. MrzTCAPD 14/02/2014 USC for TCL-6No No. End of March End of March Cables available around 20th March. TCL-6 cables : L 15/04, R 30/05 No TCL6222 September28 July Mai16. Mai 5L TCTP 14/07/2014 5R TCTP 9/06/2014 TCL-6 ? US651-OK - System to switch ON2028 July5 May 631. Mrz02. Apr 6L TCSP 13/03/2014 6R TCSP 18/02/2014 TZ7621OKIn progressPlanned end of March In progress. Cables reconnection in TZ76: date to confirm OKNo4 (TCP)345 May11 August 922. Apr09. Mai 7R TCP 18/02/2014 7L TCP 10/03/2014 UA832OKIn progressPlanned 3/03/2014- TCTVB Cabling in progress OKNo3111 August Apr18. AprTCTP 9/06/2014 UA875 + TDIOKIn progressPlanned 3/03/2014- TCTVB Cabling. Finished: To check OKNo3 (including TDI)6-2 June 702. Apr11. AprTCTP 14/04/2014 BA71OK - YES Feb -  Frame given by LHC planning, Julie is coordinating with Vacuum, transport, powering etc…  Cabling and control system availability  Installation readiness of new collimators

Schedule – details by Jerome March 03rd 2014O. Aberle – CWC10 Number of systems Control System Installation Systems ready for commissioning Collimator added or replaced during LS1 Collimator not modified during LS1 Seq Controls Commissioning starting date Controls Commissioning end date New collimators Installation date US for TCL-6OKYES6 + 2 TCL Mrz14. Mrz 1L TCTP 14/04/2014 1R TCTP 5/03/2014 TCL-6 ? UA236 + TDIOKNo3 (including TDI)7417. Mrz21. Mrz TCTP 12/05/2014 TDI 28/04/2014 UA272OKNo Mrz28. MrzTCTP 12/05/2014 UJ337OkYES Feb07. MrzTCAPD 14/02/2014 USC for TCL-6No TCL Mai16. Mai 5L TCTP 14/07/2014 5R TCTP 9/06/2014 TCL-6 ? US651OKSystem to switch ON Mrz02. Apr 6L TCSP 13/03/2014 6R TCSP 18/02/2014 TZ7621OKNo4 (TCP) Apr09. Mai 7R TCP 18/02/2014 7L TCP 10/03/2014 UA832OKNo Apr18. AprTCTP 9/06/2014 UA875 + TDIOKNo3 (including TDI)6702. Apr11. AprTCTP 14/04/2014 BA71OKYES Feb -

Schedule – linked to LS1 LHC planning March 03rd 2014O. Aberle – CWC11  Work has just started  First ring collimators put back into operational status TCLA.7L3.B2, TCP.6L3.B1, TCSG.5L3.B1  A lot of work in parallel with surface preparation and installation activities.  J. Finelle from the vacuum team will take pictures when ever a collimator will be disconnected from the vacuum system.  All collimators will be checked for alignment errors, re- alignement has already started in several points.

Outlook March 03rd  Improve the sound and image quality for the TIM, very powerful tool for the future.  Investigate on the capabilities of the Telemax or similar robots for inspections and interventions.  Reference sound recording of all collimators?  Improve the accessibility to the screw (cap) (Phase 2!)  A regular check during long breaks and shut-downs with re-lubrication of the screw.  Check every slot for 5 th axis motion limitations.  Sven De Man is the new reference person for the LHC tunnel situation concerning collimators O. Aberle – CWC